Datasets:

dtcxzyw

/

llvm-apr-benchmark

like 1

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "4f7f71b7bccdc38f37b82981e8fa9ceb536a7016", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": [ [ 168, 174 ] ], "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": [ "UnrollState::unrollWidenInductionByUF" ], "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/interleave-with-i65-induction.ll", "commands": [ "opt -p loop-vectorize -force-vector-width=4 -force-vector-interleave=2 -S %s" ], "tests": [ { "test_name": "i65_induction_with_negative_step", "test_body": "define void @i65_induction_with_negative_step(ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %iv.i65 = phi i65 [ 0, %entry ], [ %iv.i65.next, %loop ]\n %for = phi i64 [ 0, %entry ], [ %trunc, %loop ]\n %trunc = trunc i65 %iv.i65 to i64\n %gep = getelementptr inbounds i64, ptr %dst, i64 %trunc\n store i64 %for, ptr %gep, align 8\n %iv.next = add i64 %iv, 1\n %icmp = icmp eq i64 %iv.next, 1000\n %iv.i65.next = add i65 %iv.i65, -1\n br i1 %icmp, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Assertion `getActiveBits() <= 64 && \"Too many bits for uint64_t\"' failed.", "body": "To reproduce run the test below with -passes=loop-vectorize\n```\n; ModuleID = './reduced.ll'\nsource_filename = \"./reduced.ll\"\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32-ni:1-p2:32:8:8:32-ni:2\"\ntarget triple = \"aarch64-none-linux-gnu\"\n\ndefine double @wombat() gc \"statepoint-example\" {\nbb:\n br label %bb2\n\nbb1: ; preds = %bb2\n ret double 0.000000e+00\n\nbb2: ; preds = %bb2, %bb\n %phi = phi i64 [ 0, %bb ], [ %add, %bb2 ]\n %phi3 = phi i65 [ 0, %bb ], [ %add5, %bb2 ]\n %phi4 = phi i64 [ 0, %bb ], [ %trunc, %bb2 ]\n %trunc = trunc i65 %phi3 to i64\n store i64 0, ptr addrspace(1) null, align 8\n %add = add i64 %phi, 1\n %icmp = icmp ugt i64 %add, 0\n %add5 = add i65 %phi3, -1\n br i1 %icmp, label %bb2, label %bb1\n}\n```\nReproducer: https://godbolt.org/z/cjEcv8b4Y\n\nStack dump:\n```\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=loop-vectorize <source>\n1.\tRunning pass \"function(loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>)\" on module \"<source>\"\n2.\tRunning pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"wombat\"\n #0 0x00000000051b3748 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x51b3748)\n #1 0x00000000051b113c SignalHandler(int) Signals.cpp:0:0\n #2 0x000071a06ec42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\n #3 0x000071a06ec969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\n #4 0x000071a06ec42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\n #5 0x000071a06ec287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\n #6 0x000071a06ec2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\n #7 0x000071a06ec39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\n #8 0x0000000000b2d8a9 (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xb2d8a9)\n #9 0x0000000004308ae6 (anonymous namespace)::UnrollState::unrollBlock(llvm::VPBlockBase*) VPlanUnroll.cpp:0:0\n#10 0x000000000430788c (anonymous namespace)::UnrollState::unrollBlock(llvm::VPBlockBase*) VPlanUnroll.cpp:0:0\n#11 0x0000000004309060 llvm::VPlanTransforms::unrollByUF(llvm::VPlan&, unsigned int, llvm::LLVMContext&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4309060)\n#12 0x0000000004176b76 llvm::LoopVectorizationPlanner::executePlan(llvm::ElementCount, unsigned int, llvm::VPlan&, llvm::InnerLoopVectorizer&, llvm::DominatorTree*, bool, llvm::DenseMap<llvm::SCEV const*, llvm::Value*, llvm::DenseMapInfo<llvm::SCEV const*, void>, llvm::detail::DenseMapPair<llvm::SCEV const*, llvm::Value*>> const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4176b76)\n#13 0x000000000418cb6f llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x418cb6f)\n#14 0x000000000418ebd9 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x418ebd9)\n#15 0x000000000418f213 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x418f213)\n#16 0x0000000002fcba8e llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2fcba8e)\n#17 0x0000000004fb2700 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4fb2700)\n#18 0x0000000000e33a9e llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe33a9e)\n#19 0x0000000004fb101b llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4fb101b)\n#20 0x0000000000e3312e llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe3312e)\n#21 0x0000000004fb0a20 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4fb0a20)\n#22 0x0000000000910a1a llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x910a1a)\n#23 0x0000000000903099 optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x903099)\n#24 0x000071a06ec29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\n#25 0x000071a06ec29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\n#26 0x00000000008fa97e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8fa97e)\nProgram terminated with signal: SIGSEGV\nCompiler returned: 139\n```\n", "author": "TatyanaDoubts", "labels": [ "vectorizers", "crash" ], "comments": [ { "author": "huang-me", "body": "Hi @TatyanaDoubts, \nHow did you get the IR snippet? \nThe IR you provided is weird. I'll have to check where i65 constant 0 in `%phi3 = phi i65 [ 0, %bb ], [ %add5, %bb2 ]` come from since it seems it's the origin of the problem." }, { "author": "fhahn", "body": "I suspect this was found via a fuzzer, thanks for sharing the test case!" }, { "author": "TatyanaDoubts", "body": "Hi @huang-me, @fhahn, yes this crash was found by the fuzzer generated test. " } ] }

[ "llvm/test/Transforms/VectorCombine" ]

{ "fix_commit": "958e37cd1feabf29fb1cc3fb5ac82051ad8d43eb", "components": [ "VectorCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": [ [ 952, 957 ] ], "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": [ "VectorCombine::scalarizeBinopOrCmp" ], "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/VectorCombine/X86/pr115575.ll", "commands": [ "opt < %s -passes=vector-combine -S -mtriple=x86_64--" ], "tests": [ { "test_name": "PR115575", "test_body": "define <2 x i8> @PR115575(i8 %x) {\n %ins = insertelement <2 x i8> poison, i8 %x, i32 3\n %bo = sdiv <2 x i8> %ins, <i8 5, i8 2>\n ret <2 x i8> %bo\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[VectorCombine] UB triggered after optimization", "body": "https://github.com/llvm/llvm-project/blob/c93e001ca695e905cb965b36d63f7a348d1dd809/llvm/lib/Transforms/Vectorize/VectorCombine.cpp#L1013-L1031\r\n\r\nAlive2 report: https://alive2.llvm.org/ce/z/78CM4x\r\n\r\n```llvm\r\n----------------------------------------\r\ndefine <2 x i8> @sdiv_constant_op1_not_undef_lane.2(i8 %x) {\r\n#0:\r\n %ins = insertelement <2 x i8> poison, i8 %x, i32 3\r\n %bo = sdiv <2 x i8> %ins, { 5, 2 }\r\n ret <2 x i8> %bo\r\n}\r\n=>\r\ndefine <2 x i8> @sdiv_constant_op1_not_undef_lane.2(i8 %x) {\r\n#0:\r\n %bo.scalar = sdiv i8 %x, poison\r\n %bo = insertelement <2 x i8> poison, i8 %bo.scalar, i64 3\r\n ret <2 x i8> %bo\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Source is more defined than target\r\n\r\nExample:\r\ni8 %x = poison\r\n\r\nSource:\r\n<2 x i8> %ins = < poison, poison >\r\n<2 x i8> %bo = < poison, poison >\r\n\r\nTarget:\r\ni8 %bo.scalar = UB triggered!\r\n\r\n\r\n\r\n----------------------------------------\r\ndefine <2 x i64> @urem_constant_op1_not_undef_lane.2(i64 %x) {\r\n#0:\r\n %ins = insertelement <2 x i64> poison, i64 %x, i32 4294967295\r\n %bo = urem <2 x i64> %ins, { 5, 2 }\r\n ret <2 x i64> %bo\r\n}\r\n=>\r\ndefine <2 x i64> @urem_constant_op1_not_undef_lane.2(i64 %x) {\r\n#0:\r\n %bo.scalar = urem i64 %x, poison\r\n %bo = insertelement <2 x i64> poison, i64 %bo.scalar, i64 4294967295\r\n ret <2 x i64> %bo\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Source is more defined than target\r\n\r\nExample:\r\ni64 %x = poison\r\n\r\nSource:\r\n<2 x i64> %ins = < poison, poison >\r\n<2 x i64> %bo = < poison, poison >\r\n\r\nTarget:\r\ni64 %bo.scalar = UB triggered!\r\n\r\n\r\nSummary:\r\n 0 correct transformations\r\n 2 incorrect transformations\r\n 0 failed-to-prove transformations\r\n 0 Alive2 errors\r\n```", "author": "bongjunj", "labels": [ "miscompilation", "vectorizers" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "77bec78878762e34150fe23734fa43df796c873c", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 13398, 13404 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::getLastInstructionInBundle" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/buildvector-schedule-for-subvector.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu -slp-threshold=-99999 < %s" ], "tests": [ { "test_name": "test", "test_body": "define void @test() {\nbb:\n %icmp = icmp samesign ult i32 0, 0\n %select = select i1 %icmp, i32 0, i32 0\n %zext = zext i32 %select to i64\n %getelementptr = getelementptr ptr addrspace(1), ptr addrspace(1) null, i64 %zext\n store ptr addrspace(1) null, ptr addrspace(1) %getelementptr, align 8\n %icmp1 = icmp eq i32 0, 0\n %icmp2 = icmp eq i32 0, 0\n %icmp3 = icmp samesign ult i32 0, 0\n %icmp4 = icmp eq i32 0, 0\n %add = add i32 1, 0\n %icmp5 = icmp samesign ult i32 %add, 0\n store volatile i32 0, ptr addrspace(1) null, align 4\n %call = call i32 null(<2 x double> zeroinitializer)\n %icmp6 = icmp eq i32 %call, 0\n %icmp7 = icmp samesign ult i32 0, 0\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLPVectorizer] Instruction does not dominate all uses! LLVM ERROR: Broken module found, compilation aborted!", "body": "To reproduce run opt with the test below with -passes=slp-vectorizer -slp-threshold=-99999\r\n```; ModuleID = './reduced.ll'\r\nsource_filename = \"./reduced.ll\"\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine void @wombat() #0 gc \"statepoint-example\" {\r\nbb:\r\n %icmp = icmp samesign ult i32 0, 0\r\n %select = select i1 %icmp, i32 0, i32 0\r\n %zext = zext i32 %select to i64\r\n %getelementptr = getelementptr ptr addrspace(1), ptr addrspace(1) null, i64 %zext\r\n store ptr addrspace(1) null, ptr addrspace(1) %getelementptr, align 8\r\n %icmp1 = icmp eq i32 0, 0\r\n %icmp2 = icmp eq i32 0, 0\r\n %icmp3 = icmp samesign ult i32 0, 0\r\n %icmp4 = icmp eq i32 0, 0\r\n %add = add i32 1, 0\r\n %icmp5 = icmp samesign ult i32 %add, 0\r\n store volatile i32 0, ptr addrspace(1) null, align 4\r\n %call = call i32 @llvm.x86.sse2.cvttsd2si(<2 x double> zeroinitializer)\r\n %icmp6 = icmp eq i32 %call, 0\r\n %icmp7 = icmp samesign ult i32 0, 0\r\n ret void\r\n}\r\n\r\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(none)\r\ndeclare i32 @llvm.x86.sse2.cvttsd2si(<2 x double>) #1\r\n\r\nattributes #0 = { \"target-features\"=\"+prfchw,-cldemote,+avx,+aes,+sahf,+pclmul,-xop,+crc32,+xsaves,-avx512fp16,-usermsr,-sm4,-egpr,+sse4.1,-avx512ifma,+xsave,+sse4.2,-tsxldtrk,-sm3,-ptwrite,-widekl,+invpcid,+64bit,+xsavec,-avx10.1-512,-avx512vpopcntdq,+cmov,-avx512vp2intersect,+avx512cd,+movbe,-avxvnniint8,-ccmp,-amx-int8,-kl,-avx10.1-256,+evex512,-avxvnni,+rtm,+adx,+avx2,-hreset,-movdiri,-serialize,-sha512,-vpclmulqdq,+avx512vl,-uintr,-cf,+clflushopt,-raoint,-cmpccxadd,+bmi,-amx-tile,+sse,-avx10.2-256,-gfni,-avxvnniint16,-amx-fp16,-zu,-ndd,+xsaveopt,+rdrnd,+avx512f,-amx-bf16,-avx512bf16,-avx512vnni,-push2pop2,+cx8,+avx512bw,+sse3,+pku,-nf,+fsgsbase,-clzero,-mwaitx,-lwp,+lzcnt,-sha,-movdir64b,-ppx,-wbnoinvd,-enqcmd,-avx10.2-512,-avxneconvert,-tbm,-pconfig,-amx-complex,+ssse3,+cx16,+bmi2,+fma,+popcnt,-avxifma,+f16c,-avx512bitalg,-rdpru,+clwb,+mmx,+sse2,+rdseed,-avx512vbmi2,-prefetchi,-rdpid,-fma4,-avx512vbmi,-shstk,-vaes,-waitpkg,-sgx,+fxsr,+avx512dq,-sse4a,-avx512f\" }\r\nattributes #1 = { nocallback nofree nosync nounwind willreturn memory(none) \"target-features\"=\"+prfchw,-cldemote,+avx,+aes,+sahf,+pclmul,-xop,+crc32,+xsaves,-avx512fp16,-usermsr,-sm4,-egpr,+sse4.1,-avx512ifma,+xsave,+sse4.2,-tsxldtrk,-sm3,-ptwrite,-widekl,+invpcid,+64bit,+xsavec,-avx10.1-512,-avx512vpopcntdq,+cmov,-avx512vp2intersect,+avx512cd,+movbe,-avxvnniint8,-ccmp,-amx-int8,-kl,-avx10.1-256,+evex512,-avxvnni,+rtm,+adx,+avx2,-hreset,-movdiri,-serialize,-sha512,-vpclmulqdq,+avx512vl,-uintr,-cf,+clflushopt,-raoint,-cmpccxadd,+bmi,-amx-tile,+sse,-avx10.2-256,-gfni,-avxvnniint16,-amx-fp16,-zu,-ndd,+xsaveopt,+rdrnd,+avx512f,-amx-bf16,-avx512bf16,-avx512vnni,-push2pop2,+cx8,+avx512bw,+sse3,+pku,-nf,+fsgsbase,-clzero,-mwaitx,-lwp,+lzcnt,-sha,-movdir64b,-ppx,-wbnoinvd,-enqcmd,-avx10.2-512,-avxneconvert,-tbm,-pconfig,-amx-complex,+ssse3,+cx16,+bmi2,+fma,+popcnt,-avxifma,+f16c,-avx512bitalg,-rdpru,+clwb,+mmx,+sse2,+rdseed,-avx512vbmi2,-prefetchi,-rdpid,-fma4,-avx512vbmi,-shstk,-vaes,-waitpkg,-sgx,+fxsr,+avx512dq,-sse4a,-avx512f\" }\r\n```\r\nReproducer: https://godbolt.org/z/nTE84xq7n\r\n\r\nStack dump\r\n```\r\nInstruction does not dominate all uses!\r\n %5 = icmp eq <4 x i32> %4, zeroinitializer\r\n %2 = call <8 x i1> @llvm.vector.insert.v8i1.v4i1(<8 x i1> poison, <4 x i1> %5, i64 0)\r\nLLVM ERROR: Broken module found, compilation aborted!\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=slp-vectorizer -slp-threshold=-99999 <source>\r\n1.\tRunning pass \"verify\" on module \"<source>\"\r\n #0 0x00000000050e7a98 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x50e7a98)\r\n #1 0x00000000050e548c SignalHandler(int) Signals.cpp:0:0\r\n #2 0x000078c8a0042520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x000078c8a00969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x000078c8a0042476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x000078c8a00287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x00000000007d7d7b llvm::json::operator==(llvm::json::Value const&, llvm::json::Value const&) (.cold) JSON.cpp:0:0\r\n #7 0x00000000050265b8 (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x50265b8)\r\n #8 0x0000000004f24790 llvm::VerifierPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4f24790)\r\n #9 0x00000000009015ce llvm::detail::PassModel<llvm::Module, llvm::VerifierPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x9015ce)\r\n#10 0x0000000004ee5440 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4ee5440)\r\n#11 0x000000000090c1ea llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x90c1ea)\r\n#12 0x00000000008ff258 optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8ff258)\r\n#13 0x000078c8a0029d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#14 0x000078c8a0029e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#15 0x00000000008f6d2e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8f6d2e)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139\r\n```", "author": "TatyanaDoubts", "labels": [ "llvm:SLPVectorizer", "crash-on-valid" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "899336735aeb2b41a48b6ac2c895da5e0f22dbf0", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 19490, 19498 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "tryToReduce" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/reudction-or-non-poisoned.ll", "commands": [ "opt -S --passes=slp-vectorizer < %s" ], "tests": [ { "test_name": "test", "test_body": "define i1 @test(i32 %x, i32 %a, i32 %b, i32 %c, i32 %d) {\n %cmp = icmp sgt i32 %x, 1\n %cmp2 = icmp sgt i32 %b, 1\n %cmp3 = icmp sgt i32 %c, 1\n %cmp4 = icmp sgt i32 %d, 1\n %sel2 = select i1 %cmp4, i1 true, i1 %cmp2\n %sel3 = select i1 %sel2, i1 true, i1 %cmp3\n %sel4 = select i1 %cmp, i1 true, i1 %cmp4\n %ret = or i1 %sel3, %sel4\n ret i1 %ret\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLPVectorizer] wrong vectorization to `reduce_or` due to poisonous value", "body": "Alive2 report: https://alive2.llvm.org/ce/z/f8PDZj\r\n\r\n```llvm\r\n----------------------------------------\r\ndefine i1 @test1.2(i32 %x, i32 %a, i32 %b, i32 %c, i32 %d) {\r\n#0:\r\n %cmp = icmp sgt i32 %x, 1\r\n %cmp2 = icmp sgt i32 %b, 1\r\n %cmp3 = icmp sgt i32 %c, 1\r\n %cmp4 = icmp sgt i32 %d, 1\r\n %sel2 = select i1 %cmp4, i1 1, i1 %cmp2\r\n %sel3 = select i1 %sel2, i1 1, i1 %cmp3\r\n %sel4 = select i1 %cmp, i1 1, i1 %cmp4\r\n %ret = or i1 %sel3, %sel4\r\n ret i1 %ret\r\n}\r\n=>\r\ndefine i1 @test1.2(i32 %x, i32 %a, i32 %b, i32 %c, i32 %d) {\r\n#0:\r\n %#1 = insertelement <4 x i32> poison, i32 %d, i32 0\r\n %#2 = insertelement <4 x i32> %#1, i32 %b, i32 1\r\n %#3 = insertelement <4 x i32> %#2, i32 %c, i32 2\r\n %#4 = insertelement <4 x i32> %#3, i32 %x, i32 3\r\n %#5 = icmp sgt <4 x i32> %#4, { 1, 1, 1, 1 }\r\n %#6 = reduce_or <4 x i1> %#5\r\n ret i1 %#6\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Target is more poisonous than source\r\n\r\nExample:\r\ni32 %x = #x00000000 (0)\r\ni32 %a = poison\r\ni32 %b = #x00000002 (2)\r\ni32 %c = poison\r\ni32 %d = #x00000000 (0)\r\n\r\nSource:\r\ni1 %cmp = #x0 (0)\r\ni1 %cmp2 = #x1 (1)\r\ni1 %cmp3 = poison\r\ni1 %cmp4 = #x0 (0)\r\ni1 %sel2 = #x1 (1)\r\ni1 %sel3 = #x1 (1)\r\ni1 %sel4 = #x0 (0)\r\ni1 %ret = #x1 (1)\r\n\r\nTarget:\r\n<4 x i32> %#1 = < #x00000000 (0), poison, poison, poison >\r\n<4 x i32> %#2 = < #x00000000 (0), #x00000002 (2), poison, poison >\r\n<4 x i32> %#3 = < #x00000000 (0), #x00000002 (2), poison, poison >\r\n<4 x i32> %#4 = < #x00000000 (0), #x00000002 (2), poison, #x00000000 (0) >\r\n<4 x i1> %#5 = < #x0 (0), #x1 (1), poison, #x0 (0) >\r\ni1 %#6 = poison\r\nSource value: #x1 (1)\r\nTarget value: poison\r\n\r\nSummary:\r\n 0 correct transformations\r\n 1 incorrect transformations\r\n 0 failed-to-prove transformations\r\n 0 Alive2 errors\r\n```", "author": "bongjunj", "labels": [ "miscompilation", "llvm:SLPVectorizer" ], "comments": [] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "50a02e7c68f964c5d8338369746c849ed8d3bef4", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": [ [ 965, 972 ] ], "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": [ "VPWidenCallRecipe::computeCost" ], "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/AArch64/call-costs.ll", "commands": [ "opt -p loop-vectorize -S %s" ], "tests": [ { "test_name": "fshl_operand_first_order_recurrence", "test_body": "target triple = \"arm64-apple-macosx11.0.0\"\n\ndefine void @fshl_operand_first_order_recurrence(ptr %dst, ptr noalias %src) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %recur = phi i64 [ 0, %entry ], [ %l, %loop ]\n %gep.src = getelementptr inbounds i64, ptr %src, i64 %iv\n %l = load i64, ptr %gep.src, align 8\n %or = tail call i64 @llvm.fshl.i64(i64 1, i64 %recur, i64 1)\n %gep.dst = getelementptr inbounds i64, ptr %dst, i64 %iv\n store i64 %or, ptr %gep.dst, align 8\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv, 100\n br i1 %exitcond.not, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i64 @llvm.fshl.i64(i64, i64, i64) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "powi_call", "test_body": "target triple = \"arm64-apple-macosx11.0.0\"\n\ndefine void @powi_call(ptr %P) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %gep = getelementptr inbounds double, ptr %P, i64 %iv\n %l = load double, ptr %gep, align 8\n %powi = tail call double @llvm.powi.f64.i32(double %l, i32 3)\n store double %powi, ptr %gep, align 8\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv, 1\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare double @llvm.powi.f64.i32(double, i32) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[VPlan] clang crash", "body": "Failure since https://github.com/llvm/llvm-project/pull/106047\r\n\r\n[repro.zip](https://github.com/user-attachments/files/16840758/repro.zip)\r\n\r\n```\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0.\tProgram arguments: /scratch3/packages/llvm/main-20240902/bin/clang-20 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -disable-free -clear-ast-before-backend -main-file-name PairCorrEstimator.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -menable-no-infs -menable-no-nans -fapprox-func -funsafe-math-optimizations -fno-signed-zeros -mreassociate -freciprocal-math -ffp-contract=fast -fno-rounding-math -ffast-math -ffinite-math-only -complex-range=basic -mconstructor-aliases -funwind-tables=2 -target-cpu skylake-avx512 -target-feature +prfchw -target-feature -cldemote -target-feature +avx -target-feature +aes -target-feature +sahf -target-feature +pclmul -target-feature -xop -target-feature +crc32 -target-feature +xsaves -target-feature -avx512fp16 -target-feature -usermsr -target-feature -sm4 -target-feature -egpr -target-feature +sse4.1 -target-feature -avx512ifma -target-feature +xsave -target-feature +sse4.2 -target-feature -tsxldtrk -target-feature -sm3 -target-feature -ptwrite -target-feature -widekl -target-feature +invpcid -target-feature +64bit -target-feature +xsavec -target-feature -avx10.1-512 -target-feature -avx512vpopcntdq -target-feature +cmov -target-feature -avx512vp2intersect -target-feature +avx512cd -target-feature +movbe -target-feature -avxvnniint8 -target-feature -ccmp -target-feature -amx-int8 -target-feature -kl -target-feature -avx10.1-256 -target-feature +evex512 -target-feature -avxvnni -target-feature +rtm -target-feature +adx -target-feature +avx2 -target-feature -hreset -target-feature -movdiri -target-feature -serialize -target-feature -sha512 -target-feature -vpclmulqdq -target-feature +avx512vl -target-feature -uintr -target-feature -cf -target-feature +clflushopt -target-feature -raoint -target-feature -cmpccxadd -target-feature +bmi -target-feature -amx-tile -target-feature +sse -target-feature -avx10.2-256 -target-feature -gfni -target-feature -avxvnniint16 -target-feature -amx-fp16 -target-feature -zu -target-feature -ndd -target-feature +xsaveopt -target-feature +rdrnd -target-feature +avx512f -target-feature -amx-bf16 -target-feature -avx512bf16 -target-feature -avx512vnni -target-feature -push2pop2 -target-feature +cx8 -target-feature +avx512bw -target-feature +sse3 -target-feature +pku -target-feature -nf -target-feature +fsgsbase -target-feature -clzero -target-feature -mwaitx -target-feature -lwp -target-feature +lzcnt -target-feature -sha -target-feature -movdir64b -target-feature -ppx -target-feature -wbnoinvd -target-feature -enqcmd -target-feature -avx10.2-512 -target-feature -avxneconvert -target-feature -tbm -target-feature -pconfig -target-feature -amx-complex -target-feature +ssse3 -target-feature +cx16 -target-feature +bmi2 -target-feature +fma -target-feature +popcnt -target-feature -avxifma -target-feature +f16c -target-feature -avx512bitalg -target-feature -rdpru -target-feature +clwb -target-feature +mmx -target-feature +sse2 -target-feature +rdseed -target-feature -avx512vbmi2 -target-feature -prefetchi -target-feature -rdpid -target-feature -fma4 -target-feature -avx512vbmi -target-feature -shstk -target-feature -vaes -target-feature -waitpkg -target-feature -sgx -target-feature +fxsr -target-feature +avx512dq -target-feature -sse4a -debugger-tuning=gdb -fdebug-compilation-dir=/scratch3/opt/qmcpack/build_clangPatched_real/src/QMCHamiltonians -fcoverage-compilation-dir=/scratch3/opt/qmcpack/build_clangPatched_real/src/QMCHamiltonians -sys-header-deps -D ADD_ -D H5_USE_110_API -D HAVE_CONFIG_H -D HAVE_EINSPLINE -D HAVE_LIBBOOST -D HAVE_LIBFFTW -D HAVE_MKL -D HAVE_MKL_VML -D MPICH_SKIP_MPICXX -D OMPI_SKIP_MPICXX -D OPENMP_NO_COMPLEX -D _MPICC_H -D restrict=__restrict__ -D NDEBUG -O3 -Wvla -Wall -Wno-unused-variable -Wno-overloaded-virtual -Wno-unused-private-field -Wno-unused-local-typedef -Wsuggest-override -Wno-unknown-pragmas -Wmisleading-indentation -std=c++17 -fdeprecated-macro -ferror-limit 19 -fopenmp -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcxx-exceptions -fexceptions -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -x c++ PairCorrEstimator-40412c.cpp\r\n1.\t<eof> parser at end of file\r\n2.\tOptimizer\r\n3.\tRunning pass \"function<eager-inv>(float2int,lower-constant-intrinsics,chr,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-unroll<O3>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"PairCorrEstimator-40412c.cpp\"\r\n4.\tRunning pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"_ZN11qmcplusplus17PairCorrEstimator15set_norm_factorEv\"\r\n #0 0x00005590c1746c00 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x2cb6c00)\r\n #1 0x00005590c174400f llvm::sys::RunSignalHandlers() (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x2cb400f)\r\n #2 0x00005590c1744165 SignalHandler(int) Signals.cpp:0:0\r\n #3 0x00007fb046e53520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #4 0x00005590bfa8725a llvm::BasicTTIImplBase<llvm::X86TTIImpl>::getIntrinsicInstrCost(llvm::IntrinsicCostAttributes const&, llvm::TargetTransformInfo::TargetCostKind) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0xff725a)\r\n #5 0x00005590c07fac92 llvm::TargetTransformInfo::getIntrinsicInstrCost(llvm::IntrinsicCostAttributes const&, llvm::TargetTransformInfo::TargetCostKind) const (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x1d6ac92)\r\n #6 0x00005590c31a87b9 llvm::VPWidenCallRecipe::computeCost(llvm::ElementCount, llvm::VPCostContext&) const (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x47187b9)\r\n #7 0x00005590c31ab682 llvm::VPRecipeBase::cost(llvm::ElementCount, llvm::VPCostContext&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x471b682)\r\n #8 0x00005590c31744af llvm::VPBasicBlock::cost(llvm::ElementCount, llvm::VPCostContext&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x46e44af)\r\n #9 0x00005590c317b4b5 llvm::VPRegionBlock::cost(llvm::ElementCount, llvm::VPCostContext&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x46eb4b5)\r\n#10 0x00005590c305cfb4 llvm::LoopVectorizationPlanner::cost(llvm::VPlan&, llvm::ElementCount) const (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x45ccfb4)\r\n#11 0x00005590c3064878 llvm::LoopVectorizationPlanner::computeBestVF() (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x45d4878)\r\n#12 0x00005590c307c6fb llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x45ec6fb)\r\n#13 0x00005590c307f711 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x45ef711)\r\n#14 0x00005590c307fd87 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x45efd87)\r\n#15 0x00005590c2bdf2e6 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x414f2e6)\r\n#16 0x00005590c10e652f llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x265652f)\r\n#17 0x00005590bfaa9996 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x1019996)\r\n#18 0x00005590c10e52ab llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x26552ab)\r\n#19 0x00005590bfaaa356 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x101a356)\r\n#20 0x00005590c10e32ed llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x26532ed)\r\n#21 0x00005590c19d36b6 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#22 0x00005590c19d70e9 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x2f470e9)\r\n#23 0x00005590c206a4b5 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x35da4b5)\r\n#24 0x00005590c3cfd42c clang::ParseAST(clang::Sema&, bool, bool) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x526d42c)\r\n#25 0x00005590c2318d19 clang::FrontendAction::Execute() (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x3888d19)\r\n#26 0x00005590c22972b5 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x38072b5)\r\n#27 0x00005590c23ef9d3 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0x395f9d3)\r\n#28 0x00005590bfa2dc87 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0xf9dc87)\r\n#29 0x00005590bfa269ea ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#30 0x00005590bfa29be3 clang_main(int, char**, llvm::ToolContext const&) (/scratch3/packages/llvm/main-20240902/bin/clang-20+0xf99be3)\r\n#31 0x00005590bf955c4b main (/scratch3/packages/llvm/main-20240902/bin/clang-20+0xec5c4b)\r\n#32 0x00007fb046e3ad90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16\r\n#33 0x00007fb046e3ae40 call_init ./csu/../csu/libc-start.c:128:20\r\n#34 0x00007fb046e3ae40 __libc_start_main ./csu/../csu/libc-start.c:379:5\r\n#35 0x00005590bfa26115 _start (/scratch3/packages/llvm/main-20240902/bin/clang-20+0xf96115)\r\nPairCorrEstimator-40412c.sh: line 4: 840679 Segmentation fault (core dumped) \"/scratch3/packages/llvm/main-20240902/bin/clang-20\" \"-cc1\" \"-triple\" \"x86_64-unknown-linux-gnu\" \"-emit-obj\" \"-disable-free\" \"-clear-ast-before-backend\" \"-main-file-name\" \"PairCorrEstimator.cpp\" \"-mrelocation-model\" \"pic\" \"-pic-level\" \"2\" \"-pic-is-pie\" \"-mframe-pointer=none\" \"-menable-no-infs\" \"-menable-no-nans\" \"-fapprox-func\" \"-funsafe-math-optimizations\" \"-fno-signed-zeros\" \"-mreassociate\" \"-freciprocal-math\" \"-ffp-contract=fast\" \"-fno-rounding-math\" \"-ffast-math\" \"-ffinite-math-only\" \"-complex-range=basic\" \"-mconstructor-aliases\" \"-funwind-tables=2\" \"-target-cpu\" \"skylake-avx512\" \"-target-feature\" \"+prfchw\" \"-target-feature\" \"-cldemote\" \"-target-feature\" \"+avx\" \"-target-feature\" \"+aes\" \"-target-feature\" \"+sahf\" \"-target-feature\" \"+pclmul\" \"-target-feature\" \"-xop\" \"-target-feature\" \"+crc32\" \"-target-feature\" \"+xsaves\" \"-target-feature\" \"-avx512fp16\" \"-target-feature\" \"-usermsr\" \"-target-feature\" \"-sm4\" \"-target-feature\" \"-egpr\" \"-target-feature\" \"+sse4.1\" \"-target-feature\" \"-avx512ifma\" \"-target-feature\" \"+xsave\" \"-target-feature\" \"+sse4.2\" \"-target-feature\" \"-tsxldtrk\" \"-target-feature\" \"-sm3\" \"-target-feature\" \"-ptwrite\" \"-target-feature\" \"-widekl\" \"-target-feature\" \"+invpcid\" \"-target-feature\" \"+64bit\" \"-target-feature\" \"+xsavec\" \"-target-feature\" \"-avx10.1-512\" \"-target-feature\" \"-avx512vpopcntdq\" \"-target-feature\" \"+cmov\" \"-target-feature\" \"-avx512vp2intersect\" \"-target-feature\" \"+avx512cd\" \"-target-feature\" \"+movbe\" \"-target-feature\" \"-avxvnniint8\" \"-target-feature\" \"-ccmp\" \"-target-feature\" \"-amx-int8\" \"-target-feature\" \"-kl\" \"-target-feature\" \"-avx10.1-256\" \"-target-feature\" \"+evex512\" \"-target-feature\" \"-avxvnni\" \"-target-feature\" \"+rtm\" \"-target-feature\" \"+adx\" \"-target-feature\" \"+avx2\" \"-target-feature\" \"-hreset\" \"-target-feature\" \"-movdiri\" \"-target-feature\" \"-serialize\" \"-target-feature\" \"-sha512\" \"-target-feature\" \"-vpclmulqdq\" \"-target-feature\" \"+avx512vl\" \"-target-feature\" \"-uintr\" \"-target-feature\" \"-cf\" \"-target-feature\" \"+clflushopt\" \"-target-feature\" \"-raoint\" \"-target-feature\" \"-cmpccxadd\" \"-target-feature\" \"+bmi\" \"-target-feature\" \"-amx-tile\" \"-target-feature\" \"+sse\" \"-target-feature\" \"-avx10.2-256\" \"-target-feature\" \"-gfni\" \"-target-feature\" \"-avxvnniint16\" \"-target-feature\" \"-amx-fp16\" \"-target-feature\" \"-zu\" \"-target-feature\" \"-ndd\" \"-target-feature\" \"+xsaveopt\" \"-target-feature\" \"+rdrnd\" \"-target-feature\" \"+avx512f\" \"-target-feature\" \"-amx-bf16\" \"-target-feature\" \"-avx512bf16\" \"-target-feature\" \"-avx512vnni\" \"-target-feature\" \"-push2pop2\" \"-target-feature\" \"+cx8\" \"-target-feature\" \"+avx512bw\" \"-target-feature\" \"+sse3\" \"-target-feature\" \"+pku\" \"-target-feature\" \"-nf\" \"-target-feature\" \"+fsgsbase\" \"-target-feature\" \"-clzero\" \"-target-feature\" \"-mwaitx\" \"-target-feature\" \"-lwp\" \"-target-feature\" \"+lzcnt\" \"-target-feature\" \"-sha\" \"-target-feature\" \"-movdir64b\" \"-target-feature\" \"-ppx\" \"-target-feature\" \"-wbnoinvd\" \"-target-feature\" \"-enqcmd\" \"-target-feature\" \"-avx10.2-512\" \"-target-feature\" \"-avxneconvert\" \"-target-feature\" \"-tbm\" \"-target-feature\" \"-pconfig\" \"-target-feature\" \"-amx-complex\" \"-target-feature\" \"+ssse3\" \"-target-feature\" \"+cx16\" \"-target-feature\" \"+bmi2\" \"-target-feature\" \"+fma\" \"-target-feature\" \"+popcnt\" \"-target-feature\" \"-avxifma\" \"-target-feature\" \"+f16c\" \"-target-feature\" \"-avx512bitalg\" \"-target-feature\" \"-rdpru\" \"-target-feature\" \"+clwb\" \"-target-feature\" \"+mmx\" \"-target-feature\" \"+sse2\" \"-target-feature\" \"+rdseed\" \"-target-feature\" \"-avx512vbmi2\" \"-target-feature\" \"-prefetchi\" \"-target-feature\" \"-rdpid\" \"-target-feature\" \"-fma4\" \"-target-feature\" \"-avx512vbmi\" \"-target-feature\" \"-shstk\" \"-target-feature\" \"-vaes\" \"-target-feature\" \"-waitpkg\" \"-target-feature\" \"-sgx\" \"-target-feature\" \"+fxsr\" \"-target-feature\" \"+avx512dq\" \"-target-feature\" \"-sse4a\" \"-debugger-tuning=gdb\" \"-fdebug-compilation-dir=/scratch3/opt/qmcpack/build_clangPatched_real/src/QMCHamiltonians\" \"-fcoverage-compilation-dir=/scratch3/opt/qmcpack/build_clangPatched_real/src/QMCHamiltonians\" \"-sys-header-deps\" \"-D\" \"ADD_\" \"-D\" \"H5_USE_110_API\" \"-D\" \"HAVE_CONFIG_H\" \"-D\" \"HAVE_EINSPLINE\" \"-D\" \"HAVE_LIBBOOST\" \"-D\" \"HAVE_LIBFFTW\" \"-D\" \"HAVE_MKL\" \"-D\" \"HAVE_MKL_VML\" \"-D\" \"MPICH_SKIP_MPICXX\" \"-D\" \"OMPI_SKIP_MPICXX\" \"-D\" \"OPENMP_NO_COMPLEX\" \"-D\" \"_MPICC_H\" \"-D\" \"restrict=__restrict__\" \"-D\" \"NDEBUG\" \"-O3\" \"-Wvla\" \"-Wall\" \"-Wno-unused-variable\" \"-Wno-overloaded-virtual\" \"-Wno-unused-private-field\" \"-Wno-unused-local-typedef\" \"-Wsuggest-override\" \"-Wno-unknown-pragmas\" \"-Wmisleading-indentation\" \"-std=c++17\" \"-fdeprecated-macro\" \"-ferror-limit\" \"19\" \"-fopenmp\" \"-fgnuc-version=4.2.1\" \"-fskip-odr-check-in-gmf\" \"-fcxx-exceptions\" \"-fexceptions\" \"-fcolor-diagnostics\" \"-vectorize-loops\" \"-vectorize-slp\" \"-faddrsig\" \"-D__GCC_HAVE_DWARF2_CFI_ASM=1\" \"-x\" \"c++\" \"PairCorrEstimator-40412c.cpp\"\r\n```", "author": "ye-luo", "labels": [ "vectorizers", "crash" ], "comments": [] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "9b7491e8669126180253480821d5addde34874d0", "components": [ "IR" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": [ [ 50, 55 ] ], "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": [ "Operator::hasPoisonGeneratingFlags" ], "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/icmp.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "icmp_samesign_logical_or", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @icmp_samesign_logical_or(i32 %In) {\n %c1 = icmp samesign slt i32 %In, 0\n %c2 = icmp samesign ne i32 %In, 1\n %V = select i1 %c1, i1 true, i1 %c2\n ret i1 %V\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "icmp_and_inv_pow2_or_zero_ne_0", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\ndeclare void @llvm.assume(i1 noundef) #0\n\ndefine i1 @icmp_and_inv_pow2_or_zero_ne_0(i32 %A, i32 %B) {\n %popcnt = tail call i32 @llvm.ctpop.i32(i32 %A)\n %cond = icmp ult i32 %popcnt, 2\n call void @llvm.assume(i1 %cond)\n %inv = xor i32 %B, -1\n %and = and i32 %A, %inv\n %cmp = icmp ne i32 %and, 0\n ret i1 %cmp\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #1\n\nattributes #0 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }\nattributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "icmp_samesign_logical_and", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @icmp_samesign_logical_and(i32 %In) {\n %c1 = icmp samesign sgt i32 %In, -1\n %c2 = icmp samesign eq i32 %In, 1\n %V = select i1 %c1, i1 %c2, i1 false\n ret i1 %V\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] `samesign` flag should be dropped", "body": "Reproducer:\r\n```\r\ndefine i1 @src(i32 %In) {\r\n %c1 = icmp samesign sgt i32 %In, -1\r\n %c2 = icmp samesign eq i32 %In, 1\r\n %V = select i1 %c1, i1 %c2, i1 false\r\n ret i1 %V\r\n}\r\n\r\ndefine i1 @tgt(i32 %In) {\r\n %c2 = icmp samesign eq i32 %In, 1\r\n ret i1 %c2\r\n}\r\n```\r\n\r\nWe should check this flag in `Operator::hasPoisonGeneratingFlags`.\r\n", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:ir" ], "comments": [] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "e4b0655b297e4f4b0eb26548c8be48d527ebc178", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": [ [ 2441, 2449 ] ], "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": [ "InstCombinerImpl::foldICmpShlConstant" ], "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/icmp.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "test_icmp_shl_sgt", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @test_icmp_shl_sgt(i64 %x) {\n %shl = shl i64 %x, 32\n %cmp = icmp sgt i64 %shl, 8589934591\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_icmp_shl_nuw_i31", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @test_icmp_shl_nuw_i31(i31 %x) {\n %shl = shl nuw i31 %x, 23\n %cmp = icmp ugt i31 %shl, -50331648\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_icmp_shl_vec", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine <2 x i1> @test_icmp_shl_vec(<2 x i64> %x) {\n %shl = shl <2 x i64> %x, splat (i64 32)\n %cmp = icmp ult <2 x i64> %shl, splat (i64 8589934593)\n ret <2 x i1> %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_icmp_shl_nsw_i31", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @test_icmp_shl_nsw_i31(i31 %x) {\n %shl = shl nsw i31 %x, 23\n %cmp = icmp ugt i31 %shl, -50331648\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_icmp_shl_nsw", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @test_icmp_shl_nsw(i64 %x) {\n %shl = shl nsw i64 %x, 32\n %cmp = icmp ult i64 %shl, 8589934593\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "pr94897", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @pr94897(i32 range(i32 -2147483648, 0) %x) {\n %shl = shl nsw i32 %x, 24\n %cmp = icmp ugt i32 %shl, -50331648\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_icmp_shl_nuw", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @test_icmp_shl_nuw(i64 %x) {\n %shl = shl nuw i64 %x, 32\n %cmp = icmp ult i64 %shl, 8589934593\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "wrong code at -O1 and above on x86_64-linux-gnu", "body": "This appears to be a recent regression as it doesn't reproduce with 18.1.0 and earlier.\r\n\r\nCompiler Explorer: https://godbolt.org/z/T9b4a7z3v\r\n\r\n```console\r\n% clangtk -v\r\nclang version 19.0.0git (https://github.com/llvm/llvm-project.git 338cbfef03e0ab58d7b52f3301928c58b194a1b4)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9\r\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nCandidate multilib: .;@m64\r\nSelected multilib: .;@m64\r\n% \r\n% clangtk -O0 small.c; ./a.out\r\n% clangtk -O1 small.c\r\n% ./a.out\r\nAborted\r\n% cat small.c\r\nint a;\r\nchar b(char c, char d) { return c - d; }\r\nint main() {\r\n int e;\r\n for (a = -10; a > -11; a--)\r\n e = b(a, -1);\r\n if (e > -2)\r\n __builtin_abort();\r\n return 0;\r\n}\r\n```", "author": "zhendongsu", "labels": [ "miscompilation", "confirmed", "llvm:instcombine" ], "comments": [ { "author": "dtcxzyw", "body": "Reproducer: https://alive2.llvm.org/ce/z/_3cyuT\r\n```ll\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\r\n\r\ndefine i1 @src() {\r\nentry:\r\n br label %for.body\r\n\r\nfor.body:\r\n %storemerge4 = phi i32 [ -10, %entry ], [ %dec, %for.body ]\r\n %dec = add nsw i32 %storemerge4, -1\r\n %cmp = icmp ugt i32 %dec, -11\r\n br i1 %cmp, label %for.body, label %for.end\r\n\r\nfor.end:\r\n %sub.i.le = shl nsw i32 %storemerge4, 24\r\n %cmp2 = icmp ugt i32 %sub.i.le, -50331648\r\n ret i1 %cmp2\r\n}\r\n\r\ndefine i1 @tgt() {\r\nentry:\r\n br label %for.body\r\n\r\nfor.body:\r\n %storemerge4 = phi i32 [ -10, %entry ], [ %dec, %for.body ]\r\n %dec = add nsw i32 %storemerge4, -1\r\n %cmp = icmp ugt i32 %dec, -11\r\n br i1 %cmp, label %for.body, label %for.end\r\n\r\nfor.end:\r\n %0 = trunc nuw i32 %storemerge4 to i8\r\n %cmp2 = icmp ugt i8 %0, -3\r\n ret i1 %cmp2\r\n}\r\n```\r\n\r\n`nuw` flag is incorrectly added." }, { "author": "dtcxzyw", "body": "Caused by https://github.com/llvm/llvm-project/commit/5c7c1f6aba467b1c5a51d58fc591314ecd7147ce." } ] }

[ "llvm/test/Transforms/InstSimplify" ]

{ "fix_commit": "97e3220d6312ae00bcbe08673f218bd0f705776b", "components": [ "InstructionSimplify" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": [ [ 4313, 4319 ] ], "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": [ "simplifyWithOpReplaced" ], "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstSimplify/select.ll", "commands": [ "opt < %s -passes=instsimplify -S" ], "tests": [ { "test_name": "select_vector_cmp_with_bitcasts", "test_body": "define <4 x i32> @select_vector_cmp_with_bitcasts(<2 x i64> %x, <4 x i32> %y) {\n %x.bc = bitcast <2 x i64> %x to <4 x i32>\n %y.bc = bitcast <4 x i32> %y to <2 x i64>\n %sub = sub <2 x i64> %x, %y.bc\n %sub.bc = bitcast <2 x i64> %sub to <4 x i32>\n %cmp = icmp eq <4 x i32> %y, %x.bc\n %sel = select <4 x i1> %cmp, <4 x i32> %sub.bc, <4 x i32> zeroinitializer\n ret <4 x i32> %sel\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "select_or_disjoint_eq", "test_body": "define i8 @select_or_disjoint_eq(i8 %x, i8 %y) {\n %cmp = icmp eq i8 %x, %y\n %or = or disjoint i8 %x, %y\n %sel = select i1 %cmp, i8 %x, i8 %or\n ret i8 %sel\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstSimplify] Miscompile with select of vectors and bitcast", "body": "https://alive2.llvm.org/ce/z/xhCFyk\r\n\r\n```llvm\r\ndefine <4 x i32> @src(<2 x i64> %x, <4 x i32> %y) {\r\n %x.bc = bitcast <2 x i64> %x to <4 x i32>\r\n %y.bc = bitcast <4 x i32> %y to <2 x i64>\r\n %sub = sub <2 x i64> %x, %y.bc\r\n %sub.bc = bitcast <2 x i64> %sub to <4 x i32>\r\n %cmp = icmp eq <4 x i32> %y, %x.bc\r\n %sel = select <4 x i1> %cmp, <4 x i32> %sub.bc, <4 x i32> zeroinitializer\r\n ret <4 x i32> %sel\r\n}\r\n\r\ndefine <4 x i32> @tgt(<2 x i64> %x, <4 x i32> %y) {\r\n ret <4 x i32> zeroinitializer\r\n}\r\n```", "author": "nikic", "labels": [ "test-suite", "miscompilation", "llvm:instcombine" ], "comments": [] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "27eaa8a40ef338bea611f693fa8e810b1fc8d78d", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": [ [ 427, 433 ] ], "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": [ "InstCombinerImpl::commonShiftTransforms" ], "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/shl-twice-constant.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "testfunc", "test_body": "@c = external constant i8\n@c2 = external constant i8\n\ndefine i64 @testfunc() {\n %shl1 = shl i64 1, ptrtoint (ptr @c2 to i64)\n %shl2 = shl i64 %shl1, ptrtoint (ptr @c to i64)\n ret i64 %shl2\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] Infinite loop when combining two `shl` instructions", "body": "The following sample triggers an infinite loop in instcombine:\n\n```\n@c = external constant i8\n@c2 = external constant i8\n\ndefine i16 @testfunc() {\nentry:\n %0 = shl i64 1, ptrtoint (ptr @c2 to i64)\n %1 = shl i64 %0, ptrtoint (ptr @c to i64)\n %2 = inttoptr i64 %1 to ptr\n %3 = load i16, ptr %2, align 1\n ret i16 %3\n}\n```\n\nhttps://godbolt.org/z/WP6YvGjPq\n", "author": "momo5502", "labels": [ "llvm:instcombine", "llvm:hang" ], "comments": [ { "author": "momo5502", "body": "I have a potential fix and will create a PR soon" } ] }

[ "llvm/test/Analysis/ScalarEvolution", "llvm/test/Transforms/IndVarSimplify" ]

{ "fix_commit": "f7ef0721d60f85e1f699f8d1b83d4402ae19b122", "components": [ "ScalarEvolution" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": [ [ 2187, 2192 ] ], "llvm/lib/Analysis/ScalarEvolution.cpp": [ [ 4307, 4321 ], [ 5933, 5950 ], [ 7324, 7329 ] ], "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": [ "ScalarEvolution::createAddRecFromPHI", "ScalarEvolution::getSequentialMinMaxExpr", "ScalarEvolution::isGuaranteedNotToBePoison", "ScalarEvolution::isSCEVExprNeverPoison" ], "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Analysis/ScalarEvolution/pr117133.ll", "commands": [ "opt -S -disable-output \"-passes=print<scalar-evolution>\" < %s 2>&1" ], "tests": [ { "test_name": "test_poisonous", "test_body": "define i64 @test_poisonous(i64 %a, i32 %n) {\nentry:\n br label %loop.body\n\nloop.body: ; preds = %loop.body, %entry\n %indvar1 = phi i32 [ 0, %entry ], [ %indvar1.next, %loop.body ]\n %indvar2 = phi i64 [ 0, %entry ], [ %mul, %loop.body ]\n %indvar1.next = add i32 %indvar1, 1\n %ext = zext i32 %indvar1.next to i64\n %mul = mul i64 %ext, %a\n %exitcond = icmp sgt i32 %indvar1.next, %n\n br i1 %exitcond, label %loop.exit, label %loop.body\n\nloop.exit: ; preds = %loop.body\n ret i64 %mul\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "widget", "test_body": "define i32 @widget() {\nb:\n br label %b1\n\nb1: ; preds = %b5, %b\n %phi = phi i32 [ 0, %b ], [ %udiv6, %b5 ]\n %phi2 = phi i32 [ 1, %b ], [ %add, %b5 ]\n %icmp = icmp eq i32 %phi, 0\n br i1 %icmp, label %b3, label %b8\n\nb3: ; preds = %b1\n %udiv = udiv i32 10, %phi2\n %urem = urem i32 %udiv, 10\n %icmp4 = icmp eq i32 %urem, 0\n br i1 %icmp4, label %b7, label %b5\n\nb5: ; preds = %b3\n %udiv6 = udiv i32 %phi2, 0\n %add = add i32 %phi2, 1\n br label %b1\n\nb7: ; preds = %b3\n ret i32 5\n\nb8: ; preds = %b1\n ret i32 7\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/IndVarSimplify/pr117133.ll", "commands": [ "opt -S -passes=indvars < %s" ], "tests": [ { "test_name": "widget", "test_body": "define i32 @widget() {\nb:\n br label %b1\n\nb1: ; preds = %b5, %b\n %phi = phi i32 [ 0, %b ], [ %udiv6, %b5 ]\n %phi2 = phi i32 [ 1, %b ], [ %add, %b5 ]\n %icmp = icmp eq i32 %phi, 0\n br i1 %icmp, label %b3, label %b8\n\nb3: ; preds = %b1\n %udiv = udiv i32 10, %phi2\n %urem = urem i32 %udiv, 10\n %icmp4 = icmp eq i32 %urem, 0\n br i1 %icmp4, label %b7, label %b5\n\nb5: ; preds = %b3\n %udiv6 = udiv i32 %phi2, 0\n %add = add i32 %phi2, 1\n br label %b1\n\nb7: ; preds = %b3\n ret i32 5\n\nb8: ; preds = %b1\n ret i32 7\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[indvars] Miscompile when loop body has an operation with Undefined Behaviour", "body": "Here is the problematic IR:\r\n```\r\ndefine i32 @widget() {\r\nbb:\r\n br label %bb1\r\n\r\nbb1: ; preds = %bb5, %bb\r\n %phi = phi i32 [ 0, %bb ], [ %udiv6, %bb5 ]\r\n %phi2 = phi i32 [ 1, %bb ], [ %add, %bb5 ]\r\n %icmp = icmp eq i32 %phi, 0\r\n br i1 %icmp, label %bb3, label %bb8\r\n\r\nbb3: ; preds = %bb1\r\n %udiv = udiv i32 10, %phi2\r\n %urem = urem i32 %udiv, 10\r\n %icmp4 = icmp eq i32 %urem, 0\r\n br i1 %icmp4, label %bb7, label %bb5\r\n\r\nbb5: ; preds = %bb3\r\n %udiv6 = udiv i32 %phi2, 0\r\n %add = add i32 %phi2, 1\r\n br label %bb1\r\n\r\nbb7: ; preds = %bb3\r\n ret i32 5\r\n\r\nbb8: ; preds = %bb1\r\n ret i32 7\r\n}\r\n```\r\nproduces incorrect IR when `indvars` pass is run. I suspect this is because of the `%udiv6 = udiv i32 %phi2, 0` divide by zero operation. \r\nLook at the indvars transformation here: https://godbolt.org/z/cz1r5178h\r\nThe original IR must return 5, while the transformed IR returns 7\r\n\r\nProof of wrong transformation: https://alive2.llvm.org/ce/z/vPFhzg", "author": "Nirhar", "labels": [ "miscompilation", "llvm:SCEV" ], "comments": [ { "author": "nikic", "body": "Is this a fuzzer-generated test case?" }, { "author": "Nirhar", "body": "> Is this a fuzzer-generated test case?\n\nHi @nikic , yes this test was fuzzer-generated." } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "17bad1a9da228ade0c0b9b020ee99769b188d9b3", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 6389, 6397 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationCostModel::getInstructionCost", "LoopVectorizationCostModel::shouldConsiderInvariant" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/phi-cost.ll", "commands": [ "opt < %s -passes='function(loop-vectorize,instcombine)' -force-vector-width=2 -force-vector-interleave=1 -debug-only=loop-vectorize -disable-output -print-after=instcombine 2>&1" ], "tests": [ { "test_name": "red_phi_0", "test_body": "target datalayout = \"e-m:e-i64:64-i128:128-n32:64-S128\"\n\ndefine i32 @red_phi_0(i32 %start, ptr %src) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %red = phi i32 [ %start, %entry ], [ %red.next, %loop ]\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %red.next = add i32 0, %red\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 100\n br i1 %exitcond.not, label %exit, label %loop\n\nexit: ; preds = %loop\n %res = phi i32 [ %red.next, %loop ]\n ret i32 %res\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "phi_three_incoming_values", "test_body": "target datalayout = \"e-m:e-i64:64-i128:128-n32:64-S128\"\n\ndefine void @phi_three_incoming_values(ptr noalias %a, ptr noalias %b, i64 %n) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %if.end, %entry\n %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ]\n %tmp0 = getelementptr inbounds i32, ptr %a, i64 %i\n %tmp1 = load i32, ptr %tmp0, align 4\n %tmp2 = getelementptr inbounds i32, ptr %b, i64 %i\n %tmp3 = load i32, ptr %tmp2, align 4\n %tmp4 = icmp sgt i32 %tmp1, %tmp3\n br i1 %tmp4, label %if.then, label %if.end\n\nif.then: ; preds = %for.body\n %tmp5 = icmp sgt i32 %tmp1, 19\n br i1 %tmp5, label %if.end, label %if.else\n\nif.else: ; preds = %if.then\n %tmp6 = icmp slt i32 %tmp3, 4\n %tmp7 = select i1 %tmp6, i32 4, i32 5\n br label %if.end\n\nif.end: ; preds = %if.else, %if.then, %for.body\n %tmp8 = phi i32 [ 9, %for.body ], [ 3, %if.then ], [ %tmp7, %if.else ]\n store i32 %tmp8, ptr %tmp0, align 4\n %i.next = add i64 %i, 1\n %cond = icmp eq i64 %i, %n\n br i1 %cond, label %for.end, label %for.body\n\nfor.end: ; preds = %if.end\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "phi_two_incoming_values", "test_body": "target datalayout = \"e-m:e-i64:64-i128:128-n32:64-S128\"\n\ndefine void @phi_two_incoming_values(ptr noalias %a, ptr noalias %b, i64 %n) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %if.end, %entry\n %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ]\n %tmp0 = getelementptr inbounds i32, ptr %a, i64 %i\n %tmp1 = load i32, ptr %tmp0, align 4\n %tmp2 = getelementptr inbounds i32, ptr %b, i64 %i\n %tmp3 = icmp sgt i32 %tmp1, 0\n br i1 %tmp3, label %if.then, label %if.end\n\nif.then: ; preds = %for.body\n %tmp4 = add i32 %tmp1, 1\n br label %if.end\n\nif.end: ; preds = %if.then, %for.body\n %tmp5 = phi i32 [ %tmp1, %for.body ], [ %tmp4, %if.then ]\n store i32 %tmp5, ptr %tmp2, align 4\n %i.next = add i64 %i, 1\n %cond = icmp eq i64 %i, %n\n br i1 %cond, label %for.end, label %for.body\n\nfor.end: ; preds = %if.end\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[clang] Segmentation fault in loop vectorization cost model during optimization pass", "body": "When I compiled this code with -O2 flag, it crashed:\r\n\r\n```c\r\n#include <stdint.h>\r\n#define UNDEFINED(x) ((x), 0)\r\nlong b;\r\nstatic int64_t j = 1;\r\nstatic int64_t *k = &j;\r\nstatic int64_t **l = &k;\r\nint64_t m;\r\nstatic uint64_t n;\r\nint16_t ***o;\r\nstatic int64_t ***p = &l;\r\nuint64_t **q;\r\n\r\nuint16_t\r\nsafe_mod_func_uint16_t_u_u(uint16_t ui1, uint16_t ui2)\r\n{\r\n return \r\n#ifndef UNSAFE\r\n (ui2 == 0) ? \r\n (UNDEFINED(ui1)) : \r\n#endif\r\n (ui1 % ui2);\r\n}\r\n\r\nint64_t\r\nsafe_mod_func_int64_t_s_s(int64_t si1, int64_t si2)\r\n{\r\n return \r\n#ifndef UNSAFE\r\n ((si2 == 0) || ((si1 == INT64_MIN) && (si2 == (-1)))) ? \r\n (UNDEFINED(si1)) : \r\n#endif\r\n (si1 % si2);\r\n}\r\n\r\nint a(int, int, int, int, int) {}\r\nlong c(int d, int *e) {\r\n switch (d) {\r\n case 9:\r\n return b;\r\n case 8:\r\n return *e;\r\n }\r\n}\r\nlong f(int g, long, int h) {\r\n long i = c(g, &h);\r\n return i;\r\n}\r\nint32_t r() { int32_t *s[] = {&k, &m}; }\r\nint32_t t(int32_t *aa) {\r\n uint64_t ab = 2599693332;\r\n uint8_t ac = 142;\r\n for (; n <= 4; n++)\r\n *aa = (safe_mod_func_uint16_t_u_u(\r\n safe_mod_func_int64_t_s_s(a(0, 0, 0, 0, **l + 20) + **l, **q),\r\n ***o |= f(**l, 0, ***p)),\r\n **l + ac + ab - -1695273821 + *aa);\r\n}\r\n```\r\n\r\nThe crash is: clang: error: unable to execute command: Segmentation fault (core dumped)\r\nclang: error: clang frontend command failed due to signal (use -v to see invocation)\r\nCompiler returned: 254\r\n\r\nDetails can be found here: https://godbolt.org/z/3h9j7W6dG", "author": "cardigan1008", "labels": [ "regression", "vectorizers", "crash" ], "comments": [ { "author": "shafik", "body": "This looks like a clang trunk regression: https://godbolt.org/z/MoKeds3ev" } ] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "b634e057ddecc41dce046887d0f0854fed305374", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 11852, 11859 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "castToScalarTyElem" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, 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"llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/revec-fix-99411.ll", "commands": [ "opt -mtriple x86_64-unknown-linux-gnu -passes=slp-vectorizer -S %s" ], "tests": [ { "test_name": "<module>", "test_body": "\ndefine void @e() {\n;\nentry:\n %0 = extractelement <1 x i64> zeroinitializer, i64 0\n %bf.value = and i64 %0, 0\n %bf.set = or i64 0, %bf.value\n store i64 %bf.set, ptr getelementptr inbounds (i8, ptr null, i64 8), align 8\n %bf.value2 = and i64 0, 0\n %bf.set4 = or i64 0, %bf.value2\n store i64 %bf.set4, ptr null, align 8\n ret void\n}", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "A/F: `getNumElements(ScalarTy) < getNumElements(VecTy) && (getNumElements(VecTy) % getNumElements(ScalarTy) == 0)' failed after 1813ffd", "body": "Several of our internal tests started hitting an assertion failure while building, one of which I bisected back to commit 1813ffd. Consider the following code:\r\n```c++\r\ntypedef long long __m64 __attribute__((__vector_size__(8), __aligned__(8)));\r\nstatic __inline__ long long foo(__m64 m) { return (long long) m; }\r\nstruct c {\r\n long a : 43;\r\n long b : 61;\r\n} d;\r\nvoid e() {\r\n volatile __m64 f;\r\n long g, i = d.b = g = foo(f);\r\n d.a = i;\r\n}\r\n```\r\nWhen compiled with optimizations with a compiler that includes 1813ffd, it hits an assertion failure:\r\n```\r\n$ ~/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang -c -O2 repro.cpp \r\nclang: /home/dyung/src/upstream/llvm_clean_git/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:11853: llvm::Value* llvm::slpvectorizer::BoUpSLP::ShuffleInstructionBuilder::castToScalarTyElem(llvm::Value*, std::optional<bool>): Assertion `getNumElements(ScalarTy) < getNumElements(VecTy) && (getNumElements(VecTy) % getNumElements(ScalarTy) == 0)' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0. Program arguments: /home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang -c -O2 repro.cpp\r\n1. <eof> parser at end of file\r\n2. Optimizer\r\n3. Running pass \"function<eager-inv>(float2int,lower-constant-intrinsics,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;sink-common-insts;speculate-blocks;simplify-cond-branch>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-unroll<O2>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch>)\" on module \"repro.cpp\" \r\n4. Running pass \"slp-vectorizer\" on function \"_Z7test119v\"\r\n #0 0x00005650f775179f llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x41a279f) \r\n #1 0x00005650f774f2fc llvm::sys::CleanupOnSignal(unsigned long) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x41a02fc) \r\n #2 0x00005650f76947e8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0 \r\n #3 0x00007ff89a3f9420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420) \r\n #4 0x00007ff899ec600b raise /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1 \r\n #5 0x00007ff899ea5859 abort /build/glibc-LcI20x/glibc-2.31/stdlib/abort.c:81:7 \r\n #6 0x00007ff899ea5729 get_sysdep_segment_value /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:509:8 \r\n #7 0x00007ff899ea5729 _nl_load_domain /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:970:34 \r\n #8 0x00007ff899eb6fd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6) \r\n #9 0x00005650f903005c llvm::slpvectorizer::BoUpSLP::ShuffleInstructionBuilder::castToScalarTyElem(llvm::Value*, std::optional<bool>) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5a8105c)\r\n#10 0x00005650f9071f00 llvm::slpvectorizer::BoUpSLP::ShuffleInstructionBuilder::adjustExtracts(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::MutableArrayRef<int>, llvm::ArrayRef<std::optional<llvm::TargetTransformInfo::ShuffleKind>>, unsigned int, bool&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5ac2f00) \r\n#11 0x00005650f909dfdd llvm::Value* llvm::slpvectorizer::BoUpSLP::processBuildVector<llvm::slpvectorizer::BoUpSLP::ShuffleInstructionBuilder, llvm::Value*, llvm::IRBuilder<llvm::TargetFolder, llvm::IRBuilderDefaultInserter>, llvm::slpvectorizer::BoUpSLP>(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::Type*, llvm::IRBuilder<llvm::TargetFolder, llvm::IRBuilderDefaultInserter>&, llvm::slpvectorizer::BoUpSLP&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5aeefdd)\r\n#12 0x00005650f90a941a llvm::slpvectorizer::BoUpSLP::vectorizeTree(llvm::slpvectorizer::BoUpSLP::TreeEntry*, bool) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5afa41a)\r\n#13 0x00005650f90a80e3 llvm::slpvectorizer::BoUpSLP::vectorizeOperand(llvm::slpvectorizer::BoUpSLP::TreeEntry*, unsigned int, bool) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5af90e3)\r\n#14 0x00005650f90a9484 llvm::slpvectorizer::BoUpSLP::vectorizeTree(llvm::slpvectorizer::BoUpSLP::TreeEntry*, bool) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5afa484)\r\n#15 0x00005650f90a7cdf llvm::slpvectorizer::BoUpSLP::vectorizeOperand(llvm::slpvectorizer::BoUpSLP::TreeEntry*, unsigned int, bool) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5af8cdf)\r\n#16 0x00005650f90ac099 llvm::slpvectorizer::BoUpSLP::vectorizeTree(llvm::slpvectorizer::BoUpSLP::TreeEntry*, bool) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5afd099)\r\n#17 0x00005650f90a7cdf llvm::slpvectorizer::BoUpSLP::vectorizeOperand(llvm::slpvectorizer::BoUpSLP::TreeEntry*, unsigned int, bool) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5af8cdf)\r\n#18 0x00005650f90a9e6c llvm::slpvectorizer::BoUpSLP::vectorizeTree(llvm::slpvectorizer::BoUpSLP::TreeEntry*, bool) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5afae6c)\r\n#19 0x00005650f90c7263 llvm::slpvectorizer::BoUpSLP::vectorizeTree(llvm::MapVector<llvm::Value*, llvm::SmallVector<llvm::Instruction*, 2u>, llvm::DenseMap<llvm::Value*, unsigned int, llvm::DenseMapInfo<llvm::Value*, void>, llvm::detail::DenseMapPair<llvm::Value*, unsigned int>>, llvm::SmallVector<std::pair<llvm::Value*, llvm::SmallVector<llvm::Instruction*, 2u>>, 0u>> const&, llvm::SmallVectorImpl<std::pair<llvm::Value*, llvm::Value*>>&, llvm::Instruction*) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5b18263)\r\n#20 0x00005650f90cacbc llvm::slpvectorizer::BoUpSLP::vectorizeTree() (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5b1bcbc)\r\n#21 0x00005650f90e045b llvm::SLPVectorizerPass::vectorizeStoreChain(llvm::ArrayRef<llvm::Value*>, llvm::slpvectorizer::BoUpSLP&, unsigned int, unsigned int, unsigned int&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5b3145b) \r\n#22 0x00005650f90e1a5e llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&)::'lambda'(std::set<std::pair<unsigned int, int>, llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&)::StoreDistCompare, std::allocator<std::pair<unsigned int, int>>> const&)::operator()(std::set<std::pair<unsigned int, int>, llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&)::StoreDistCompare, std::allocator<std::pair<unsigned int, int>>> const&) const SLPVectorizer.cpp:0:0\r\n#23 0x00005650f90e39a0 llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5b349a0)\r\n#24 0x00005650f90e42c3 llvm::SLPVectorizerPass::vectorizeStoreChains(llvm::slpvectorizer::BoUpSLP&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5b352c3)\r\n#25 0x00005650f90e57dd llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0\r\n#26 0x00005650f90e6253 llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x5b37253)\r\n#27 0x00005650f8baedb6 llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x55ffdb6)\r\n#28 0x00005650f70f6421 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x3b47421)\r\n#29 0x00005650f4cb9ca6 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x170aca6)\r\n#30 0x00005650f70f4ded llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x3b45ded)\r\n#31 0x00005650f4cbac56 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x170bc56)\r\n#32 0x00005650f70f2f31 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x3b43f31)\r\n#33 0x00005650f7a062c8 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#34 0x00005650f7a09645 (anonymous namespace)::EmitAssemblyHelper::EmitAssembly(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#35 0x00005650f7a09ce6 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x445ace6)\r\n#36 0x00005650f808091c clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x4ad191c)\r\n#37 0x00005650f9e7fe6c clang::ParseAST(clang::Sema&, bool, bool) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x68d0e6c)\r\n#38 0x00005650f8080d28 clang::CodeGenAction::ExecuteAction() (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x4ad1d28)\r\n#39 0x00005650f8318339 clang::FrontendAction::Execute() (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x4d69339)\r\n#40 0x00005650f829a98e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x4ceb98e)\r\n#41 0x00005650f8403dc6 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x4e54dc6)\r\n#42 0x00005650f489f105 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x12f0105)\r\n#43 0x00005650f489811a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#44 0x00005650f80c610d void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0\r\n#45 0x00005650f7694cf0 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x40e5cf0)\r\n#46 0x00005650f80c672f clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0\r\n#47 0x00005650f808aa6c clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x4adba6c)\r\n#48 0x00005650f808b4fd clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x4adc4fd)\r\n#49 0x00005650f80935d5 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x4ae45d5)\r\n#50 0x00005650f489c37b clang_main(int, char**, llvm::ToolContext const&) (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x12ed37b)\r\n#51 0x00005650f478ee1b main (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x11dfe1b)\r\n#52 0x00007ff899ea7083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3\r\n#53 0x00005650f4897bae _start (/home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin/clang+0x12e8bae)\r\nclang: error: clang frontend command failed with exit code 134 (use -v to see invocation)\r\nclang version 19.0.0 (https://github.com/llvm/llvm-project.git 1813ffd6b2eb04ee2c296a4399a18748740a439d)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /home/dyung/src/upstream/1813ffd6b2eb04ee2c296a4399a18748740a439d-linux/bin\r\nBuild config: +assertions\r\n```\r\nIf built using the a compiler built from fa0e529 (the parent commit of 1813ffd), the compilation succeeds:\r\n```\r\n$ ~/src/upstream/fa0e52995929ab67dfb468d71fe793be5e1c7f03-linux/bin/clang -c -O2 repro.cpp\r\n$\r\n```\r\n", "author": "dyung", "labels": [ "llvm:SLPVectorizer", "crash" ], "comments": [ { "author": "madhur13490", "body": "@dyung https://godbolt.org/z/ofneqo6zK I don't see here. Am I missing anything?" }, { "author": "dyung", "body": "> @dyung https://godbolt.org/z/ofneqo6zK I don't see here. Am I missing anything?\r\n\r\nI don't know if it reproduces on an ARM targeting compiler, I used an x86-64 targeting x86-64 compiler. Also the compiler currently used by godbolt was built from commit f56cdd4a45b7bbe84be5d4ba9442eb7071605efc which does not include 1813ffd6b2eb04ee2c296a4399a18748740a439d which introduced the issue." }, { "author": "HanKuanChen", "body": "Close the issue since https://github.com/llvm/llvm-project/commit/b634e057ddecc41dce046887d0f0854fed305374 is merged." } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "654bb4e9f287f9ccb5142d1c62a9ab17c16e29d7", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 6817, 6822 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationCostModel::collectValuesToIgnore" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/RISCV/dead-ops-cost.ll", "commands": [ "opt -p loop-vectorize -mtriple riscv64-linux-gnu -mattr=+v,+f -S %s" ], "tests": [ { "test_name": "dead_load", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\n\ndefine void @dead_load(ptr %p, i16 %start) {\nentry:\n %start.ext = sext i16 %start to i64\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ %start.ext, %entry ], [ %iv.next, %loop ]\n %gep = getelementptr i16, ptr %p, i64 %iv\n store i16 0, ptr %gep, align 2\n %l = load i16, ptr %gep, align 2\n %iv.next = add i64 %iv, 3\n %cmp = icmp slt i64 %iv, 111\n br i1 %cmp, label %loop, label %exit\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "cost_of_exit_branch_and_cond_insts", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i16 @llvm.umax.i16(i16, i16) #0\n\ndefine i32 @cost_of_exit_branch_and_cond_insts(ptr %a, ptr %b, i1 %c, i16 %x) {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]\n br i1 %c, label %then, label %loop.exiting\n\nthen: ; preds = %loop.header\n %gep = getelementptr inbounds i32, ptr %b, i32 %iv\n store i1 false, ptr %a, align 1\n store i32 0, ptr %gep, align 4\n br label %loop.exiting\n\nloop.exiting: ; preds = %then, %loop.header\n %iv.next = add i32 %iv, 1\n %umax = tail call i16 @llvm.umax.i16(i16 %x, i16 111)\n %umax.ext = zext i16 %umax to i32\n %sub = sub i32 770, %umax.ext\n %ec = icmp slt i32 %iv, %sub\n br i1 %ec, label %loop.latch, label %exit\n\nloop.latch: ; preds = %loop.exiting\n br label %loop.header\n\nexit: ; preds = %loop.exiting\n br label %return\n\nreturn: ; preds = %exit\n ret i32 0\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "dead_live_out_due_to_scalar_epilogue_required", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\n\ndefine i8 @dead_live_out_due_to_scalar_epilogue_required(ptr %src, ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]\n %idxprom = sext i32 %iv to i64\n %gep.src = getelementptr i8, ptr %src, i64 %idxprom\n %l = load i8, ptr %gep.src, align 1\n %gep.dst = getelementptr i8, ptr %dst, i64 %idxprom\n store i8 0, ptr %gep.dst, align 1\n %iv.next = add i32 %iv, 4\n %cmp = icmp ult i32 %iv, 1001\n br i1 %cmp, label %loop, label %exit\n\nexit: ; preds = %loop\n %r = phi i8 [ %l, %loop ]\n ret i8 %r\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[VPlan] Assertion \" VPlan cost model and legacy cost model disagreed\"' failed.", "body": "Tested using ef7b18a53c0d186dcda1e322be6035407fdedb55\r\n\r\nTestcase:\r\n```c\r\nunsigned short a;\r\nextern int b;\r\nvoid c(_Bool d, int e, long long f[], unsigned short g[][16],\r\n unsigned short h[][16], unsigned short i[][13], short j[][13],\r\n int k[][21], unsigned char l[][21][21], signed char m[][24]) {\r\n for (short n = 0; n < 5; n += -5532)\r\n for (char o = 0; o < 3; o += d)\r\n for (int p = 0; p < -({ g[d][1] > 0115 ? g[d][1] : 0115; }) + 770; p++)\r\n for (_Bool q = 0; q < (_Bool)e; q = 5)\r\n for (_Bool r = 2048749519 ? 8 ? f[d] : 0 : 0; r < 1; r = h)\r\n b = a = 0;\r\n}\r\nvoid hash();\r\nunsigned short a = 6;\r\nlong long f[6];\r\nunsigned short g[6][16];\r\nunsigned short h[1][16];\r\nunsigned short i[1][13];\r\nshort j[1][13];\r\nint k[1][21];\r\nunsigned char l[1][21][21];\r\nsigned char m[1][24];\r\nint main() {\r\n for (long s = 0; s < 6; ++s)\r\n f[s] = 6;\r\n for (long s = 0; s < 16; ++s)\r\n for (long n = 0; n < 16; ++n)\r\n g[s][n] = 7;\r\n c(1, 407418382874, f, g, h, i, j, k, l, m);\r\n hash(a);\r\n}\r\n```\r\nc command:\r\n```\r\n/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/clang -fno-strict-aliasing -march=rv64gcv -flto -O3 -fuse-ld=lld red.c -o rv64gcv.out -w\r\n```\r\n\r\nLLVM IR testcase:\r\n```llvm ir\r\n; ModuleID = 'reduced.bc'\r\ntarget datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\r\ntarget triple = \"riscv64-unknown-linux-gnu\"\r\n\r\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\r\ndeclare i16 @llvm.umax.i16(i16, i16) #0\r\n\r\ndefine i32 @main(ptr %a) #1 {\r\nentry:\r\n br label %for.cond22.preheader.us.us76.us.us.us.us.i.1\r\n\r\nfor.cond22.preheader.us.us76.us.us.us.us.i.1: ; preds = %for.cond22.preheader.us.us76.us.us.us.usthread-pre-split.i.1, %entry\r\n %p.072.us.us77.us.us.us.us.i.1 = phi i32 [ %inc.us.us80.us.us.us.us.i.1, %for.cond22.preheader.us.us76.us.us.us.usthread-pre-split.i.1 ], [ 0, %entry ]\r\n br i1 false, label %for.body41.lr.ph.us.us.us.us.us.us.us.i.1, label %for.cond22.for.cond.cleanup28_crit_edge.us.us.us.us.us.us.i.1\r\n\r\nfor.body41.lr.ph.us.us.us.us.us.us.us.i.1: ; preds = %for.cond22.preheader.us.us76.us.us.us.us.i.1\r\n store i1 false, ptr %a, align 1\r\n store i32 0, ptr null, align 4\r\n br label %for.cond22.for.cond.cleanup28_crit_edge.us.us.us.us.us.us.i.1\r\n\r\nfor.cond22.for.cond.cleanup28_crit_edge.us.us.us.us.us.us.i.1: ; preds = %for.body41.lr.ph.us.us.us.us.us.us.us.i.1, %for.cond22.preheader.us.us76.us.us.us.us.i.1\r\n %inc.us.us80.us.us.us.us.i.1 = add i32 %p.072.us.us77.us.us.us.us.i.1, 1\r\n %narrow.us.us81.us.us.us.us.i.1 = tail call i16 @llvm.umax.i16(i16 0, i16 0)\r\n %spec.select.us.us82.us.us.us.us.i.1 = zext i16 %narrow.us.us81.us.us.us.us.i.1 to i32\r\n %add.us.us83.us.us.us.us.i.1 = sub i32 770, %spec.select.us.us82.us.us.us.us.i.1\r\n %cmp18.us.us84.us.us.us.us.i.1 = icmp slt i32 %p.072.us.us77.us.us.us.us.i.1, %add.us.us83.us.us.us.us.i.1\r\n br i1 %cmp18.us.us84.us.us.us.us.i.1, label %for.cond22.preheader.us.us76.us.us.us.usthread-pre-split.i.1, label %for.cond22.for.cond.cleanup28_crit_edge.us.us.us.us.us.us.i.1.for.cond.cleanup20.us.us.us.us.i.1_crit_edge\r\n\r\nfor.cond22.for.cond.cleanup28_crit_edge.us.us.us.us.us.us.i.1.for.cond.cleanup20.us.us.us.us.i.1_crit_edge: ; preds = %for.cond22.for.cond.cleanup28_crit_edge.us.us.us.us.us.us.i.1\r\n br label %for.cond.cleanup20.us.us.us.us.i.1\r\n\r\nfor.cond.cleanup20.us.us.us.us.i.1: ; preds = %for.cond22.for.cond.cleanup28_crit_edge.us.us.us.us.us.us.i.1.for.cond.cleanup20.us.us.us.us.i.1_crit_edge\r\n ret i32 0\r\n\r\nfor.cond22.preheader.us.us76.us.us.us.usthread-pre-split.i.1: ; preds = %for.cond22.for.cond.cleanup28_crit_edge.us.us.us.us.us.us.i.1\r\n br label %for.cond22.preheader.us.us76.us.us.us.us.i.1\r\n}\r\n\r\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\r\nattributes #1 = { \"target-features\"=\"+64bit,+a,+c,+d,+f,+m,+relax,+v,+zicsr,+zifencei,+zmmul,+zve32f,+zve32x,+zve64d,+zve64f,+zve64x,+zvl128b,+zvl32b,+zvl64b,-b,-e,-experimental-smctr,-experimental-smmpm,-experimental-smnpm,-experimental-ssctr,-experimental-ssnpm,-experimental-sspm,-experimental-supm,-experimental-zacas,-experimental-zalasr,-experimental-zicfilp,-experimental-zicfiss,-experimental-zvbc32e,-experimental-zvkgs,-h,-shcounterenw,-shgatpa,-shtvala,-shvsatpa,-shvstvala,-shvstvecd,-smaia,-smcdeleg,-smcsrind,-smepmp,-smstateen,-ssaia,-ssccfg,-ssccptr,-sscofpmf,-sscounterenw,-sscsrind,-ssqosid,-ssstateen,-ssstrict,-sstc,-sstvala,-sstvecd,-ssu64xl,-svade,-svadu,-svbare,-svinval,-svnapot,-svpbmt,-xcvalu,-xcvbi,-xcvbitmanip,-xcvelw,-xcvmac,-xcvmem,-xcvsimd,-xsfcease,-xsfvcp,-xsfvfnrclipxfqf,-xsfvfwmaccqqq,-xsfvqmaccdod,-xsfvqmaccqoq,-xsifivecdiscarddlone,-xsifivecflushdlone,-xtheadba,-xtheadbb,-xtheadbs,-xtheadcmo,-xtheadcondmov,-xtheadfmemidx,-xtheadmac,-xtheadmemidx,-xtheadmempair,-xtheadsync,-xtheadvdot,-xventanacondops,-xwchc,-za128rs,-za64rs,-zaamo,-zabha,-zalrsc,-zama16b,-zawrs,-zba,-zbb,-zbc,-zbkb,-zbkc,-zbkx,-zbs,-zca,-zcb,-zcd,-zce,-zcf,-zcmop,-zcmp,-zcmt,-zdinx,-zfa,-zfbfmin,-zfh,-zfhmin,-zfinx,-zhinx,-zhinxmin,-zic64b,-zicbom,-zicbop,-zicboz,-ziccamoa,-ziccif,-zicclsm,-ziccrse,-zicntr,-zicond,-zihintntl,-zihintpause,-zihpm,-zimop,-zk,-zkn,-zknd,-zkne,-zknh,-zkr,-zks,-zksed,-zksh,-zkt,-ztso,-zvbb,-zvbc,-zvfbfmin,-zvfbfwma,-zvfh,-zvfhmin,-zvkb,-zvkg,-zvkn,-zvknc,-zvkned,-zvkng,-zvknha,-zvknhb,-zvks,-zvksc,-zvksed,-zvksg,-zvksh,-zvkt,-zvl1024b,-zvl16384b,-zvl2048b,-zvl256b,-zvl32768b,-zvl4096b,-zvl512b,-zvl65536b,-zvl8192b\" }\r\n```\r\n\r\nCommand/backtrace:\r\n```\r\n> /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt -passes=loop-vectorize reduced.ll -S\r\nopt: /scratch/tc-testing/tc-compiler-fuzz-trunk/llvm/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7366: llvm::VectorizationFactor llvm::LoopVectorizationPlanner::computeBestVF(): Assertion `(BestFactor.Width == LegacyVF.Width || planContainsAdditionalSimplifications(getPlanFor(BestFactor.Width), CostCtx, OrigLoop)) && \" VPlan cost model and legacy cost model disagreed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0. Program arguments: /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt -passes=loop-vectorize reduced.ll -S\r\n1. Running pass \"function(loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>)\" on module \"reduced.ll\"\r\n2. Running pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"main\"\r\n #0 0x00005e8221f7d690 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x301e690)\r\n #1 0x00005e8221f7aa9f llvm::sys::RunSignalHandlers() (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x301ba9f)\r\n #2 0x00005e8221f7abf5 SignalHandler(int) Signals.cpp:0:0\r\n #3 0x0000772c88c42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #4 0x0000772c88c969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76\r\n #5 0x0000772c88c969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10\r\n #6 0x0000772c88c969fc pthread_kill ./nptl/pthread_kill.c:89:10\r\n #7 0x0000772c88c42476 gsignal ./signal/../sysdeps/posix/raise.c:27:6\r\n #8 0x0000772c88c287f3 abort ./stdlib/abort.c:81:7\r\n #9 0x0000772c88c2871b _nl_load_domain ./intl/loadmsgcat.c:1177:9\r\n#10 0x0000772c88c39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n#11 0x00005e8220f4a3e0 llvm::LoopVectorizationPlanner::computeBestVF() (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x1feb3e0)\r\n#12 0x00005e8220f60ffb llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2001ffb)\r\n#13 0x00005e8220f64011 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2005011)\r\n#14 0x00005e8220f64687 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2005687)\r\n#15 0x00005e821fdc0fb6 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xe61fb6)\r\n#16 0x00005e8221d8858f llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2e2958f)\r\n#17 0x00005e821fdc4146 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xe65146)\r\n#18 0x00005e8221d8730b llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2e2830b)\r\n#19 0x00005e821fdc03e6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xe613e6)\r\n#20 0x00005e8221d8534d llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2e2634d)\r\n#21 0x00005e821f5e6ee6 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x687ee6)\r\n#22 0x00005e821f5d8c71 optMain (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x679c71)\r\n#23 0x0000772c88c29d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16\r\n#24 0x0000772c88c29e40 call_init ./csu/../csu/libc-start.c:128:20\r\n#25 0x0000772c88c29e40 __libc_start_main ./csu/../csu/libc-start.c:379:5\r\n#26 0x00005e821f5cf025 _start (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x670025)\r\nzsh: IOT instruction (core dumped) /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt\r\n```\r\nhttps://godbolt.org/z/ej1Gax953\r\n\r\nFound via fuzzer\r\n\r\nRelated/prior issue: https://github.com/llvm/llvm-project/issues/106641\r\n\r\ncc @fhahn", "author": "patrick-rivos", "labels": [ "vectorizers", "crash" ], "comments": [] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "2ab5c47c8752b444885d6bfaf6f570a482fb4cdf", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": [ [ 829, 843 ] ], "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": [ "simplifyRecipe" ], "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/interleave-and-scalarize-only.ll", "commands": [ "opt -passes=loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -debug -disable-output %s 2>&1", "opt -passes=loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -S %s" ], "tests": [ { "test_name": "test_scalarize_call", "test_body": "define void @test_scalarize_call(i32 %start, ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i32 [ %start, %entry ], [ %iv.next, %loop ]\n %min = tail call i32 @llvm.smin.i32(i32 %iv, i32 65535)\n %arrayidx = getelementptr inbounds i32, ptr %dst, i32 %iv\n store i32 %min, ptr %arrayidx, align 8\n %iv.next = add nsw i32 %iv, 1\n %tobool.not = icmp eq i32 %iv.next, 1000\n br i1 %tobool.not, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.smin.i32(i32, i32) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "scalarize_ptrtoint", "test_body": "define void @scalarize_ptrtoint(ptr %src, ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %gep = getelementptr ptr, ptr %src, i64 %iv\n %l = load ptr, ptr %gep, align 8\n %cast = ptrtoint ptr %l to i64\n %add = add i64 %cast, 10\n %cast.2 = inttoptr i64 %add to ptr\n store ptr %cast.2, ptr %dst, align 8\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, 0\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "first_order_recurrence_using_induction", "test_body": "define void @first_order_recurrence_using_induction(i32 %n, ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %for = phi i32 [ 0, %entry ], [ %iv.trunc, %loop ]\n %iv.trunc = trunc i64 %iv to i32\n store i32 %for, ptr %dst, align 4\n %iv.next = add nuw nsw i64 %iv, 1\n %iv.next.trunc = trunc i64 %iv.next to i32\n %ec = icmp slt i32 %iv.next.trunc, %n\n br i1 %ec, label %loop, label %exit\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "reduction_with_casts", "test_body": "define i16 @reduction_with_casts() {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %count.0.in1 = phi i32 [ 0, %entry ], [ %add, %loop ]\n %iv = phi i16 [ 1, %entry ], [ %iv.next, %loop ]\n %conv1 = and i32 %count.0.in1, 65535\n %add = add nuw nsw i32 %conv1, 1\n %iv.next = add i16 %iv, 1\n %cmp = icmp eq i16 %iv.next, 10000\n br i1 %cmp, label %exit, label %loop\n\nexit: ; preds = %loop\n %add.lcssa = phi i32 [ %add, %loop ]\n %count.0 = trunc i32 %add.lcssa to i16\n ret i16 %count.0\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "pr76986_trunc_sext_interleaving_only", "test_body": "define void @pr76986_trunc_sext_interleaving_only(i16 %arg, ptr noalias %src, ptr noalias %dst) {\nbb:\n br label %loop\n\nloop: ; preds = %loop, %bb\n %iv = phi i64 [ 0, %bb ], [ %iv.next, %loop ]\n %gep.src = getelementptr inbounds i8, ptr %src, i64 %iv\n %l = load i8, ptr %gep.src, align 1\n %sext = sext i8 %l to i32\n %trunc = trunc i32 %sext to i16\n %sdiv = sdiv i16 %trunc, %arg\n %gep.dst = getelementptr inbounds i16, ptr %dst, i64 %iv\n store i16 %sdiv, ptr %gep.dst, align 2\n %iv.next = add i64 %iv, 1\n %icmp = icmp ult i64 %iv, 14933\n br i1 %icmp, label %loop, label %exit\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_scalarize_with_branch_cond", "test_body": "define void @test_scalarize_with_branch_cond(ptr %src, ptr %dst) {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %d = phi i1 [ false, %entry ], [ %d.next, %loop.latch ]\n %d.next = xor i1 %d, true\n br i1 %d, label %cond.false, label %loop.latch\n\ncond.false: ; preds = %loop.header\n %gep.src = getelementptr inbounds i32, ptr %src, i64 %iv\n %gep.dst = getelementptr inbounds i32, ptr %dst, i64 %iv\n %l = load i32, ptr %gep.src, align 4\n store i32 %l, ptr %gep.dst, align 4\n br label %loop.latch\n\nloop.latch: ; preds = %cond.false, %loop.header\n %iv.next = add nsw i64 %iv, 1\n %ec = icmp eq i64 %iv.next, 1000\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Assertion `State.VF.isVector() && \"Not vectorizing?\"' failed.", "body": "Run opt with -passes=loop-vectorize\r\n\r\nhttps://godbolt.org/z/xdrTfEddx\r\n\r\nTest.ll\r\n```\r\n; ModuleID = './reduced.ll'\r\nsource_filename = \"./reduced.ll\"\r\ntarget datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-ni:1-p2:32:8:8:32-ni:2\"\r\ntarget triple = \"aarch64-none-linux-gnu\"\r\n\r\ndefine void @wombat(i16 %arg) gc \"statepoint-example\" {\r\nbb:\r\n br label %bb1\r\n\r\nbb1: ; preds = %bb1, %bb\r\n %phi = phi i64 [ 0, %bb ], [ %add, %bb1 ]\r\n %sext = sext i8 0 to i32\r\n %add = add i64 %phi, 1\r\n %trunc = trunc i32 %sext to i16\r\n %sdiv = sdiv i16 0, %arg\r\n %sext2 = sext i16 %trunc to i32\r\n %sext3 = sext i32 %sext2 to i64\r\n %icmp = icmp ult i64 %phi, 14933\r\n br i1 %icmp, label %bb1, label %bb4\r\n\r\nbb4: ; preds = %bb1\r\n %phi5 = phi i64 [ %sext3, %bb1 ]\r\n ret void\r\n}\r\n```", "author": "TatyanaDoubts", "labels": [ "vectorizers", "crash" ], "comments": [ { "author": "fhahn", "body": "Taking a look now!" } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "83d9aa27680b6a7f3556fcf13ada70b4be95bab2", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": [ [ 171, 176 ] ], "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": [ "VPTypeAnalysis::inferScalarTypeForRecipe" ], "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/as_cast.ll", "commands": [ "opt -passes=loop-vectorize %s -force-vector-width=1 -force-vector-interleave=2 -S -o -" ], "tests": [ { "test_name": "<module>", "test_body": "\ndefine void @foo(ptr addrspace(1) %in) {\nentry:\n br label %loop\n\nloop:\n %iter = phi i64 [ %next, %loop ], [ 0, %entry ]\n %ascast = addrspacecast ptr addrspace(1) %in to ptr\n %next = add i64 %iter, 1\n %arrayidx = getelementptr inbounds i64, ptr %ascast, i64 %next\n store i64 %next, ptr %arrayidx, align 4\n\n; check that we find the two interleaved blocks with ascast, gep and store:\n\n\n %cmp = icmp eq i64 %next, 7\n br i1 %cmp, label %exit, label %loop\n\n; check that we branch to the exit block\n\nexit:\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[Loop Vectorizer] Unhandled opcode UNREACHABLE executed at llvm/llvm-project/llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp:208!", "body": "```\r\nopt -passes=loop-vectorize before-loop-vectorize.ll\r\n\r\nUnhandled opcode\r\nUNREACHABLE executed at /llvm/llvm-project/llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp:208!\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0. Program arguments: /llvm/llvm-project/build/bin/opt -passes=loop-vectorize before-loop-vectorize.ll\r\n #0 0x0000000003167161 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/llvm/llvm-project/build/bin/opt+0x3167161)\r\n #1 0x00000000031646c4 SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007fcb77b7bdb0 __restore_rt (/lib64/libc.so.6+0x59db0)\r\n #3 0x00007fcb77bc842c __pthread_kill_implementation (/lib64/libc.so.6+0xa642c)\r\n #4 0x00007fcb77b7bd06 gsignal (/lib64/libc.so.6+0x59d06)\r\n #5 0x00007fcb77b4e7d3 abort (/lib64/libc.so.6+0x2c7d3)\r\n #6 0x00000000030ac16a (/llvm/llvm-project/build/bin/opt+0x30ac16a)\r\n #7 0x00000000022ffc8d llvm::VPTypeAnalysis::inferScalarTypeForRecipe(llvm::VPReplicateRecipe const*) (/llvm/llvm-project/build/bin/opt+0x22ffc8d)\r\n #8 0x00000000022ff04c llvm::VPTypeAnalysis::inferScalarType(llvm::VPValue const*) (/llvm/llvm-project/build/bin/opt+0x22ff04c)\r\n #9 0x00000000021cb7f4 llvm::InnerLoopVectorizer::scalarizeInstruction(llvm::Instruction const*, llvm::VPReplicateRecipe*, llvm::VPIteration const&, llvm::VPTransformState&) (/llvm/llvm-project/build/bin/opt+0x21cb7f4)\r\n#10 0x00000000021cecb5 llvm::VPReplicateRecipe::execute(llvm::VPTransformState&) (/llvm/llvm-project/build/bin/opt+0x21cecb5)\r\n#11 0x00000000022f834f llvm::VPBasicBlock::execute(llvm::VPTransformState*) (/llvm/llvm-project/build/bin/opt+0x22f834f)\r\n#12 0x00000000022f0130 llvm::VPRegionBlock::execute(llvm::VPTransformState*) (/llvm/llvm-project/build/bin/opt+0x22f0130)\r\n#13 0x00000000022f03d8 llvm::VPRegionBlock::execute(llvm::VPTransformState*) (/llvm/llvm-project/build/bin/opt+0x22f03d8)\r\n#14 0x00000000022fb806 llvm::VPlan::execute(llvm::VPTransformState*) (/llvm/llvm-project/build/bin/opt+0x22fb806)\r\n#15 0x00000000021e983b llvm::LoopVectorizationPlanner::executePlan(llvm::ElementCount, unsigned int, llvm::VPlan&, llvm::InnerLoopVectorizer&, llvm::DominatorTree*, bool, llvm::DenseMap<llvm::SCEV const*, llvm::Value*, llvm::DenseMapInfo<llvm::SCEV const*, void>, llvm::detail::DenseMapPair<llvm::SCEV const*, llvm::Value*>> const*) (/llvm/llvm-project/build/bin/opt+0x21e983b)\r\n#16 0x00000000021fbbe0 llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/llvm/llvm-project/build/bin/opt+0x21fbbe0)\r\n#17 0x00000000021fde5e llvm::LoopVectorizePass::runImpl(llvm::Function&, llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo*, llvm::TargetLibraryInfo*, llvm::DemandedBits&, llvm::AssumptionCache&, llvm::LoopAccessInfoManager&, llvm::OptimizationRemarkEmitter&, llvm::ProfileSummaryInfo*) (/llvm/llvm-project/build/bin/opt+0x21fde5e)\r\n#18 0x00000000021fef78 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/llvm/llvm-project/build/bin/opt+0x21fef78)\r\n#19 0x0000000001125c8e llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/llvm/llvm-project/build/bin/opt+0x1125c8e)\r\n#20 0x0000000002f8671a llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/llvm/llvm-project/build/bin/opt+0x2f8671a)\r\n#21 0x000000000082c95e llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/llvm/llvm-project/build/bin/opt+0x82c95e)\r\n#22 0x0000000002f853cd llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/llvm/llvm-project/build/bin/opt+0x2f853cd)\r\n#23 0x000000000082da6e llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/llvm/llvm-project/build/bin/opt+0x82da6e)\r\n#24 0x0000000002f832cc llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/llvm/llvm-project/build/bin/opt+0x2f832cc)\r\n#25 0x00000000007a0d5d llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/llvm/llvm-project/build/bin/opt+0x7a0d5d)\r\n#26 0x0000000000793a7c optMain (/llvm/llvm-project/build/bin/opt+0x793a7c)\r\n#27 0x00007fcb77b66e50 __libc_start_call_main (/lib64/libc.so.6+0x44e50)\r\n#28 0x00007fcb77b66efc __libc_start_main@GLIBC_2.2.5 (/lib64/libc.so.6+0x44efc)\r\n#29 0x0000000000789e15 _start (/llvm/llvm-project/build/bin/opt+0x789e15)\r\nAborted (core dumped)\r\n```\r\nInput IR file before-loop-vectorize.ll is:\r\n```\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\n%\"class.sycl::_V1::range\" = type { %\"class.sycl::_V1::detail::array\" }\r\n%\"class.sycl::_V1::detail::array\" = type { [1 x i64] }\r\n\r\n$_ZTSN4sycl3_V16detail18RoundedRangeKernelINS0_4itemILi1ELb1EEELi1EZZ12foo_parallelRNS0_5queueERNS0_6bufferIfLi1ENS1_17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESD_EUlNS0_2idILi1EEEE_EE = comdat any\r\n\r\n$_ZTSZZ12foo_parallelRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_EUlNS0_2idILi1EEEE_ = comdat any\r\n\r\n$_ZTSZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_EUlvE_ = comdat any\r\n\r\n; Function Attrs: convergent norecurse nounwind\r\ndefine weak_odr dso_local spir_kernel void @_ZTSN4sycl3_V16detail18RoundedRangeKernelINS0_4itemILi1ELb1EEELi1EZZ12foo_parallelRNS0_5queueERNS0_6bufferIfLi1ENS1_17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESD_EUlNS0_2idILi1EEEE_EE(ptr noundef byval(%\"class.sycl::_V1::range\") align 8 %_arg_UserRange, ptr addrspace(1) noundef align 4 %_arg_acc, ptr noundef byval(%\"class.sycl::_V1::range\") align 8 %_arg_acc3) local_unnamed_addr #0 comdat !srcloc !7 !kernel_arg_buffer_location !8 !kernel_arg_runtime_aligned !9 !kernel_arg_exclusive_ptr !9 !sycl_fixed_targets !10 !sycl_kernel_omit_args !11 {\r\nentry:\r\n %0 = load i64, ptr %_arg_UserRange, align 8\r\n %agg.tmp7.sroa.0.0.copyload = load i64, ptr %_arg_acc3, align 8\r\n %add.ptr.i = getelementptr inbounds float, ptr addrspace(1) %_arg_acc, i64 %agg.tmp7.sroa.0.0.copyload\r\n %call.i = tail call i64 @_Z21__spirv_WorkgroupId_xv() #5, !noalias !12\r\n %call1.i = tail call i64 @_Z23__spirv_WorkgroupSize_xv() #5, !noalias !12\r\n %mul.i = mul i64 %call1.i, %call.i\r\n %call2.i = tail call i64 @_Z27__spirv_LocalInvocationId_xv() #5, !noalias !12\r\n %add.i = add i64 %mul.i, %call2.i\r\n %call3.i = tail call i64 @_Z22__spirv_GlobalOffset_xv() #5, !noalias !12\r\n %add4.i = add i64 %add.i, %call3.i\r\n %call.i1 = tail call i64 @_Z23__spirv_NumWorkgroups_xv() #5, !noalias !12\r\n %call1.i2 = tail call i64 @_Z23__spirv_WorkgroupSize_xv() #5, !noalias !12\r\n %mul.i3 = mul i64 %call1.i2, %call.i1\r\n %call.i.i.i9.i.i = tail call noundef i64 @_Z22__spirv_GlobalOffset_xv() #6, !noalias !12\r\n %cmp6.not.i.not.i = icmp ult i64 %add4.i, %0\r\n br i1 %cmp6.not.i.not.i, label %for.body.i.preheader, label %_ZNK4sycl3_V16detail18RoundedRangeKernelINS0_4itemILi1ELb1EEELi1EZZ12foo_parallelRNS0_5queueERNS0_6bufferIfLi1ENS1_17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESD_EUlNS0_2idILi1EEEE_EclES4_.exit\r\n\r\nfor.body.i.preheader: ; preds = %entry\r\n br label %for.body.i\r\n\r\nfor.body.i: ; preds = %for.body.i.preheader, %for.body.i\r\n %Gen.sroa.0.019.i = phi i64 [ %add.i.i, %for.body.i ], [ %add4.i, %for.body.i.preheader ]\r\n %conv.i.i = uitofp i64 %Gen.sroa.0.019.i to float\r\n %arrayidx.i.i = getelementptr inbounds float, ptr addrspace(1) %add.ptr.i, i64 %Gen.sroa.0.019.i\r\n %arrayidx.ascast.i.i = addrspacecast ptr addrspace(1) %arrayidx.i.i to ptr\r\n store float %conv.i.i, ptr %arrayidx.ascast.i.i, align 4, !tbaa !17\r\n %add.i.i = add i64 %Gen.sroa.0.019.i, %mul.i3\r\n %cmp6.i.not.i = icmp ult i64 %add.i.i, %0\r\n br i1 %cmp6.i.not.i, label %for.body.i, label %_ZNK4sycl3_V16detail18RoundedRangeKernelINS0_4itemILi1ELb1EEELi1EZZ12foo_parallelRNS0_5queueERNS0_6bufferIfLi1ENS1_17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESD_EUlNS0_2idILi1EEEE_EclES4_.exit.loopexit, !llvm.loop !21\r\n\r\n_ZNK4sycl3_V16detail18RoundedRangeKernelINS0_4itemILi1ELb1EEELi1EZZ12foo_parallelRNS0_5queueERNS0_6bufferIfLi1ENS1_17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESD_EUlNS0_2idILi1EEEE_EclES4_.exit.loopexit: ; preds = %for.body.i\r\n br label %_ZNK4sycl3_V16detail18RoundedRangeKernelINS0_4itemILi1ELb1EEELi1EZZ12foo_parallelRNS0_5queueERNS0_6bufferIfLi1ENS1_17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESD_EUlNS0_2idILi1EEEE_EclES4_.exit\r\n\r\n_ZNK4sycl3_V16detail18RoundedRangeKernelINS0_4itemILi1ELb1EEELi1EZZ12foo_parallelRNS0_5queueERNS0_6bufferIfLi1ENS1_17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESD_EUlNS0_2idILi1EEEE_EclES4_.exit: ; preds = %_ZNK4sycl3_V16detail18RoundedRangeKernelINS0_4itemILi1ELb1EEELi1EZZ12foo_parallelRNS0_5queueERNS0_6bufferIfLi1ENS1_17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESD_EUlNS0_2idILi1EEEE_EclES4_.exit.loopexit, %entry\r\n ret void\r\n}\r\n\r\n; Function Attrs: convergent nounwind\r\ndeclare dso_local noundef i64 @_Z22__spirv_GlobalOffset_xv() local_unnamed_addr #1\r\n\r\n; Function Attrs: convergent norecurse nounwind\r\ndefine weak_odr dso_local spir_kernel void @_ZTSZZ12foo_parallelRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_EUlNS0_2idILi1EEEE_(ptr addrspace(1) noundef align 4 %_arg_acc, ptr noundef byval(%\"class.sycl::_V1::range\") align 8 %_arg_acc3) local_unnamed_addr #0 comdat !srcloc !23 !kernel_arg_buffer_location !24 !kernel_arg_runtime_aligned !25 !kernel_arg_exclusive_ptr !25 !sycl_fixed_targets !10 !sycl_kernel_omit_args !26 {\r\nentry:\r\n %agg.tmp6.sroa.0.0.copyload = load i64, ptr %_arg_acc3, align 8\r\n %add.ptr.i = getelementptr inbounds float, ptr addrspace(1) %_arg_acc, i64 %agg.tmp6.sroa.0.0.copyload\r\n %call.i = tail call i64 @_Z21__spirv_WorkgroupId_xv() #5, !noalias !27\r\n %call1.i = tail call i64 @_Z23__spirv_WorkgroupSize_xv() #5, !noalias !27\r\n %mul.i = mul i64 %call1.i, %call.i\r\n %call2.i = tail call i64 @_Z27__spirv_LocalInvocationId_xv() #5, !noalias !27\r\n %add.i = add i64 %mul.i, %call2.i\r\n %call3.i = tail call i64 @_Z22__spirv_GlobalOffset_xv() #5, !noalias !27\r\n %add4.i = add i64 %add.i, %call3.i\r\n %call.i1 = tail call i64 @_Z23__spirv_NumWorkgroups_xv() #5, !noalias !27\r\n %call1.i2 = tail call i64 @_Z23__spirv_WorkgroupSize_xv() #5, !noalias !27\r\n %call.i.i.i9.i.i = tail call noundef i64 @_Z22__spirv_GlobalOffset_xv() #6, !noalias !27\r\n %cmp.i.i = icmp ult i64 %add4.i, 2147483648\r\n tail call void @llvm.assume(i1 %cmp.i.i)\r\n %conv.i = uitofp i64 %add4.i to float\r\n %arrayidx.i = getelementptr inbounds float, ptr addrspace(1) %add.ptr.i, i64 %add4.i\r\n %arrayidx.ascast.i = addrspacecast ptr addrspace(1) %arrayidx.i to ptr\r\n store float %conv.i, ptr %arrayidx.ascast.i, align 4, !tbaa !17\r\n ret void\r\n}\r\n\r\n; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\r\ndeclare void @llvm.assume(i1 noundef) #2\r\n\r\n; Function Attrs: mustprogress norecurse nounwind\r\ndefine weak_odr dso_local spir_kernel void @_ZTSZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_EUlvE_(i64 noundef %_arg_n, ptr addrspace(1) noundef align 4 %_arg_acc, ptr noundef byval(%\"class.sycl::_V1::range\") align 8 %_arg_acc3) local_unnamed_addr #3 comdat !srcloc !32 !kernel_arg_buffer_location !8 !kernel_arg_runtime_aligned !9 !kernel_arg_exclusive_ptr !9 !sycl_fixed_targets !10 !sycl_kernel_omit_args !11 {\r\nentry:\r\n %agg.tmp6.sroa.0.0.copyload = load i64, ptr %_arg_acc3, align 8\r\n %add.ptr.i = getelementptr inbounds float, ptr addrspace(1) %_arg_acc, i64 %agg.tmp6.sroa.0.0.copyload\r\n %cmp.i12.not = icmp eq i64 %_arg_n, 0\r\n br i1 %cmp.i12.not, label %_ZZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_ENKUlvE_clEv.exit, label %for.body.i.preheader\r\n\r\nfor.body.i.preheader: ; preds = %entry\r\n %xtraiter = and i64 %_arg_n, 7\r\n %0 = icmp ult i64 %_arg_n, 8\r\n br i1 %0, label %_ZZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_ENKUlvE_clEv.exit.loopexit.unr-lcssa, label %for.body.i.preheader.new\r\n\r\nfor.body.i.preheader.new: ; preds = %for.body.i.preheader\r\n %unroll_iter = and i64 %_arg_n, -8\r\n br label %for.body.i\r\n\r\nfor.body.i: ; preds = %for.body.i, %for.body.i.preheader.new\r\n %i.0.i13 = phi i64 [ 0, %for.body.i.preheader.new ], [ %inc.i.7, %for.body.i ]\r\n %conv.i = uitofp i64 %i.0.i13 to float\r\n %arrayidx.i = getelementptr inbounds float, ptr addrspace(1) %add.ptr.i, i64 %i.0.i13\r\n %arrayidx.ascast.i = addrspacecast ptr addrspace(1) %arrayidx.i to ptr\r\n store float %conv.i, ptr %arrayidx.ascast.i, align 4, !tbaa !17\r\n %inc.i = or disjoint i64 %i.0.i13, 1\r\n %conv.i.1 = uitofp i64 %inc.i to float\r\n %arrayidx.i.1 = getelementptr inbounds float, ptr addrspace(1) %add.ptr.i, i64 %inc.i\r\n %arrayidx.ascast.i.1 = addrspacecast ptr addrspace(1) %arrayidx.i.1 to ptr\r\n store float %conv.i.1, ptr %arrayidx.ascast.i.1, align 4, !tbaa !17\r\n %inc.i.1 = or disjoint i64 %i.0.i13, 2\r\n %conv.i.2 = uitofp i64 %inc.i.1 to float\r\n %arrayidx.i.2 = getelementptr inbounds float, ptr addrspace(1) %add.ptr.i, i64 %inc.i.1\r\n %arrayidx.ascast.i.2 = addrspacecast ptr addrspace(1) %arrayidx.i.2 to ptr\r\n store float %conv.i.2, ptr %arrayidx.ascast.i.2, align 4, !tbaa !17\r\n %inc.i.2 = or disjoint i64 %i.0.i13, 3\r\n %conv.i.3 = uitofp i64 %inc.i.2 to float\r\n %arrayidx.i.3 = getelementptr inbounds float, ptr addrspace(1) %add.ptr.i, i64 %inc.i.2\r\n %arrayidx.ascast.i.3 = addrspacecast ptr addrspace(1) %arrayidx.i.3 to ptr\r\n store float %conv.i.3, ptr %arrayidx.ascast.i.3, align 4, !tbaa !17\r\n %inc.i.3 = or disjoint i64 %i.0.i13, 4\r\n %conv.i.4 = uitofp i64 %inc.i.3 to float\r\n %arrayidx.i.4 = getelementptr inbounds float, ptr addrspace(1) %add.ptr.i, i64 %inc.i.3\r\n %arrayidx.ascast.i.4 = addrspacecast ptr addrspace(1) %arrayidx.i.4 to ptr\r\n store float %conv.i.4, ptr %arrayidx.ascast.i.4, align 4, !tbaa !17\r\n %inc.i.4 = or disjoint i64 %i.0.i13, 5\r\n %conv.i.5 = uitofp i64 %inc.i.4 to float\r\n %arrayidx.i.5 = getelementptr inbounds float, ptr addrspace(1) %add.ptr.i, i64 %inc.i.4\r\n %arrayidx.ascast.i.5 = addrspacecast ptr addrspace(1) %arrayidx.i.5 to ptr\r\n store float %conv.i.5, ptr %arrayidx.ascast.i.5, align 4, !tbaa !17\r\n %inc.i.5 = or disjoint i64 %i.0.i13, 6\r\n %conv.i.6 = uitofp i64 %inc.i.5 to float\r\n %arrayidx.i.6 = getelementptr inbounds float, ptr addrspace(1) %add.ptr.i, i64 %inc.i.5\r\n %arrayidx.ascast.i.6 = addrspacecast ptr addrspace(1) %arrayidx.i.6 to ptr\r\n store float %conv.i.6, ptr %arrayidx.ascast.i.6, align 4, !tbaa !17\r\n %inc.i.6 = or disjoint i64 %i.0.i13, 7\r\n %conv.i.7 = uitofp i64 %inc.i.6 to float\r\n %arrayidx.i.7 = getelementptr inbounds float, ptr addrspace(1) %add.ptr.i, i64 %inc.i.6\r\n %arrayidx.ascast.i.7 = addrspacecast ptr addrspace(1) %arrayidx.i.7 to ptr\r\n store float %conv.i.7, ptr %arrayidx.ascast.i.7, align 4, !tbaa !17\r\n %inc.i.7 = add nuw i64 %i.0.i13, 8\r\n %niter.ncmp.7 = icmp eq i64 %inc.i.7, %unroll_iter\r\n br i1 %niter.ncmp.7, label %_ZZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_ENKUlvE_clEv.exit.loopexit.unr-lcssa, label %for.body.i, !llvm.loop !33\r\n\r\n_ZZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_ENKUlvE_clEv.exit.loopexit.unr-lcssa: ; preds = %for.body.i, %for.body.i.preheader\r\n %i.0.i13.unr = phi i64 [ 0, %for.body.i.preheader ], [ %unroll_iter, %for.body.i ]\r\n %lcmp.mod.not = icmp eq i64 %xtraiter, 0\r\n br i1 %lcmp.mod.not, label %_ZZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_ENKUlvE_clEv.exit, label %for.body.i.epil\r\n\r\nfor.body.i.epil: ; preds = %_ZZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_ENKUlvE_clEv.exit.loopexit.unr-lcssa, %for.body.i.epil\r\n %i.0.i13.epil = phi i64 [ %inc.i.epil, %for.body.i.epil ], [ %i.0.i13.unr, %_ZZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_ENKUlvE_clEv.exit.loopexit.unr-lcssa ]\r\n %epil.iter = phi i64 [ %epil.iter.next, %for.body.i.epil ], [ 0, %_ZZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_ENKUlvE_clEv.exit.loopexit.unr-lcssa ]\r\n %conv.i.epil = uitofp i64 %i.0.i13.epil to float\r\n %arrayidx.i.epil = getelementptr inbounds float, ptr addrspace(1) %add.ptr.i, i64 %i.0.i13.epil\r\n %arrayidx.ascast.i.epil = addrspacecast ptr addrspace(1) %arrayidx.i.epil to ptr\r\n store float %conv.i.epil, ptr %arrayidx.ascast.i.epil, align 4, !tbaa !17\r\n %inc.i.epil = add nuw nsw i64 %i.0.i13.epil, 1\r\n %epil.iter.next = add nuw nsw i64 %epil.iter, 1\r\n %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter\r\n br i1 %epil.iter.cmp.not, label %_ZZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_ENKUlvE_clEv.exit, label %for.body.i.epil, !llvm.loop !34\r\n\r\n_ZZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_ENKUlvE_clEv.exit: ; preds = %for.body.i.epil, %_ZZZ15foo_single_taskRN4sycl3_V15queueERNS0_6bufferIfLi1ENS0_6detail17aligned_allocatorIfEEvEEmENKUlRNS0_7handlerEE_clESA_ENKUlvE_clEv.exit.loopexit.unr-lcssa, %entry\r\n ret void\r\n}\r\n\r\n; Function Attrs: convergent nounwind\r\ndeclare dso_local i64 @_Z21__spirv_WorkgroupId_xv() local_unnamed_addr #4\r\n\r\n; Function Attrs: convergent nounwind\r\ndeclare dso_local i64 @_Z23__spirv_WorkgroupSize_xv() local_unnamed_addr #4\r\n\r\n; Function Attrs: convergent nounwind\r\ndeclare dso_local i64 @_Z27__spirv_LocalInvocationId_xv() local_unnamed_addr #4\r\n\r\n; Function Attrs: convergent nounwind\r\ndeclare dso_local i64 @_Z23__spirv_NumWorkgroups_xv() local_unnamed_addr #4\r\n\r\nattributes #0 = { convergent norecurse nounwind \"min-legal-vector-width\"=\"0\" \"no-trapping-math\"=\"true\" \"stack-protector-buffer-size\"=\"8\" \"sycl-module-id\"=\"native_cpu.cpp\" \"sycl-optlevel\"=\"2\" \"target-cpu\"=\"x86-64\" \"target-features\"=\"+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87\" \"tune-cpu\"=\"generic\" \"uniform-work-group-size\"=\"true\" }\r\nattributes #1 = { convergent nounwind \"no-trapping-math\"=\"true\" \"stack-protector-buffer-size\"=\"8\" \"target-cpu\"=\"x86-64\" \"target-features\"=\"+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87\" \"tune-cpu\"=\"generic\" }\r\nattributes #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }\r\nattributes #3 = { mustprogress norecurse nounwind \"min-legal-vector-width\"=\"0\" \"no-trapping-math\"=\"true\" \"stack-protector-buffer-size\"=\"8\" \"sycl-module-id\"=\"native_cpu.cpp\" \"sycl-optlevel\"=\"2\" \"sycl-single-task\" \"target-cpu\"=\"x86-64\" \"target-features\"=\"+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87\" \"tune-cpu\"=\"generic\" \"uniform-work-group-size\"=\"true\" }\r\nattributes #4 = { convergent nounwind \"frame-pointer\"=\"all\" \"no-builtins\" \"no-trapping-math\"=\"true\" \"stack-protector-buffer-size\"=\"8\" \"target-cpu\"=\"x86-64\" \"target-features\"=\"+avx,+avx2,+avx512f,+cmov,+crc32,+cx8,+evex512,+f16c,+fma,+fxsr,+mmx,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87,+xsave\" \"tune-cpu\"=\"generic\" }\r\nattributes #5 = { convergent nobuiltin nounwind \"no-builtins\" }\r\nattributes #6 = { convergent nounwind }\r\n\r\n!opencl.spir.version = !{!0}\r\n!spirv.Source = !{!1}\r\n!llvm.ident = !{!2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2, !2}\r\n!llvm.module.flags = !{!3, !4, !5, !6}\r\n\r\n!0 = !{i32 1, i32 2}\r\n!1 = !{i32 4, i32 100000}\r\n!2 = !{!\"clang version 19.0.0git (https://github.com/intel/llvm.git f56d7d7ffd798e78146510bef7ba02575d53bbb2)\"}\r\n!3 = !{i32 1, !\"wchar_size\", i32 4}\r\n!4 = !{i32 1, !\"is-native-cpu\", i32 1}\r\n!5 = !{i32 7, !\"uwtable\", i32 2}\r\n!6 = !{i32 7, !\"frame-pointer\", i32 2}\r\n!7 = !{i32 8377463}\r\n!8 = !{i32 -1, i32 -1, i32 -1}\r\n!9 = !{i1 false, i1 true, i1 false}\r\n!10 = !{}\r\n!11 = !{i1 false, i1 false, i1 true, i1 true, i1 false}\r\n!12 = !{!13, !15}\r\n!13 = distinct !{!13, !14, !\"_ZN4sycl3_V16detail7Builder7getItemILi1ELb1EEENSt9enable_ifIXT0_EKNS0_4itemIXT_EXT0_EEEE4typeEv: %agg.result\"}\r\n!14 = distinct !{!14, !\"_ZN4sycl3_V16detail7Builder7getItemILi1ELb1EEENSt9enable_ifIXT0_EKNS0_4itemIXT_EXT0_EEEE4typeEv\"}\r\n!15 = distinct !{!15, !16, !\"_ZN4sycl3_V16detail7Builder10getElementILi1ELb1EEEDTcl7getItemIXT_EXT0_EEEEPNS0_4itemIXT_EXT0_EEE: %agg.result\"}\r\n!16 = distinct !{!16, !\"_ZN4sycl3_V16detail7Builder10getElementILi1ELb1EEEDTcl7getItemIXT_EXT0_EEEEPNS0_4itemIXT_EXT0_EEE\"}\r\n!17 = !{!18, !18, i64 0}\r\n!18 = !{!\"float\", !19, i64 0}\r\n!19 = !{!\"omnipotent char\", !20, i64 0}\r\n!20 = !{!\"Simple C++ TBAA\"}\r\n!21 = distinct !{!21, !22}\r\n!22 = !{!\"llvm.loop.mustprogress\"}\r\n!23 = !{i32 738}\r\n!24 = !{i32 -1, i32 -1}\r\n!25 = !{i1 true, i1 false}\r\n!26 = !{i1 false, i1 true, i1 true, i1 false}\r\n!27 = !{!28, !30}\r\n!28 = distinct !{!28, !29, !\"_ZN4sycl3_V16detail7Builder7getItemILi1ELb1EEENSt9enable_ifIXT0_EKNS0_4itemIXT_EXT0_EEEE4typeEv: %agg.result\"}\r\n!29 = distinct !{!29, !\"_ZN4sycl3_V16detail7Builder7getItemILi1ELb1EEENSt9enable_ifIXT0_EKNS0_4itemIXT_EXT0_EEEE4typeEv\"}\r\n!30 = distinct !{!30, !31, !\"_ZN4sycl3_V16detail7Builder10getElementILi1ELb1EEEDTcl7getItemIXT_EXT0_EEEEPNS0_4itemIXT_EXT0_EEE: %agg.result\"}\r\n!31 = distinct !{!31, !\"_ZN4sycl3_V16detail7Builder10getElementILi1ELb1EEEDTcl7getItemIXT_EXT0_EEEEPNS0_4itemIXT_EXT0_EEE\"}\r\n!32 = !{i32 1035}\r\n!33 = distinct !{!33, !22}\r\n!34 = distinct !{!34, !35}\r\n!35 = !{!\"llvm.loop.unroll.disable\"}\r\n\r\n```", "author": "wenju-he", "labels": [ "vectorizers", "crash" ], "comments": [ { "author": "PietroGhg", "body": "Hi, this should be addressed by https://github.com/llvm/llvm-project/pull/92107" } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "f0e34f381866b82a26241f7e9aa5964f0dd11ebd", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 7147, 7153 ], [ 7250, 7259 ], [ 7284, 7299 ], [ 7364, 7371 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationPlanner::computeBestVF", "LoopVectorizationPlanner::precomputeCosts", "planContainsAdditionalSimplifications" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/RISCV/truncate-to-minimal-bitwidth-cost.ll", "commands": [ "opt -p loop-vectorize -mattr=+v -S %s" ], "tests": [ { "test_name": "truncate_to_i1_used_by_branch", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @truncate_to_i1_used_by_branch(i8 %x, ptr %dst) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %f.039 = phi i8 [ 0, %entry ], [ %add, %loop.latch ]\n %0 = or i8 23, %x\n %extract.t = trunc i8 %0 to i1\n br i1 %extract.t, label %then, label %loop.latch\n\nthen: ; preds = %loop.header\n store i8 0, ptr %dst, align 1\n br label %loop.latch\n\nloop.latch: ; preds = %then, %loop.header\n %add = add i8 %f.039, 1\n %conv = sext i8 %f.039 to i32\n %cmp = icmp slt i32 %conv, 1\n br i1 %cmp, label %loop.header, label %exit\n\nexit: ; preds = %loop.latch\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+64bit,+v,+zvl256b\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_pr98413_sext_removed", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @test_pr98413_sext_removed(ptr %src, ptr noalias %dst, i64 %x) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %gep.src = getelementptr inbounds i16, ptr %src, i64 %iv\n %l = load i16, ptr %gep.src, align 8\n %ext.l = sext i16 %l to i64\n %and = and i64 %x, %ext.l\n %trunc.and = trunc i64 %and to i8\n %gep.dst = getelementptr inbounds i8, ptr %dst, i64 %iv\n store i8 %trunc.and, ptr %gep.dst, align 1\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv, 96\n br i1 %exitcond.not, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_pr98413_zext_removed", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @test_pr98413_zext_removed(ptr %src, ptr noalias %dst, i64 %x) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %gep.src = getelementptr inbounds i16, ptr %src, i64 %iv\n %l = load i16, ptr %gep.src, align 8\n %ext.l = zext i16 %l to i64\n %and = and i64 %x, %ext.l\n %trunc.and = trunc i64 %and to i8\n %gep.dst = getelementptr inbounds i8, ptr %dst, i64 %iv\n store i8 %trunc.and, ptr %gep.dst, align 1\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv, 96\n br i1 %exitcond.not, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[VPlan] Assertion \" VPlan cost model and legacy cost model disagreed\"' failed.", "body": "Tested using c4906588ce47de33d59bcd95f3e82ce2c3e61c23\r\n\r\nTestcase:\r\n```c\r\n_Bool a;\r\nchar b;\r\nunsigned char c;\r\nvoid d(_Bool e[][6]) {\r\n for (signed char f = 0; f < c; f += 3)\r\n for (_Bool g = ({\r\n __typeof__(0) h = e[1][2];\r\n e[f][f] > h ?: h;\r\n });\r\n g; g = b)\r\n for (_Bool i = 0; i < (0 >= 0); i = 1)\r\n a = 0;\r\n}\r\n```\r\nhttps://godbolt.org/z/Eab8s5e1K\r\n\r\nReduced LLVM IR Testcase:\r\n```llvm ir\r\n; ModuleID = 'reduced.bc'\r\ntarget datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\r\ntarget triple = \"riscv64-unknown-linux-gnu\"\r\n\r\ndefine void @d() #0 {\r\nentry:\r\n br label %for.body\r\n\r\nfor.cond.cleanup.loopexit: ; preds = %for.cond.cleanup14\r\n ret void\r\n\r\nfor.body: ; preds = %for.cond.cleanup14, %entry\r\n %f.039 = phi i8 [ %add, %for.cond.cleanup14 ], [ 0, %entry ]\r\n %0 = or i8 0, 0\r\n %extract.t = trunc i8 %0 to i1\r\n br i1 %extract.t, label %for.body22.lr.ph, label %for.cond.cleanup14\r\n\r\nfor.body22.lr.ph: ; preds = %for.body\r\n store i8 0, ptr null, align 1\r\n br label %for.cond.cleanup14\r\n\r\nfor.cond.cleanup14: ; preds = %for.body22.lr.ph, %for.body\r\n %add = add i8 %f.039, 1\r\n %conv = sext i8 %f.039 to i32\r\n %cmp = icmp slt i32 %conv, 1\r\n br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit\r\n}\r\n\r\nattributes #0 = { \"target-features\"=\"+64bit,+a,+c,+d,+f,+m,+relax,+v,+zicsr,+zifencei,+zmmul,+zve32f,+zve32x,+zve64d,+zve64f,+zve64x,+zvl128b,+zvl256b,+zvl32b,+zvl64b,-b,-e,-experimental-smctr,-experimental-smmpm,-experimental-smnpm,-experimental-ssctr,-experimental-ssnpm,-experimental-sspm,-experimental-supm,-experimental-zacas,-experimental-zalasr,-experimental-zicfilp,-experimental-zicfiss,-experimental-zvbc32e,-experimental-zvkgs,-h,-shcounterenw,-shgatpa,-shtvala,-shvsatpa,-shvstvala,-shvstvecd,-smaia,-smcdeleg,-smcsrind,-smepmp,-smstateen,-ssaia,-ssccfg,-ssccptr,-sscofpmf,-sscounterenw,-sscsrind,-ssqosid,-ssstateen,-ssstrict,-sstc,-sstvala,-sstvecd,-ssu64xl,-svade,-svadu,-svbare,-svinval,-svnapot,-svpbmt,-xcvalu,-xcvbi,-xcvbitmanip,-xcvelw,-xcvmac,-xcvmem,-xcvsimd,-xsfcease,-xsfvcp,-xsfvfnrclipxfqf,-xsfvfwmaccqqq,-xsfvqmaccdod,-xsfvqmaccqoq,-xsifivecdiscarddlone,-xsifivecflushdlone,-xtheadba,-xtheadbb,-xtheadbs,-xtheadcmo,-xtheadcondmov,-xtheadfmemidx,-xtheadmac,-xtheadmemidx,-xtheadmempair,-xtheadsync,-xtheadvdot,-xventanacondops,-xwchc,-za128rs,-za64rs,-zaamo,-zabha,-zalrsc,-zama16b,-zawrs,-zba,-zbb,-zbc,-zbkb,-zbkc,-zbkx,-zbs,-zca,-zcb,-zcd,-zce,-zcf,-zcmop,-zcmp,-zcmt,-zdinx,-zfa,-zfbfmin,-zfh,-zfhmin,-zfinx,-zhinx,-zhinxmin,-zic64b,-zicbom,-zicbop,-zicboz,-ziccamoa,-ziccif,-zicclsm,-ziccrse,-zicntr,-zicond,-zihintntl,-zihintpause,-zihpm,-zimop,-zk,-zkn,-zknd,-zkne,-zknh,-zkr,-zks,-zksed,-zksh,-zkt,-ztso,-zvbb,-zvbc,-zvfbfmin,-zvfbfwma,-zvfh,-zvfhmin,-zvkb,-zvkg,-zvkn,-zvknc,-zvkned,-zvkng,-zvknha,-zvknhb,-zvks,-zvksc,-zvksed,-zvksg,-zvksh,-zvkt,-zvl1024b,-zvl16384b,-zvl2048b,-zvl32768b,-zvl4096b,-zvl512b,-zvl65536b,-zvl8192b\" }\r\n```\r\n\r\nCommand/backtrace:\r\n```\r\n> /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt -passes=loop-vectorize reduced.ll -S\r\nopt: /scratch/tc-testing/tc-compiler-fuzz-trunk/llvm/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7365: llvm::VectorizationFactor llvm::LoopVectorizationPlanner::computeBestVF(): Assertion `(BestFactor.Width == LegacyVF.Width || planContainsAdditionalSimplifications(getPlanFor(BestFactor.Width), BestFactor.Width, CostCtx, OrigLoop, CM)) && \" VPlan cost model and legacy cost model disagreed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0. Program arguments: /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt -passes=loop-vectorize reduced.ll -S\r\n1. Running pass \"function(loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>)\" on module \"reduced.ll\"\r\n2. Running pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"d\"\r\n #0 0x000064cd5b412560 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x301e560)\r\n #1 0x000064cd5b40f96f llvm::sys::RunSignalHandlers() (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x301b96f)\r\n #2 0x000064cd5b40fac5 SignalHandler(int) Signals.cpp:0:0\r\n #3 0x000072ec5a042520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #4 0x000072ec5a0969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76\r\n #5 0x000072ec5a0969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10\r\n #6 0x000072ec5a0969fc pthread_kill ./nptl/pthread_kill.c:89:10\r\n #7 0x000072ec5a042476 gsignal ./signal/../sysdeps/posix/raise.c:27:6\r\n #8 0x000072ec5a0287f3 abort ./stdlib/abort.c:81:7\r\n #9 0x000072ec5a02871b _nl_load_domain ./intl/loadmsgcat.c:1177:9\r\n#10 0x000072ec5a039e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n#11 0x000064cd5a3dd109 llvm::LoopVectorizationPlanner::computeBestVF() (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x1fe9109)\r\n#12 0x000064cd5a3f3ccb llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x1fffccb)\r\n#13 0x000064cd5a3f6ce1 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2002ce1)\r\n#14 0x000064cd5a3f7357 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2003357)\r\n#15 0x000064cd592541b6 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xe601b6)\r\n#16 0x000064cd5b21d41f llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2e2941f)\r\n#17 0x000064cd59257346 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xe63346)\r\n#18 0x000064cd5b21c19b llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2e2819b)\r\n#19 0x000064cd592535e6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xe5f5e6)\r\n#20 0x000064cd5b21a1dd llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2e261dd)\r\n#21 0x000064cd58a7c106 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x688106)\r\n#22 0x000064cd58a6de91 optMain (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x679e91)\r\n#23 0x000072ec5a029d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16\r\n#24 0x000072ec5a029e40 call_init ./csu/../csu/libc-start.c:128:20\r\n#25 0x000072ec5a029e40 __libc_start_main ./csu/../csu/libc-start.c:379:5\r\n#26 0x000064cd58a64245 _start (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x670245)\r\nzsh: IOT instruction (core dumped) /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt\r\n```\r\nhttps://godbolt.org/z/EzdEYKW7c\r\n\r\nFound via fuzzer\r\n\r\nRelated/prior issue: #106417\r\n\r\ncc @fhahn", "author": "patrick-rivos", "labels": [ "vectorizers", "crash" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "e914421d7fbf22059ea2180233add0c914ec80f0", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 12068, 12075 ], [ 15784, 15791 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::getTreeCost", "BoUpSLP::vectorizeTree" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "<issue>", "commands": [ "opt -S --passes=slp-vectorizer < %s" ], "tests": [ { "test_name": "add3_i96", "test_body": "@0 = external global i1\n\ndefine <3 x i32> @add3_i96.2(<3 x i32> %0, <3 x i32> %1) {\n %4 = extractelement <3 x i32> %0, i64 0\n %5 = sext i32 %4 to i64\n %6 = extractelement <3 x i32> %1, i64 0\n %7 = zext i32 %6 to i64\n %8 = add nuw nsw i64 %7, %5\n %9 = extractelement <3 x i32> %0, i64 1\n %10 = zext i32 %9 to i64\n %11 = extractelement <3 x i32> %1, i64 1\n %12 = zext i32 %11 to i64\n %13 = add nuw nsw i64 %12, %10\n %14 = lshr i64 %8, 32\n %15 = add nuw nsw i64 %13, %14\n %16 = extractelement <3 x i32> %0, i64 2\n %17 = extractelement <3 x i32> %1, i64 2\n %18 = add i32 %17, %16\n %19 = or i64 %15, 32\n %20 = trunc i64 %19 to i32\n %21 = add i32 %18, %17\n %22 = trunc i64 %8 to i32\n %23 = insertelement <3 x i32> %1, i32 %22, i32 0\n ret <3 x i32> %23\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "`slp-vectorizer` miscompilation", "body": "Alive2 report: https://alive2.llvm.org/ce/z/FmxNvP\r\n\r\n```llvm\r\n----------------------------------------\r\ndefine <3 x i32> @add3_i96.2(<3 x i32> %#0, <3 x i32> %#1) {\r\n#2:\r\n %#3 = extractelement <3 x i32> %#0, i64 0\r\n %#4 = sext i32 %#3 to i64\r\n %#5 = extractelement <3 x i32> %#1, i64 0\r\n %#6 = zext i32 %#5 to i64\r\n %#7 = add nsw nuw i64 %#6, %#4\r\n %#21 = trunc i64 %#7 to i32\r\n %#22 = insertelement <3 x i32> %#1, i32 %#21, i32 0\r\n ret <3 x i32> %#22\r\n}\r\n=>\r\ndefine <3 x i32> @add3_i96.2(<3 x i32> %#0, <3 x i32> %#1) {\r\n#2:\r\n %#3 = shufflevector <3 x i32> %#1, <3 x i32> %#0, 0, 3\r\n %#4 = extractelement <2 x i32> %#3, i32 0\r\n %#5 = sext i32 %#4 to i64\r\n %#6 = extractelement <2 x i32> %#3, i32 1\r\n %#7 = sext i32 %#6 to i64\r\n %#8 = add nsw nuw i64 %#5, %#7\r\n %#22 = trunc i64 %#8 to i32\r\n %#23 = insertelement <3 x i32> %#1, i32 %#22, i32 0\r\n ret <3 x i32> %#23\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Target is more poisonous than source\r\n\r\nExample:\r\n<3 x i32> %#0 = < #x00000008 (8), #x00000000 (0), #x00000000 (0) >\r\n<3 x i32> %#1 = < #xfffffff9 (4294967289, -7), #x00000000 (0), #x00000000 (0) >\r\n\r\nSource:\r\ni32 %#3 = #x00000008 (8)\r\ni64 %#4 = #x0000000000000008 (8)\r\ni32 %#5 = #xfffffff9 (4294967289, -7)\r\ni64 %#6 = #x00000000fffffff9 (4294967289)\r\ni64 %#7 = #x0000000100000001 (4294967297)\r\ni32 %#21 = #x00000001 (1)\r\n<3 x i32> %#22 = < #x00000001 (1), #x00000000 (0), #x00000000 (0) >\r\n\r\nTarget:\r\n<2 x i32> %#3 = < #xfffffff9 (4294967289, -7), #x00000008 (8) >\r\ni32 %#4 = #xfffffff9 (4294967289, -7)\r\ni64 %#5 = #xfffffffffffffff9 (18446744073709551609, -7)\r\ni32 %#6 = #x00000008 (8)\r\ni64 %#7 = #x0000000000000008 (8)\r\ni64 %#8 = poison\r\ni32 %#22 = poison\r\n<3 x i32> %#23 = < poison, #x00000000 (0), #x00000000 (0) >\r\nSource value: < #x00000001 (1), #x00000000 (0), #x00000000 (0) >\r\nTarget value: < poison, #x00000000 (0), #x00000000 (0) >\r\n\r\nSummary:\r\n 0 correct transformations\r\n 1 incorrect transformations\r\n 0 failed-to-prove transformations\r\n 0 Alive2 errors\r\n```", "author": "bongjunj", "labels": [ "miscompilation", "llvm:SLPVectorizer" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "0c70a26f46e4efd5a29eb281ff99d2cf7f04c6f6", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 20147, 20153 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "tryToReduce" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/root-node-reordered-reused.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu < %s" ], "tests": [ { "test_name": "<module>", "test_body": "; ModuleID = 'test.ll'\nsource_filename = \"test.c\"\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine i32 @main(i32 %0) {\nentry:\n %tobool.not = icmp eq i32 %0, 0\n br i1 %tobool.not, label %if.end6, label %if.then\n\nif.then: ; preds = %entry\n br i1 %tobool.not, label %if.end, label %i\n\nif.end: ; preds = %if.then\n br i1 %tobool.not, label %if.end6, label %i\n\nif.end6: ; preds = %if.end, %entry\n %h.0 = phi i32 [ %0, %if.end ], [ 0, %entry ]\n br i1 %tobool.not, label %i, label %if.end13\n\ni: ; preds = %if.end13, %if.end6, %if.end, %if.then\n %h.1 = phi i32 [ %0, %if.then ], [ %h.2, %if.end13 ], [ %0, %if.end ], [ %h.0, %if.end6 ]\n %j.0 = phi i32 [ undef, %if.then ], [ %j.1, %if.end13 ], [ undef, %if.end ], [ %0, %if.end6 ]\n %k.0 = phi i32 [ undef, %if.then ], [ %k.1, %if.end13 ], [ undef, %if.end ], [ %0, %if.end6 ]\n %l.0 = phi i32 [ undef, %if.then ], [ %l.1, %if.end13 ], [ undef, %if.end ], [ %0, %if.end6 ]\n %or = or i32 %j.0, %h.1\n %or9 = or i32 %or, %k.0\n %or10 = or i32 %or9, %l.0\n %tobool11.not = icmp eq i32 %or10, 0\n br i1 %tobool11.not, label %if.end13, label %land.rhs\n\nland.rhs: ; preds = %i\n br label %if.end13\n\nif.end13: ; preds = %i, %land.rhs, %if.end6\n %h.2 = phi i32 [ %h.0, %if.end6 ], [ %h.1, %land.rhs ], [ %h.1, %i ]\n %j.1 = phi i32 [ %0, %if.end6 ], [ %j.0, %land.rhs ], [ %j.0, %i ]\n %k.1 = phi i32 [ %0, %if.end6 ], [ %k.0, %land.rhs ], [ %k.0, %i ]\n %l.1 = phi i32 [ %0, %if.end6 ], [ %l.0, %land.rhs ], [ %l.0, %i ]\n br i1 true, label %if.end15, label %i\n\nif.end15: ; preds = %if.end13\n ret i32 0\n\n; uselistorder directives\n uselistorder i32 %k.0, { 1, 2, 0 }\n uselistorder i32 %l.0, { 1, 2, 0 }\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "clang crashes on valid code at -O{s,2,3} on x86_64-linux-gnu: Assertion `TE->isSame(VL) && \"Expected same scalars.\"' failed", "body": "It appears to be a recent regression as it doesn't reproduce with 19.1.0 and earlier.\n\nCompiler Explorer: https://godbolt.org/z/6ca9841xE\n\n```\n[512] % clangtk -v\nclang version 21.0.0git (https://github.com/llvm/llvm-project.git 7612dcc6e8d8e7f19b364084effbb01946294720)\nTarget: x86_64-unknown-linux-gnu\nThread model: posix\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\nBuild config: +assertions\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\nCandidate multilib: .;@m64\nSelected multilib: .;@m64\n[513] % \n[513] % clangtk -O3 small.c\nclang-21: /local/suz-local/software/clangbuild/llvm-project/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:3011: llvm::slpvectorizer::BoUpSLP::TreeEntry* llvm::slpvectorizer::BoUpSLP::getVectorizedOperand(llvm::slpvectorizer::BoUpSLP::TreeEntry*, unsigned int): Assertion `TE->isSame(VL) && \"Expected same scalars.\"' failed.\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\nStack dump:\n0.\tProgram arguments: /local/suz-local/software/local/clang-trunk/bin/clang-21 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/20250201-clangtk-m64-O3-build-174536/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/20250201-clangtk-m64-O3-build-174536/delta -resource-dir /local/suz-local/software/local/clang-trunk/lib/clang/21 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/suz-local/software/local/clang-trunk/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-b035e7.o -x c small.c\n1.\t<eof> parser at end of file\n2.\tOptimizer\n3.\tRunning pass \"function<eager-inv>(float2int,lower-constant-intrinsics,chr,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-verify-fixpoint>,loop-unroll<O3>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"small.c\"\n4.\tRunning pass \"slp-vectorizer\" on function \"main\"\n #0 0x00005596296c84af llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x479d4af)\n #1 0x00005596296c5c84 SignalHandler(int) Signals.cpp:0:0\n #2 0x00007fe817057420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)\n #3 0x00007fe816a8e00b raise /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1\n #4 0x00007fe816a6d859 abort /build/glibc-LcI20x/glibc-2.31/stdlib/abort.c:81:7\n #5 0x00007fe816a6d729 get_sysdep_segment_value /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:509:8\n #6 0x00007fe816a6d729 _nl_load_domain /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:970:34\n #7 0x00007fe816a7efd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)\n #8 0x000055962b1df5c7 llvm::slpvectorizer::BoUpSLP::getSpillCost() (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x62b45c7)\n #9 0x000055962b243030 llvm::slpvectorizer::BoUpSLP::getTreeCost(llvm::ArrayRef<llvm::Value*>) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x6318030)\n#10 0x000055962b247f34 (anonymous namespace)::HorizontalReduction::tryToReduce(llvm::slpvectorizer::BoUpSLP&, llvm::DataLayout const&, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo const&, llvm::AssumptionCache*) SLPVectorizer.cpp:0:0\n#11 0x000055962b24a205 llvm::SLPVectorizerPass::vectorizeHorReduction(llvm::PHINode*, llvm::Instruction*, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&, llvm::SmallVectorImpl<llvm::WeakTrackingVH>&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x631f205)\n#12 0x000055962b24ee25 bool llvm::SLPVectorizerPass::vectorizeCmpInsts<std::reverse_iterator<llvm::CmpInst* const*>>(llvm::iterator_range<std::reverse_iterator<llvm::CmpInst* const*>>, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x6323e25)\n#13 0x000055962b24fedb llvm::SLPVectorizerPass::vectorizeChainsInBlock(llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&)::'lambda3'(bool)::operator()(bool) const SLPVectorizer.cpp:0:0\n#14 0x000055962b253720 llvm::SLPVectorizerPass::vectorizeChainsInBlock(llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x6328720)\n#15 0x000055962b259f46 llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0\n#16 0x000055962b25aaa3 llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x632faa3)\n#17 0x000055962ac7c7e6 llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x5d517e6)\n#18 0x000055962903ed49 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x4113d49)\n#19 0x000055962693a376 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x1a0f376)\n#20 0x000055962903d5b2 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x41125b2)\n#21 0x0000559626938aa6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x1a0daa6)\n#22 0x000055962903cfd1 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x4111fd1)\n#23 0x0000559629991596 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\n#24 0x0000559629995253 clang::emitBackendOutput(clang::CompilerInstance&, clang::CodeGenOptions&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x4a6a253)\n#25 0x000055962a09f2ce clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x51742ce)\n#26 0x000055962ba0f29c clang::ParseAST(clang::Sema&, bool, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x6ae429c)\n#27 0x000055962a09f708 clang::CodeGenAction::ExecuteAction() (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x5174708)\n#28 0x000055962a3719d9 clang::FrontendAction::Execute() (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x54469d9)\n#29 0x000055962a2f25be clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x53c75be)\n#30 0x000055962a466746 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x553b746)\n#31 0x00005596264d4a87 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x15a9a87)\n#32 0x00005596264cc33a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\n#33 0x00005596264d0471 clang_main(int, char**, llvm::ToolContext const&) (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x15a5471)\n#34 0x00005596263bb29b main (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x149029b)\n#35 0x00007fe816a6f083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3\n#36 0x00005596264cbdce _start (/local/suz-local/software/local/clang-trunk/bin/clang-21+0x15a0dce)\nclangtk: error: unable to execute command: Aborted\nclangtk: error: clang frontend command failed due to signal (use -v to see invocation)\nclang version 21.0.0git (https://github.com/llvm/llvm-project.git 7612dcc6e8d8e7f19b364084effbb01946294720)\nTarget: x86_64-unknown-linux-gnu\nThread model: posix\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\nBuild config: +assertions\nclangtk: note: diagnostic msg: \n********************\n\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\nPreprocessed source(s) and associated run script(s) are located at:\nclangtk: note: diagnostic msg: /tmp/small-401f68.c\nclangtk: note: diagnostic msg: /tmp/small-401f68.sh\nclangtk: note: diagnostic msg: \n\n********************\n[514] % \n[514] % cat small.c\nint a, b, c, d, e;\nvolatile int f;\nint main() {\n int h = 0, j, k, l;\n if (d) {\n h = c;\n if (f)\n goto i;\n if (f)\n goto i;\n }\n l = j = k = d;\n if (!b)\n i:\n (l | (h | j) | k) && f;\n if (a != e)\n goto i;\n return 0;\n}\n```\n\n\n", "author": "zhendongsu", "labels": [ "llvm:SLPVectorizer", "crash", "generated by fuzzer" ], "comments": [ { "author": "dtcxzyw", "body": "Reduced reproducer: https://godbolt.org/z/TWadzP8Gc\n" } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "3bf2295ee0ebd1eafe66ca15dff44bdb31e6198a", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": [ [ 3369, 3376 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": [ "InstCombinerImpl::foldAndOrOfICmps" ], "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/and-or-icmp-min-max.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "sge_and_max_commute", "test_body": "define i1 @sge_and_max_commute(i8 %x, i8 %y) {\n %cmp = icmp sge i8 %x, %y\n %cmpeq = icmp eq i8 %x, 127\n %r = and i1 %cmpeq, %cmp\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "sge_and_max_logical", "test_body": "define i1 @sge_and_max_logical(i8 %x, i8 %y) {\n %cmp = icmp sge i8 %x, %y\n %cmpeq = icmp eq i8 %x, 127\n %r = select i1 %cmp, i1 %cmpeq, i1 false\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "sge_and_max_logical_samesign", "test_body": "define i1 @sge_and_max_logical_samesign(i8 %x, i8 %y) {\n %cmp = icmp sge i8 %x, %y\n %cmpeq = icmp samesign eq i8 %x, 127\n %r = select i1 %cmp, i1 %cmpeq, i1 false\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/InstCombine/and-or-icmp-nullptr.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "sgt_and_min_logical_samesign", "test_body": "define i1 @sgt_and_min_logical_samesign(ptr %x, ptr %y) {\n %cmp = icmp sgt ptr %x, %y\n %cmpeq = icmp samesign eq ptr %x, null\n %r = select i1 %cmp, i1 %cmpeq, i1 false\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "sgt_and_min_logical", "test_body": "define i1 @sgt_and_min_logical(ptr %x, ptr %y) {\n %cmp = icmp sgt ptr %x, %y\n %cmpeq = icmp eq ptr %x, null\n %r = select i1 %cmp, i1 %cmpeq, i1 false\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "sle_or_not_min", "test_body": "define i1 @sle_or_not_min(ptr %x, ptr %y) {\n %cmp = icmp sle ptr %x, %y\n %cmpeq = icmp ne ptr %x, null\n %r = or i1 %cmp, %cmpeq\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] `samesign` flag should be dropped in `foldAndOrOfICmpsWithConstEq`", "body": "Reproducer:\r\n```\r\n; bin/opt -passes=instcombine test.ll -S\r\ndefine i1 @src(i8 %x, i8 %y) {\r\n %cmp = icmp sgt i8 %x, %y\r\n %cmpeq = icmp samesign ne i8 %x, 0\r\n %r = select i1 %cmp, i1 true, i1 %cmpeq\r\n ret i1 %r\r\n}\r\n```\r\n```\r\ndefine i1 @tgt(i8 %x, i8 %y) {\r\n %cmpeq = icmp samesign ne i8 %x, 0\r\n %1 = icmp slt i8 %y, 0\r\n %r = or i1 %cmpeq, %1\r\n ret i1 %r\r\n}\r\n```\r\n```\r\n----------------------------------------\r\ndefine i1 @src(i8 %x, i8 %y) {\r\n#0:\r\n %cmp = icmp sgt i8 %x, %y\r\n %cmpeq = icmp samesign ne i8 %x, 0\r\n %r = select i1 %cmp, i1 1, i1 %cmpeq\r\n ret i1 %r\r\n}\r\n=>\r\ndefine i1 @tgt(i8 %x, i8 %y) {\r\n#0:\r\n %cmpeq = icmp samesign ne i8 %x, 0\r\n %#1 = icmp slt i8 %y, 0\r\n %r = or i1 %cmpeq, %#1\r\n ret i1 %r\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Target is more poisonous than source\r\n\r\nExample:\r\ni8 %x = #x81 (129, -127)\r\ni8 %y = #x80 (128, -128)\r\n\r\nSource:\r\ni1 %cmp = #x1 (1)\r\ni1 %cmpeq = poison\r\ni1 %r = #x1 (1)\r\n\r\nTarget:\r\ni1 %cmpeq = poison\r\ni1 %#1 = #x1 (1)\r\ni1 %r = poison\r\nSource value: #x1 (1)\r\nTarget value: poison\r\n```\r\n", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "2dfb1c664c0a0afc512b900c45989e247406e523", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": [ [ 772, 777 ], [ 795, 801 ] ], "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": [ [ 36, 46 ] ], "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": [ "VPlanTransforms::adjustFixedOrderRecurrences", "sinkRecurrenceUsersAfterPrevious" ], "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/X86/fixed-order-recurrence.ll", "commands": [ "opt -passes=loop-vectorize -S -o - %s" ], "tests": [ { "test_name": "test_pr62954_scalar_epilogue_required", "test_body": "target datalayout = \"e-m:e-i64:64-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-pc_linux\"\n\ndefine i64 @test_pr62954_scalar_epilogue_required(ptr %A, ptr noalias %B, ptr %C) {\nentry:\n %gep = getelementptr i8, ptr %A, i64 872\n %rec.start = load i64, ptr %gep, align 8\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 1, %entry ], [ %iv.next, %loop ]\n %for = phi i64 [ %rec.start, %entry ], [ %neg.iv, %loop ]\n %gep.B = getelementptr double, ptr %B, i64 %iv\n %l.B = load double, ptr %gep.B, align 8\n %neg.iv = sub nsw i64 0, %iv\n store i64 %neg.iv, ptr %gep, align 8\n %iv.next = add nuw nsw i64 %iv, 2\n %ec = icmp ugt i64 %iv, 74\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n %.in.lcssa = phi i64 [ %for, %loop ]\n %.lcssa = phi double [ %l.B, %loop ]\n store double %.lcssa, ptr %C, align 8\n ret i64 %.in.lcssa\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "thirdorderrec", "test_body": "target datalayout = \"e-m:e-i64:64-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-pc_linux\"\n\ndefine void @thirdorderrec(ptr nocapture noundef readonly %x, ptr noalias nocapture noundef writeonly %y, i32 noundef %n) {\nentry:\n %cmp38 = icmp sgt i32 %n, 3\n br i1 %cmp38, label %for.body.preheader, label %for.cond.cleanup\n\nfor.body.preheader: ; preds = %entry\n %wide.trip.count = zext i32 %n to i64\n %.pre = load i8, ptr %x, align 1\n %arrayidx5.phi.trans.insert = getelementptr inbounds i8, ptr %x, i64 1\n %.pre44 = load i8, ptr %arrayidx5.phi.trans.insert, align 1\n %arrayidx12.phi.trans.insert = getelementptr inbounds i8, ptr %x, i64 2\n %.pre45 = load i8, ptr %arrayidx12.phi.trans.insert, align 1\n br label %for.body\n\nfor.cond.cleanup: ; preds = %for.body, %entry\n ret void\n\nfor.body: ; preds = %for.body, %for.body.preheader\n %0 = phi i8 [ %.pre45, %for.body.preheader ], [ %3, %for.body ]\n %1 = phi i8 [ %.pre44, %for.body.preheader ], [ %0, %for.body ]\n %2 = phi i8 [ %.pre, %for.body.preheader ], [ %1, %for.body ]\n %indvars.iv = phi i64 [ 3, %for.body.preheader ], [ %indvars.iv.next, %for.body ]\n %add8 = add i8 %1, %2\n %add15 = add i8 %add8, %0\n %arrayidx18 = getelementptr inbounds i8, ptr %x, i64 %indvars.iv\n %3 = load i8, ptr %arrayidx18, align 1\n %add21 = add i8 %add15, %3\n %arrayidx24 = getelementptr inbounds i8, ptr %y, i64 %indvars.iv\n store i8 %add21, ptr %arrayidx24, align 1\n %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1\n %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count\n br i1 %exitcond.not, label %for.cond.cleanup, label %for.body\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "for_iv_trunc_optimized", "test_body": "target datalayout = \"e-m:e-i64:64-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-pc_linux\"\n\ndefine void @for_iv_trunc_optimized(ptr %dst) {\nbb:\n br label %loop\n\nloop: ; preds = %loop, %bb\n %iv = phi i64 [ 1, %bb ], [ %add, %loop ]\n %for.1 = phi i32 [ 1, %bb ], [ %trunc, %loop ]\n %for.2 = phi i32 [ 0, %bb ], [ %or, %loop ]\n %or = or i32 %for.1, 3\n %add = add i64 %iv, 1\n store i32 %for.2, ptr %dst, align 4\n %icmp = icmp ult i64 %iv, 337\n %trunc = trunc i64 %iv to i32\n br i1 %icmp, label %loop, label %exit\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "firstorderrec", "test_body": "target datalayout = \"e-m:e-i64:64-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-pc_linux\"\n\ndefine void @firstorderrec(ptr nocapture noundef readonly %x, ptr noalias nocapture noundef writeonly %y, i32 noundef %n) {\nentry:\n %cmp18 = icmp sgt i32 %n, 1\n br i1 %cmp18, label %for.body.preheader, label %for.cond.cleanup\n\nfor.body.preheader: ; preds = %entry\n %wide.trip.count = zext i32 %n to i64\n %.pre = load i8, ptr %x, align 1\n br label %for.body\n\nfor.cond.cleanup: ; preds = %for.body, %entry\n ret void\n\nfor.body: ; preds = %for.body, %for.body.preheader\n %0 = phi i8 [ %.pre, %for.body.preheader ], [ %1, %for.body ]\n %indvars.iv = phi i64 [ 1, %for.body.preheader ], [ %indvars.iv.next, %for.body ]\n %arrayidx4 = getelementptr inbounds i8, ptr %x, i64 %indvars.iv\n %1 = load i8, ptr %arrayidx4, align 1\n %add7 = add i8 %1, %0\n %arrayidx10 = getelementptr inbounds i8, ptr %y, i64 %indvars.iv\n store i8 %add7, ptr %arrayidx10, align 1\n %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1\n %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count\n br i1 %exitcond.not, label %for.cond.cleanup, label %for.body\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/first-order-recurrence-chains-vplan.ll", "commands": [ "opt -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -debug-only=loop-vectorize -disable-output -S %s 2>&1" ], "tests": [ { "test_name": "test_chained_first_order_recurrences_4", "test_body": "define i32 @test_chained_first_order_recurrences_4(ptr %base, i64 %x) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ %iv.next, %loop ], [ 0, %entry ]\n %for.x = phi i64 [ %for.x.next, %loop ], [ 0, %entry ]\n %for.y = phi i32 [ %for.x.prev, %loop ], [ 0, %entry ]\n %iv.next = add i64 %iv, 1\n %gep = getelementptr i64, ptr %base, i64 %iv\n %for.x.prev = trunc i64 %for.x to i32\n %for.y.i64 = sext i32 %for.y to i64\n store i64 %for.y.i64, ptr %gep, align 4\n %for.x.next = mul i64 %x, 2\n %icmp = icmp ugt i64 %iv, 4096\n br i1 %icmp, label %ret, label %loop\n\nret: ; preds = %loop\n ret i32 0\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_chained_first_order_recurrences_3", "test_body": "define void @test_chained_first_order_recurrences_3(ptr %ptr) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %for.1 = phi i16 [ 22, %entry ], [ %for.1.next, %loop ]\n %for.2 = phi i16 [ 33, %entry ], [ %for.1, %loop ]\n %for.3 = phi i16 [ 33, %entry ], [ %for.2, %loop ]\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %iv.next = add nuw nsw i64 %iv, 1\n %gep.ptr = getelementptr inbounds i16, ptr %ptr, i64 %iv\n %for.1.next = load i16, ptr %gep.ptr, align 2\n %add.1 = add i16 %for.1, %for.2\n %add.2 = add i16 %add.1, %for.3\n store i16 %add.2, ptr %gep.ptr, align 2\n %exitcond.not = icmp eq i64 %iv.next, 1000\n br i1 %exitcond.not, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_chained_first_order_recurrences_1", "test_body": "define void @test_chained_first_order_recurrences_1(ptr %ptr) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %for.1 = phi i16 [ 22, %entry ], [ %for.1.next, %loop ]\n %for.2 = phi i16 [ 33, %entry ], [ %for.1, %loop ]\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %iv.next = add nuw nsw i64 %iv, 1\n %gep.ptr = getelementptr inbounds i16, ptr %ptr, i64 %iv\n %for.1.next = load i16, ptr %gep.ptr, align 2\n %add = add i16 %for.1, %for.2\n store i16 %add, ptr %gep.ptr, align 2\n %exitcond.not = icmp eq i64 %iv.next, 1000\n br i1 %exitcond.not, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_chained_first_order_recurrences_5_hoist_to_load", "test_body": "define i32 @test_chained_first_order_recurrences_5_hoist_to_load(ptr %base) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ %iv.next, %loop ], [ 0, %entry ]\n %for.x = phi i64 [ %for.x.next, %loop ], [ 0, %entry ]\n %for.y = phi i32 [ %for.x.prev, %loop ], [ 0, %entry ]\n %iv.next = add i64 %iv, 1\n %gep = getelementptr i64, ptr %base, i64 %iv\n %l = load i64, ptr %gep, align 4\n %for.x.prev = trunc i64 %for.x to i32\n %for.y.i64 = sext i32 %for.y to i64\n store i64 %for.y.i64, ptr %gep, align 4\n %for.x.next = mul i64 %l, 2\n %icmp = icmp ugt i64 %iv, 4096\n br i1 %icmp, label %ret, label %loop\n\nret: ; preds = %loop\n ret i32 0\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/first-order-recurrence-multiply-recurrences.ll", "commands": [], "tests": [ { "test_name": "test_pr54223_sink_after_insertion_order", "test_body": "define void @test_pr54223_sink_after_insertion_order(ptr noalias %a, ptr noalias %b, ptr noalias %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %for.1 = phi float [ 0.000000e+00, %entry ], [ %for.1.next, %loop ]\n %for.2 = phi float [ 0.000000e+00, %entry ], [ %for.2.next, %loop ]\n %neg = fneg float %for.2\n %muladd = call float @llvm.fmuladd.f32(float %for.1, float %neg, float 0.000000e+00)\n %dst.gep = getelementptr inbounds float, ptr %dst, i64 %iv\n %iv.next = add nuw nsw i64 %iv, 1\n %for.1.next = load float, ptr %a, align 4\n %for.2.next = load float, ptr %b, align 4\n store float %muladd, ptr %dst.gep, align 4\n %exitcond.not = icmp eq i64 %iv.next, 10000\n br i1 %exitcond.not, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare float @llvm.fmuladd.f32(float, float, float) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_pr54233_for_depend_on_each_other", "test_body": "define void @test_pr54233_for_depend_on_each_other(ptr noalias %a, ptr noalias %b) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %for.1 = phi i32 [ 0, %entry ], [ %for.1.next, %loop ]\n %for.2 = phi i32 [ 0, %entry ], [ %for.2.next, %loop ]\n %or = or i32 %for.2, 10\n %shl = shl i32 %for.2, %for.1\n %xor = xor i32 %shl, 255\n %and = and i32 %xor, %or\n %for.1.next = xor i32 12, %for.2\n %for.2.next = load i32, ptr %b, align 4\n %a.gep = getelementptr inbounds i32, ptr %a, i64 %iv\n store i32 %and, ptr %a.gep, align 4\n %iv.next = add nuw i64 %iv, 1\n %exitcond = icmp eq i64 %iv, 1000\n br i1 %exitcond, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Assertion `hasPlanWithVF(ScalarVF) && \"More than a single plan/VF w/o any plan having scalar VF\"' failed.", "body": "To reproduce run the following test with -passes=loop-vectorize\r\n```\r\n; ModuleID = './reduced.ll'\r\nsource_filename = \"./reduced.ll\"\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine void @wombat() gc \"statepoint-example\" {\r\nbb:\r\n br label %bb1\r\n\r\nbb1: ; preds = %bb1, %bb\r\n %phi = phi i64 [ %add, %bb1 ], [ 1, %bb ]\r\n %phi2 = phi i32 [ %trunc, %bb1 ], [ 1, %bb ]\r\n %phi3 = phi i32 [ %or, %bb1 ], [ 0, %bb ]\r\n %or = or i32 %phi2, 0\r\n %add = add i64 %phi, 1\r\n store i32 %phi3, ptr addrspace(1) null, align 4\r\n %icmp = icmp ult i64 %phi, 337\r\n %trunc = trunc i64 %phi to i32\r\n br i1 %icmp, label %bb1, label %bb4\r\n\r\nbb4: ; preds = %bb1\r\n ret void\r\n}\r\n```\r\n\r\nReproducer: https://godbolt.org/z/e14eWvxMb\r\n\r\nStack dump:\r\n```\r\nopt: /root/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7304: llvm::VectorizationFactor llvm::LoopVectorizationPlanner::computeBestVF(): Assertion `hasPlanWithVF(ScalarVF) && \"More than a single plan/VF w/o any plan having scalar VF\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=loop-vectorize <source>\r\n1.\tRunning pass \"function(loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>)\" on module \"<source>\"\r\n2.\tRunning pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"wombat\"\r\n #0 0x0000000004fa4138 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4fa4138)\r\n #1 0x0000000004fa18ac SignalHandler(int) Signals.cpp:0:0\r\n #2 0x000073e073a42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x000073e073a969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x000073e073a42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x000073e073a287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x000073e073a2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\r\n #7 0x000073e073a39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n #8 0x0000000003fe5276 llvm::LoopVectorizationPlanner::computeBestVF() (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3fe5276)\r\n #9 0x0000000004001214 llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4001214)\r\n#10 0x0000000004003eb9 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4003eb9)\r\n#11 0x0000000004004543 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4004543)\r\n#12 0x0000000002ec85ae llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2ec85ae)\r\n#13 0x0000000004da08f8 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4da08f8)\r\n#14 0x0000000000df11be llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xdf11be)\r\n#15 0x0000000004d9f2fe llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4d9f2fe)\r\n#16 0x0000000000df0aae llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xdf0aae)\r\n#17 0x0000000004d9d490 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4d9d490)\r\n#18 0x00000000008e8002 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8e8002)\r\n#19 0x00000000008daedc optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8daedc)\r\n#20 0x000073e073a29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#21 0x000073e073a29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#22 0x00000000008d296e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8d296e)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139", "author": "TatyanaDoubts", "labels": [ "vectorizers", "crash-on-valid" ], "comments": [ { "author": "fhahn", "body": "Very interesting issue thanks! Proposed fix https://github.com/llvm/llvm-project/issues/106523" } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "adb0126ef11b0083d5a78be1534ccefa53def1cf", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": [ [ 35, 40 ], [ 44, 49 ] ], "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": [ "VPTypeAnalysis::inferScalarTypeForRecipe" ], "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/vplan-infer-not-or-type.ll", "commands": [ "opt < %s -passes=loop-vectorize -S" ], "tests": [ { "test_name": "foo", "test_body": "define void @foo(i8 %arg.0, i8 %arg.1) {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %latch, %entry\n %incrementor = phi i8 [ %add, %latch ], [ 0, %entry ]\n %and = and i8 %arg.0, %arg.1\n %extract.t = trunc i8 %and to i1\n br i1 %extract.t, label %latch, label %indirect.latch\n\nindirect.latch: ; preds = %loop.header\n br label %latch\n\nlatch: ; preds = %indirect.latch, %loop.header\n %add = add i8 %incrementor, 1\n %conv = zext i8 %incrementor to i32\n %cmp = icmp ult i32 %conv, 1\n br i1 %cmp, label %loop.header, label %loop.exit\n\nloop.exit: ; preds = %latch\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[LoopVectorize][VPlan] Unreachable executed \"Unhandled opcode!\"", "body": "Reduced LLVM IR:\r\n```llvm ir\r\ntarget datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\r\ntarget triple = \"riscv64-unknown-linux-gnu\"\r\n\r\ndefine i32 @main() #0 {\r\nentry:\r\n br label %for.body\r\n\r\nfor.cond.cleanup.loopexit: ; preds = %cond.end\r\n ret i32 0\r\n\r\nfor.body: ; preds = %cond.end, %entry\r\n %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %cond.end ]\r\n %conv3 = zext i1 false to i64\r\n %conv4 = trunc i64 %conv3 to i16\r\n br i1 false, label %cond.false, label %cond.end\r\n\r\ncond.false: ; preds = %for.body\r\n br label %cond.end\r\n\r\ncond.end: ; preds = %cond.false, %for.body\r\n %indvars.iv.next = add i64 %indvars.iv, 1\r\n %cmp = icmp ult i64 %indvars.iv, 1\r\n br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit\r\n}\r\n\r\nattributes #0 = { \"target-features\"=\"+64bit,+v\" }\r\n```\r\n\r\nBacktrace:\r\n```\r\nUnhandled opcode!\r\nUNREACHABLE executed at /scratch/tc-testing/tc-apr-2/llvm/llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp:58!\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0. Program arguments: /scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt --passes=loop-vectorize reduced.ll\r\n #0 0x00005f05c836eb60 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2d84b60)\r\n #1 0x00005f05c836bf6f llvm::sys::RunSignalHandlers() (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2d81f6f)\r\n #2 0x00005f05c836c0c5 SignalHandler(int) Signals.cpp:0:0\r\n #3 0x000071a702442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #4 0x000071a7024969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76\r\n #5 0x000071a7024969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10\r\n #6 0x000071a7024969fc pthread_kill ./nptl/pthread_kill.c:89:10\r\n #7 0x000071a702442476 gsignal ./signal/../sysdeps/posix/raise.c:27:6\r\n #8 0x000071a7024287f3 abort ./stdlib/abort.c:81:7\r\n #9 0x00005f05c82a2afe (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2cb8afe)\r\n#10 0x00005f05c74dfe67 llvm::VPTypeAnalysis::inferScalarTypeForRecipe(llvm::VPInstruction const*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1ef5e67)\r\n#11 0x00005f05c74dc88c llvm::VPTypeAnalysis::inferScalarType(llvm::VPValue const*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1ef288c)\r\n#12 0x00005f05c750790e simplifyRecipes(llvm::VPlan&, llvm::LLVMContext&) VPlanTransforms.cpp:0:0\r\n#13 0x00005f05c750e606 llvm::VPlanTransforms::optimize(llvm::VPlan&, llvm::ScalarEvolution&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1f24606)\r\n#14 0x00005f05c73ded66 llvm::LoopVectorizationPlanner::buildVPlansWithVPRecipes(llvm::ElementCount, llvm::ElementCount) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1df4d66)\r\n#15 0x00005f05c73e5319 llvm::LoopVectorizationPlanner::plan(llvm::ElementCount, unsigned int) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1dfb319)\r\n#16 0x00005f05c73e88a9 llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1dfe8a9)\r\n#17 0x00005f05c73eb73e llvm::LoopVectorizePass::runImpl(llvm::Function&, llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo*, llvm::TargetLibraryInfo*, llvm::DemandedBits&, llvm::AssumptionCache&, llvm::LoopAccessInfoManager&, llvm::OptimizationRemarkEmitter&, llvm::ProfileSummaryInfo*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1e0173e)\r\n#18 0x00005f05c73ec88d llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1e0288d)\r\n#19 0x00005f05c62f3276 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0xd09276)\r\n#20 0x00005f05c8195141 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2bab141)\r\n#21 0x00005f05c62eabd6 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0xd00bd6)\r\n#22 0x00005f05c8193e3b llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2ba9e3b)\r\n#23 0x00005f05c62f2dc6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0xd08dc6)\r\n#24 0x00005f05c8191cb1 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2ba7cb1)\r\n#25 0x00005f05c5b6cce5 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x582ce5)\r\n#26 0x00005f05c5b5f316 optMain (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x575316)\r\n#27 0x000071a702429d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16\r\n#28 0x000071a702429e40 call_init ./csu/../csu/libc-start.c:128:20\r\n#29 0x000071a702429e40 __libc_start_main ./csu/../csu/libc-start.c:379:5\r\n#30 0x00005f05c5b54f95 _start (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x56af95)\r\nzsh: IOT instruction (core dumped) /scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt\r\n```\r\nGodbolt: https://godbolt.org/z/bvY138WfG\r\n\r\nTriggered assertion: https://github.com/llvm/llvm-project/blob/f5991161529511ca6ebc058da2a0507c2fc5283e/llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp#L58\r\n\r\nFound via fuzzer", "author": "patrick-rivos", "labels": [ "vectorizers", "crash" ], "comments": [] }

[ "llvm/test/Transforms/LoopStrengthReduce" ]

{ "fix_commit": "7506872afc6c1cc7556eed5128a2030b6eb8ca29", "components": [ "LoopStrengthReduce" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": [ [ 6870, 6875 ] ], "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": [ "SalvageDVI" ], "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopStrengthReduce/debuginfo-scev-salvage-large-width.ll", "commands": [ "opt -S -loop-reduce %s" ], "tests": [ { "test_name": "main", "test_body": "define i16 @main() {\nentry:\n br label %for.cond29\n\nfor.cond29: ; preds = %for.body32, %entry\n %il_1000.0 = phi i128 [ 0, %entry ], [ %inc72, %for.body32 ]\n %l_995.0 = phi i128 [ 4704496199548239085565, %entry ], [ %inc70, %for.body32 ]\n #dbg_value(i128 %l_995.0, !4, !DIExpression(), !9)\n %cmp30 = icmp slt i128 %il_1000.0, 0\n br i1 %cmp30, label %for.body32, label %for.cond.cleanup31\n\nfor.cond.cleanup31: ; preds = %for.cond29\n ret i16 0\n\nfor.body32: ; preds = %for.cond29\n %inc70 = add i128 %l_995.0, 1\n %inc72 = add i128 %il_1000.0, 1\n br label %for.cond29\n}\n\n!llvm.dbg.cu = !{!0}\n!llvm.module.flags = !{!3}\n\n!0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: \"clang\", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, retainedTypes: !2, globals: !2, splitDebugInlining: false, nameTableKind: None)\n!1 = !DIFile(filename: \"foo.c\", directory: \"/tmp\")\n!2 = !{}\n!3 = !{i32 2, !\"Debug Info Version\", i32 3}\n!4 = !DILocalVariable(name: \"l_995\", scope: !5, file: !1, line: 414, type: !7)\n!5 = distinct !DISubprogram(name: \"main\", scope: !1, file: !1, line: 397, type: !6, scopeLine: 398, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)\n!6 = !DISubroutineType(types: !2)\n!7 = !DIDerivedType(tag: DW_TAG_typedef, name: \"__uint128_t\", file: !1, baseType: !8)\n!8 = !DIBasicType(name: \"unsigned __int128\", size: 128, encoding: DW_ATE_unsigned)\n!9 = !DILocation(line: 0, scope: !5)\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "llc: ../lib/Transforms/Scalar/LoopStrengthReduce.cpp:6630: [...] Assertion `!LocationOps.empty() && \"Expected the location ops to contain the IV.\"' failed.", "body": "llvm commit: 82e594a022d\r\nReproduce with: ```llc bbi-99605.ll -o /dev/null```\r\nResult:\r\n```\r\nllc: ../lib/Transforms/Scalar/LoopStrengthReduce.cpp:6630: void (anonymous namespace)::SCEVDbgValueBuilder::appendToVectors(SmallVectorImpl<uint64_t> &, SmallVectorImpl<llvm::Value *> &): Assertion `!LocationOps.empty() && \"Expected the location ops to contain the IV.\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: build-all/bin/llc bbi-99605.ll -o /dev/null\r\n1.\tRunning pass 'Function Pass Manager' on module 'bbi-99605.ll'.\r\n2.\tRunning pass 'Loop Pass Manager' on function '@main'\r\n3.\tRunning pass 'Loop Strength Reduction' on basic block '%for.cond29'\r\n #0 0x000055e150599557 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (build-all/bin/llc+0x6dee557)\r\n #1 0x000055e1505970be llvm::sys::RunSignalHandlers() (build-all/bin/llc+0x6dec0be)\r\n #2 0x000055e150599bff SignalHandler(int) Signals.cpp:0:0\r\n #3 0x00007f66b410bcf0 __restore_rt (/lib64/libpthread.so.0+0x12cf0)\r\n #4 0x00007f66b1cc4acf raise (/lib64/libc.so.6+0x4eacf)\r\n #5 0x00007f66b1c97ea5 abort (/lib64/libc.so.6+0x21ea5)\r\n #6 0x00007f66b1c97d79 _nl_load_domain.cold.0 (/lib64/libc.so.6+0x21d79)\r\n #7 0x00007f66b1cbd426 (/lib64/libc.so.6+0x47426)\r\n #8 0x000055e15005db21 (build-all/bin/llc+0x68b2b21)\r\n #9 0x000055e15005c0c3 SalvageDVI(llvm::Loop*, llvm::ScalarEvolution&, llvm::PHINode*, (anonymous namespace)::DVIRecoveryRec&, llvm::SCEV const*, (anonymous namespace)::SCEVDbgValueBuilder) LoopStrengthReduce.cpp:0:0\r\n#10 0x000055e15002dca8 ReduceLoopStrength(llvm::Loop*, llvm::IVUsers&, llvm::ScalarEvolution&, llvm::DominatorTree&, llvm::LoopInfo&, llvm::TargetTransformInfo const&, llvm::AssumptionCache&, llvm::TargetLibraryInfo&, llvm::MemorySSA*) LoopStrengthReduce.cpp:0:0\r\n#11 0x000055e15005e7e8 (anonymous namespace)::LoopStrengthReduce::runOnLoop(llvm::Loop*, llvm::LPPassManager&) LoopStrengthReduce.cpp:0:0\r\n#12 0x000055e14f26f0f9 llvm::LPPassManager::runOnFunction(llvm::Function&) (build-all/bin/llc+0x5ac40f9)\r\n#13 0x000055e14fba9e38 llvm::FPPassManager::runOnFunction(llvm::Function&) (build-all/bin/llc+0x63fee38)\r\n#14 0x000055e14fbb2171 llvm::FPPassManager::runOnModule(llvm::Module&) (build-all/bin/llc+0x6407171)\r\n#15 0x000055e14fbaa8b5 llvm::legacy::PassManagerImpl::run(llvm::Module&) (build-all/bin/llc+0x63ff8b5)\r\n#16 0x000055e14d988be8 compileModule(char**, llvm::LLVMContext&) llc.cpp:0:0\r\n#17 0x000055e14d98626d main (build-all/bin/llc+0x41db26d)\r\n#18 0x00007f66b1cb0d85 __libc_start_main (/lib64/libc.so.6+0x3ad85)\r\n#19 0x000055e14d9822ee _start (build-all/bin/llc+0x41d72ee)\r\nAbort (core dumped)\r\n```\r\nThe input contains the new debug info:\r\n```#dbg_value(i128 %l_995.0, !4, !DIExpression(), !9)```\r\n\r\n[bbi-99605.ll.gz](https://github.com/user-attachments/files/17189125/bbi-99605.ll.gz)\r\n", "author": "mikaelholmen", "labels": [ "debuginfo", "crash", "llvm:transforms" ], "comments": [ { "author": "OCHyams", "body": "Thanks for the small reproducer. That is fixed in #110979 - this PR just avoids us crash/asserting when a salvage attempt is made with an offset over 64 bits wide and poisons the dbg record instead. I didn't look into whether we could theoretically or practically salvage it.\r\n\r\nn.b., this case was broken with debug intrinsics too, not just the new debug record format." } ] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "092d6283838dea79670750b9415955c5f0cb5178", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 8091, 8096 ], [ 17818, 17824 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::buildTree_rec", "BoUpSLP::collectValuesToDemote" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/div-possibly-extended-with-poisons.ll", "commands": [ "opt -S -O2 < %s" ], "tests": [ { "test_name": "<module>", "test_body": "target datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\n@g_3 = internal unnamed_addr global i64 0\n@g_127 = external local_unnamed_addr global [3 x i32]\n@g_211 = external local_unnamed_addr global i32\n\ndefine i8 @func_125() {\nentry:\n %call42 = call ptr @func_178()\n ret i8 0\n}\n\ndefine ptr @func_178() {\nentry:\n %0 = load i32, ptr @g_211, align 4\n %tobool158.not = icmp eq i32 %0, 0\n br i1 %tobool158.not, label %for.inc434, label %for.cond166.preheader\n\nfor.cond166.preheader: ; preds = %entry\n br label %for.cond166\n\nfor.cond166: ; preds = %for.cond166.preheader, %for.cond166\n %1 = phi i64 [ %2, %for.cond166 ], [ poison, %for.cond166.preheader ]\n %2 = phi i64 [ %inc255, %for.cond166 ], [ 0, %for.cond166.preheader ]\n %cmp167 = icmp samesign ult i64 %2, 61\n %inc255 = add nuw nsw i64 %2, 1\n br i1 %cmp167, label %for.cond166, label %for.inc434.loopexit\n\nfor.inc434.loopexit: ; preds = %for.cond166\n %.lcssa = phi i64 [ %1, %for.cond166 ]\n store i64 %.lcssa, ptr @g_3, align 8\n br label %for.inc434\n\nfor.inc434: ; preds = %for.inc434.loopexit, %entry\n store i32 1, ptr @g_211, align 4\n %3 = load i64, ptr @g_3, align 8\n %conv.i = trunc nuw nsw i64 %3 to i32\n %4 = load i32, ptr @g_127, align 4\n %and.i = and i32 %4, %conv.i\n %cmp.i = icmp eq i32 %and.i, 0\n %conv8.i = sext i32 %and.i to i64\n %sext = shl i64 %3, 32\n %conv9.i = ashr exact i64 %sext, 32\n %g_211.promoted5 = load i32, ptr @g_211, align 4\n br label %for.body447\n\nfor.body447: ; preds = %for.inc434, %cleanup552\n %p_181.addr.08 = phi i64 [ -13, %for.inc434 ], [ %conv564, %cleanup552 ]\n %and14.i1.lcssa67 = phi i32 [ %g_211.promoted5, %for.inc434 ], [ %and14.i.lcssa, %cleanup552 ]\n br label %if.then489\n\nif.then489: ; preds = %for.body447, %safe_div_func_int64_t_s_s.exit\n %l_317.03 = phi i32 [ 2, %for.body447 ], [ %sub, %safe_div_func_int64_t_s_s.exit ]\n %and14.i12 = phi i32 [ %and14.i1.lcssa67, %for.body447 ], [ %and14.i, %safe_div_func_int64_t_s_s.exit ]\n br i1 %cmp.i, label %safe_div_func_int64_t_s_s.exit, label %lor.lhs.false.i\n\nlor.lhs.false.i: ; preds = %if.then489\n %div.i = sdiv i64 %conv8.i, %conv9.i\n %5 = trunc i64 %div.i to i16\n br label %safe_div_func_int64_t_s_s.exit\n\nsafe_div_func_int64_t_s_s.exit: ; preds = %lor.lhs.false.i, %if.then489\n %cond.i = phi i16 [ %5, %lor.lhs.false.i ], [ 0, %if.then489 ]\n %call12.i = tail call i16 @llvm.bswap.i16(i16 %cond.i)\n %conv13.i = zext i16 %call12.i to i32\n %and14.i = and i32 %and14.i12, %conv13.i\n %call26.i = load volatile ptr, ptr null, align 8\n %sub = add nsw i32 %l_317.03, -1\n %cmp482 = icmp sgt i32 %l_317.03, 0\n br i1 %cmp482, label %if.then489, label %cleanup552\n\ncleanup552: ; preds = %safe_div_func_int64_t_s_s.exit\n %and14.i.lcssa = phi i32 [ %and14.i, %safe_div_func_int64_t_s_s.exit ]\n %add.i = add nsw i64 %p_181.addr.08, 7\n %conv564 = and i64 %add.i, 255\n %6 = and i64 %p_181.addr.08, 255\n %cmp445.not = icmp eq i64 %6, 22\n br i1 %cmp445.not, label %for.end565, label %for.body447\n\nfor.end565: ; preds = %cleanup552\n %and14.i.lcssa.lcssa = phi i32 [ %and14.i.lcssa, %cleanup552 ]\n store i32 %conv.i, ptr getelementptr inbounds nuw (i8, ptr @g_127, i64 8), align 4\n store i32 %and14.i.lcssa.lcssa, ptr @g_211, align 4\n ret ptr null\n}\n\ndefine ptr @func_183(i64 %p_185) {\nentry:\n %call = call i64 @builtin_uaddl_overflow(i64 %p_185, i64 0)\n unreachable\n}\n\ndefine i64 @builtin_uaddl_overflow(i64 %x, i64 %y) {\nentry:\n %0 = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %x, i64 %y)\n %1 = extractvalue { i64, i1 } %0, 1\n %conv = zext i1 %1 to i64\n ret i64 %conv\n}", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLPVectorizer] Assertion `isa<To>(Val) && \"cast<Ty>() argument of incompatible type!\"' failed.", "body": "Reproducer: https://godbolt.org/z/68MKbnE4W\n```\n; bin/opt -O2 reduced.ll -S\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\n@g_3 = internal unnamed_addr global i64 0\n@g_127 = external local_unnamed_addr global [3 x i32]\n@g_211 = external local_unnamed_addr global i32\n\ndefine i8 @func_125() {\nentry:\n %call42 = call ptr @func_178()\n ret i8 0\n}\n\ndefine ptr @func_178() {\nentry:\n %0 = load i32, ptr @g_211, align 4\n %tobool158.not = icmp eq i32 %0, 0\n br i1 %tobool158.not, label %for.inc434, label %for.cond166.preheader\n\nfor.cond166.preheader: ; preds = %entry\n br label %for.cond166\n\nfor.cond166: ; preds = %for.cond166.preheader, %for.cond166\n %1 = phi i64 [ %2, %for.cond166 ], [ poison, %for.cond166.preheader ]\n %2 = phi i64 [ %inc255, %for.cond166 ], [ 0, %for.cond166.preheader ]\n %cmp167 = icmp samesign ult i64 %2, 61\n %inc255 = add nuw nsw i64 %2, 1\n br i1 %cmp167, label %for.cond166, label %for.inc434.loopexit\n\nfor.inc434.loopexit: ; preds = %for.cond166\n %.lcssa = phi i64 [ %1, %for.cond166 ]\n store i64 %.lcssa, ptr @g_3, align 8\n br label %for.inc434\n\nfor.inc434: ; preds = %for.inc434.loopexit, %entry\n store i32 1, ptr @g_211, align 4\n %3 = load i64, ptr @g_3, align 8\n %conv.i = trunc nuw nsw i64 %3 to i32\n %4 = load i32, ptr @g_127, align 4\n %and.i = and i32 %4, %conv.i\n %cmp.i = icmp eq i32 %and.i, 0\n %conv8.i = sext i32 %and.i to i64\n %sext = shl i64 %3, 32\n %conv9.i = ashr exact i64 %sext, 32\n %g_211.promoted5 = load i32, ptr @g_211, align 4\n br label %for.body447\n\nfor.body447: ; preds = %for.inc434, %cleanup552\n %p_181.addr.08 = phi i64 [ -13, %for.inc434 ], [ %conv564, %cleanup552 ]\n %and14.i1.lcssa67 = phi i32 [ %g_211.promoted5, %for.inc434 ], [ %and14.i.lcssa, %cleanup552 ]\n br label %if.then489\n\nif.then489: ; preds = %for.body447, %safe_div_func_int64_t_s_s.exit\n %l_317.03 = phi i32 [ 2, %for.body447 ], [ %sub, %safe_div_func_int64_t_s_s.exit ]\n %and14.i12 = phi i32 [ %and14.i1.lcssa67, %for.body447 ], [ %and14.i, %safe_div_func_int64_t_s_s.exit ]\n br i1 %cmp.i, label %safe_div_func_int64_t_s_s.exit, label %lor.lhs.false.i\n\nlor.lhs.false.i: ; preds = %if.then489\n %div.i = sdiv i64 %conv8.i, %conv9.i\n %5 = trunc i64 %div.i to i16\n br label %safe_div_func_int64_t_s_s.exit\n\nsafe_div_func_int64_t_s_s.exit: ; preds = %lor.lhs.false.i, %if.then489\n %cond.i = phi i16 [ %5, %lor.lhs.false.i ], [ 0, %if.then489 ]\n %call12.i = tail call i16 @llvm.bswap.i16(i16 %cond.i)\n %conv13.i = zext i16 %call12.i to i32\n %and14.i = and i32 %and14.i12, %conv13.i\n %call26.i = load volatile ptr, ptr null, align 8\n %sub = add nsw i32 %l_317.03, -1\n %cmp482 = icmp sgt i32 %l_317.03, 0\n br i1 %cmp482, label %if.then489, label %cleanup552\n\ncleanup552: ; preds = %safe_div_func_int64_t_s_s.exit\n %and14.i.lcssa = phi i32 [ %and14.i, %safe_div_func_int64_t_s_s.exit ]\n %add.i = add nsw i64 %p_181.addr.08, 7\n %conv564 = and i64 %add.i, 255\n %6 = and i64 %p_181.addr.08, 255\n %cmp445.not = icmp eq i64 %6, 22\n br i1 %cmp445.not, label %for.end565, label %for.body447\n\nfor.end565: ; preds = %cleanup552\n %and14.i.lcssa.lcssa = phi i32 [ %and14.i.lcssa, %cleanup552 ]\n store i32 %conv.i, ptr getelementptr inbounds nuw (i8, ptr @g_127, i64 8), align 4\n store i32 %and14.i.lcssa.lcssa, ptr @g_211, align 4\n ret ptr null\n}\n\ndefine ptr @func_183(i64 %p_185) {\nentry:\n %call = call i64 @builtin_uaddl_overflow(i64 %p_185, i64 0)\n unreachable\n}\n\ndefine i64 @builtin_uaddl_overflow(i64 %x, i64 %y) {\nentry:\n %0 = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %x, i64 %y)\n %1 = extractvalue { i64, i1 } %0, 1\n %conv = zext i1 %1 to i64\n ret i64 %conv\n}\n```\n```\nopt: /root/llvm-project/llvm/include/llvm/Support/Casting.h:578: decltype(auto) llvm::cast(From*) [with To = llvm::Instruction; From = llvm::Value]: Assertion `isa<To>(Val) && \"cast<Ty>() argument of incompatible type!\"' failed.\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\nStack dump:\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -O2 <source>\n1.\tRunning pass \"function<eager-inv>(float2int,lower-constant-intrinsics,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-verify-fixpoint>,loop-unroll<O2>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"<source>\"\n2.\tRunning pass \"slp-vectorizer\" on function \"func_125\"\n #0 0x00000000052803a8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x52803a8)\n #1 0x000000000527ddac SignalHandler(int) Signals.cpp:0:0\n #2 0x0000776446c42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\n #3 0x0000776446c969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\n #4 0x0000776446c42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\n #5 0x0000776446c287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\n #6 0x0000776446c2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\n #7 0x0000776446c39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\n #8 0x0000000000b6a41a (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xb6a41a)\n #9 0x0000000004253c98 llvm::slpvectorizer::BoUpSLP::collectValuesToDemote(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, unsigned int&, llvm::SmallVectorImpl<unsigned int>&, llvm::DenseSet<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::DenseMapInfo<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, void>>&, llvm::SmallDenseSet<unsigned int, 8u, llvm::DenseMapInfo<unsigned int, void>> const&, unsigned int&, bool&, bool) const::'lambda10'(unsigned int, unsigned int)::operator()(unsigned int, unsigned int) const::'lambda'(llvm::Value*)::operator()(llvm::Value*) const SLPVectorizer.cpp:0:0\n#10 0x0000000004253f67 bool llvm::function_ref<bool (unsigned int, unsigned int)>::callback_fn<llvm::slpvectorizer::BoUpSLP::collectValuesToDemote(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, unsigned int&, llvm::SmallVectorImpl<unsigned int>&, llvm::DenseSet<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::DenseMapInfo<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, void>>&, llvm::SmallDenseSet<unsigned int, 8u, llvm::DenseMapInfo<unsigned int, void>> const&, unsigned int&, bool&, bool) const::'lambda10'(unsigned int, unsigned int)>(long, unsigned int, unsigned int) SLPVectorizer.cpp:0:0\n#11 0x00000000042e2312 llvm::slpvectorizer::BoUpSLP::collectValuesToDemote(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, unsigned int&, llvm::SmallVectorImpl<unsigned int>&, llvm::DenseSet<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::DenseMapInfo<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, void>>&, llvm::SmallDenseSet<unsigned int, 8u, llvm::DenseMapInfo<unsigned int, void>> const&, unsigned int&, bool&, bool) const::'lambda6'(unsigned int&, llvm::ArrayRef<llvm::slpvectorizer::BoUpSLP::TreeEntry const*>, llvm::function_ref<bool (unsigned int, unsigned int)>)::operator()(unsigned int&, llvm::ArrayRef<llvm::slpvectorizer::BoUpSLP::TreeEntry const*>, llvm::function_ref<bool (unsigned int, unsigned int)>) const SLPVectorizer.cpp:0:0\n#12 0x00000000042deacb llvm::slpvectorizer::BoUpSLP::collectValuesToDemote(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, unsigned int&, llvm::SmallVectorImpl<unsigned int>&, llvm::DenseSet<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::DenseMapInfo<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, void>>&, llvm::SmallDenseSet<unsigned int, 8u, llvm::DenseMapInfo<unsigned int, void>> const&, unsigned int&, bool&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x42deacb)\n#13 0x00000000042df8a0 llvm::slpvectorizer::BoUpSLP::computeMinimumValueSizes()::'lambda0'(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, bool, unsigned int, unsigned int, bool, bool)::operator()(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, bool, unsigned int, unsigned int, bool, bool) const SLPVectorizer.cpp:0:0\n#14 0x00000000042e03d0 llvm::slpvectorizer::BoUpSLP::computeMinimumValueSizes() (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x42e03d0)\n#15 0x000000000431e02d (anonymous namespace)::HorizontalReduction::tryToReduce(llvm::slpvectorizer::BoUpSLP&, llvm::DataLayout const&, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo const&, llvm::AssumptionCache*) SLPVectorizer.cpp:0:0\n#16 0x000000000432015d llvm::SLPVectorizerPass::vectorizeHorReduction(llvm::PHINode*, llvm::Instruction*, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&, llvm::SmallVectorImpl<llvm::WeakTrackingVH>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x432015d)\n#17 0x000000000432494b llvm::SLPVectorizerPass::vectorizeRootInstruction(llvm::PHINode*, llvm::Instruction*, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (.constprop.0) SLPVectorizer.cpp:0:0\n#18 0x000000000432904f llvm::SLPVectorizerPass::vectorizeChainsInBlock(llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x432904f)\n#19 0x000000000432fa86 llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0\n#20 0x00000000043305bb llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x43305bb)\n#21 0x0000000003036f1e llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3036f1e)\n#22 0x000000000507d7f0 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x507d7f0)\n#23 0x0000000000e7023e llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe7023e)\n#24 0x000000000507c10b llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x507c10b)\n#25 0x0000000000e6f8ce llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe6f8ce)\n#26 0x000000000507bb10 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x507bb10)\n#27 0x000000000094448a llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x94448a)\n#28 0x0000000000936a29 optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x936a29)\n#29 0x0000776446c29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\n#30 0x0000776446c29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\n#31 0x000000000092e305 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x92e305)\nProgram terminated with signal: SIGSEGV\nCompiler returned: 139\n```\n\nllvm version: 7e01a322f850e86be9eefde8ae5a30e532d22cfa\nI am working to provide a single-pass reproducer.\n", "author": "dtcxzyw", "labels": [ "llvm:SLPVectorizer", "crash-on-valid" ], "comments": [ { "author": "dtcxzyw", "body": "Missing poison check: https://github.com/llvm/llvm-project/blob/6c5941b09fca487efc5000c82bbce6054bf36a7c/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp#L18000\n" }, { "author": "dtcxzyw", "body": "> I am working to provide a single-pass reproducer.\n\nIt is weird that the single-pass reproducer doesn't work even with `--preserve-ll-uselistorder`.\n" } ] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "d1a7225076218ce224cd29c74259b715b393dc9d", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 2931, 2943 ], [ 17515, 17522 ], [ 17528, 17533 ], [ 17623, 17630 ], [ 17926, 17931 ], [ 17949, 17954 ], [ 18071, 18078 ], [ 18206, 18212 ], [ 18214, 18219 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::collectValuesToDemote", "BoUpSLP::computeMinimumValueSizes" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/minbw-node-used-twice.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux < %s" ], "tests": [ { "test_name": "test", "test_body": "define i8 @test() {\nentry:\n %conv4.i.i = zext i16 0 to i32\n %conv7.i.i = sext i16 0 to i32\n %cmp8.i.i = icmp slt i32 %conv7.i.i, %conv4.i.i\n %conv9.i.i = zext i1 %cmp8.i.i to i32\n %or10.i.i = or i32 %conv9.i.i, %conv4.i.i\n %cmp11.i.i = icmp eq i32 %or10.i.i, %conv4.i.i\n %sub.i.i79.peel.i = sub i16 0, 1\n %xor5.i81.peel.i = zext i16 %sub.i.i79.peel.i to i32\n %conv7.i84.peel.i = sext i16 0 to i32\n %cmp8.i85.peel.i = icmp slt i32 %conv7.i84.peel.i, %xor5.i81.peel.i\n %conv9.i86.peel.i = zext i1 %cmp8.i85.peel.i to i32\n %or10.i87.peel.i = or i32 %conv9.i86.peel.i, %xor5.i81.peel.i\n %cmp11.i88.peel.i = icmp eq i32 %or10.i87.peel.i, %xor5.i81.peel.i\n %conv13.i89.peel.i = zext i1 %cmp8.i85.peel.i to i8\n ret i8 %conv13.i89.peel.i\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLPVectorizer] Miscompile at O3", "body": "Reproducer: https://alive2.llvm.org/ce/z/_88AAB\n```\n; bin/opt -passes=slp-vectorizer reduced.ll -S\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine i8 @func_129() {\nentry:\n %conv4.i.i = zext i16 0 to i32\n %conv7.i.i = sext i16 0 to i32\n %cmp8.i.i = icmp slt i32 %conv7.i.i, %conv4.i.i\n %conv9.i.i = zext i1 %cmp8.i.i to i32\n %or10.i.i = or i32 %conv9.i.i, %conv4.i.i\n %cmp11.i.i = icmp eq i32 %or10.i.i, %conv4.i.i\n %sub.i.i79.peel.i = sub i16 0, 1\n %xor5.i81.peel.i = zext i16 %sub.i.i79.peel.i to i32\n %conv7.i84.peel.i = sext i16 0 to i32\n %cmp8.i85.peel.i = icmp slt i32 %conv7.i84.peel.i, %xor5.i81.peel.i\n %conv9.i86.peel.i = zext i1 %cmp8.i85.peel.i to i32\n %or10.i87.peel.i = or i32 %conv9.i86.peel.i, %xor5.i81.peel.i\n %cmp11.i88.peel.i = icmp eq i32 %or10.i87.peel.i, %xor5.i81.peel.i\n %conv13.i89.peel.i = zext i1 %cmp8.i85.peel.i to i8\n ret i8 %conv13.i89.peel.i\n}\n```\n```\ndefine i8 @func_129() {\nentry:\n %sub.i.i79.peel.i = sub i16 0, 1\n %0 = insertelement <2 x i16> <i16 poison, i16 0>, i16 %sub.i.i79.peel.i, i32 0\n %1 = icmp slt <2 x i16> zeroinitializer, %0\n %2 = zext <2 x i1> %1 to <2 x i16>\n %3 = or <2 x i16> %2, %0\n %4 = icmp eq <2 x i16> %3, %0\n %5 = extractelement <2 x i1> %1, i32 0\n %conv13.i89.peel.i = zext i1 %5 to i8\n ret i8 %conv13.i89.peel.i\n}\n```\n```\n----------------------------------------\ndefine i8 @src() {\nentry:\n %sub.i.i79.peel.i = sub i16 0, 1\n %xor5.i81.peel.i = zext i16 %sub.i.i79.peel.i to i32\n %conv7.i84.peel.i = sext i16 0 to i32\n %cmp8.i85.peel.i = icmp slt i32 %conv7.i84.peel.i, %xor5.i81.peel.i\n %conv13.i89.peel.i = zext i1 %cmp8.i85.peel.i to i8\n ret i8 %conv13.i89.peel.i\n}\n=>\ndefine i8 @tgt() {\nentry:\n %sub.i.i79.peel.i = sub i16 0, 1\n %#0 = insertelement <2 x i16> { poison, 0 }, i16 %sub.i.i79.peel.i, i32 0\n %#1 = icmp slt <2 x i16> { 0, 0 }, %#0\n %#5 = extractelement <2 x i1> %#1, i32 0\n %conv13.i89.peel.i = zext i1 %#5 to i8\n ret i8 %conv13.i89.peel.i\n}\nTransformation doesn't verify!\n\nERROR: Value mismatch\n\nExample:\n\nSource:\ni16 %sub.i.i79.peel.i = #xffff (65535, -1)\ni32 %xor5.i81.peel.i = #x0000ffff (65535)\ni32 %conv7.i84.peel.i = #x00000000 (0)\ni1 %cmp8.i85.peel.i = #x1 (1)\ni8 %conv13.i89.peel.i = #x01 (1)\n\nTarget:\ni16 %sub.i.i79.peel.i = #xffff (65535, -1)\n<2 x i16> %#0 = < #xffff (65535, -1), #x0000 (0) >\n<2 x i1> %#1 = < #x0 (0), #x0 (0) >\ni1 %#5 = #x0 (0)\ni8 %conv13.i89.peel.i = #x00 (0)\nSource value: #x01 (1)\nTarget value: #x00 (0)\n```\n", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:SLPVectorizer" ], "comments": [ { "author": "fhahn", "body": "cc @alexey-bataev \n" } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "1de3dc7d23dd6b856efad3a3a04f2396328726d7", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 4052, 4058 ], [ 4064, 4069 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationCostModel::computeMaxVF" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product-epilogue.ll", "commands": [ "opt -mattr=+dotprod -passes=loop-vectorize -force-vector-interleave=1 -S < %s" ], "tests": [ { "test_name": "dotp", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i32 @dotp(ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product-mixed.ll", "commands": [ "opt -passes=loop-vectorize -enable-epilogue-vectorization=false -mattr=+i8mm,+dotprod -S < %s", "opt -passes=loop-vectorize -enable-epilogue-vectorization=false -mattr=+dotprod -S < %s" ], "tests": [ { "test_name": "dotp_z_s", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i32 @dotp_z_s(ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = sext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "dotp_s_z", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i32 @dotp_s_z(ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = sext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product-neon.ll", "commands": [ "opt -passes=loop-vectorize -enable-epilogue-vectorization=false -mattr=+neon,+dotprod -force-vector-interleave=1 -S < %s", "opt -passes=loop-vectorize -enable-epilogue-vectorization=false -mattr=+neon,+dotprod -S < %s", "opt -passes=loop-vectorize -enable-epilogue-vectorization=false -mattr=+neon,+dotprod -force-vector-interleave=1 -vectorizer-maximize-bandwidth -S < %s" ], "tests": [ { "test_name": "dotp_unrolled", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\ndefine i32 @dotp_unrolled(i32 %num_out, i64 %num_in, ptr %a, ptr %b) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum3 = phi i32 [ 0, %entry ], [ %add.a3, %for.body ]\n %accum2 = phi i32 [ 0, %entry ], [ %add.a2, %for.body ]\n %accum1 = phi i32 [ 0, %entry ], [ %add.a1, %for.body ]\n %accum0 = phi i32 [ 0, %entry ], [ %add.a0, %for.body ]\n %gep.a0 = getelementptr inbounds i8, ptr %a, i64 %iv\n %gep.b0 = getelementptr inbounds i8, ptr %b, i64 %iv\n %offset.1 = or disjoint i64 %iv, 1\n %gep.a1 = getelementptr inbounds i8, ptr %a, i64 %offset.1\n %gep.b1 = getelementptr inbounds i8, ptr %b, i64 %offset.1\n %offset.2 = or disjoint i64 %iv, 2\n %gep.a2 = getelementptr inbounds i8, ptr %a, i64 %offset.2\n %gep.b2 = getelementptr inbounds i8, ptr %b, i64 %offset.2\n %offset.3 = or disjoint i64 %iv, 3\n %gep.a3 = getelementptr inbounds i8, ptr %a, i64 %offset.3\n %gep.b3 = getelementptr inbounds i8, ptr %b, i64 %offset.3\n %load.a0 = load i8, ptr %gep.a0, align 1\n %ext.a0 = sext i8 %load.a0 to i32\n %load.b0 = load i8, ptr %gep.b0, align 1\n %ext.b0 = sext i8 %load.b0 to i32\n %mul.a0 = mul nsw i32 %ext.b0, %ext.a0\n %add.a0 = add nsw i32 %mul.a0, %accum0\n %load.a1 = load i8, ptr %gep.a1, align 1\n %ext.a1 = sext i8 %load.a1 to i32\n %load.b1 = load i8, ptr %gep.b1, align 1\n %ext.b1 = sext i8 %load.b1 to i32\n %mul.a1 = mul nsw i32 %ext.a1, %ext.b1\n %add.a1 = add nsw i32 %mul.a1, %accum1\n %load.a2 = load i8, ptr %gep.a2, align 1\n %ext.a2 = sext i8 %load.a2 to i32\n %load.b2 = load i8, ptr %gep.b2, align 1\n %ext.b2 = sext i8 %load.b2 to i32\n %mul.a2 = mul nsw i32 %ext.a2, %ext.b2\n %add.a2 = add nsw i32 %mul.a2, %accum2\n %load.a3 = load i8, ptr %gep.a3, align 1\n %ext.a3 = sext i8 %load.a3 to i32\n %load.b3 = load i8, ptr %gep.b3, align 1\n %ext.b3 = sext i8 %load.b3 to i32\n %mul.a3 = mul nsw i32 %ext.a3, %ext.b3\n %add.a3 = add nsw i32 %mul.a3, %accum3\n %iv.next = add nuw nsw i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, %num_in\n br i1 %exitcond.not, label %exit, label %for.body\n\nexit: ; preds = %for.body\n %result0 = add nsw i32 %add.a0, %add.a1\n %result1 = add nsw i32 %add.a2, %add.a3\n %result = add nsw i32 %result0, %result1\n ret i32 %result\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "dotp", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\ndefine i32 @dotp(ptr %a, ptr %b) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_predicated_pragma", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\ndefine i32 @not_dotp_predicated_pragma(i64 %N, ptr %a, ptr %b) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr inbounds i8, ptr %b, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = sext i8 %load.a to i32\n %gep.a2 = getelementptr inbounds i8, ptr %a, i64 %iv\n %load.b = load i8, ptr %gep.a2, align 1\n %ext.b = sext i8 %load.b to i32\n %mul = mul nsw i32 %ext.b, %ext.a\n %add = add nsw i32 %mul, %accum\n %iv.next = add nuw nsw i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, %N\n br i1 %exitcond.not, label %exit, label %for.body, !llvm.loop !0\n\nexit: ; preds = %for.body\n ret i32 %add\n}\n\n!0 = distinct !{!0, !1, !2, !3}\n!1 = !{!\"llvm.loop.mustprogress\"}\n!2 = !{!\"llvm.loop.vectorize.predicate.enable\", i1 true}\n!3 = !{!\"llvm.loop.vectorize.enable\", i1 true}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_not_loop_carried", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\ndefine i32 @not_dotp_not_loop_carried(ptr %a, ptr %b) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %mul, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_different_types", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\ndefine i32 @not_dotp_different_types(ptr %a, ptr %b) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i16, ptr %gep.b, align 2\n %ext.b = zext i16 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_not_phi", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\ndefine i32 @not_dotp_not_phi(ptr %a, ptr %b) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %ext.b\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_extend_user", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\ndefine i32 @not_dotp_extend_user(ptr %a, ptr %b) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n %result = add i32 %add, %ext.b\n ret i32 %result\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_predicated", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\ndefine i32 @not_dotp_predicated(i64 %N, ptr %a, ptr %b) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr inbounds i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = sext i8 %load.a to i32\n %gep.b = getelementptr inbounds i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = sext i8 %load.b to i32\n %mul = mul nsw i32 %ext.b, %ext.a\n %add = add nsw i32 %mul, %accum\n %iv.next = add nuw nsw i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, %N\n br i1 %exitcond.not, label %exit, label %for.body\n\nexit: ; preds = %for.body\n ret i32 %add\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product.ll", "commands": [ "opt -passes=loop-vectorize -force-vector-interleave=1 -enable-epilogue-vectorization=false -S < %s", "opt -passes=loop-vectorize -enable-epilogue-vectorization=false -S < %s", "opt -passes=loop-vectorize -force-vector-interleave=1 -vectorizer-maximize-bandwidth -enable-epilogue-vectorization=false -S < %s" ], "tests": [ { "test_name": "not_dotp_not_phi2", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine void @not_dotp_not_phi2(ptr %matrix, i32 %n) #0 {\nentry:\n %cmp = icmp sgt i32 %n, 0\n br i1 %cmp, label %for.preheader, label %exit\n\nfor.preheader: ; preds = %entry\n %load.a = load i8, ptr null, align 1\n %load.a1 = load i8, ptr inttoptr (i64 1 to ptr), align 1\n %a.ext = sext i8 %load.a to i32\n %a.ext1 = sext i8 %load.a1 to i32\n br label %for.body\n\nfor.body: ; preds = %for.body, %for.preheader\n %iv = phi i32 [ %iv.next, %for.body ], [ 0, %for.preheader ]\n %ptr = phi ptr [ %scevgep, %for.body ], [ %matrix, %for.preheader ]\n %accum = phi i32 [ %add.1, %for.body ], [ 0, %for.preheader ]\n %gep.b = getelementptr i8, ptr %ptr, i64 1\n %gep.b1 = getelementptr i8, ptr %ptr, i64 2\n %load.b = load i8, ptr %gep.b, align 1\n %b.ext = sext i8 %load.b to i32\n %mul = mul nsw i32 %a.ext, %b.ext\n %add = add i32 %mul, %accum\n %load.b1 = load i8, ptr %gep.b1, align 1\n %b.ext1 = sext i8 %load.b1 to i32\n %mul.1 = mul nsw i32 %a.ext1, %b.ext1\n %add.1 = add i32 %mul.1, %add\n %scevgep = getelementptr i8, ptr %ptr, i64 16\n %iv.next = add nuw nsw i32 %iv, 1\n %exitcond.not = icmp eq i32 %iv.next, %n\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n %add.1.lcssa = phi i32 [ %add.1, %for.body ]\n %add.float = sitofp i32 %add.1.lcssa to float\n br label %exit\n\nexit: ; preds = %for.exit, %entry\n %result = phi float [ 0.000000e+00, %entry ], [ %add.float, %for.exit ]\n store float %result, ptr %matrix, align 4\n ret void\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_ext_outside_plan2", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i64 @not_dotp_ext_outside_plan2(ptr %a, i16 %b, i64 %n) #0 {\nentry:\n %cmp = icmp eq i64 %n, 0\n br i1 %cmp, label %exit, label %for.ph\n\nfor.ph: ; preds = %entry\n %ext.b = zext i16 %b to i64\n br label %for.body\n\nfor.body: ; preds = %for.body, %for.ph\n %iv = phi i64 [ 0, %for.ph ], [ %iv.next, %for.body ]\n %accum = phi i64 [ 0, %for.ph ], [ %add, %for.body ]\n %gep.a = getelementptr inbounds nuw i16, ptr %a, i64 %iv\n %load.a = load i16, ptr %gep.a, align 2\n %ext.a = zext i16 %load.a to i64\n %mul = mul nuw nsw i64 %ext.b, %ext.a\n %add = add i64 %mul, %accum\n %iv.next = add nuw nsw i64 %iv, 1\n %cmp.1 = icmp eq i64 %iv.next, %n\n br i1 %cmp.1, label %exit, label %for.body\n\nexit: ; preds = %for.body, %entry\n %result = phi i64 [ 0, %entry ], [ %add, %for.body ]\n ret i64 %result\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "dotp_unrolled", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i32 @dotp_unrolled(i32 %num_out, i64 %num_in, ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum3 = phi i32 [ 0, %entry ], [ %add.a3, %for.body ]\n %accum2 = phi i32 [ 0, %entry ], [ %add.a2, %for.body ]\n %accum1 = phi i32 [ 0, %entry ], [ %add.a1, %for.body ]\n %accum0 = phi i32 [ 0, %entry ], [ %add.a0, %for.body ]\n %gep.a0 = getelementptr inbounds i8, ptr %a, i64 %iv\n %gep.b0 = getelementptr inbounds i8, ptr %b, i64 %iv\n %offset.1 = or disjoint i64 %iv, 1\n %gep.a1 = getelementptr inbounds i8, ptr %a, i64 %offset.1\n %gep.b1 = getelementptr inbounds i8, ptr %b, i64 %offset.1\n %offset.2 = or disjoint i64 %iv, 2\n %gep.a2 = getelementptr inbounds i8, ptr %a, i64 %offset.2\n %gep.b2 = getelementptr inbounds i8, ptr %b, i64 %offset.2\n %offset.3 = or disjoint i64 %iv, 3\n %gep.a3 = getelementptr inbounds i8, ptr %a, i64 %offset.3\n %gep.b3 = getelementptr inbounds i8, ptr %b, i64 %offset.3\n %load.a0 = load i8, ptr %gep.a0, align 1\n %ext.a0 = sext i8 %load.a0 to i32\n %load.b0 = load i8, ptr %gep.b0, align 1\n %ext.b0 = sext i8 %load.b0 to i32\n %mul.a0 = mul nsw i32 %ext.b0, %ext.a0\n %add.a0 = add nsw i32 %mul.a0, %accum0\n %load.a1 = load i8, ptr %gep.a1, align 1\n %ext.a1 = sext i8 %load.a1 to i32\n %load.b1 = load i8, ptr %gep.b1, align 1\n %ext.b1 = sext i8 %load.b1 to i32\n %mul.a1 = mul nsw i32 %ext.a1, %ext.b1\n %add.a1 = add nsw i32 %mul.a1, %accum1\n %load.a2 = load i8, ptr %gep.a2, align 1\n %ext.a2 = sext i8 %load.a2 to i32\n %load.b2 = load i8, ptr %gep.b2, align 1\n %ext.b2 = sext i8 %load.b2 to i32\n %mul.a2 = mul nsw i32 %ext.a2, %ext.b2\n %add.a2 = add nsw i32 %mul.a2, %accum2\n %load.a3 = load i8, ptr %gep.a3, align 1\n %ext.a3 = sext i8 %load.a3 to i32\n %load.b3 = load i8, ptr %gep.b3, align 1\n %ext.b3 = sext i8 %load.b3 to i32\n %mul.a3 = mul nsw i32 %ext.a3, %ext.b3\n %add.a3 = add nsw i32 %mul.a3, %accum3\n %iv.next = add nuw nsw i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, %num_in\n br i1 %exitcond.not, label %exit, label %for.body\n\nexit: ; preds = %for.body\n %result0 = add nsw i32 %add.a0, %add.a1\n %result1 = add nsw i32 %add.a2, %add.a3\n %result = add nsw i32 %result0, %result1\n ret i32 %result\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "dotp", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i32 @dotp(ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_predicated_pragma", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i32 @not_dotp_predicated_pragma(i64 %N, ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr inbounds i8, ptr %b, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = sext i8 %load.a to i32\n %gep.a2 = getelementptr inbounds i8, ptr %a, i64 %iv\n %load.b = load i8, ptr %gep.a2, align 1\n %ext.b = sext i8 %load.b to i32\n %mul = mul nsw i32 %ext.b, %ext.a\n %add = add nsw i32 %mul, %accum\n %iv.next = add nuw nsw i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, %N\n br i1 %exitcond.not, label %exit, label %for.body, !llvm.loop !0\n\nexit: ; preds = %for.body\n ret i32 %add\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n\n!0 = distinct !{!0, !1, !2, !3}\n!1 = !{!\"llvm.loop.mustprogress\"}\n!2 = !{!\"llvm.loop.vectorize.predicate.enable\", i1 true}\n!3 = !{!\"llvm.loop.vectorize.enable\", i1 true}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "dotp_cost_disagreement", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i64 @dotp_cost_disagreement(ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %i.iv = phi i64 [ 0, %entry ], [ %i.iv.next, %for.body ]\n %sum = phi i64 [ 0, %entry ], [ %add, %for.body ]\n %arrayidx = getelementptr inbounds nuw i8, ptr %a, i64 %i.iv\n %0 = load i8, ptr %arrayidx, align 1\n %conv = zext i8 %0 to i64\n %i.iv.next = add nuw nsw i64 %i.iv, 1\n %arrayidx2 = getelementptr inbounds nuw i8, ptr %b, i64 %i.iv.next\n %1 = load i8, ptr %arrayidx2, align 1\n %conv3 = zext i8 %1 to i64\n %mul = mul nuw nsw i64 %conv3, %conv\n %add = add i64 %sum, %mul\n %exitcond.not = icmp eq i64 %i.iv.next, 16\n br i1 %exitcond.not, label %exit, label %for.body\n\nexit: ; preds = %for.body\n ret i64 %add\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_not_loop_carried", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i32 @not_dotp_not_loop_carried(ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %mul, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_different_types", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i32 @not_dotp_different_types(ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i16, ptr %gep.b, align 2\n %ext.b = zext i16 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_not_phi", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i32 @not_dotp_not_phi(ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %ext.b\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_extend_user", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i32 @not_dotp_extend_user(ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n %result = add i32 %add, %ext.b\n ret i32 %result\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_ext_outside_plan", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i64 @not_dotp_ext_outside_plan(ptr %a, i16 %b, i64 %n) #0 {\nentry:\n %cmp = icmp eq i64 %n, 0\n br i1 %cmp, label %exit, label %for.ph\n\nfor.ph: ; preds = %entry\n %ext.b = zext i16 %b to i64\n br label %for.body\n\nfor.body: ; preds = %for.body, %for.ph\n %iv = phi i64 [ 0, %for.ph ], [ %iv.next, %for.body ]\n %accum = phi i64 [ 0, %for.ph ], [ %add, %for.body ]\n %gep.a = getelementptr inbounds nuw i16, ptr %a, i64 %iv\n %load.a = load i16, ptr %gep.a, align 2\n %ext.a = zext i16 %load.a to i64\n %mul = mul nuw nsw i64 %ext.a, %ext.b\n %add = add i64 %mul, %accum\n %iv.next = add nuw nsw i64 %iv, 1\n %cmp.1 = icmp eq i64 %iv.next, %n\n br i1 %cmp.1, label %exit, label %for.body\n\nexit: ; preds = %for.body, %entry\n %result = phi i64 [ 0, %entry ], [ %add, %for.body ]\n ret i64 %result\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_dotp_predicated", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\n; Function Attrs: vscale_range(1,16)\ndefine i32 @not_dotp_predicated(i64 %N, ptr %a, ptr %b) #0 {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr inbounds i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = sext i8 %load.a to i32\n %gep.b = getelementptr inbounds i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = sext i8 %load.b to i32\n %mul = mul nsw i32 %ext.b, %ext.a\n %add = add nsw i32 %mul, %accum\n %iv.next = add nuw nsw i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, %N\n br i1 %exitcond.not, label %exit, label %for.body\n\nexit: ; preds = %for.body\n ret i32 %add\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-no-dotprod.ll", "commands": [ "opt -passes=loop-vectorize -enable-epilogue-vectorization=false -mattr=+neon -S < %s" ], "tests": [ { "test_name": "not_dotp", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\ndefine i32 @not_dotp(ptr %a, ptr %b) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1000\n br i1 %exitcond.not, label %for.exit, label %for.body\n\nfor.exit: ; preds = %for.body\n ret i32 %add\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/AArch64/store-costs-sve.ll", "commands": [ "opt -p loop-vectorize -S %s", "opt -p loop-vectorize -prefer-predicate-over-epilogue=predicate-else-scalar-epilogue -S %s" ], "tests": [ { "test_name": "trunc_store", "test_body": "target datalayout = \"e-m:o-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"arm64-apple-macosx14.0.0\"\n\n; Function Attrs: vscale_range(1,16)\ndefine void @trunc_store(ptr %dst, ptr %src, i16 %x) #0 {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %x.ext = zext i16 %x to i64\n %l = load i64, ptr %src, align 8\n %and = and i64 %l, %x.ext\n %trunc = trunc i64 %and to i8\n %gep = getelementptr i8, ptr %dst, i64 %iv\n store i8 %trunc, ptr %gep, align 1\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, 1000\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\nattributes #0 = { vscale_range(1,16) \"target-features\"=\"+sve\" }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/AArch64/vplan-printing.ll", "commands": [ "opt -mattr=+neon,+dotprod -passes=loop-vectorize -debug-only=loop-vectorize -force-vector-interleave=1 -disable-output %s 2>&1" ], "tests": [ { "test_name": "print_partial_reduction", "test_body": "target datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-none-unknown-elf\"\n\ndefine i32 @print_partial_reduction(ptr %a, ptr %b) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.body, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]\n %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]\n %gep.a = getelementptr i8, ptr %a, i64 %iv\n %load.a = load i8, ptr %gep.a, align 1\n %ext.a = zext i8 %load.a to i32\n %gep.b = getelementptr i8, ptr %b, i64 %iv\n %load.b = load i8, ptr %gep.b, align 1\n %ext.b = zext i8 %load.b to i32\n %mul = mul i32 %ext.b, %ext.a\n %add = add i32 %mul, %accum\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv.next, 1024\n br i1 %exitcond.not, label %exit, label %for.body\n\nexit: ; preds = %for.body\n ret i32 %add\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/Hexagon/maximum-vf-crash.ll", "commands": [ "opt -mtriple=hexagon -hexagon-autohvx -passes=loop-vectorize -S < %s 2>&1" ], "tests": [ { "test_name": "f", "test_body": "target datalayout = \"e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048\"\n\n; Function Attrs: optsize\ndefine i32 @f(ptr %src) #0 {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %g.016 = phi i32 [ 0, %entry ], [ %g.1.lcssa, %loop ]\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]\n %0 = load i8, ptr %src, align 1\n %g.1.lcssa = add i32 %g.016, 1\n %iv.next = add nsw i32 %iv, 1\n %exitcond = icmp eq i32 %iv.next, 1000\n br i1 %exitcond, label %exit, label %loop\n\nexit: ; preds = %loop\n ret i32 %g.1.lcssa\n}\n\nattributes #0 = { optsize \"target-features\"=\"+hvx-length128b\" }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/X86/cost-constant-known-via-scev.ll", "commands": [ "opt -p loop-vectorize -S %s" ], "tests": [ { "test_name": "second_lshr_operand_zero_via_scev", "test_body": "target datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine i64 @second_lshr_operand_zero_via_scev() {\nentry:\n %ext.0 = sext i8 0 to i32\n br label %loops\n\nloops: ; preds = %loops, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loops ]\n %red = phi i64 [ 0, %entry ], [ %red.next, %loops ]\n %c = icmp eq i64 %iv, 0\n %and = and i64 %iv, 0\n %0 = trunc i64 %iv to i32\n %shr = lshr i32 %0, %ext.0\n %conv.1 = zext i32 %shr to i64\n %red.next.v = select i1 %c, i64 %and, i64 %conv.1\n %red.next = or i64 %red.next.v, %red\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, 1000\n br i1 %ec, label %exit, label %loops\n\nexit: ; preds = %loops\n %res = phi i64 [ %red.next, %loops ]\n ret i64 %res\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/X86/cost-model.ll", "commands": [ "opt < %s -passes=loop-vectorize -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx -S" ], "tests": [ { "test_name": "narrowed_reduction", "test_body": "target datalayout = \"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-apple-macosx10.8.0\"\n\ndefine i32 @narrowed_reduction(ptr %a, i1 %cmp) #0 {\nentry:\n %conv = zext i1 %cmp to i32\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i32 [ 1, %entry ], [ %inc, %loop ]\n %or13 = phi i32 [ 0, %entry ], [ %or, %loop ]\n %and = and i32 %or13, 1\n %or = or i32 %and, %conv\n %inc = add i32 %iv, 1\n %ec = icmp eq i32 %iv, 16\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret i32 %or\n}\n\nattributes #0 = { \"target-cpu\"=\"penryn\" }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/X86/drop-poison-generating-flags.ll", "commands": [ "opt %s -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S" ], "tests": [ { "test_name": "drop_zext_nneg", "test_body": "target datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-pc-linux-gnu\"\n\n; Function Attrs: noinline nounwind uwtable\ndefine void @drop_zext_nneg(ptr noalias %p, ptr noalias %p1) #0 {\nentry:\n br label %body\n\nbody: ; preds = %else, %entry\n %iv = phi i64 [ %next, %else ], [ 0, %entry ]\n %0 = trunc i64 %iv to i32\n %c = icmp eq i32 %0, 0\n br i1 %c, label %then, label %else\n\nthen: ; preds = %body\n %zext = zext nneg i32 %0 to i64\n %idx1 = getelementptr double, ptr %p, i64 %zext\n %idx2 = getelementptr double, ptr %p, i64 %zext\n %1 = load double, ptr %idx2, align 8\n br label %else\n\nelse: ; preds = %then, %body\n %phi = phi double [ %1, %then ], [ 0.000000e+00, %body ]\n store double %phi, ptr %p1, align 8\n %next = add i64 %iv, 1\n %cmp = icmp eq i64 %next, 1024\n br i1 %cmp, label %exit, label %body\n\nexit: ; preds = %else\n ret void\n}\n\nattributes #0 = { noinline nounwind uwtable \"target-features\"=\"+avx512bw,+avx512cd,+avx512dq,+avx512f,+avx512vl\" }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/X86/interleave-cost.ll", "commands": [ "opt -p loop-vectorize -S %s" ], "tests": [ { "test_name": "test_free_instructions_feeding_geps_for_interleave_groups", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-apple-macosx10.15.0\"\n\ndefine void @test_free_instructions_feeding_geps_for_interleave_groups(ptr noalias %p.invar, ptr noalias %dst.1, ptr noalias %dst.2) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %l.0 = load float, ptr %p.invar, align 4\n %iv.mul = shl i64 %iv, 2\n %gep.dst.19 = getelementptr float, ptr %dst.1, i64 %iv.mul\n store float %l.0, ptr %gep.dst.19, align 4\n %l.1 = load float, ptr %p.invar, align 4\n %add.1 = or disjoint i64 %iv.mul, 1\n %gep.dst.119 = getelementptr float, ptr %dst.1, i64 %add.1\n store float %l.1, ptr %gep.dst.119, align 4\n %add.2 = or disjoint i64 %iv.mul, 2\n %gep.dst.129 = getelementptr float, ptr %dst.1, i64 %add.2\n store float 0.000000e+00, ptr %gep.dst.129, align 4\n %add.3 = or disjoint i64 %iv.mul, 3\n %gep.dst.140 = getelementptr float, ptr %dst.1, i64 %add.3\n store float 0.000000e+00, ptr %gep.dst.140, align 4\n %l.2 = load float, ptr %p.invar, align 4\n %gep.dst.247 = getelementptr float, ptr %dst.2, i64 %iv.mul\n store float %l.2, ptr %gep.dst.247, align 4\n %gep.dst.255 = getelementptr float, ptr %dst.2, i64 %add.1\n store float 0.000000e+00, ptr %gep.dst.255, align 4\n %gep.dst.265 = getelementptr float, ptr %dst.2, i64 %add.2\n store float 0.000000e+00, ptr %gep.dst.265, align 4\n %gep.dst.276 = getelementptr float, ptr %dst.2, i64 %add.3\n store float 0.000000e+00, ptr %gep.dst.276, align 4\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, 1024\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/X86/replicate-uniform-call.ll", "commands": [ "opt -p loop-vectorize -S %s" ], "tests": [ { "test_name": "smax_call_uniform", "test_body": "target datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine void @smax_call_uniform(ptr %dst, i64 %x) {\nentry:\n %c = icmp ult i8 -68, -69\n %mul = mul nuw nsw i64 %x, 0\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n br i1 %c, label %loop.latch, label %else\n\nelse: ; preds = %loop.header\n %rem = urem i64 %mul, %x\n %smax = tail call i64 @llvm.smax.i64(i64 %rem, i64 0)\n br label %loop.latch\n\nloop.latch: ; preds = %else, %loop.header\n %p = phi i64 [ 1, %loop.header ], [ %smax, %else ]\n %add = add i64 %p, 1\n %gep = getelementptr i64, ptr %dst, i64 %add\n store i64 0, ptr %gep, align 8\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, 1024\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i64 @llvm.smax.i64(i64, i64) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/epilog-vectorization-vector-trip-count-zero.ll", "commands": [ "opt -p loop-vectorize -force-vector-width=2 -epilogue-vectorization-force-VF=2 -S %s" ], "tests": [ { "test_name": "vector_trip_count_0_as_btc_is_all_1", "test_body": "target datalayout = \"E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64\"\n\ndefine void @vector_trip_count_0_as_btc_is_all_1(ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]\n %iv.next = add i32 %iv, -1\n %gep = getelementptr inbounds i32, ptr %dst, i32 %iv\n store i32 %iv.next, ptr %gep, align 4\n %ec = icmp eq i32 %iv.next, 0\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/first-order-recurrence-chains.ll", "commands": [ "opt -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S %s" ], "tests": [ { "test_name": "test_resinking_required", "test_body": "define double @test_resinking_required(ptr %p, ptr noalias %a, ptr noalias %b) {\nEntry:\n br label %Loop\n\nLoop: ; preds = %Loop, %Entry\n %for.1 = phi double [ %l1, %Loop ], [ 0.000000e+00, %Entry ]\n %for.2 = phi double [ %l2, %Loop ], [ 0.000000e+00, %Entry ]\n %for.3 = phi double [ %for.2, %Loop ], [ 0.000000e+00, %Entry ]\n %iv = phi i64 [ %iv.next, %Loop ], [ 0, %Entry ]\n %USE_2_FORS = fdiv double %for.3, %for.1\n %div = fdiv double 0.000000e+00, %for.1\n %l1 = load double, ptr %a, align 8\n %iv.next = add nuw nsw i64 %iv, 1\n %l2 = load double, ptr %b, align 8\n store double %div, ptr %p, align 8\n %cond = icmp eq i64 %iv.next, 1000\n br i1 %cond, label %End, label %Loop\n\nEnd: ; preds = %Loop\n %res.1 = fadd double %for.1, %for.2\n %res.2 = fadd double %res.1, %for.3\n ret double %res.2\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/if-pred-stores.ll", "commands": [ "opt -S -vectorize-num-stores-pred=1 -force-vector-width=1 -force-vector-interleave=2 -passes=loop-vectorize,simplifycfg -verify-loop-info -simplifycfg-require-and-preserve-domtree=1 < %s", "opt -S -vectorize-num-stores-pred=1 -force-vector-width=1 -force-vector-interleave=2 -passes=loop-vectorize -verify-loop-info < %s", "opt -S -vectorize-num-stores-pred=1 -force-vector-width=2 -force-vector-interleave=1 -passes=loop-vectorize,simplifycfg -verify-loop-info -simplifycfg-require-and-preserve-domtree=1 < %s" ], "tests": [ { "test_name": "minimal_bit_widths_with_aliasing_store", "test_body": "target datalayout = \"e-m:o-i64:64-f80:128-n8:16:32:64-S128\"\n\ndefine void @minimal_bit_widths_with_aliasing_store(i1 %c, ptr %ptr) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.inc, %entry\n %tmp0 = phi i64 [ %tmp6, %for.inc ], [ 0, %entry ]\n %tmp1 = phi i64 [ %tmp7, %for.inc ], [ 1000, %entry ]\n %tmp2 = getelementptr i8, ptr %ptr, i64 %tmp0\n %tmp3 = load i8, ptr %tmp2, align 1\n store i8 0, ptr %tmp2, align 1\n br i1 %c, label %if.then, label %for.inc\n\nif.then: ; preds = %for.body\n %tmp4 = zext i8 %tmp3 to i32\n %tmp5 = trunc i32 %tmp4 to i8\n store i8 %tmp5, ptr %tmp2, align 1\n br label %for.inc\n\nfor.inc: ; preds = %if.then, %for.body\n %tmp6 = add nuw nsw i64 %tmp0, 1\n %tmp7 = add i64 %tmp1, -1\n %tmp8 = icmp eq i64 %tmp7, 0\n br i1 %tmp8, label %for.end, label %for.body\n\nfor.end: ; preds = %for.inc\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/induction.ll", "commands": [ "opt < %s -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=2 -force-widen-divrem-via-safe-divisor=0 -S", "opt < %s -passes=loop-vectorize,instcombine -force-vector-interleave=1 -force-vector-width=2 -force-widen-divrem-via-safe-divisor=0 -S", "opt < %s -passes=loop-vectorize,instcombine -force-vector-interleave=2 -force-vector-width=2 -force-widen-divrem-via-safe-divisor=0 -S", "opt < %s -passes=loop-vectorize -force-vector-interleave=2 -force-vector-width=2 -force-widen-divrem-via-safe-divisor=0 -S", "opt < %s -passes=loop-vectorize,instcombine -force-vector-interleave=2 -force-vector-width=4 -force-widen-divrem-via-safe-divisor=0 -enable-interleaved-mem-accesses -S" ], "tests": [ { "test_name": "max_i32_backedgetaken", "test_body": "target datalayout = \"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128\"\n\ndefine i32 @max_i32_backedgetaken() {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %a.0 = phi i32 [ 1, %entry ], [ %a.0.and, %loop ]\n %b.0 = phi i32 [ 0, %entry ], [ %b.next, %loop ]\n %a.0.and = and i32 %a.0, 4\n %b.next = add i32 %b.0, -1\n %ec = icmp eq i32 %b.next, 0\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret i32 %a.0.and\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/interleave-and-scalarize-only.ll", "commands": [ "opt -passes=loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -debug -disable-output %s 2>&1", "opt -passes=loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -S %s" ], "tests": [ { "test_name": "scalarize_ptrtoint", "test_body": "define void @scalarize_ptrtoint(ptr %src, ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %gep = getelementptr ptr, ptr %src, i64 %iv\n %l = load ptr, ptr %gep, align 8\n %cast = ptrtoint ptr %l to i64\n %add = add i64 %cast, 10\n %cast.2 = inttoptr i64 %add to ptr\n store ptr %cast.2, ptr %dst, align 8\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, 1024\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/is_fpclass.ll", "commands": [ "opt < %s -passes=loop-vectorize -force-vector-width=2 -S" ], "tests": [ { "test_name": "d", "test_body": "define void @d() {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %i = phi i64 [ 0, %entry ], [ %i7, %loop ]\n %i3 = load float, ptr null, align 4\n %i4 = getelementptr float, ptr @d, i64 %i\n %i5 = tail call i1 @llvm.is.fpclass.f32(float %i3, i32 0)\n %i6 = select i1 %i5, float 0.000000e+00, float 0.000000e+00\n store float %i6, ptr %i4, align 4\n %i7 = add i64 %i, 1\n %i8 = icmp eq i64 %i7, 128\n br i1 %i8, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i1 @llvm.is.fpclass.f32(float, i32 immarg) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/optimal-epilog-vectorization.ll", "commands": [ "opt -passes='loop-vectorize' -force-vector-width=4 -enable-epilogue-vectorization -epilogue-vectorization-force-VF=4 -S %s", "opt -passes='loop-vectorize' -enable-epilogue-vectorization -epilogue-vectorization-force-VF=2 -S %s" ], "tests": [ { "test_name": "multiple_ivs_wide", "test_body": "target datalayout = \"e-m:e-i64:64-n32:64-v128:128:128\"\n\ndefine void @multiple_ivs_wide(ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]\n %iv.2 = phi i32 [ -64, %entry ], [ %iv.2.next, %loop ]\n %iv.next = add i32 %iv, 2\n %iv.2.next = add i32 %iv.2, 2\n %gep = getelementptr inbounds i32, ptr %dst, i32 %iv\n store i32 %iv.2.next, ptr %gep, align 4\n %ec = icmp eq i32 %iv.next, 128\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/runtime-checks-hoist.ll", "commands": [ "opt < %s -passes='loop-vectorize' -force-vector-interleave=1 -S -force-vector-width=4 -debug-only=loop-accesses,loop-vectorize,loop-utils" ], "tests": [ { "test_name": "stride_check_known_via_loop_guard", "test_body": "target datalayout = \"e-m:e-i64:64-i128:128-n32:64-S128\"\n\ndefine void @stride_check_known_via_loop_guard(ptr %C, ptr %A, i32 %Acols) {\nentry:\n %pre.c = icmp ugt i32 %Acols, 0\n br i1 %pre.c, label %exit, label %outer.header\n\nouter.header: ; preds = %outer.latch, %entry\n %outer.iv = phi i32 [ 0, %entry ], [ %outer.iv.next, %outer.latch ]\n %mul.us = mul i32 %outer.iv, %Acols\n %arrayidx.us = getelementptr double, ptr %A, i32 %mul.us\n br label %inner\n\ninner: ; preds = %inner, %outer.header\n %inner.iv = phi i32 [ 0, %outer.header ], [ %inner.iv.next, %inner ]\n %gep.C = getelementptr inbounds double, ptr %C, i32 %inner.iv\n %l = load double, ptr %arrayidx.us, align 8\n store double %l, ptr %gep.C, align 8\n %inner.iv.next = add i32 %inner.iv, 1\n %inner.c = icmp eq i32 %inner.iv.next, 1000\n br i1 %inner.c, label %outer.latch, label %inner\n\nouter.latch: ; preds = %inner\n %outer.iv.next = add i32 %outer.iv, 1\n %outer.c = icmp ult i32 %outer.iv, 128\n br i1 %outer.c, label %exit, label %outer.header\n\nexit: ; preds = %outer.latch, %entry\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/scev-predicate-reasoning.ll", "commands": [ "opt -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -lv-strided-pointer-ivs=true -S %s" ], "tests": [ { "test_name": "step_direction_unknown", "test_body": "define void @step_direction_unknown(i32 %arg, ptr %dst) {\nentry:\n %add = add i32 %arg, 1\n br label %loop\n\nloop: ; preds = %loop, %entry\n %phi = phi i64 [ 0, %entry ], [ %add2, %loop ]\n %trunc = trunc i64 %phi to i32\n %mul = mul i32 %add, %trunc\n %zext = zext i32 %mul to i64\n %getelementptr = getelementptr double, ptr %dst, i64 %zext\n store double 0.000000e+00, ptr %getelementptr, align 8\n %add2 = add i64 %phi, 1\n %icmp = icmp eq i64 %add2, 1024\n br i1 %icmp, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "integer_induction_wraps_scev_predicate_known", "test_body": "define void @integer_induction_wraps_scev_predicate_known(i32 %x, ptr %call, ptr %start) {\nentry:\n %mul = shl i32 %x, 1\n br label %for.cond\n\nfor.cond: ; preds = %for.cond, %entry\n %iv = phi i32 [ 30, %entry ], [ %inc, %for.cond ]\n %p.0 = phi ptr [ %start, %entry ], [ %add.ptr, %for.cond ]\n %add.ptr = getelementptr i8, ptr %p.0, i32 %mul\n %arrayidx = getelementptr ptr, ptr %call, i32 %iv\n store ptr %p.0, ptr %arrayidx, align 4\n %inc = add i32 %iv, 1\n %tobool.not = icmp eq i32 %iv, 1024\n br i1 %tobool.not, label %for.end, label %for.cond\n\nfor.end: ; preds = %for.cond\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/vplan-sink-scalars-and-merge-vf1.ll", "commands": [ "opt -passes=loop-vectorize -force-vector-interleave=2 -force-vector-width=1 -debug -disable-output %s 2>&1" ], "tests": [ { "test_name": "sink_with_sideeffects", "test_body": "target datalayout = \"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128\"\n\ndefine void @sink_with_sideeffects(i1 %c, ptr %ptr) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.inc, %entry\n %tmp0 = phi i64 [ %tmp6, %for.inc ], [ 0, %entry ]\n %tmp1 = phi i64 [ %tmp7, %for.inc ], [ 1024, %entry ]\n %tmp2 = getelementptr i8, ptr %ptr, i64 %tmp0\n %tmp3 = load i8, ptr %tmp2, align 1\n store i8 0, ptr %tmp2, align 1\n %tmp4 = zext i8 %tmp3 to i32\n %tmp5 = trunc i32 %tmp4 to i8\n br i1 %c, label %if.then, label %for.inc\n\nif.then: ; preds = %for.body\n store i8 %tmp5, ptr %tmp2, align 1\n br label %for.inc\n\nfor.inc: ; preds = %if.then, %for.body\n %tmp6 = add nuw nsw i64 %tmp0, 1\n %tmp7 = add i64 %tmp1, -1\n %tmp8 = icmp eq i64 %tmp7, 0\n br i1 %tmp8, label %for.end, label %for.body\n\nfor.end: ; preds = %for.inc\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[LoopVectorizer] Assertion `EPResumeVal && \"must have a resume value for the canonical IV\"' failed.", "body": "clang -Wno-incompatible-pointer-types -O3 -march=z13 -S -c crash19.i -o a.out -w -mllvm -disable-licm-promotion -mllvm -epilogue-vectorization-force-VF=2 \n\n[crash19.tar.gz](https://github.com/user-attachments/files/18383534/crash19.tar.gz)\n\n#9 0x000002aa3ff5e440 preparePlanForEpilogueVectorLoop\n#12 0x000002aa3ffa098a llvm::LoopVectorizePass::run\n\n@bmahjour \n@fhahn ", "author": "JonPsson1", "labels": [ "vectorizers", "crash" ], "comments": [ { "author": "fhahn", "body": "@JonPsson1 Was the test case fuzzer generated? Just curious, because it had a loop with unsigned max as iteration count." }, { "author": "JonPsson1", "body": "> [@JonPsson1](https://github.com/JonPsson1) Was the test case fuzzer generated? Just curious, because it had a loop with unsigned max as iteration count.\n\nNo, it was a CSmith test case." }, { "author": "fhahn", "body": "@JonPsson1 Could you check if it fixes the full reproducer? If not, it would be great if you could share the full reproducer?" } ] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "f564a48f0ea4d2100c0cadfa6e6f20f97244025e", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 7481, 7487 ], [ 7492, 7506 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::buildTree_rec" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/minbitwidth-user-not-min.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu < %s" ], "tests": [ { "test_name": "test", "test_body": "define void @test(ptr %block, ptr noalias %pixels, i1 %b) {\nentry:\n %0 = load i16, ptr %block, align 2\n %tobool.not.i78 = icmp ult i16 %0, 0\n %conv.i80 = sext i1 true to i8\n %conv1.i81 = trunc i16 %0 to i8\n %retval.0.i82 = select i1 %tobool.not.i78, i8 %conv1.i81, i8 %conv.i80\n store i8 %retval.0.i82, ptr %pixels, align 1\n %arrayidx2 = getelementptr i8, ptr %block, i64 2\n %1 = load i16, ptr %arrayidx2, align 2\n %tobool.not.i73 = icmp ult i16 %1, 0\n %conv.i75 = sext i1 %b to i8\n %conv1.i76 = trunc i16 %1 to i8\n %retval.0.i77 = select i1 %tobool.not.i73, i8 %conv1.i76, i8 %conv.i75\n %arrayidx5 = getelementptr i8, ptr %pixels, i64 1\n store i8 %retval.0.i77, ptr %arrayidx5, align 1\n %arrayidx6 = getelementptr i8, ptr %block, i64 4\n %2 = load i16, ptr %arrayidx6, align 2\n %tobool.not.i68 = icmp ult i16 %2, 0\n %conv.i70 = sext i1 false to i8\n %conv1.i71 = trunc i16 %2 to i8\n %retval.0.i72 = select i1 %tobool.not.i68, i8 %conv1.i71, i8 %conv.i70\n %arrayidx9 = getelementptr i8, ptr %pixels, i64 2\n store i8 %retval.0.i72, ptr %arrayidx9, align 1\n %arrayidx10 = getelementptr i8, ptr %block, i64 6\n %3 = load i16, ptr %arrayidx10, align 2\n %tobool.not.i63 = icmp ult i16 %3, 0\n %conv.i65 = sext i1 false to i8\n %conv1.i66 = trunc i16 %3 to i8\n %retval.0.i67 = select i1 %tobool.not.i63, i8 %conv1.i66, i8 %conv.i65\n %arrayidx13 = getelementptr i8, ptr %pixels, i64 3\n store i8 %retval.0.i67, ptr %arrayidx13, align 1\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/SLPVectorizer/X86/trunc-node-reused.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu < %s" ], "tests": [ { "test_name": "test", "test_body": "define i16 @test() {\nentry:\n %conv73 = xor i64 0, 0\n %and.i = and i64 0, 0\n %xor2.i = or i64 %and.i, 0\n %sub.i = or i64 %xor2.i, 0\n %xor3.i = xor i64 %sub.i, %conv73\n %and4.i = and i64 %xor3.i, 0\n %cmp.i = icmp slt i64 %and4.i, 0\n %0 = trunc i64 %conv73 to i16\n %1 = or i16 0, %0\n %conv73i = xor i64 0, 0\n %andi.i = and i64 0, 0\n %xor2i.i = or i64 %andi.i, 0\n %subi.i = or i64 %xor2i.i, 0\n %xor3i.i = xor i64 %subi.i, %conv73i\n %and4i.i = and i64 %xor3i.i, 0\n %cmpi.i = icmp slt i64 %and4i.i, 0\n %2 = trunc i64 %conv73i to i16\n %3 = or i16 0, %2\n %4 = select i1 %cmpi.i, i16 0, i16 %3\n %5 = select i1 %cmp.i, i16 0, i16 %1\n %6 = zext i32 0 to i64\n %add.ip = or i64 %6, 0\n %orp = or i64 %add.ip, 0\n %conv72p = shl i64 %orp, 0\n %sextp = ashr i64 %conv72p, 0\n %conv73p = xor i64 %sextp, 0\n %and.ip = and i64 0, 0\n %xor2.ip = or i64 %and.ip, 0\n %sub.ip = or i64 %xor2.ip, 0\n %xor3.ip = xor i64 %sub.ip, %conv73p\n %and4.ip = and i64 %xor3.ip, 0\n %cmp.ip = icmp slt i64 %and4.ip, 0\n %7 = trunc i64 %conv73p to i16\n %8 = or i16 0, %7\n %9 = select i1 %cmp.ip, i16 0, i16 %8\n %conv76i = and i16 %4, %5\n %conv76p = and i16 %conv76i, %9\n %10 = zext i32 0 to i64\n %add.ip1 = or i64 %10, 0\n %orp1 = or i64 %add.ip1, 0\n %conv72p1 = shl i64 %orp1, 0\n %sextp1 = ashr i64 %conv72p1, 0\n %conv73p1 = xor i64 %sextp1, 0\n %and.ip1 = and i64 0, 0\n %xor2.ip1 = or i64 %and.ip1, 0\n %sub.ip1 = or i64 %xor2.ip1, 0\n %xor3.ip1 = xor i64 %sub.ip1, %conv73p1\n %and4.ip1 = and i64 %xor3.ip1, 0\n %cmp.ip1 = icmp slt i64 %and4.ip1, 0\n %11 = trunc i64 %conv73p1 to i16\n %12 = or i16 0, %11\n %13 = select i1 %cmp.ip1, i16 0, i16 %12\n %conv76p2 = and i16 %conv76p, %13\n ret i16 %conv76p2\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLPVectorizer] Assertion `OpIdx < Operands.size() && \"Off bounds\"' failed.", "body": "Reproducer: https://godbolt.org/z/8Es17cqcW\r\n```\r\n; bin/opt -passes=slp-vectorizer reduced.ll -S\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine i16 @main() {\r\nentry:\r\n %conv73.i.peel.i.i.i.i.i = xor i64 0, 0\r\n %and.i.i.peel.i.i.i.i.i = and i64 0, 0\r\n %xor2.i.i.peel.i.i.i.i.i = or i64 %and.i.i.peel.i.i.i.i.i, 0\r\n %sub.i.i.peel.i.i.i.i.i = or i64 %xor2.i.i.peel.i.i.i.i.i, 0\r\n %xor3.i.i.peel.i.i.i.i.i = xor i64 %sub.i.i.peel.i.i.i.i.i, %conv73.i.peel.i.i.i.i.i\r\n %and4.i.i.peel.i.i.i.i.i = and i64 %xor3.i.i.peel.i.i.i.i.i, 0\r\n %cmp.i.i.peel.i.i.i.i.i = icmp slt i64 %and4.i.i.peel.i.i.i.i.i, 0\r\n %0 = trunc i64 %conv73.i.peel.i.i.i.i.i to i16\r\n %1 = or i16 0, %0\r\n %conv73.i.i.i.i.i.i = xor i64 0, 0\r\n %and.i.i.i.i.i.i.i = and i64 0, 0\r\n %xor2.i.i.i.i.i.i.i = or i64 %and.i.i.i.i.i.i.i, 0\r\n %sub.i.i.i.i.i.i.i = or i64 %xor2.i.i.i.i.i.i.i, 0\r\n %xor3.i.i.i.i.i.i.i = xor i64 %sub.i.i.i.i.i.i.i, %conv73.i.i.i.i.i.i\r\n %and4.i.i.i.i.i.i.i = and i64 %xor3.i.i.i.i.i.i.i, 0\r\n %cmp.i.i.i.i.i.i.i = icmp slt i64 %and4.i.i.i.i.i.i.i, 0\r\n %2 = trunc i64 %conv73.i.i.i.i.i.i to i16\r\n %3 = or i16 0, %2\r\n %4 = select i1 %cmp.i.i.i.i.i.i.i, i16 0, i16 %3\r\n %5 = select i1 %cmp.i.i.peel.i.i.i.i.i, i16 0, i16 %1\r\n %6 = zext i32 0 to i64\r\n %add.i.i.peel.i369.i.i.i.i = or i64 %6, 0\r\n %or.i.peel.i371.i.i.i.i = or i64 %add.i.i.peel.i369.i.i.i.i, 0\r\n %conv72.i.peel.i372.i.i.i.i = shl i64 %or.i.peel.i371.i.i.i.i, 0\r\n %sext.i.peel.i373.i.i.i.i = ashr i64 %conv72.i.peel.i372.i.i.i.i, 0\r\n %conv73.i.peel.i374.i.i.i.i = xor i64 %sext.i.peel.i373.i.i.i.i, 0\r\n %and.i.i.peel.i376.i.i.i.i = and i64 0, 0\r\n %xor2.i.i.peel.i377.i.i.i.i = or i64 %and.i.i.peel.i376.i.i.i.i, 0\r\n %sub.i.i.peel.i378.i.i.i.i = or i64 %xor2.i.i.peel.i377.i.i.i.i, 0\r\n %xor3.i.i.peel.i379.i.i.i.i = xor i64 %sub.i.i.peel.i378.i.i.i.i, %conv73.i.peel.i374.i.i.i.i\r\n %and4.i.i.peel.i380.i.i.i.i = and i64 %xor3.i.i.peel.i379.i.i.i.i, 0\r\n %cmp.i.i.peel.i381.i.i.i.i = icmp slt i64 %and4.i.i.peel.i380.i.i.i.i, 0\r\n %7 = trunc i64 %conv73.i.peel.i374.i.i.i.i to i16\r\n %8 = or i16 0, %7\r\n %9 = select i1 %cmp.i.i.peel.i381.i.i.i.i, i16 0, i16 %8\r\n %conv76.i.i.i.i.i.i = and i16 %4, %5\r\n %conv76.i.peel.i384.i.i.i.i = and i16 %conv76.i.i.i.i.i.i, %9\r\n %10 = zext i32 0 to i64\r\n %add.i.i.peel.i417.i.i.i.i = or i64 %10, 0\r\n %or.i.peel.i419.i.i.i.i = or i64 %add.i.i.peel.i417.i.i.i.i, 0\r\n %conv72.i.peel.i420.i.i.i.i = shl i64 %or.i.peel.i419.i.i.i.i, 0\r\n %sext.i.peel.i421.i.i.i.i = ashr i64 %conv72.i.peel.i420.i.i.i.i, 0\r\n %conv73.i.peel.i422.i.i.i.i = xor i64 %sext.i.peel.i421.i.i.i.i, 0\r\n %and.i.i.peel.i424.i.i.i.i = and i64 0, 0\r\n %xor2.i.i.peel.i425.i.i.i.i = or i64 %and.i.i.peel.i424.i.i.i.i, 0\r\n %sub.i.i.peel.i426.i.i.i.i = or i64 %xor2.i.i.peel.i425.i.i.i.i, 0\r\n %xor3.i.i.peel.i427.i.i.i.i = xor i64 %sub.i.i.peel.i426.i.i.i.i, %conv73.i.peel.i422.i.i.i.i\r\n %and4.i.i.peel.i428.i.i.i.i = and i64 %xor3.i.i.peel.i427.i.i.i.i, 0\r\n %cmp.i.i.peel.i429.i.i.i.i = icmp slt i64 %and4.i.i.peel.i428.i.i.i.i, 0\r\n %11 = trunc i64 %conv73.i.peel.i422.i.i.i.i to i16\r\n %12 = or i16 0, %11\r\n %13 = select i1 %cmp.i.i.peel.i429.i.i.i.i, i16 0, i16 %12\r\n %conv76.i.peel.i432.i.i.i.i = and i16 %conv76.i.peel.i384.i.i.i.i, %13\r\n ret i16 %conv76.i.peel.i432.i.i.i.i\r\n}\r\n```\r\n```\r\nopt: /root/llvm-project/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:3180: llvm::slpvectorizer::BoUpSLP::ValueList& llvm::slpvectorizer::BoUpSLP::TreeEntry::getOperand(unsigned int): Assertion `OpIdx < Operands.size() && \"Off bounds\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S --passes=slp-vectorizer <source>\r\n1.\tRunning pass \"function(slp-vectorizer)\" on module \"<source>\"\r\n2.\tRunning pass \"slp-vectorizer\" on function \"main\"\r\n #0 0x0000000005016bb8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x5016bb8)\r\n #1 0x00000000050142fc SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007955e2242520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x00007955e22969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x00007955e2242476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x00007955e22287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x00007955e222871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\r\n #7 0x00007955e2239e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n #8 0x000000000406f2b8 llvm::slpvectorizer::BoUpSLP::TreeEntry::getOperand(unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x406f2b8)\r\n #9 0x00000000040f675e llvm::slpvectorizer::BoUpSLP::getEntryCost(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::ArrayRef<llvm::Value*>, llvm::SmallPtrSetImpl<llvm::Value*>&)::'lambda0'(llvm::function_ref<llvm::InstructionCost (unsigned int)>, llvm::function_ref<llvm::InstructionCost (llvm::InstructionCost)>)::operator()(llvm::function_ref<llvm::InstructionCost (unsigned int)>, llvm::function_ref<llvm::InstructionCost (llvm::InstructionCost)>) const SLPVectorizer.cpp:0:0\r\n#10 0x00000000040f74aa llvm::slpvectorizer::BoUpSLP::getEntryCost(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::ArrayRef<llvm::Value*>, llvm::SmallPtrSetImpl<llvm::Value*>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x40f74aa)\r\n#11 0x0000000004114641 llvm::slpvectorizer::BoUpSLP::getTreeCost(llvm::ArrayRef<llvm::Value*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4114641)\r\n#12 0x00000000041198c8 (anonymous namespace)::HorizontalReduction::tryToReduce(llvm::slpvectorizer::BoUpSLP&, llvm::DataLayout const&, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo const&) SLPVectorizer.cpp:0:0\r\n#13 0x000000000411bfe1 llvm::SLPVectorizerPass::vectorizeHorReduction(llvm::PHINode*, llvm::Instruction*, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&, llvm::TargetTransformInfo*, llvm::SmallVectorImpl<llvm::WeakTrackingVH>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x411bfe1)\r\n#14 0x0000000004120876 llvm::SLPVectorizerPass::vectorizeRootInstruction(llvm::PHINode*, llvm::Instruction*, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&, llvm::TargetTransformInfo*) (.constprop.0) SLPVectorizer.cpp:0:0\r\n#15 0x0000000004124e16 llvm::SLPVectorizerPass::vectorizeChainsInBlock(llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4124e16)\r\n#16 0x000000000412b2e1 llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0\r\n#17 0x000000000412bf6b llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x412bf6b)\r\n#18 0x0000000002f0034e llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2f0034e)\r\n#19 0x0000000004e18ff8 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e18ff8)\r\n#20 0x0000000000e06a0e llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe06a0e)\r\n#21 0x0000000004e17a1e llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e17a1e)\r\n#22 0x0000000000e0621e llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe0621e)\r\n#23 0x0000000004e17450 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e17450)\r\n#24 0x00000000008fce52 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8fce52)\r\n#25 0x00000000008efcdc optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8efcdc)\r\n#26 0x00007955e2229d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#27 0x00007955e2229e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#28 0x00000000008e77ae _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8e77ae)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139\r\n```", "author": "dtcxzyw", "labels": [ "llvm:SLPVectorizer", "crash-on-valid" ], "comments": [] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "c05599966cd594c15834378f57669719d221c4d4", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": [ [ 2673, 2680 ] ], "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": [ "InstCombinerImpl::visitCallInst" ], "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/copysign.ll", "commands": [ "opt -S -passes=instcombine < %s" ], "tests": [ { "test_name": "copysign_sign_arg_mixed", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare float @llvm.copysign.f32(float, float) #0\n\ndefine float @copysign_sign_arg_mixed(float %x, float %y, float %z) {\n %s = call ninf nsz float @llvm.copysign.f32(float %y, float %z)\n %r = call nnan nsz float @llvm.copysign.f32(float %x, float %s)\n ret float %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "copysign_sign_arg", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare float @llvm.copysign.f32(float, float) #0\n\ndefine float @copysign_sign_arg(float %x, float %y, float %z) {\n %s = call float @llvm.copysign.f32(float %y, float %z)\n %r = call ninf float @llvm.copysign.f32(float %x, float %s)\n ret float %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "fneg_mag", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare float @llvm.copysign.f32(float, float) #0\n\ndefine float @fneg_mag(float %x, float %y) {\n %n = fneg float %x\n %r = call float @llvm.copysign.f32(float %n, float %y)\n ret float %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "copysign_sign_arg_nnan", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare float @llvm.copysign.f32(float, float) #0\n\ndefine float @copysign_sign_arg_nnan(float %x, float %y, float %z) {\n %s = call nnan float @llvm.copysign.f32(float %y, float %z)\n %r = call nnan float @llvm.copysign.f32(float %x, float %s)\n ret float %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_known_positive_sign_arg", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare float @llvm.copysign.f32(float, float) #0\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare float @llvm.maxnum.f32(float, float) #0\n\ndefine float @not_known_positive_sign_arg(float %x, float %y) {\n %max = call float @llvm.maxnum.f32(float %x, float 0.000000e+00)\n %r = call ninf float @llvm.copysign.f32(float %y, float %max)\n ret float %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] FMF flags should not be propagated", "body": "Alive2: https://alive2.llvm.org/ce/z/ajCxTh\n```\ndefine float @src1(float noundef %x, float noundef %y, float noundef %z) {\n %s = call float @llvm.copysign.f32(float %y, float %z)\n %r = call nnan float @llvm.copysign.f32(float %x, float %s)\n ret float %r\n}\n\ndefine float @tgt1(float noundef %x, float noundef %y, float noundef %z) {\n %r = call nnan float @llvm.copysign.f32(float %x, float %z)\n ret float %r\n}\n\ndefine float @src2(float noundef %x, float noundef %y, float noundef %z) {\n %s = call float @llvm.copysign.f32(float %y, float %z)\n %r = call ninf float @llvm.copysign.f32(float %x, float %s)\n ret float %r\n}\n\ndefine float @tgt2(float noundef %x, float noundef %y, float noundef %z) {\n %r = call ninf float @llvm.copysign.f32(float %x, float %z)\n ret float %r\n}\n\ndefine float @src3(float noundef %x, float noundef %y, float noundef %z) {\n %s = call float @llvm.copysign.f32(float %y, float %z)\n %r = call nsz float @llvm.copysign.f32(float %x, float %s)\n ret float %r\n}\n\ndefine float @tgt3(float noundef %x, float noundef %y, float noundef %z) {\n %r = call nsz float @llvm.copysign.f32(float %x, float %z)\n ret float %r\n}\n```\n", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:instcombine", "floating-point" ], "comments": [] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "18311093abe6481388a0d963d58438d743b47569", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": [ [ 2902, 2909 ] ], "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": [ "InstCombinerImpl::visitShuffleVectorInst" ], "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/vec_shuffle.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "foldselect0", "test_body": "define <2 x i32> @foldselect0(i1 %c) {\n %sel = select i1 %c, <2 x i32> <i32 42, i32 7>, <2 x i32> <i32 0, i32 1>\n %shuf = shufflevector <2 x i32> %sel, <2 x i32> poison, <2 x i32> <i32 1, i32 0>\n ret <2 x i32> %shuf\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "shuf_larger_length_vec_select", "test_body": "define <4 x float> @shuf_larger_length_vec_select(<2 x i1> %cond) {\n %sel = select <2 x i1> %cond, <2 x float> zeroinitializer, <2 x float> splat (float 1.000000e+00)\n %shuf = shufflevector <2 x float> %sel, <2 x float> zeroinitializer, <4 x i32> <i32 0, i32 1, i32 2, i32 3>\n ret <4 x float> %shuf\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "shuf_same_length_vec_select", "test_body": "define <4 x i32> @shuf_same_length_vec_select(<4 x i1> %cond) {\n %sel = select <4 x i1> %cond, <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32> <i32 4, i32 5, i32 6, i32 7>\n %shuf = shufflevector <4 x i32> %sel, <4 x i32> <i32 8, i32 9, i32 10, i32 11>, <4 x i32> <i32 2, i32 1, i32 3, i32 5>\n ret <4 x i32> %shuf\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] Assertion `!areInvalidOperands(C, S1, S2) && \"Invalid operands for select\"' failed.", "body": "Reproducer: \r\n```\r\n; bin/opt -passes=instcombine reduced.ll -S\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\r\ntarget triple = \"x86_64-pc-linux-gnu\"\r\n\r\ndefine <32 x float> @process(<8 x i1> %0) {\r\n %3 = select <8 x i1> %0, <8 x float> zeroinitializer, <8 x float> <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00>\r\n %4 = shufflevector <8 x float> %3, <8 x float> zeroinitializer, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>\r\n %5 = shufflevector <16 x float> %4, <16 x float> zeroinitializer, <32 x i32> <i32 0, i32 8, i32 16, i32 24, i32 1, i32 9, i32 17, i32 25, i32 2, i32 10, i32 18, i32 26, i32 3, i32 11, i32 19, i32 27, i32 4, i32 12, i32 20, i32 28, i32 5, i32 13, i32 21, i32 29, i32 6, i32 14, i32 22, i32 30, i32 7, i32 15, i32 23, i32 31>\r\n ret <32 x float> %5\r\n}\r\n```\r\n```\r\nopt: /home/dtcxzyw/WorkSpace/Projects/compilers/llvm-project/llvm/include/llvm/IR/Instructions.h:1614: void llvm::SelectInst::init(llvm::Value*, llvm::Value*, llvm::Value*): Assertion `!areInvalidOperands(C, S1, S2) && \"Invalid operands for select\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0. Program arguments: bin/opt -passes=instcombine reduced.ll\r\n1. Running pass \"function(instcombine<max-iterations=1;verify-fixpoint>)\" on module \"reduced.ll\"\r\n2. Running pass \"instcombine<max-iterations=1;verify-fixpoint>\" on function \"process\"\r\n #0 0x00007ffff7e15b02 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/libLLVMSupport.so.20.0git+0x215b02)\r\n #1 0x00007ffff7e129af llvm::sys::RunSignalHandlers() (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/libLLVMSupport.so.20.0git+0x2129af)\r\n #2 0x00007ffff7e12af5 SignalHandler(int) Signals.cpp:0:0\r\n #3 0x00007ffff7842520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #4 0x00007ffff78969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76\r\n #5 0x00007ffff78969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10\r\n #6 0x00007ffff78969fc pthread_kill ./nptl/pthread_kill.c:89:10\r\n #7 0x00007ffff7842476 gsignal ./signal/../sysdeps/posix/raise.c:27:6\r\n #8 0x00007ffff78287f3 abort ./stdlib/abort.c:81:7\r\n #9 0x00007ffff782871b _nl_load_domain ./intl/loadmsgcat.c:1177:9\r\n#10 0x00007ffff7839e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n#11 0x00007ffff1272963 llvm::InstCombinerImpl::FoldOpIntoSelect(llvm::Instruction&, llvm::SelectInst*, bool) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMInstCombine.so.20.0git+0x60963)\r\n#12 0x00007ffff13a09d1 llvm::InstCombinerImpl::visitShuffleVectorInst(llvm::ShuffleVectorInst&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMInstCombine.so.20.0git+0x18e9d1)\r\n#13 0x00007ffff1275da8 llvm::InstCombinerImpl::run() (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMInstCombine.so.20.0git+0x63da8)\r\n#14 0x00007ffff1276f09 combineInstructionsOverFunction(llvm::Function&, llvm::InstructionWorklist&, llvm::AAResults*, llvm::AssumptionCache&, llvm::TargetLibraryInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::OptimizationRemarkEmitter&, llvm::BlockFrequencyInfo*, llvm::BranchProbabilityInfo*, llvm::ProfileSummaryInfo*, llvm::InstCombineOptions const&) InstructionCombining.cpp:0:0\r\n#15 0x00007ffff1277dfb llvm::InstCombinePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMInstCombine.so.20.0git+0x65dfb)\r\n#16 0x00007ffff30d9955 llvm::detail::PassModel<llvm::Function, llvm::InstCombinePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMPasses.so.20.0git+0xd9955)\r\n#17 0x00007ffff01678bd llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMCore.so.20.0git+0x3678bd)\r\n#18 0x00007ffff68d9e65 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMX86CodeGen.so.20.0git+0xd9e65)\r\n#19 0x00007ffff01659f6 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMCore.so.20.0git+0x3659f6)\r\n#20 0x00007ffff68da825 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMX86CodeGen.so.20.0git+0xda825)\r\n#21 0x00007ffff016657a llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMCore.so.20.0git+0x36657a)\r\n#22 0x00007ffff7f95051 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/libLLVMOptDriver.so.20.0git+0x2d051)\r\n#23 0x00007ffff7fa073f optMain (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/libLLVMOptDriver.so.20.0git+0x3873f)\r\n#24 0x00007ffff7829d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16\r\n#25 0x00007ffff7829e40 call_init ./csu/../csu/libc-start.c:128:20\r\n#26 0x00007ffff7829e40 __libc_start_main ./csu/../csu/libc-start.c:379:5\r\n#27 0x0000555555555095 _start (bin/opt+0x1095)\r\nAborted (core dumped)\r\n```\r\n\r\nIt is caused by https://github.com/llvm/llvm-project/pull/113746. We cannot do this fold if the output and input operands don't have the exact same type. It was reported by llvm-opt-benchmark pre-commit test https://github.com/dtcxzyw/llvm-opt-benchmark/pull/1543. I am sorry I didn't notice about this. Fortunately this issue was captured by a post-commit test https://github.com/dtcxzyw/llvm-opt-benchmark/issues/1560.\r\n\r\ncc @MatzeB @RKSimon @goldsteinn \r\n\r\nI will post a fix later.\r\n\r\n\r\n", "author": "dtcxzyw", "labels": [ "llvm:instcombine", "crash-on-valid" ], "comments": [] }

[ "llvm/test/Transforms/LowerSwitch" ]

{ "fix_commit": "67aec0cd62d607b4e5b7198769be061454ce67b3", "components": [ "LowerSwitch" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": [ [ 208, 214 ] ], "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": [ "NewLeafBlock" ], "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LowerSwitch/93152.ll", "commands": [ "opt < %s -passes=lower-switch -S" ], "tests": [ { "test_name": "<module>", "test_body": "define void @i3_range_4(i3 %0) {\n;\nbb.0:\n switch i3 %0, label %bb.2 [\n i3 -1, label %bb.1\n i3 -2, label %bb.1\n i3 2, label %bb.1\n i3 1, label %bb.1\n i3 0, label %bb.1\n ]\n\nbb.1: ; preds = %bb.0, %bb.0, %bb.0, %bb.0, %bb.0\n %tmp = phi i3 [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ]\n br label %bb.2\n\nbb.2: ; preds = %bb.1, %bb.0\n ret void\n}\n\ndefine void @i3_range_6(i3 %0) {\n;\nbb.0:\n switch i3 %0, label %bb.2 [\n i3 -1, label %bb.1\n i3 -2, label %bb.1\n i3 -3, label %bb.1\n i3 3, label %bb.1\n i3 2, label %bb.1\n i3 1, label %bb.1\n i3 0, label %bb.1\n ]\n\nbb.1: ; preds = %bb.0, %bb.0, %bb.0, %bb.0, %bb.0\n %tmp = phi i3 [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ]\n br label %bb.2\n\nbb.2: ; preds = %bb.1, %bb.0\n ret void\n}\n\n\ndefine void @i3_range_7(i3 %0) {\n;\nbb.0:\n switch i3 %0, label %bb.2 [\n i3 -1, label %bb.1\n i3 -2, label %bb.1\n i3 -3, label %bb.1\n i3 -4, label %bb.1\n i3 3, label %bb.1\n i3 2, label %bb.1\n i3 1, label %bb.1\n i3 0, label %bb.1\n ]\n\nbb.1: ; preds = %bb.0, %bb.0, %bb.0, %bb.0, %bb.0\n %tmp = phi i3 [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ]\n br label %bb.2\n\nbb.2: ; preds = %bb.1, %bb.0\n ret void\n}", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "LLVM ERROR: Broken function found after pass \"LowerSwitchPass\", compilation aborted!", "body": "llvm commit: 4cc6d0f4dfb26d\r\nReproduce with:\r\n```opt -passes=\"lower-switch\" -verify-each bbi-95731.ll -o /dev/null```\r\nResult:\r\n```\r\nPHINode should have one entry for each predecessor of its parent basic block!\r\n %tmp = phi i3 [ 0, %LeafBlock ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ]\r\nLLVM ERROR: Broken function found after pass \"LowerSwitchPass\", compilation aborted!\r\n```\r\nIf we look at what lower-switch actually produces (-print-after-all) we see\r\n```\r\n; *** IR Dump After LowerSwitchPass on v_257_0 ***\r\ndefine void @v_257_0(i3 %0) {\r\nbb.0:\r\n br label %LeafBlock\r\n\r\nLeafBlock: ; preds = %bb.0\r\n %.off = add i3 %0, 2\r\n %SwitchLeaf = icmp ule i3 %.off, -4\r\n br i1 %SwitchLeaf, label %bb.1, label %bb.2\r\n\r\nbb.1: ; preds = %LeafBlock\r\n %tmp = phi i3 [ 0, %LeafBlock ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ]\r\n br label %bb.2\r\n\r\nbb.2: ; preds = %LeafBlock, %bb.1\r\n ret void\r\n}\r\nPHINode should have one entry for each predecessor of its parent basic block!\r\n %tmp = phi i3 [ 0, %LeafBlock ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ]\r\n```\r\nSo it has removed the switch instruction but it only updated one of the five phi operands for %bb.0.\r\nThe input looked like\r\n```\r\ndefine void @v_257_0(i3 %0) {\r\nbb.0:\r\n switch i3 %0, label %bb.2 [\r\n i3 -1, label %bb.1\r\n i3 -2, label %bb.1\r\n i3 2, label %bb.1\r\n i3 1, label %bb.1\r\n i3 0, label %bb.1\r\n ]\r\n\r\nbb.1: ; preds = %bb.0, %bb.0, %bb.0, %bb.0, %bb.0\r\n %tmp = phi i3 [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ], [ 0, %bb.0 ]\r\n br label %bb.2\r\n\r\nbb.2: ; preds = %bb.1, %bb.0\r\n ret void\r\n}\r\n```\r\nSo there is one phi operand for each of the values that makes it jump from %bb.0 to %bb.1 and lower-switch only updated one of them when it changed things.\r\n[bbi-95731.ll.gz](https://github.com/llvm/llvm-project/files/15414163/bbi-95731.ll.gz)\r\n", "author": "mikaelholmen", "labels": [ "crash-on-valid", "llvm:transforms" ], "comments": [ { "author": "mikaelholmen", "body": "This starts happening with 1db51d8eb2d\r\n```\r\n[Transform] Rewrite LowerSwitch using APInt\r\n\r\nThis rewrite fixes https://github.com/llvm/llvm-project/issues/59316.\r\n\r\nPreviously LowerSwitch uses int64_t, which will crash on case branches using integers with more than 64 bits.\r\nUsing APInt fixes this problem. This patch also includes a test\r\n\r\nReviewed By: RKSimon\r\n\r\nDifferential Revision: https://reviews.llvm.org/D140747\r\n```" }, { "author": "DataCorrupted", "body": "I am taking a look. Some initial thoughts:\r\n\r\n- https://github.com/llvm/llvm-project/commit/1db51d8eb2d220a4f0000555ada310990098cf5b didn't attempt to change how it optimizes the switch. Maybe we forgot to change the API in that optimization.\r\n- `i3` is playing a role here: if you switch it to `i32`, [it'll pass](https://godbolt.org/z/c5Yveb8Kf). " }, { "author": "DataCorrupted", "body": "I found the problem. Fixing it now. Will push a patch shortly" } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "4d2ae88d1617a910ec3a1436ce53579523ac2f97", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": [ [ 419, 424 ], [ 426, 431 ], [ 471, 478 ] ], "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": [ "InstCombinerImpl::visitExtractElementInst" ], "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/scalarization.ll", "commands": [ "opt -passes=instcombine -S < %s" ], "tests": [ { "test_name": "extract_element_binop_splat_variable_index_may_trap", "test_body": "define i8 @extract_element_binop_splat_variable_index_may_trap(<4 x i8> %x, <4 x i8> %y, i32 %z) {\n %b = sdiv <4 x i8> splat (i8 42), %y\n %r = extractelement <4 x i8> %b, i32 %z\n ret i8 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "extract_element_binop_splat_variable_index", "test_body": "define i8 @extract_element_binop_splat_variable_index(<4 x i8> %x, i32 %y) {\n %b = sdiv <4 x i8> %x, splat (i8 42)\n %r = extractelement <4 x i8> %b, i32 %y\n ret i8 %r\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Wrong swap between `sdiv` and `extractelement` by InstCombine", "body": "https://alive2.llvm.org/ce/z/mGNeLx\r\n\r\n\r\n```ll\r\n----------------------------------------\r\ndefine i8 @fun0(<4 x i8> %val0, i32 %val1) {\r\n#0:\r\n %val2 = sdiv <4 x i8> { 42, 42, 42, 42 }, %val0\r\n %val3 = extractelement <4 x i8> %val2, i32 %val1\r\n ret i8 %val3\r\n}\r\n=>\r\ndefine i8 @fun0(<4 x i8> %val0, i32 %val1) {\r\n#0:\r\n %#1 = extractelement <4 x i8> %val0, i32 %val1\r\n %val3 = sdiv i8 42, %#1\r\n ret i8 %val3\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Source is more defined than target\r\n\r\nExample:\r\n<4 x i8> %val0 = < #x01 (1), #x08 (8), #x02 (2), #x04 (4) >\r\ni32 %val1 = #x20000000 (536870912)\r\n\r\nSource:\r\n<4 x i8> %val2 = < #x2a (42), #x05 (5), #x15 (21), #x0a (10) >\r\ni8 %val3 = poison\r\n\r\nTarget:\r\ni8 %#1 = poison\r\ni8 %val3 = UB triggered!\r\n\r\n\r\nSummary:\r\n 0 correct transformations\r\n 1 incorrect transformations\r\n 0 failed-to-prove transformations\r\n 0 Alive2 errors\r\n```\r\n\r\n\r\n`sdiv` and `extractelement` cannot be swapped for vector operands as it can trigger UB, diving an integer by `poison`.", "author": "bongjunj", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "9725595f3acc0c1aaa354e15ac4ee2b1f8ff4cc9", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": [ [ 834, 841 ] ], "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": [ "InstCombinerImpl::foldGEPICmp" ], "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/opaque-ptr.ll", "commands": [ "opt -S -passes='instcombine<no-verify-fixpoint>' < %s" ], "tests": [ { "test_name": "cmp_gep_same_base_same_type_nusw", "test_body": "target datalayout = \"p:8:8:8\"\ndefine i1 @cmp_gep_same_base_same_type_nusw(ptr %ptr, i8%idx1, i8%idx2) {\n %gep1 = getelementptr nusw i32, ptr %ptr, i8%idx1\n %gep2 = getelementptr nusw i32, ptr %ptr, i8%idx2\n %cmp = icmp eq ptr %gep1, %gep2\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "cmp_gep_same_base_same_type_maywrap", "test_body": "target datalayout = \"p:8:8:8\"\ndefine i1 @cmp_gep_same_base_same_type_maywrap(ptr %ptr, i8%idx1, i8%idx2) {\n %gep1 = getelementptr i32, ptr %ptr, i8%idx1\n %gep2 = getelementptr i32, ptr %ptr, i8%idx2\n %cmp = icmp eq ptr %gep1, %gep2\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "cmp_gep_same_base_same_type_nuw", "test_body": "target datalayout = \"p:8:8:8\"\ndefine i1 @cmp_gep_same_base_same_type_nuw(ptr %ptr, i8%idx1, i8%idx2) {\n %gep1 = getelementptr nuw i32, ptr %ptr, i8%idx1\n %gep2 = getelementptr nuw i32, ptr %ptr, i8%idx2\n %cmp = icmp eq ptr %gep1, %gep2\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "cmp_gep_same_base_different_type", "test_body": "target datalayout = \"p:8:8:8\"\ndefine i1 @cmp_gep_same_base_different_type(ptr %ptr, i8%idx1, i8%idx2) {\n %gep1 = getelementptr inbounds i32, ptr %ptr, i8%idx1\n %gep2 = getelementptr inbounds i64, ptr %ptr, i8%idx2\n %cmp = icmp ult ptr %gep1, %gep2\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "cmp_gep_same_base_same_type", "test_body": "target datalayout = \"p:8:8:8\"\ndefine i1 @cmp_gep_same_base_same_type(ptr %ptr, i8%idx1, i8%idx2) {\n %gep1 = getelementptr inbounds i32, ptr %ptr, i8%idx1\n %gep2 = getelementptr inbounds i32, ptr %ptr, i8%idx2\n %cmp = icmp ult ptr %gep1, %gep2\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] Missing flag check when folding comparison of geps with the same base pointer", "body": "Alive2: https://alive2.llvm.org/ce/z/P5XbMx\n```\n\n----------------------------------------\ndefine i1 @src(ptr %ptr, i8 %idx1, i8 %idx2) {\n#0:\n %gep1 = gep ptr %ptr, 4 x i8 %idx1\n %gep2 = gep ptr %ptr, 4 x i8 %idx2\n %cmp = icmp eq ptr %gep1, %gep2, offsetonly\n ret i1 %cmp\n}\n=>\ndefine i1 @tgt(ptr %ptr, i8 %idx1, i8 %idx2) {\n#0:\n %cmp = icmp eq i8 %idx1, %idx2\n ret i1 %cmp\n}\nTransformation doesn't verify!\n\nERROR: Value mismatch\n\nExample:\nptr %ptr = null\ni8 %idx1 = #x00 (0)\ni8 %idx2 = #x40 (64)\n\nSource:\nptr %gep1 = null\nptr %gep2 = null\ni1 %cmp = #x1 (1)\n\nSOURCE MEMORY STATE\n===================\nNON-LOCAL BLOCKS:\nBlock 0 >\tsize: 0\talign: 1\talloc type: 0\talive: false\taddress: 0\nBlock 1 >\tsize: 0\talign: 1\talloc type: 0\talive: true\taddress: 1\n\nTarget:\ni1 %cmp = #x0 (0)\nSource value: #x1 (1)\nTarget value: #x0 (0)\n\n\n----------------------------------------\ndefine i1 @src1(ptr %ptr, i8 %idx1, i8 %idx2) {\n#0:\n %gep1 = gep nuw ptr %ptr, 4 x i8 %idx1\n %gep2 = gep nuw ptr %ptr, 4 x i8 %idx2\n %cmp = icmp eq ptr %gep1, %gep2, offsetonly\n ret i1 %cmp\n}\n=>\ndefine i1 @tgt1(ptr %ptr, i8 %idx1, i8 %idx2) {\n#0:\n %cmp = icmp eq i8 %idx1, %idx2\n ret i1 %cmp\n}\nTransformation seems to be correct!\n\n\n----------------------------------------\ndefine i1 @src2(ptr %ptr, i8 %idx1, i8 %idx2) {\n#0:\n %gep1 = gep nusw ptr %ptr, 4 x i8 %idx1\n %gep2 = gep nusw ptr %ptr, 4 x i8 %idx2\n %cmp = icmp eq ptr %gep1, %gep2, offsetonly\n ret i1 %cmp\n}\n=>\ndefine i1 @tgt2(ptr %ptr, i8 %idx1, i8 %idx2) {\n#0:\n %cmp = icmp eq i8 %idx1, %idx2\n ret i1 %cmp\n}\nTransformation seems to be correct!\n\nSummary:\n 2 correct transformations\n 1 incorrect transformations\n 0 failed-to-prove transformations\n 0 Alive2 errors\n```", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:instcombine", "generated by fuzzer" ], "comments": [] }

[ "llvm/test/Analysis/ValueTracking" ]

{ "fix_commit": "c2fba023475fddb893eac29dc9f34dfbdb221cd5", "components": [ "ValueTracking" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": [ [ 593, 603 ], [ 610, 620 ], [ 1673, 1680 ], [ 1705, 1713 ] ], "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": [ "breakSelfRecursivePHI", "computeKnownBitsFromOperator" ], "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Analysis/ValueTracking/phi-known-bits.ll", "commands": [ "opt -O1 < %s -S" ], "tests": [ { "test_name": "issue_124275_wrong_br_direction", "test_body": "target datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\n@c = dso_local global i32 1, align 4\n@a = dso_local global i32 0, align 4\n@b = dso_local global i32 0, align 4\n\ndefine dso_local i32 @main() #0 {\nentry:\n %retval = alloca i32, align 4\n %d = alloca i32, align 4\n store i32 0, ptr %retval, align 4\n store i32 -1, ptr @a, align 4\n %0 = load i32, ptr @a, align 4\n %cmp = icmp ult i32 %0, 1\n br i1 %cmp, label %if.then, label %if.end\n\nif.then:\n br label %e\n\nif.end:\n %1 = load i32, ptr @c, align 4\n store i32 %1, ptr %d, align 4\n %2 = load i32, ptr %d, align 4\n %tobool = icmp ne i32 %2, 0\n br i1 %tobool, label %if.then1, label %if.end2\n\nif.then1:\n br label %e\n\ne:\n br label %if.end2\n\nif.end2:\n %3 = load i32, ptr %d, align 4\n %tobool3 = icmp ne i32 %3, 0\n br i1 %tobool3, label %if.end5, label %if.then4\n\nif.then4:\n unreachable\n\nif.end5:\n %4 = load i32, ptr @b, align 4\n %tobool6 = icmp ne i32 %4, 0\n br i1 %tobool6, label %if.then7, label %if.end8\n\nif.then7:\n br label %e\n\nif.end8:\n ret i32 0\n}\n\nattributes #0 = { noinline nounwind uwtable \"frame-pointer\"=\"all\" \"min-legal-vector-width\"=\"0\" \"no-trapping-math\"=\"true\" \"stack-protector-buffer-size\"=\"8\" \"target-cpu\"=\"x86-64\" \"target-features\"=\"+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87\" \"tune-cpu\"=\"generic\" }\n\n!llvm.module.flags = !{!0, !1, !2, !3, !4, !5}\n!llvm.ident = !{!6}\n\n!0 = !{i32 7, !\"Dwarf Version\", i32 4}\n!1 = !{i32 1, !\"wchar_size\", i32 4}\n!2 = !{i32 8, !\"PIC Level\", i32 2}\n!3 = !{i32 7, !\"PIE Level\", i32 2}\n!4 = !{i32 7, !\"uwtable\", i32 2}\n!5 = !{i32 7, !\"frame-pointer\", i32 2}\n!6 = !{!\"clang version 21.0.0git (https://github.com/llvm/llvm-project.git 5c3c0a8cec9205efba78583bd0b8a646270968a1)\"}\n", "additional_args": "-src-unroll=4 -tgt-unroll=4", "lli_expected_out": null } ] } ]

{ "title": "wrong code at -O1 and above on x86_64-linux-gnu", "body": "It appears to be a recent regression from 19.1.0. \n\nCompiler Explorer: https://godbolt.org/z/haMfGoo6h\n\n```\n[548] % clangtk -v\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git ddd2f57b29661f21308eec0400fa92a6d075b0c6)\nTarget: x86_64-unknown-linux-gnu\nThread model: posix\nInstalledDir: /local/home/suz/suz-local/software/local/clang-trunk/bin\nBuild config: +assertions\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/12\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/12\nCandidate multilib: .;@m64\nSelected multilib: .;@m64\nFound CUDA installation: /usr/local/cuda, version 12.1\n[549] % \n[549] % clangtk -O1 small.c\n[550] % ./a.out\nAborted\n[551] % \n[551] % cat small.c\nint printf(const char *, ...);\nunsigned a;\nint b, c = 1;\nint main() {\n int d;\n a = -1;\n if (a < 1)\n goto e;\n d = c;\n if (d) {\n e:;\n }\n if (!d)\n __builtin_abort();\n if (b)\n goto e;\n return 0;\n}\n```", "author": "zhendongsu", "labels": [ "miscompilation", "llvm:analysis" ], "comments": [ { "author": "zhendongsu", "body": "Another likely related test:\n```\n[552] % clangtk -v\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git ddd2f57b29661f21308eec0400fa92a6d075b0c6)\nTarget: x86_64-unknown-linux-gnu\nThread model: posix\nInstalledDir: /local/home/suz/suz-local/software/local/clang-trunk/bin\nBuild config: +assertions\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/12\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/12\nCandidate multilib: .;@m64\nSelected multilib: .;@m64\nFound CUDA installation: /usr/local/cuda, version 12.1\n[553] % \n[553] % clangtk -O0 small.c\n[554] % ./a.out\n[555] % \n[555] % clangtk -O1 small.c\n[556] % timeout -s 9 5 ./a.out\nKilled\n[557] % cat small.c\nint a, b;\nint main() {\n {\n int c;\n if (a && 0)\n goto d;\n }\n int e = -~b;\n if (e) {\n d:;\n }\n while (!e)\n goto d;\n return 0;\n}\n```" }, { "author": "antoniofrighetto", "body": "Reduced to:\n\n```llvm\n; opt -p instcombine small.ll\ndefine i32 @small(i32 noundef %0) {\n %2 = xor i32 %0, 1\n %3 = sub i32 0, %2\n %4 = icmp ne i32 %3, 0\n br i1 %4, label %5, label %6\n\n5: ; preds = %6, %1\n %.0 = phi i32 [ %.1, %6 ], [ %3, %1 ]\n br label %6\n\n6: ; preds = %5, %1\n %.1 = phi i32 [ %.0, %5 ], [ 0, %1 ]\n %7 = icmp ne i32 %.1, 0\n %8 = xor i1 %7, true\n br i1 %8, label %5, label %9\n\n9: ; preds = %6\n ret i32 0\n}\n```" }, { "author": "goldsteinn", "body": "Fix at: https://github.com/llvm/llvm-project/pull/124481" } ] }

[ "llvm/test/Transforms/DFAJumpThreading" ]

{ "fix_commit": "d4a38c8ff5c993e14c42895b51a47272fb03a857", "components": [ "DFAJumpThreading" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": [ [ 194, 200 ], [ 202, 207 ], [ 223, 254 ] ], "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": [ "unfold" ], "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/DFAJumpThreading/dfa-jump-threading-transform.ll", "commands": [ "opt -S -passes=dfa-jump-threading %s" ], "tests": [ { "test_name": "test2", "test_body": "define i32 @test2(i32 %init) {\nentry:\n %cmp = icmp eq i32 %init, 0\n %sel = select i1 %cmp, i32 0, i32 2\n br label %loop.1\n\nloop.1: ; preds = %loop.1.backedge, %entry\n %state.1 = phi i32 [ %sel, %entry ], [ %state.1.be2, %loop.1.backedge ]\n br label %loop.2\n\nloop.2: ; preds = %loop.2.backedge, %loop.1\n %state.2 = phi i32 [ %state.1, %loop.1 ], [ %state.2.be, %loop.2.backedge ]\n br label %loop.3\n\nloop.3: ; preds = %case2, %loop.2\n %state = phi i32 [ %state.2, %loop.2 ], [ 3, %case2 ]\n switch i32 %state, label %infloop.i [\n i32 2, label %case2\n i32 3, label %case3\n i32 4, label %case4\n i32 0, label %case0\n i32 1, label %case1\n ]\n\ncase2: ; preds = %loop.3\n br i1 %cmp, label %loop.3, label %loop.1.backedge\n\ncase3: ; preds = %loop.3\n br i1 %cmp, label %loop.2.backedge, label %case4\n\ncase4: ; preds = %case3, %loop.3\n br i1 %cmp, label %loop.2.backedge, label %loop.1.backedge\n\nloop.1.backedge: ; preds = %case4, %case2\n %state.1.be = phi i32 [ 2, %case4 ], [ 4, %case2 ]\n %state.1.be2 = select i1 %cmp, i32 1, i32 %state.1.be\n br label %loop.1\n\nloop.2.backedge: ; preds = %case4, %case3\n %state.2.be = phi i32 [ 3, %case4 ], [ 0, %case3 ]\n br label %loop.2\n\ncase0: ; preds = %loop.3\n br label %exit\n\ncase1: ; preds = %loop.3\n br label %exit\n\ninfloop.i: ; preds = %infloop.i, %loop.3\n br label %infloop.i\n\nexit: ; preds = %case1, %case0\n ret i32 0\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "pr106083_select_dead_uses", "test_body": "define void @pr106083_select_dead_uses(i1 %cmp1, i1 %not, ptr %p) {\nbb:\n %spec.select = select i1 %cmp1, i32 0, i32 1\n br label %.loopexit6\n\n.loopexit6: ; preds = %select.unfold, %bb\n br i1 %not, label %select.unfold, label %bb1\n\nbb1: ; preds = %.loopexit6\n %i = load i32, ptr %p, align 4\n %not2 = icmp eq i32 0, 0\n %spec.select7 = select i1 %not2, i32 %spec.select, i32 0\n br label %select.unfold\n\nselect.unfold: ; preds = %bb1, %.loopexit6\n %_2 = phi i32 [ 0, %.loopexit6 ], [ %spec.select7, %bb1 ]\n switch i32 %_2, label %bb2 [\n i32 0, label %.preheader.preheader\n i32 1, label %.loopexit6\n ]\n\n.preheader.preheader: ; preds = %select.unfold\n ret void\n\nbb2: ; preds = %select.unfold\n unreachable\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test1", "test_body": "define i32 @test1(i32 %num) {\nentry:\n br label %for.body\n\nfor.body: ; preds = %for.inc, %entry\n %count = phi i32 [ 0, %entry ], [ %inc, %for.inc ]\n %state = phi i32 [ 1, %entry ], [ %state.next, %for.inc ]\n switch i32 %state, label %for.inc [\n i32 1, label %case1\n i32 2, label %case2\n ]\n\ncase1: ; preds = %for.body\n br label %for.inc\n\ncase2: ; preds = %for.body\n %cmp = icmp eq i32 %count, 50\n %sel = select i1 %cmp, i32 1, i32 2\n br label %for.inc\n\nfor.inc: ; preds = %case2, %case1, %for.body\n %state.next = phi i32 [ %sel, %case2 ], [ 1, %for.body ], [ 2, %case1 ]\n %inc = add nsw i32 %count, 1\n %cmp.exit = icmp slt i32 %inc, %num\n br i1 %cmp.exit, label %for.body, label %for.end\n\nfor.end: ; preds = %for.inc\n ret i32 0\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "pr106083_invalidBBarg_fold", "test_body": "define void @pr106083_invalidBBarg_fold(i1 %cmp1, i1 %cmp2, i1 %not, ptr %d) {\nbb:\n %sel = select i1 %cmp1, i32 0, i32 1\n br label %BB1\n\nBB1: ; preds = %BB1.backedge, %BB7, %bb\n %i = phi i16 [ 0, %BB1.backedge ], [ 0, %bb ], [ 1, %BB7 ]\n br i1 %not, label %BB7, label %BB2\n\nBB2: ; preds = %BB1\n store i16 0, ptr %d, align 2\n %spec.select = select i1 %cmp2, i32 %sel, i32 0\n br label %BB7\n\nBB7: ; preds = %BB2, %BB1\n %d.promoted4 = phi i16 [ 0, %BB1 ], [ 1, %BB2 ]\n %_3 = phi i32 [ 0, %BB1 ], [ %spec.select, %BB2 ]\n switch i32 %_3, label %BB1.backedge [\n i32 0, label %BB1\n i32 1, label %BB8\n ]\n\nBB1.backedge: ; preds = %BB7\n br label %BB1\n\nBB8: ; preds = %BB7\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "pr78059_bitwidth", "test_body": "define void @pr78059_bitwidth() {\n.split.preheader:\n br label %.split\n\n.split: ; preds = %.split, %.split.preheader\n %0 = phi i128 [ 0, %.split.preheader ], [ -1, %.split ]\n switch i128 %0, label %end [\n i128 -1, label %end\n i128 0, label %.split\n ]\n\nend: ; preds = %.split, %.split\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[DFAJumpThreading] crash since b167ada", "body": "Seeing many assertions that go away if I revert b167ada \"[DFAJumpThreading] Rewrite the way paths are enumerated (#96127)\".\r\n\r\n```\r\nclang-20 -cc1 -triple s390x-unknown-linux-gnu -target-cpu z15 -O3 -w -mllvm -enable-dfa-jump-thread -o /dev/null -emit-llvm -x ir tc_dfa-jt_invalidbbarg.ll\r\n...\r\n10 0x000002aa0a73e544 (anonymous namespace)::DFAJumpThreading::run\r\n...\r\n```\r\n\r\n```\r\nclang-20 -cc1 -triple s390x-unknown-linux-gnu -target-cpu z16 -O3 -w -mllvm -enable-dfa-jump-thread -o /dev/null -emit-llvm -x ir tc_select_mustbedeadnow.ll\r\n...\r\n#10 0x000002aa1b0c0968 llvm::DFAJumpThreadingPass::run\r\n...\r\n\r\n```\r\n[tcs_dfa-jt.tar.gz](https://github.com/user-attachments/files/16750050/tcs_dfa-jt.tar.gz)\r\n", "author": "JonPsson1", "labels": [ "crash", "llvm:transforms" ], "comments": [ { "author": "mikaelholmen", "body": "Perhaps the same assertion I reported here:\r\n https://github.com/llvm/llvm-project/pull/96127#issuecomment-2303862037\r\n?" }, { "author": "JonPsson1", "body": "> Perhaps the same assertion I reported here: [#96127 (comment)](https://github.com/llvm/llvm-project/pull/96127#issuecomment-2303862037) ?\r\n\r\nYes, same assertion, and in addition my second test case above triggered another assertion." } ] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "7152bf3bc805b8d9b1873058ab0a084d7b6079d6", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 7947, 7954 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::buildTree_rec" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/full-overlap-non-schedulable.ll", "commands": [ "opt -S --passes=slp-vectorizer < %s" ], "tests": [ { "test_name": "test", "test_body": "define void @test(ptr %p1, ptr %0, i32 %1, i1 %c1, ptr %p2) {\ntop:\n %2 = getelementptr i8, ptr %0, i64 8\n %3 = getelementptr i8, ptr %0, i64 12\n %4 = getelementptr i8, ptr %0, i64 16\n %5 = getelementptr i8, ptr %0, i64 20\n br i1 %c1, label %L42, label %L41\n\nL41: ; preds = %top\n %.not276 = icmp eq ptr %2, null\n %6 = load i32, ptr %2, align 4\n %7 = select i1 %.not276, i32 0, i32 %6\n %.not277 = icmp eq ptr %3, null\n %8 = load i32, ptr %3, align 4\n %9 = select i1 %.not277, i32 0, i32 %8\n %.not278 = icmp eq ptr %4, null\n %10 = load i32, ptr %4, align 4\n %11 = select i1 %.not278, i32 0, i32 %10\n %.not279 = icmp eq ptr %5, null\n %12 = load i32, ptr %5, align 4\n %13 = select i1 %.not279, i32 0, i32 %12\n br label %L112\n\nL42: ; preds = %top\n %14 = load i32, ptr %2, align 4\n %.not280 = icmp eq i32 %14, 0\n br i1 %.not280, label %L112, label %L47\n\nL47: ; preds = %L42\n %15 = load i32, ptr %3, align 4\n %.not282 = icmp eq ptr %4, null\n %16 = load i32, ptr %4, align 4\n %17 = select i1 %.not282, i32 0, i32 %16\n %.not283 = icmp eq ptr %5, null\n %18 = load i32, ptr %5, align 4\n %19 = select i1 %.not283, i32 0, i32 %18\n br label %L112\n\nL112: ; preds = %L47, %L42, %L41\n %value_phi13336 = phi i32 [ %19, %L47 ], [ %13, %L41 ], [ 0, %L42 ]\n %value_phi12335 = phi i32 [ %17, %L47 ], [ %11, %L41 ], [ %1, %L42 ]\n %value_phi11334 = phi i32 [ %15, %L47 ], [ %9, %L41 ], [ 0, %L42 ]\n %value_phi10333 = phi i32 [ 0, %L47 ], [ %7, %L41 ], [ 0, %L42 ]\n store i32 %value_phi10333, ptr %p2, align 4\n store i32 %value_phi11334, ptr %p1, align 4\n store i32 %value_phi12335, ptr %p2, align 4\n store i32 %value_phi13336, ptr %p1, align 4\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "SLPVectorizer miscompilation", "body": "This IR\r\n```llvm\r\n; Function Attrs: alignstack(16)\r\ndefine swiftcc { ptr addrspace(10), i8 } @julia__zip_iterate_all_17381(ptr noalias nocapture noundef nonnull align 4 dereferenceable(96) %union_bytes_return, ptr nonnull swiftself %pgcstack_arg, ptr addrspace(11) nocapture noundef nonnull readonly align 4 dereferenceable(48) %0, ptr addrspace(11) nocapture noundef nonnull readonly align 4 dereferenceable(48) %1) #0 {\r\ntop:\r\n %pgcstack = call ptr @julia.get_pgcstack()\r\n %ptls_field = getelementptr inbounds i8, ptr %pgcstack, i32 8\r\n %ptls_load = load ptr, ptr %ptls_field, align 4\r\n %2 = getelementptr inbounds i8, ptr %ptls_load, i32 16\r\n %safepoint = load ptr, ptr %2, align 4\r\n fence syncscope(\"singlethread\") seq_cst\r\n call void @julia.safepoint(ptr %safepoint)\r\n fence syncscope(\"singlethread\") seq_cst\r\n %3 = load i32, ptr addrspace(11) %1, align 4\r\n %4 = load i32, ptr addrspace(11) %0, align 4\r\n %.not = icmp eq i32 %3, %4\r\n br i1 %.not, label %L26, label %L20\r\n\r\nL20: ; preds = %top\r\n %5 = add i32 %3, 1\r\n %6 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 4\r\n %7 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 8\r\n %8 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 12\r\n %9 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 16\r\n %10 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 20\r\n %.not265 = icmp eq ptr addrspace(11) %6, null\r\n %11 = load i32, ptr addrspace(11) %6, align 4\r\n %12 = select i1 %.not265, i32 undef, i32 %11\r\n %.not266 = icmp eq ptr addrspace(11) %7, null\r\n %13 = load i32, ptr addrspace(11) %7, align 4\r\n %14 = select i1 %.not266, i32 undef, i32 %13\r\n %.not267 = icmp eq ptr addrspace(11) %8, null\r\n %15 = load i32, ptr addrspace(11) %8, align 4\r\n %16 = select i1 %.not267, i32 undef, i32 %15\r\n %.not268 = icmp eq ptr addrspace(11) %9, null\r\n %17 = load i32, ptr addrspace(11) %9, align 4\r\n %18 = select i1 %.not268, i32 undef, i32 %17\r\n %.not269 = icmp eq ptr addrspace(11) %10, null\r\n %19 = load i32, ptr addrspace(11) %10, align 4\r\n %20 = select i1 %.not269, i32 undef, i32 %19\r\n br label %L112\r\n\r\nL26: ; preds = %top\r\n %21 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 4\r\n %22 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 8\r\n %23 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 12\r\n %24 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 16\r\n %25 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 20\r\n %26 = getelementptr inbounds i8, ptr addrspace(11) %0, i32 4\r\n %27 = getelementptr inbounds i8, ptr addrspace(11) %0, i32 12\r\n %28 = getelementptr inbounds i8, ptr addrspace(11) %0, i32 16\r\n %29 = getelementptr inbounds i8, ptr addrspace(11) %0, i32 20\r\n %30 = load i32, ptr addrspace(11) %21, align 4\r\n %31 = load i32, ptr addrspace(11) %26, align 4\r\n %.not275 = icmp eq i32 %30, %31\r\n br i1 %.not275, label %L42, label %L41\r\n\r\nL41: ; preds = %L26\r\n %32 = add i32 %30, 1\r\n %.not276 = icmp eq ptr addrspace(11) %22, null\r\n %33 = load i32, ptr addrspace(11) %22, align 4\r\n %34 = select i1 %.not276, i32 undef, i32 %33\r\n %.not277 = icmp eq ptr addrspace(11) %23, null\r\n %35 = load i32, ptr addrspace(11) %23, align 4\r\n %36 = select i1 %.not277, i32 undef, i32 %35\r\n %.not278 = icmp eq ptr addrspace(11) %24, null\r\n %37 = load i32, ptr addrspace(11) %24, align 4\r\n %38 = select i1 %.not278, i32 undef, i32 %37\r\n %.not279 = icmp eq ptr addrspace(11) %25, null\r\n %39 = load i32, ptr addrspace(11) %25, align 4\r\n %40 = select i1 %.not279, i32 undef, i32 %39\r\n br label %L112\r\n\r\nL42: ; preds = %L26\r\n %41 = getelementptr inbounds i8, ptr addrspace(11) %0, i32 8\r\n %42 = load i32, ptr addrspace(11) %22, align 4\r\n %43 = load i32, ptr addrspace(11) %41, align 4\r\n %.not280 = icmp eq i32 %42, %43\r\n br i1 %.not280, label %L48, label %L47\r\n\r\nL47: ; preds = %L42\r\n %44 = add i32 %42, 1\r\n %.not281 = icmp eq ptr addrspace(11) %23, null\r\n %45 = load i32, ptr addrspace(11) %23, align 4\r\n %46 = select i1 %.not281, i32 undef, i32 %45\r\n %.not282 = icmp eq ptr addrspace(11) %24, null\r\n %47 = load i32, ptr addrspace(11) %24, align 4\r\n %48 = select i1 %.not282, i32 undef, i32 %47\r\n %.not283 = icmp eq ptr addrspace(11) %25, null\r\n %49 = load i32, ptr addrspace(11) %25, align 4\r\n %50 = select i1 %.not283, i32 undef, i32 %49\r\n br label %L112\r\n\r\nL48: ; preds = %L42\r\n %51 = load i32, ptr addrspace(11) %23, align 4\r\n %52 = load i32, ptr addrspace(11) %27, align 4\r\n %.not284 = icmp eq i32 %51, %52\r\n br i1 %.not284, label %L54, label %L53\r\n\r\nL53: ; preds = %L48\r\n %53 = add i32 %51, 1\r\n %.not285 = icmp eq ptr addrspace(11) %24, null\r\n %54 = load i32, ptr addrspace(11) %24, align 4\r\n %55 = select i1 %.not285, i32 undef, i32 %54\r\n %.not286 = icmp eq ptr addrspace(11) %25, null\r\n %56 = load i32, ptr addrspace(11) %25, align 4\r\n %57 = select i1 %.not286, i32 undef, i32 %56\r\n br label %L112\r\n\r\nL54: ; preds = %L48\r\n %58 = load i32, ptr addrspace(11) %24, align 4\r\n %59 = load i32, ptr addrspace(11) %28, align 4\r\n %.not287 = icmp eq i32 %58, %59\r\n br i1 %.not287, label %L87, label %L59\r\n\r\nL59: ; preds = %L54\r\n %60 = add i32 %58, 1\r\n %.not288 = icmp eq ptr addrspace(11) %25, null\r\n %61 = load i32, ptr addrspace(11) %25, align 4\r\n %62 = select i1 %.not288, i32 undef, i32 %61\r\n br label %L112\r\n\r\nL87: ; preds = %L54\r\n %63 = load i32, ptr addrspace(11) %25, align 4\r\n %64 = add i32 %63, 1\r\n %65 = load i32, ptr addrspace(11) %29, align 4\r\n %66 = icmp eq i32 %63, %65\r\n br i1 %66, label %common.ret, label %L112\r\n\r\nL112: ; preds = %L87, %L20, %L41, %L47, %L53, %L59\r\n %value_phi13336 = phi i32 [ %64, %L87 ], [ %62, %L59 ], [ %57, %L53 ], [ %50, %L47 ], [ %40, %L41 ], [ %20, %L20 ]\r\n %value_phi12335 = phi i32 [ 1, %L87 ], [ %60, %L59 ], [ %55, %L53 ], [ %48, %L47 ], [ %38, %L41 ], [ %18, %L20 ]\r\n %value_phi11334 = phi i32 [ 1, %L87 ], [ 1, %L59 ], [ %53, %L53 ], [ %46, %L47 ], [ %36, %L41 ], [ %16, %L20 ]\r\n %value_phi10333 = phi i32 [ 1, %L87 ], [ 1, %L59 ], [ 1, %L53 ], [ %44, %L47 ], [ %34, %L41 ], [ %14, %L20 ]\r\n %value_phi9332 = phi i32 [ 1, %L87 ], [ 1, %L59 ], [ 1, %L53 ], [ 1, %L47 ], [ %32, %L41 ], [ %12, %L20 ]\r\n %value_phi2326 = phi i32 [ 1, %L87 ], [ 1, %L59 ], [ 1, %L53 ], [ 1, %L47 ], [ 1, %L41 ], [ %5, %L20 ]\r\n %67 = getelementptr inbounds i8, ptr addrspace(11) %0, i32 24\r\n %68 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 24\r\n %69 = load i32, ptr addrspace(11) %68, align 4\r\n %70 = load i32, ptr addrspace(11) %67, align 4\r\n %.not289 = icmp eq i32 %69, %70\r\n br i1 %.not289, label %L134, label %L128\r\n\r\nL128: ; preds = %L112\r\n %71 = add i32 %69, 1\r\n %72 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 28\r\n %73 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 32\r\n %74 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 36\r\n %75 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 40\r\n %76 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 44\r\n %.not290 = icmp eq ptr addrspace(11) %72, null\r\n %77 = load i32, ptr addrspace(11) %72, align 4\r\n %78 = select i1 %.not290, i32 undef, i32 %77\r\n %.not291 = icmp eq ptr addrspace(11) %73, null\r\n %79 = load i32, ptr addrspace(11) %73, align 4\r\n %80 = select i1 %.not291, i32 undef, i32 %79\r\n %.not292 = icmp eq ptr addrspace(11) %74, null\r\n %81 = load i32, ptr addrspace(11) %74, align 4\r\n %82 = select i1 %.not292, i32 undef, i32 %81\r\n %.not293 = icmp eq ptr addrspace(11) %75, null\r\n %83 = load i32, ptr addrspace(11) %75, align 4\r\n %84 = select i1 %.not293, i32 undef, i32 %83\r\n %.not294 = icmp eq ptr addrspace(11) %76, null\r\n %85 = load i32, ptr addrspace(11) %76, align 4\r\n %86 = select i1 %.not294, i32 undef, i32 %85\r\n br label %L230\r\n\r\nL134: ; preds = %L112\r\n %87 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 28\r\n %88 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 32\r\n %89 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 36\r\n %90 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 40\r\n %91 = getelementptr inbounds i8, ptr addrspace(11) %1, i32 44\r\n %92 = getelementptr inbounds i8, ptr addrspace(11) %0, i32 28\r\n %93 = getelementptr inbounds i8, ptr addrspace(11) %0, i32 36\r\n %94 = getelementptr inbounds i8, ptr addrspace(11) %0, i32 40\r\n %95 = getelementptr inbounds i8, ptr addrspace(11) %0, i32 44\r\n %96 = load i32, ptr addrspace(11) %87, align 4\r\n %97 = load i32, ptr addrspace(11) %92, align 4\r\n %.not300 = icmp eq i32 %96, %97\r\n br i1 %.not300, label %L150, label %L149\r\n\r\nL149: ; preds = %L134\r\n %98 = add i32 %96, 1\r\n %.not301 = icmp eq ptr addrspace(11) %88, null\r\n %99 = load i32, ptr addrspace(11) %88, align 4\r\n %100 = select i1 %.not301, i32 undef, i32 %99\r\n %.not302 = icmp eq ptr addrspace(11) %89, null\r\n %101 = load i32, ptr addrspace(11) %89, align 4\r\n %102 = select i1 %.not302, i32 undef, i32 %101\r\n %.not303 = icmp eq ptr addrspace(11) %90, null\r\n %103 = load i32, ptr addrspace(11) %90, align 4\r\n %104 = select i1 %.not303, i32 undef, i32 %103\r\n %.not304 = icmp eq ptr addrspace(11) %91, null\r\n %105 = load i32, ptr addrspace(11) %91, align 4\r\n %106 = select i1 %.not304, i32 undef, i32 %105\r\n br label %L230\r\n\r\nL150: ; preds = %L134\r\n %107 = getelementptr inbounds i8, ptr addrspace(11) %0, i32 32\r\n %108 = load i32, ptr addrspace(11) %88, align 4\r\n %109 = load i32, ptr addrspace(11) %107, align 4\r\n %.not305 = icmp eq i32 %108, %109\r\n br i1 %.not305, label %L156, label %L155\r\n\r\nL155: ; preds = %L150\r\n %110 = add i32 %108, 1\r\n %.not306 = icmp eq ptr addrspace(11) %89, null\r\n %111 = load i32, ptr addrspace(11) %89, align 4\r\n %112 = select i1 %.not306, i32 undef, i32 %111\r\n %.not307 = icmp eq ptr addrspace(11) %90, null\r\n %113 = load i32, ptr addrspace(11) %90, align 4\r\n %114 = select i1 %.not307, i32 undef, i32 %113\r\n %.not308 = icmp eq ptr addrspace(11) %91, null\r\n %115 = load i32, ptr addrspace(11) %91, align 4\r\n %116 = select i1 %.not308, i32 undef, i32 %115\r\n br label %L230\r\n\r\nL156: ; preds = %L150\r\n %117 = load i32, ptr addrspace(11) %89, align 4\r\n %118 = load i32, ptr addrspace(11) %93, align 4\r\n %.not309 = icmp eq i32 %117, %118\r\n br i1 %.not309, label %L162, label %L161\r\n\r\nL161: ; preds = %L156\r\n %119 = add i32 %117, 1\r\n %.not310 = icmp eq ptr addrspace(11) %90, null\r\n %120 = load i32, ptr addrspace(11) %90, align 4\r\n %121 = select i1 %.not310, i32 undef, i32 %120\r\n %.not311 = icmp eq ptr addrspace(11) %91, null\r\n %122 = load i32, ptr addrspace(11) %91, align 4\r\n %123 = select i1 %.not311, i32 undef, i32 %122\r\n br label %L230\r\n\r\nL162: ; preds = %L156\r\n %124 = load i32, ptr addrspace(11) %90, align 4\r\n %125 = load i32, ptr addrspace(11) %94, align 4\r\n %.not312 = icmp eq i32 %124, %125\r\n br i1 %.not312, label %L195, label %L167\r\n\r\nL167: ; preds = %L162\r\n %126 = add i32 %124, 1\r\n %.not313 = icmp eq ptr addrspace(11) %91, null\r\n %127 = load i32, ptr addrspace(11) %91, align 4\r\n %128 = select i1 %.not313, i32 undef, i32 %127\r\n br label %L230\r\n\r\nL195: ; preds = %L162\r\n %129 = load i32, ptr addrspace(11) %91, align 4\r\n %130 = add i32 %129, 1\r\n %131 = load i32, ptr addrspace(11) %95, align 4\r\n %132 = icmp eq i32 %129, %131\r\n br i1 %132, label %common.ret, label %L230\r\n\r\ncommon.ret: ; preds = %L87, %L195, %L230\r\n %common.ret.op = phi { ptr addrspace(10), i8 } [ { ptr addrspace(10) null, i8 2 }, %L230 ], [ { ptr addrspace(10) null, i8 1 }, %L195 ], [ { ptr addrspace(10) null, i8 1 }, %L87 ]\r\n ret { ptr addrspace(10), i8 } %common.ret.op\r\n\r\nL230: ; preds = %L195, %L128, %L149, %L155, %L161, %L167\r\n %value_phi29359 = phi i32 [ %130, %L195 ], [ %128, %L167 ], [ %123, %L161 ], [ %116, %L155 ], [ %106, %L149 ], [ %86, %L128 ]\r\n %value_phi28358 = phi i32 [ 1, %L195 ], [ %126, %L167 ], [ %121, %L161 ], [ %114, %L155 ], [ %104, %L149 ], [ %84, %L128 ]\r\n %value_phi27357 = phi i32 [ 1, %L195 ], [ 1, %L167 ], [ %119, %L161 ], [ %112, %L155 ], [ %102, %L149 ], [ %82, %L128 ]\r\n %value_phi26356 = phi i32 [ 1, %L195 ], [ 1, %L167 ], [ 1, %L161 ], [ %110, %L155 ], [ %100, %L149 ], [ %80, %L128 ]\r\n %value_phi25355 = phi i32 [ 1, %L195 ], [ 1, %L167 ], [ 1, %L161 ], [ 1, %L155 ], [ %98, %L149 ], [ %78, %L128 ]\r\n %value_phi18349 = phi i32 [ 1, %L195 ], [ 1, %L167 ], [ 1, %L161 ], [ 1, %L155 ], [ 1, %L149 ], [ %71, %L128 ]\r\n store i32 %value_phi2326, ptr %union_bytes_return, align 4\r\n %.sroa.0429.sroa.0.sroa.2.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 4\r\n store i32 %value_phi9332, ptr %.sroa.0429.sroa.0.sroa.2.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.0.sroa.3.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 8\r\n store i32 %value_phi10333, ptr %.sroa.0429.sroa.0.sroa.3.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.0.sroa.4.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 12\r\n store i32 %value_phi11334, ptr %.sroa.0429.sroa.0.sroa.4.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.0.sroa.5.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 16\r\n store i32 %value_phi12335, ptr %.sroa.0429.sroa.0.sroa.5.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.0.sroa.6.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 20\r\n store i32 %value_phi13336, ptr %.sroa.0429.sroa.0.sroa.6.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.2.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 24\r\n store i32 %value_phi18349, ptr %.sroa.0429.sroa.2.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.3.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 28\r\n store i32 %value_phi25355, ptr %.sroa.0429.sroa.3.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.4.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 32\r\n store i32 %value_phi26356, ptr %.sroa.0429.sroa.4.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.5.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 36\r\n store i32 %value_phi27357, ptr %.sroa.0429.sroa.5.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.6.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 40\r\n store i32 %value_phi28358, ptr %.sroa.0429.sroa.6.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.7.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 44\r\n store i32 %value_phi29359, ptr %.sroa.0429.sroa.7.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.8.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 48\r\n store i32 %value_phi2326, ptr %.sroa.0429.sroa.8.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.0429.sroa.8.sroa.2.0..sroa.0429.sroa.8.0.union_bytes_return.sroa_idx.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 52\r\n store i32 %value_phi9332, ptr %.sroa.0429.sroa.8.sroa.2.0..sroa.0429.sroa.8.0.union_bytes_return.sroa_idx.sroa_idx, align 4\r\n %.sroa.0429.sroa.8.sroa.3.0..sroa.0429.sroa.8.0.union_bytes_return.sroa_idx.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 56\r\n store i32 %value_phi10333, ptr %.sroa.0429.sroa.8.sroa.3.0..sroa.0429.sroa.8.0.union_bytes_return.sroa_idx.sroa_idx, align 4\r\n %.sroa.0429.sroa.8.sroa.4.0..sroa.0429.sroa.8.0.union_bytes_return.sroa_idx.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 60\r\n store i32 %value_phi11334, ptr %.sroa.0429.sroa.8.sroa.4.0..sroa.0429.sroa.8.0.union_bytes_return.sroa_idx.sroa_idx, align 4\r\n %.sroa.0429.sroa.8.sroa.5.0..sroa.0429.sroa.8.0.union_bytes_return.sroa_idx.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 64\r\n store i32 %value_phi12335, ptr %.sroa.0429.sroa.8.sroa.5.0..sroa.0429.sroa.8.0.union_bytes_return.sroa_idx.sroa_idx, align 4\r\n %.sroa.0429.sroa.8.sroa.6.0..sroa.0429.sroa.8.0.union_bytes_return.sroa_idx.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 68\r\n store i32 %value_phi13336, ptr %.sroa.0429.sroa.8.sroa.6.0..sroa.0429.sroa.8.0.union_bytes_return.sroa_idx.sroa_idx, align 4\r\n %.sroa.4430.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 72\r\n store i32 %value_phi18349, ptr %.sroa.4430.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.5431.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 76\r\n store i32 %value_phi25355, ptr %.sroa.5431.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.6432.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 80\r\n store i32 %value_phi26356, ptr %.sroa.6432.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.7433.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 84\r\n store i32 %value_phi27357, ptr %.sroa.7433.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.8434.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 88\r\n store i32 %value_phi28358, ptr %.sroa.8434.0.union_bytes_return.sroa_idx, align 4\r\n %.sroa.9435.0.union_bytes_return.sroa_idx = getelementptr inbounds i8, ptr %union_bytes_return, i32 92\r\n store i32 %value_phi29359, ptr %.sroa.9435.0.union_bytes_return.sroa_idx, align 4\r\n br label %common.ret\r\n}\r\n\r\ndeclare ptr @julia.get_pgcstack()\r\n\r\n; Function Attrs: memory(argmem: readwrite, inaccessiblemem: readwrite)\r\ndeclare void @julia.safepoint(ptr) #2\r\n\r\n; Function Attrs: willreturn memory(argmem: read, inaccessiblemem: readwrite)\r\ndeclare nonnull align 16 dereferenceable(16) ptr addrspace(10) @jl_alloc_genericmemory(ptr addrspace(10), i32) #3\r\n\r\n; Function Attrs: nounwind willreturn allockind(\"alloc\") allocsize(1) memory(argmem: read, inaccessiblemem: readwrite)\r\ndeclare noalias nonnull ptr addrspace(10) @julia.gc_alloc_obj(ptr, i32, ptr addrspace(10)) #4\r\n\r\n; Function Attrs: norecurse nosync nounwind speculatable willreturn memory(none)\r\ndeclare noundef nonnull ptr addrspace(13) @julia.gc_loaded(ptr addrspace(10) nocapture noundef nonnull readnone, ptr noundef nonnull readnone) #5\r\n\r\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)\r\ndeclare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #6\r\n\r\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)\r\ndeclare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #6\r\n```\r\ngives error \r\n```\r\nInstruction does not dominate all uses!\r\n %20 = shufflevector <4 x ptr addrspace(11)> %19, <4 x ptr addrspace(11)> poison, <4 x i32> zeroinitializer\r\n %17 = shufflevector <4 x ptr addrspace(11)> %20, <4 x ptr addrspace(11)> poison, <2 x i32> zeroinitializer\r\nInstruction does not dominate all uses!\r\n %90 = shufflevector <4 x ptr addrspace(11)> %89, <4 x ptr addrspace(11)> poison, <4 x i32> zeroinitializer\r\n %87 = shufflevector <4 x ptr addrspace(11)> %90, <4 x ptr addrspace(11)> poison, <2 x i32> zeroinitializer\r\nLLVM ERROR: Broken module found, compilation aborted!\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=slp-vectorizer <source>\r\n1.\tRunning pass \"verify\" on module \"<source>\"\r\n #0 0x00000000050e6958 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x50e6958)\r\n #1 0x00000000050e434c SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007508e6a42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x00007508e6a969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x00007508e6a42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x00007508e6a287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x00000000007d7105 llvm::json::operator==(llvm::json::Value const&, llvm::json::Value const&) (.cold) JSON.cpp:0:0\r\n #7 0x00000000050254d8 (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x50254d8)\r\n #8 0x0000000004f23440 llvm::VerifierPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4f23440)\r\n #9 0x00000000009000ae llvm::detail::PassModel<llvm::Module, llvm::VerifierPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x9000ae)\r\n#10 0x0000000004ee6850 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4ee6850)\r\n#11 0x000000000090adda llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x90adda)\r\n#12 0x00000000008fdd2a optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8fdd2a)\r\n#13 0x00007508e6a29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#14 0x00007508e6a29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#15 0x00000000008f57ae _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8f57ae)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139\r\n```\r\nhttps://godbolt.org/z/sah34KE77", "author": "Zentrik", "labels": [ "miscompilation", "llvm:SLPVectorizer" ], "comments": [ { "author": "Zentrik", "body": "Reduced IR:\r\n```llvm\r\ndefine swiftcc { ptr addrspace(10), i8 } @julia__zip_iterate_all_17381(ptr addrspace(11) %0, i32 %1) {\r\ntop:\r\n %2 = getelementptr i8, ptr addrspace(11) %0, i32 8\r\n %3 = getelementptr i8, ptr addrspace(11) %0, i32 12\r\n %4 = getelementptr i8, ptr addrspace(11) %0, i32 16\r\n %5 = getelementptr i8, ptr addrspace(11) %0, i32 20\r\n br i1 false, label %L42, label %L41\r\n\r\nL41: ; preds = %top\r\n %.not276 = icmp eq ptr addrspace(11) %2, null\r\n %6 = select i1 %.not276, i32 0, i32 0\r\n %.not277 = icmp eq ptr addrspace(11) %3, null\r\n %7 = select i1 %.not277, i32 0, i32 0\r\n %.not278 = icmp eq ptr addrspace(11) %4, null\r\n %8 = select i1 %.not278, i32 0, i32 0\r\n %.not279 = icmp eq ptr addrspace(11) %5, null\r\n %9 = select i1 %.not279, i32 0, i32 0\r\n br label %common.ret\r\n\r\nL42: ; preds = %top\r\n %.not282 = icmp eq ptr addrspace(11) %4, null\r\n %10 = select i1 %.not282, i32 0, i32 0\r\n %.not283 = icmp eq ptr addrspace(11) %5, null\r\n %11 = select i1 %.not283, i32 0, i32 0\r\n br label %common.ret\r\n\r\nL59: ; No predecessors!\r\n %12 = select i1 false, i32 0, i32 0\r\n br label %common.ret\r\n\r\ncommon.ret: ; preds = %L59, %L42, %L41\r\n %value_phi13336 = phi i32 [ %12, %L59 ], [ %11, %L42 ], [ %9, %L41 ]\r\n %value_phi12335 = phi i32 [ 0, %L59 ], [ %10, %L42 ], [ %8, %L41 ]\r\n %value_phi11334 = phi i32 [ 0, %L59 ], [ %1, %L42 ], [ %7, %L41 ]\r\n %value_phi10333 = phi i32 [ 0, %L59 ], [ 0, %L42 ], [ %6, %L41 ]\r\n ret { ptr addrspace(10), i8 } zeroinitializer\r\n}\r\n```\r\nhttps://godbolt.org/z/a8xzqGYo9" }, { "author": "Zentrik", "body": "Bisected to 69332bb8995aef60d830406de12cb79a5039026 and f3d2609af3031ddb54030548e86335f295cf49ca, @alexey-bataev " } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "cd08fadd03904806fa26a1f117879ddae34fbf67", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 7080, 7086 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationPlanner::cost" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/X86/induction-costs.ll", "commands": [ "opt -p loop-vectorize -mtriple=x86_64-apple-macosx -S %s" ], "tests": [ { "test_name": "iv_and_step_trunc", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\n\ndefine i16 @iv_and_step_trunc() {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %rec = phi i16 [ 0, %entry ], [ %rec.next, %loop ]\n %iv.next = add i64 %iv, 1\n %0 = trunc i64 %iv to i16\n %1 = trunc i64 %iv.next to i16\n %rec.next = mul i16 %0, %1\n %ec = icmp eq i64 %iv, 1\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret i16 %rec\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "wombat2", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\n\ndefine void @wombat2(i32 %arg, ptr %dst) #0 {\nentry:\n %mul = mul i32 %arg, 3\n %zext = zext i32 %arg to i64\n br label %loop\n\nloop: ; preds = %loop, %entry\n %phi = phi i64 [ 4, %entry ], [ %add, %loop ]\n %phi2 = phi i32 [ %mul, %entry ], [ %trunc.1, %loop ]\n %getelementptr = getelementptr i32, ptr %dst, i64 %phi\n %and = and i32 %phi2, 12\n store i32 %and, ptr %getelementptr, align 4\n %mul3 = mul i64 %phi, %zext\n %add = add i64 %phi, 1\n %icmp = icmp ugt i64 %phi, 65\n %trunc.0 = trunc i64 %mul3 to i60\n %trunc.1 = trunc i60 %trunc.0 to i32\n br i1 %icmp, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\nattributes #0 = { \"target-cpu\"=\"skylake-avx512\" \"target-features\"=\"-avx512f\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "with_dead_use", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\n\ndefine void @with_dead_use(i32 %arg, ptr %dst) #0 {\nentry:\n %mul = mul i32 %arg, 3\n %zext = zext i32 %arg to i64\n br label %loop\n\nloop: ; preds = %loop, %entry\n %phi = phi i64 [ 4, %entry ], [ %add, %loop ]\n %phi2 = phi i32 [ %mul, %entry ], [ %trunc, %loop ]\n %getelementptr = getelementptr i32, ptr %dst, i64 %phi\n %and = and i32 %phi2, 12\n store i32 %and, ptr %getelementptr, align 4\n %mul3 = mul i64 %phi, %zext\n %add = add i64 %phi, 1\n %icmp = icmp ugt i64 %phi, 65\n %trunc = trunc i64 %mul3 to i32\n %dead.and = and i32 %trunc, 123\n br i1 %icmp, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\nattributes #0 = { \"target-cpu\"=\"skylake-avx512\" \"target-features\"=\"-avx512f\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_scalar_predicated_cost", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\n\ndefine i32 @test_scalar_predicated_cost(i64 %x, i64 %y, ptr %A) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %cmp9.not = icmp ule i64 %iv, %y\n br i1 %cmp9.not, label %loop.latch, label %if.then\n\nif.then: ; preds = %loop.header\n %or = or i64 %x, %iv\n %gep = getelementptr i32, ptr %A, i64 %iv\n %t = trunc i64 %or to i32\n store i32 %t, ptr %gep, align 4\n br label %loop.latch\n\nloop.latch: ; preds = %if.then, %loop.header\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv, 100\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret i32 0\n}\n\nattributes #0 = { \"min-legal-vector-width\"=\"0\" \"target-cpu\"=\"skylake-avx512\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "truncated_ivs_with_wide_and_scalar_uses", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\n\ndefine void @truncated_ivs_with_wide_and_scalar_uses(i1 %c, ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %iv.16 = trunc i64 %iv to i16\n %iv.32 = trunc i64 %iv to i32\n %gep = getelementptr i16, ptr %dst, i32 %iv.32\n %sel = select i1 %c, i16 %iv.16, i16 10\n store i16 %sel, ptr %gep, align 2\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv, 64\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "multiple_truncated_ivs_with_wide_uses", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\n\ndefine void @multiple_truncated_ivs_with_wide_uses(i1 %c, ptr %A, ptr %B) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %iv.16 = trunc i64 %iv to i16\n %iv.32 = trunc i64 %iv to i32\n %sel = select i1 %c, i16 %iv.16, i16 10\n %gep.A = getelementptr i16, ptr %A, i64 %iv\n store i16 %sel, ptr %gep.A, align 2\n %gep.B = getelementptr i32, ptr %B, i64 %iv\n store i32 %iv.32, ptr %gep.B, align 4\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv, 64\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "wide_iv_trunc_reuse", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\n\ndefine void @wide_iv_trunc_reuse(ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 1, %entry ], [ %iv.next, %loop ]\n %iv.2 = phi i32 [ 0, %entry ], [ %iv.trunc, %loop ]\n store i32 %iv.2, ptr %dst, align 4\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv, 0\n %iv.trunc = trunc i64 %iv to i32\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "iv_used_widened_and_truncated", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\n\ndefine i32 @iv_used_widened_and_truncated(ptr %dst, i64 %N) #0 {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %gep = getelementptr { i32, [8 x i32] }, ptr %dst, i64 %iv\n %t = trunc i64 %iv to i32\n store i32 %t, ptr %gep, align 8\n %iv.next = add i64 %iv, 1\n %c = icmp eq i64 %iv, %N\n br i1 %c, label %exit, label %loop\n\nexit: ; preds = %loop\n ret i32 0\n}\n\nattributes #0 = { \"min-legal-vector-width\"=\"0\" \"target-cpu\"=\"skylake-avx512\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "wombat", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\n\ndefine void @wombat(i32 %arg, ptr %dst) #0 {\nentry:\n %mul = mul i32 %arg, 3\n %zext = zext i32 %arg to i64\n br label %loop\n\nloop: ; preds = %loop, %entry\n %phi = phi i64 [ 4, %entry ], [ %add, %loop ]\n %phi2 = phi i32 [ %mul, %entry ], [ %trunc, %loop ]\n %getelementptr = getelementptr i32, ptr %dst, i64 %phi\n %and = and i32 %phi2, 12\n store i32 %and, ptr %getelementptr, align 4\n %mul3 = mul i64 %phi, %zext\n %add = add i64 %phi, 1\n %icmp = icmp ugt i64 %phi, 65\n %trunc = trunc i64 %mul3 to i32\n br i1 %icmp, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\nattributes #0 = { \"target-cpu\"=\"skylake-avx512\" \"target-features\"=\"-avx512f\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "wide_iv_trunc", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\n\ndefine void @wide_iv_trunc(ptr %dst, i64 %N) {\nentry:\n %cmp = icmp ult i64 %N, 8\n br i1 %cmp, label %loop, label %exit\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %iv.trunc = trunc i64 %iv to i32\n store i32 %iv.trunc, ptr %dst, align 4\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv, %N\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop, %entry\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "multiple_pointer_ivs_with_scalar_uses_only", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\n\ndefine void @multiple_pointer_ivs_with_scalar_uses_only(ptr %A, ptr %B) #0 {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv.1 = phi i32 [ 100, %entry ], [ %dec, %loop ]\n %iv.2 = phi i32 [ 2048, %entry ], [ %add38, %loop ]\n %ptr.iv.1 = phi ptr [ %A, %entry ], [ %outptr.0, %loop ]\n %ptr.iv.2 = phi ptr [ %B, %entry ], [ %incdec.ptr36, %loop ]\n %ptr.iv.3 = phi ptr [ %B, %entry ], [ %incdec.ptr33, %loop ]\n %incdec.ptr33 = getelementptr i8, ptr %ptr.iv.3, i64 1\n %0 = load i8, ptr %ptr.iv.3, align 1\n %conv34 = zext i8 %0 to i32\n %incdec.ptr36 = getelementptr i8, ptr %ptr.iv.2, i64 1\n %1 = load i8, ptr %ptr.iv.2, align 1\n %conv37 = zext i8 %1 to i32\n %add38 = add i32 %conv34, %conv37\n %shr42 = lshr i32 %iv.2, 1\n %conv43 = trunc i32 %shr42 to i8\n store i8 %conv43, ptr %ptr.iv.1, align 1\n %dec = add i32 %iv.1, 1\n %outptr.0 = getelementptr i8, ptr %ptr.iv.1, i64 2\n %cmp30.not = icmp eq i32 %dec, 0\n br i1 %cmp30.not, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\nattributes #0 = { \"min-legal-vector-width\"=\"0\" \"target-cpu\"=\"skylake-avx512\" }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Assertion `VF.Width == BestVF && \"VPlan cost model and legacy cost model disagreed\"' failed.", "body": "To reproduce run opt with \r\n```\r\n-passes=loop-vectorize --mcpu=skylake-avx512 --mattr=+prfchw,-cldemote,+avx,+aes,+sahf,+pclmul,-xop,+crc32,+xsaves,-avx512fp16,-usermsr,-sm4,-egpr,+sse4.1,-avx512ifma,+xsave,+sse4.2,-tsxldtrk,-sm3,-ptwrite,-widekl,+invpcid,+64bit,+xsavec,-avx10.1-512,-avx512vpopcntdq,+cmov,-avx512vp2intersect,+avx512cd,+movbe,-avxvnniint8,-ccmp,-amx-int8,-kl,-avx10.1-256,+evex512,-avxvnni,+rtm,+adx,+avx2,-hreset,-movdiri,-serialize,-sha512,-vpclmulqdq,+avx512vl,-uintr,-cf,+clflushopt,-raoint,-cmpccxadd,+bmi,-amx-tile,+sse,-gfni,-avxvnniint16,-amx-fp16,-zu,-ndd,+xsaveopt,+rdrnd,+avx512f,-amx-bf16,-avx512bf16,-avx512vnni,-push2pop2,+cx8,+avx512bw,+sse3,+pku,-nf,+fsgsbase,-clzero,-mwaitx,-lwp,+lzcnt,-sha,-movdir64b,-ppx,-wbnoinvd,-enqcmd,-avxneconvert,-tbm,-pconfig,-amx-complex,+ssse3,+cx16,+bmi2,+fma,+popcnt,-avxifma,+f16c,-avx512bitalg,-rdpru,+clwb,+mmx,+sse2,+rdseed,-avx512vbmi2,-prefetchi,-rdpid,-fma4,-avx512vbmi,-shstk,-vaes,-waitpkg,-sgx,+fxsr,+avx512dq,-sse4a,-avx512f\r\n```\r\nwith the following test:\r\n```\r\n; ModuleID = './reduced.ll'\r\nsource_filename = \"./reduced.ll\"\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine void @wombat(i32 %arg) #0 gc \"statepoint-example\" {\r\nbb:\r\n %mul = mul i32 %arg, 3\r\n %zext = zext i32 %arg to i64\r\n br label %bb1\r\n\r\nbb1: ; preds = %bb1, %bb\r\n %phi = phi i64 [ %add, %bb1 ], [ 4, %bb ]\r\n %phi2 = phi i32 [ %trunc, %bb1 ], [ %mul, %bb ]\r\n %getelementptr = getelementptr i32, ptr addrspace(1) null, i64 %phi\r\n %and = and i32 %phi2, 0\r\n store i32 0, ptr addrspace(1) %getelementptr, align 4\r\n %mul3 = mul i64 %phi, %zext\r\n %add = add i64 %phi, 1\r\n %icmp = icmp ugt i64 %phi, 65\r\n %trunc = trunc i64 %mul3 to i32\r\n br i1 %icmp, label %bb4, label %bb1\r\n\r\nbb4: ; preds = %bb1\r\n ret void\r\n}\r\n```\r\nReproducer: https://godbolt.org/z/nPsP7h51n\r\n\r\nStack dump:\r\n```\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=loop-vectorize --mcpu=skylake-avx512 --mattr=+prfchw,-cldemote,+avx,+aes,+sahf,+pclmul,-xop,+crc32,+xsaves,-avx512fp16,-usermsr,-sm4,-egpr,+sse4.1,-avx512ifma,+xsave,+sse4.2,-tsxldtrk,-sm3,-ptwrite,-widekl,+invpcid,+64bit,+xsavec,-avx10.1-512,-avx512vpopcntdq,+cmov,-avx512vp2intersect,+avx512cd,+movbe,-avxvnniint8,-ccmp,-amx-int8,-kl,-avx10.1-256,+evex512,-avxvnni,+rtm,+adx,+avx2,-hreset,-movdiri,-serialize,-sha512,-vpclmulqdq,+avx512vl,-uintr,-cf,+clflushopt,-raoint,-cmpccxadd,+bmi,-amx-tile,+sse,-gfni,-avxvnniint16,-amx-fp16,-zu,-ndd,+xsaveopt,+rdrnd,+avx512f,-amx-bf16,-avx512bf16,-avx512vnni,-push2pop2,+cx8,+avx512bw,+sse3,+pku,-nf,+fsgsbase,-clzero,-mwaitx,-lwp,+lzcnt,-sha,-movdir64b,-ppx,-wbnoinvd,-enqcmd,-avxneconvert,-tbm,-pconfig,-amx-complex,+ssse3,+cx16,+bmi2,+fma,+popcnt,-avxifma,+f16c,-avx512bitalg,-rdpru,+clwb,+mmx,+sse2,+rdseed,-avx512vbmi2,-prefetchi,-rdpid,-fma4,-avx512vbmi,-shstk,-vaes,-waitpkg,-sgx,+fxsr,+avx512dq,-sse4a,-avx512f <source>\r\n1.\tRunning pass \"function(loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>)\" on module \"<source>\"\r\n2.\tRunning pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"wombat\"\r\n #0 0x0000000004f053c8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4f053c8)\r\n #1 0x0000000004f02b3c SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007458cc042520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x00007458cc0969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x00007458cc042476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x00007458cc0287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x00007458cc02871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\r\n #7 0x00007458cc039e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n #8 0x0000000003f83f37 llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f83f37)\r\n #9 0x0000000003f86659 llvm::LoopVectorizePass::runImpl(llvm::Function&, llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo*, llvm::TargetLibraryInfo*, llvm::DemandedBits&, llvm::AssumptionCache&, llvm::LoopAccessInfoManager&, llvm::OptimizationRemarkEmitter&, llvm::ProfileSummaryInfo*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f86659)\r\n#10 0x0000000003f86cd2 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f86cd2)\r\n#11 0x0000000002e596ce llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2e596ce)\r\n#12 0x0000000004d02758 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4d02758)\r\n#13 0x0000000000de089e llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xde089e)\r\n#14 0x0000000004d0114e llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4d0114e)\r\n#15 0x0000000000de0eee llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xde0eee)\r\n#16 0x0000000004cff2b0 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4cff2b0)\r\n#17 0x00000000008e3752 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8e3752)\r\n#18 0x00000000008d667c optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8d667c)\r\n#19 0x00007458cc029d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#20 0x00007458cc029e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#21 0x00000000008cdade _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8cdade)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139\r\n```", "author": "TatyanaDoubts", "labels": [ "vectorizers", "crash" ], "comments": [ { "author": "patrick-rivos", "body": "Potentially related: https://github.com/llvm/llvm-project/issues/100591" } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "e577f14b670ee2ae6bb717133310b215be4331b3", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": [ [ 1056, 1062 ] ], "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": [ "canonicalizeSaturatedAdd" ], "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/saturating-add-sub.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "uadd_sat_not_commute_select", "test_body": "define i32 @uadd_sat_not_commute_select(i32 %x, i32 %y) {\n %notx = xor i32 %x, -1\n %a = add i32 %notx, %y\n %c = icmp ult i32 %y, %x\n %r = select i1 %c, i32 %a, i32 -1\n ret i32 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "uadd_sat_not_ugt_commute_add", "test_body": "define <2 x i32> @uadd_sat_not_ugt_commute_add(<2 x i32> %x, <2 x i32> %yp) {\n %y = sdiv <2 x i32> %yp, <i32 2442, i32 4242>\n %notx = xor <2 x i32> %x, splat (i32 -1)\n %a = add <2 x i32> %y, %notx\n %c = icmp ugt <2 x i32> %y, %x\n %r = select <2 x i1> %c, <2 x i32> splat (i32 -1), <2 x i32> %a\n ret <2 x i32> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "uadd_sat_not_ugt_commute_add_partial_poison", "test_body": "define <2 x i32> @uadd_sat_not_ugt_commute_add_partial_poison(<2 x i32> %x, <2 x i32> %yp) {\n %notx = xor <2 x i32> %x, <i32 -1, i32 poison>\n %a = add nuw <2 x i32> %yp, %notx\n %c = icmp ugt <2 x i32> %yp, %x\n %r = select <2 x i1> %c, <2 x i32> splat (i32 -1), <2 x i32> %a\n ret <2 x i32> %r\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Poison value wrongly propagates through vector operations on an optimized code", "body": "https://github.com/llvm/llvm-project/blob/5d4a0d54b5269bad1410e6db957836fe98634069/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp#L1050-L1060\r\n\r\nAlive2 report: https://alive2.llvm.org/ce/z/6tSdhb\r\n\r\n```llvm\r\n----------------------------------------\r\ndefine <2 x i32> @uadd_sat_not_ugt_commute_add.2(<2 x i32> %x, <2 x i32> %yp) {\r\n#0:\r\n %#1 = sdiv <2 x i32> { 2442, 4242 }, %yp\r\n %notx = xor <2 x i32> %x, { 4294967295, poison }\r\n %a = add nuw <2 x i32> %#1, %notx\r\n %c = icmp ugt <2 x i32> %#1, %x\r\n %r = select <2 x i1> %c, <2 x i32> { 4294967295, 4294967295 }, <2 x i32> %a\r\n ret <2 x i32> %r\r\n}\r\n=>\r\ndefine <2 x i32> @uadd_sat_not_ugt_commute_add.2(<2 x i32> %x, <2 x i32> %yp) {\r\n#0:\r\n %#1 = sdiv <2 x i32> { 2442, 4242 }, %yp\r\n %notx = xor <2 x i32> %x, { 4294967295, poison }\r\n %r = uadd_sat <2 x i32> %#1, %notx\r\n ret <2 x i32> %r\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Target is more poisonous than source\r\n\r\nExample:\r\n<2 x i32> %x = < poison, #x00000000 (0) >\r\n<2 x i32> %yp = < #x00000008 (8), #x0000000e (14) >\r\n\r\nSource:\r\n<2 x i32> %#1 = < #x00000131 (305), #x0000012f (303) >\r\n<2 x i32> %notx = < poison, poison >\r\n<2 x i32> %a = < poison, poison >\r\n<2 x i1> %c = < poison, #x1 (1) >\r\n<2 x i32> %r = < poison, #xffffffff (4294967295, -1) >\r\n\r\nTarget:\r\n<2 x i32> %#1 = < #x00000131 (305), #x0000012f (303) >\r\n<2 x i32> %notx = < poison, poison >\r\n<2 x i32> %r = < poison, poison >\r\nSource value: < poison, #xffffffff (4294967295, -1) >\r\nTarget value: < poison, poison >\r\n\r\nSummary:\r\n 0 correct transformations\r\n 1 incorrect transformations\r\n 0 failed-to-prove transformations\r\n 0 Alive2 errors\r\n```", "author": "bongjunj", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "0dacba3ad1b5214ca35eda14987c0b76568a070e", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": [ [ 977, 985 ], [ 990, 1000 ] ], "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": [ "VPlanTransforms::truncateToMinimalBitwidths" ], "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/trunc-reductions.ll", "commands": [ "opt -passes=loop-vectorize,dce,instcombine -force-vector-interleave=1 -force-vector-width=8 -S < %s" ], "tests": [ { "test_name": "reduction_and_or", "test_body": "define i32 @reduction_and_or(i16 %a, i32 %b, ptr %src) {\nentry:\n %ext1 = zext i16 %a to i32\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]\n %or67 = phi i32 [ 10, %entry ], [ %or, %loop ]\n %t = trunc i32 %b to i16\n %ext = sext i16 %t to i32\n %cmp = icmp sgt i32 %ext, %ext1\n %ext2 = zext i1 %cmp to i32\n %cmp3 = icmp sge i32 %iv, %ext2\n %ext4 = zext i1 %cmp3 to i32\n %div = sdiv i32 %ext4, %b\n %and = and i32 %div, 0\n %gep = getelementptr inbounds i32, ptr %src, i32 %iv\n %l = load i32, ptr %gep, align 4\n %add = add i32 %and, %l\n %or = or i32 %or67, %add\n %iv.next = add nsw i32 %iv, 1\n %tobool.not = icmp eq i32 %iv.next, 999\n br i1 %tobool.not, label %exit, label %loop\n\nexit: ; preds = %loop\n %or.lcssa = phi i32 [ %or, %loop ]\n ret i32 %or.lcssa\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "clang crashes at -O{s,2,3} on x86_64-linux-gnu: Assertion `MinBWs.size() == NumProcessedRecipes && \"some entries in MinBWs haven't been processed\"' failed", "body": "It appears to be a recent regression as it does not reproduce with 17.0.1 and earlier versions.\r\n\r\nCompiler Explorer: https://godbolt.org/z/vGGoa684a\r\n\r\n```\r\n[511] % clangtk -v\r\nclang version 19.0.0git (https://github.com/llvm/llvm-project.git 5932fcc47855fdd209784f38820422d2369b84b2)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/opfuzz/bin\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9\r\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nCandidate multilib: .;@m64\r\nSelected multilib: .;@m64\r\n[512] % \r\n[512] % clangtk -Os small.c\r\nclang-19: /local/suz-local/software/clangbuild/llvm-project/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp:1038: static void llvm::VPlanTransforms::truncateToMinimalBitwidths(llvm::VPlan&, const llvm::MapVector<llvm::Instruction*, long unsigned int>&, llvm::LLVMContext&): Assertion `MinBWs.size() == NumProcessedRecipes && \"some entries in MinBWs haven't been processed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0.\tProgram arguments: /local/suz-local/software/local/clang-trunk/bin/clang-19 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/20240211-clangtk-m64-Os-Weverything-pipe-fPIC-build-024130/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/20240211-clangtk-m64-Os-Weverything-pipe-fPIC-build-024130/delta -resource-dir /local/suz-local/software/local/clang-trunk/lib/clang/19 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/suz-local/software/local/clang-trunk/lib/clang/19/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Os -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-d74fff.o -x c small.c\r\n1.\t<eof> parser at end of file\r\n2.\tOptimizer\r\n #0 0x000055fb61397fcf llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x3f04fcf)\r\n #1 0x000055fb613954f4 SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007fdd88b17420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)\r\n #3 0x00007fdd8851e00b raise /build/glibc-wuryBv/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1\r\n #4 0x00007fdd884fd859 abort /build/glibc-wuryBv/glibc-2.31/stdlib/abort.c:81:7\r\n #5 0x00007fdd884fd729 get_sysdep_segment_value /build/glibc-wuryBv/glibc-2.31/intl/loadmsgcat.c:509:8\r\n #6 0x00007fdd884fd729 _nl_load_domain /build/glibc-wuryBv/glibc-2.31/intl/loadmsgcat.c:970:34\r\n #7 0x00007fdd8850efd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)\r\n #8 0x000055fb62c44895 llvm::VPlanTransforms::truncateToMinimalBitwidths(llvm::VPlan&, llvm::MapVector<llvm::Instruction*, unsigned long, llvm::DenseMap<llvm::Instruction*, unsigned int, llvm::DenseMapInfo<llvm::Instruction*, void>, llvm::detail::DenseMapPair<llvm::Instruction*, unsigned int>>, llvm::SmallVector<std::pair<llvm::Instruction*, unsigned long>, 0u>> const&, llvm::LLVMContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x57b1895)\r\n #9 0x000055fb62b2644a llvm::LoopVectorizationPlanner::buildVPlansWithVPRecipes(llvm::ElementCount, llvm::ElementCount) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x569344a)\r\n#10 0x000055fb62b2d861 llvm::LoopVectorizationPlanner::plan(llvm::ElementCount, unsigned int) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x569a861)\r\n#11 0x000055fb62b30a1f llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x569da1f)\r\n#12 0x000055fb62b33acd llvm::LoopVectorizePass::runImpl(llvm::Function&, llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo*, llvm::TargetLibraryInfo*, llvm::DemandedBits&, llvm::AssumptionCache&, llvm::LoopAccessInfoManager&, llvm::OptimizationRemarkEmitter&, llvm::ProfileSummaryInfo*) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x56a0acd)\r\n#13 0x000055fb62b34d20 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x56a1d20)\r\n#14 0x000055fb62717536 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x5284536)\r\n#15 0x000055fb5ea6d61d llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x15da61d)\r\n#16 0x000055fb60d5cb3d llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x38c9b3d)\r\n#17 0x000055fb5ea509a6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x15bd9a6)\r\n#18 0x000055fb60d5aa6d llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x38c7a6d)\r\n#19 0x000055fb6161dc90 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#20 0x000055fb61620f60 (anonymous namespace)::EmitAssemblyHelper::EmitAssembly(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#21 0x000055fb616215cb clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x418e5cb)\r\n#22 0x000055fb61c5730a clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x47c430a)\r\n#23 0x000055fb63944ee9 clang::ParseAST(clang::Sema&, bool, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x64b1ee9)\r\n#24 0x000055fb61c566a8 clang::CodeGenAction::ExecuteAction() (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x47c36a8)\r\n#25 0x000055fb61ed4429 clang::FrontendAction::Execute() (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x4a41429)\r\n#26 0x000055fb61e508de clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x49bd8de)\r\n#27 0x000055fb61fb8d46 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x4b25d46)\r\n#28 0x000055fb5e655986 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x11c2986)\r\n#29 0x000055fb5e64cfba ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#30 0x000055fb5e652434 clang_main(int, char**, llvm::ToolContext const&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x11bf434)\r\n#31 0x000055fb5e564aab main (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x10d1aab)\r\n#32 0x00007fdd884ff083 __libc_start_main /build/glibc-wuryBv/glibc-2.31/csu/../csu/libc-start.c:342:3\r\n#33 0x000055fb5e64ca7e _start (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x11b9a7e)\r\nclangtk: error: unable to execute command: Aborted\r\nclangtk: error: clang frontend command failed due to signal (use -v to see invocation)\r\nclang version 19.0.0git (https://github.com/llvm/llvm-project.git 5932fcc47855fdd209784f38820422d2369b84b2)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/opfuzz/bin\r\nclangtk: note: diagnostic msg: \r\n********************\r\n\r\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\r\nPreprocessed source(s) and associated run script(s) are located at:\r\nclangtk: note: diagnostic msg: /tmp/small-ca7a0b.c\r\nclangtk: note: diagnostic msg: /tmp/small-ca7a0b.sh\r\nclangtk: note: diagnostic msg: \r\n\r\n********************\r\n[513] % \r\n[513] % cat small.c\r\nstatic int *a, **b = &a, f = 1;\r\nint c, d, h;\r\nshort e, g;\r\nint main() {\r\n int **i[9] = {&a, &a, &a, &a, &a, &a, &a, &a, &a};\r\n for (; d; d++)\r\n if ((**b < e) | f) {\r\n int *j = &f, k;\r\n c = h;\r\n k = g > ((long)j == 1);\r\n }\r\n return 0;\r\n}\r\n```", "author": "zhendongsu", "labels": [ "vectorizers", "crash" ], "comments": [ { "author": "zhendongsu", "body": "Another related test that reproduces the crash only at -Os.\r\n\r\n```\r\n[513] % clangtk -v\r\nclang version 19.0.0git (https://github.com/llvm/llvm-project.git e769fb8699e3fa8e40623764f7713bfc783b0330)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/opfuzz/bin\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9\r\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nCandidate multilib: .;@m64\r\nSelected multilib: .;@m64\r\n[514] % \r\n[514] % clangtk -Os small.c\r\nclang-19: /local/suz-local/software/clangbuild/llvm-project/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp:1038: static void llvm::VPlanTransforms::truncateToMinimalBitwidths(llvm::VPlan&, const llvm::MapVector<llvm::Instruction*, long unsigned int>&, llvm::LLVMContext&): Assertion `MinBWs.size() == NumProcessedRecipes && \"some entries in MinBWs haven't been processed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0.\tProgram arguments: /local/suz-local/software/local/clang-trunk/bin/clang-19 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/DUP/20240215-clangtk-m64-Os-Weverything-pipe-fPIC-build-144944/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/DUP/20240215-clangtk-m64-Os-Weverything-pipe-fPIC-build-144944/delta -resource-dir /local/suz-local/software/local/clang-trunk/lib/clang/19 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/suz-local/software/local/clang-trunk/lib/clang/19/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Os -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-a3d3db.o -x c small.c\r\n1.\t<eof> parser at end of file\r\n2.\tOptimizer\r\n #0 0x000055bf09b51e2f llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x3f38e2f)\r\n #1 0x000055bf09b4f354 SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007fdb52bbc420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)\r\n #3 0x00007fdb525c300b raise /build/glibc-wuryBv/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1\r\n #4 0x00007fdb525a2859 abort /build/glibc-wuryBv/glibc-2.31/stdlib/abort.c:81:7\r\n #5 0x00007fdb525a2729 get_sysdep_segment_value /build/glibc-wuryBv/glibc-2.31/intl/loadmsgcat.c:509:8\r\n #6 0x00007fdb525a2729 _nl_load_domain /build/glibc-wuryBv/glibc-2.31/intl/loadmsgcat.c:970:34\r\n #7 0x00007fdb525b3fd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)\r\n #8 0x000055bf0b405565 llvm::VPlanTransforms::truncateToMinimalBitwidths(llvm::VPlan&, llvm::MapVector<llvm::Instruction*, unsigned long, llvm::DenseMap<llvm::Instruction*, unsigned int, llvm::DenseMapInfo<llvm::Instruction*, void>, llvm::detail::DenseMapPair<llvm::Instruction*, unsigned int>>, llvm::SmallVector<std::pair<llvm::Instruction*, unsigned long>, 0u>> const&, llvm::LLVMContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x57ec565)\r\n #9 0x000055bf0b2e62ba llvm::LoopVectorizationPlanner::buildVPlansWithVPRecipes(llvm::ElementCount, llvm::ElementCount) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x56cd2ba)\r\n#10 0x000055bf0b2ed661 llvm::LoopVectorizationPlanner::plan(llvm::ElementCount, unsigned int) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x56d4661)\r\n#11 0x000055bf0b2f081f llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x56d781f)\r\n#12 0x000055bf0b2f38cd llvm::LoopVectorizePass::runImpl(llvm::Function&, llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo*, llvm::TargetLibraryInfo*, llvm::DemandedBits&, llvm::AssumptionCache&, llvm::LoopAccessInfoManager&, llvm::OptimizationRemarkEmitter&, llvm::ProfileSummaryInfo*) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x56da8cd)\r\n#13 0x000055bf0b2f4b20 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x56dbb20)\r\n#14 0x000055bf0aed6086 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x52bd086)\r\n#15 0x000055bf0721ff8d llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x1606f8d)\r\n#16 0x000055bf0951611d llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x38fd11d)\r\n#17 0x000055bf072032e6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x15ea2e6)\r\n#18 0x000055bf0951404d llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x38fb04d)\r\n#19 0x000055bf09dd88c0 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#20 0x000055bf09ddbb80 (anonymous namespace)::EmitAssemblyHelper::EmitAssembly(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#21 0x000055bf09ddc1eb clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x41c31eb)\r\n#22 0x000055bf0a41298a clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x47f998a)\r\n#23 0x000055bf0c10e439 clang::ParseAST(clang::Sema&, bool, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x64f5439)\r\n#24 0x000055bf0a411d18 clang::CodeGenAction::ExecuteAction() (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x47f8d18)\r\n#25 0x000055bf0a6903e9 clang::FrontendAction::Execute() (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x4a773e9)\r\n#26 0x000055bf0a60d21e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x49f421e)\r\n#27 0x000055bf0a776736 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x4b5d736)\r\n#28 0x000055bf06e06b76 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x11edb76)\r\n#29 0x000055bf06dfe1aa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#30 0x000055bf06e03624 clang_main(int, char**, llvm::ToolContext const&) (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x11ea624)\r\n#31 0x000055bf06d15abb main (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x10fcabb)\r\n#32 0x00007fdb525a4083 __libc_start_main /build/glibc-wuryBv/glibc-2.31/csu/../csu/libc-start.c:342:3\r\n#33 0x000055bf06dfdc6e _start (/local/suz-local/software/local/clang-trunk/bin/clang-19+0x11e4c6e)\r\nclangtk: error: unable to execute command: Aborted\r\nclangtk: error: clang frontend command failed due to signal (use -v to see invocation)\r\nclang version 19.0.0git (https://github.com/llvm/llvm-project.git e769fb8699e3fa8e40623764f7713bfc783b0330)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/opfuzz/bin\r\nclangtk: note: diagnostic msg: \r\n********************\r\n\r\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\r\nPreprocessed source(s) and associated run script(s) are located at:\r\nclangtk: note: diagnostic msg: /tmp/small-585ede.c\r\nclangtk: note: diagnostic msg: /tmp/small-585ede.sh\r\nclangtk: note: diagnostic msg: \r\n\r\n********************\r\n[515] % \r\n[515] % cat small.c\r\nint a = 1, b, c, d;\r\nshort e() { return a == 1 ? a : a % b; }\r\nstatic int f;\r\nshort g;\r\nunsigned short h;\r\nint main() {\r\n int *i[10] = {&f};\r\n for (c = -2; c; c++) {\r\n g = e();\r\n d |= f & ((b >= (g > h)) / a);\r\n }\r\n return 0;\r\n}\r\n```" }, { "author": "fhahn", "body": "Thanks for the test case, should be fixed! \r\n\r\nIt looks like this only gets triggered when the resulting truncated compare is dead. Please let me know if you see any issues with similar cases where the resulting loop/compares in the loop aren't dead." } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "263224e4481b0850539a93a272184aac4abe86d4", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": [ [ 2901, 2907 ] ], "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": [ "InstCombinerImpl::visitShuffleVectorInst" ], "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/vec_shuffle.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "pr92887", "test_body": "define i16 @pr92887(<2 x i16> %v) {\n %v0 = extractelement <2 x i16> %v, i64 0\n %v0lo = and i16 %v0, 1\n %v1 = extractelement <2 x i16> %v, i64 1\n %v1lo = and i16 %v1, 1\n %ins1 = insertelement <4 x i16> poison, i16 %v0lo, i64 0\n %ins2 = insertelement <4 x i16> %ins1, i16 %v1lo, i64 1\n %shuf = shufflevector <4 x i16> %ins2, <4 x i16> <i16 poison, i16 poison, i16 undef, i16 undef>, <4 x i32> <i32 0, i32 1, i32 6, i32 7>\n %extract = extractelement <4 x i16> %shuf, i32 2\n ret i16 %extract\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blend_elements_from_load", "test_body": "define <4 x i16> @blend_elements_from_load(ptr align 8 %_0) {\n %load = load <3 x i16>, ptr %_0, align 8\n %rv = shufflevector <3 x i16> <i16 0, i16 undef, i16 undef>, <3 x i16> %load, <4 x i32> <i32 0, i32 1, i32 3, i32 5>\n ret <4 x i16> %rv\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Miscompile with opt -passes=\"instcombine\"", "body": "llvm commit: 502bea25bdc07d1\r\n\r\nReproduce with:\r\n```opt -passes=\"instcombine\" bbi-95633_2.ll -S -o -```\r\n\r\nResult:\r\n```\r\ndefine i16 @foo() {\r\nentry:\r\n store i16 0, ptr @bit, align 2\r\n store i16 0, ptr getelementptr inbounds (i8, ptr @bit, i64 2), align 2\r\n store i16 0, ptr getelementptr inbounds (i8, ptr @bit, i64 4), align 2\r\n store i16 0, ptr getelementptr inbounds (i8, ptr @bit, i64 6), align 2\r\n store i16 2, ptr getelementptr inbounds (i8, ptr @bit, i64 8), align 2\r\n store i16 0, ptr getelementptr inbounds (i8, ptr @bit, i64 10), align 2\r\n ret i16 poison\r\n}\r\n```\r\nNote the poison return value which I think is wrong.\r\n\r\nBefore commit e93d324adb4ff8\r\n```\r\n[InstCombine] Preserve poison in evaluateInDifferentElementOrder()\r\n\r\nDon't unnecessarily replace poison with undef.\r\n```\r\nwe instead got\r\n```\r\ndefine i16 @foo() {\r\nentry:\r\n store i16 0, ptr @bit, align 2\r\n store i16 0, ptr getelementptr inbounds (%struct.bit, ptr @bit, i64 0, i32 1), align 2\r\n store i16 0, ptr getelementptr inbounds (%struct.bit, ptr @bit, i64 0, i32 2), align 2\r\n store i16 0, ptr getelementptr inbounds (%struct.bit, ptr @bit, i64 0, i32 3), align 2\r\n store i16 2, ptr getelementptr inbounds (%struct.bit, ptr @bit, i64 0, i32 4), align 2\r\n store i16 0, ptr getelementptr inbounds (%struct.bit, ptr @bit, i64 0, i32 5), align 2\r\n ret i16 1\r\n}\r\n```\r\nwhere we return 1 instead of poison.\r\n\r\nI tried to use Alive2 on the input/output in\r\n https://alive2.llvm.org/ce/z/1GVkRh\r\nand it says\r\n```\r\nTransformation doesn't verify!\r\n\r\nERROR: Target is more poisonous than source\r\n```\r\n\r\n[bbi-95633_2.ll.gz](https://github.com/llvm/llvm-project/files/15387836/bbi-95633_2.ll.gz)\r\n", "author": "mikaelholmen", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [ { "author": "mikaelholmen", "body": "@nikic : Any idea about this?" }, { "author": "artagnon", "body": "Here's a reduced test case:\r\n\r\n```llvm\r\n; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5\r\n; RUN: opt -passes=instcombine -S %s | FileCheck %s\r\n\r\n%struct.widget = type { i16, i16, i16, i16, i16, i16 }\r\n\r\n; Miscompile. Correct output: 1, incorrect output: poison.\r\ndefine i16 @pr92887(ptr %p, i16 %x, i16 %y) {\r\n; CHECK-LABEL: define i16 @pr92887(\r\n; CHECK-SAME: ptr [[P:%.*]], i16 [[X:%.*]], i16 [[Y:%.*]]) {\r\n; CHECK-NEXT: store i16 0, ptr [[P]], align 2\r\n; CHECK-NEXT: [[P_REPACK1:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 2\r\n; CHECK-NEXT: store i16 0, ptr [[P_REPACK1]], align 2\r\n; CHECK-NEXT: [[P_REPACK2:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 4\r\n; CHECK-NEXT: store i16 0, ptr [[P_REPACK2]], align 2\r\n; CHECK-NEXT: [[P_REPACK3:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 6\r\n; CHECK-NEXT: store i16 0, ptr [[P_REPACK3]], align 2\r\n; CHECK-NEXT: [[P_REPACK4:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 8\r\n; CHECK-NEXT: store i16 2, ptr [[P_REPACK4]], align 2\r\n; CHECK-NEXT: [[P_REPACK5:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 10\r\n; CHECK-NEXT: store i16 0, ptr [[P_REPACK5]], align 2\r\n; CHECK-NEXT: ret i16 poison\r\n;\r\n store %struct.widget { i16 0, i16 0, i16 0, i16 0, i16 2, i16 0 }, ptr %p\r\n %insert.y = insertelement <2 x i16> zeroinitializer, i16 %y, i64 0\r\n %insert.x = insertelement <2 x i16> %insert.y, i16 %x, i64 1\r\n %shufflevector = shufflevector <2 x i16> %insert.x, <2 x i16> zeroinitializer, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>\r\n %extract = extractelement <4 x i16> %shufflevector, i32 2 ; undef\r\n %and = and i16 %extract, 0 ; 0\r\n %gep = getelementptr %struct.widget, ptr %p, i32 0, i32 4\r\n %load = load i16, ptr %gep ; 2\r\n %or = or i16 %and, %load ; 2\r\n %ashr = ashr i16 %or, 1 ; 1\r\n ret i16 %ashr ; 1\r\n}\r\n```\r\n\r\nEDIT: Sorry, Alive2 verifies the transformation as correct." }, { "author": "nikic", "body": "The problematic transform is:\r\n```llvm\r\ndefine i16 @src(<2 x i16> %v) {\r\n %v0 = extractelement <2 x i16> %v, i64 0\r\n %v0lo = and i16 %v0, 1\r\n %v1 = extractelement <2 x i16> %v, i64 1\r\n %v1lo = and i16 %v1, 1\r\n %ins1 = insertelement <4 x i16> poison, i16 %v0lo, i64 0\r\n %ins2 = insertelement <4 x i16> %ins1, i16 %v1lo, i64 1\r\n %shuf = shufflevector <4 x i16> %ins2, <4 x i16> <i16 poison, i16 poison, i16 undef, i16 undef>, <4 x i32> <i32 0, i32 1, i32 6, i32 7>\r\n %extract = extractelement <4 x i16> %shuf, i32 2\r\n ret i16 %extract\r\n}\r\n```\r\nTo:\r\n```\r\ndefine i16 @src(<2 x i16> %v) {\r\n %v0 = extractelement <2 x i16> %v, i64 0\r\n %v0lo = and i16 %v0, 1\r\n %v1 = extractelement <2 x i16> %v, i64 1\r\n %v1lo = and i16 %v1, 1\r\n %1 = insertelement <4 x i16> poison, i16 %v0lo, i64 0\r\n %shuf = insertelement <4 x i16> %1, i16 %v1lo, i64 1\r\n %extract = extractelement <4 x i16> %shuf, i32 2\r\n ret i16 %extract\r\n}\r\n```\r\n\r\nAt a glance, the problem is likely that https://github.com/llvm/llvm-project/blob/e93d324adb4ff80dcbf0e5b678ed3342350eb2de/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp#L2881 should be matching m_Poison, not m_Undef, otherwise it's not a real single-source shuffle." }, { "author": "mikaelholmen", "body": "Thanks for the quick fix!\r\nI've verified that it solves the problem we saw." }, { "author": "nikic", "body": "As a bonus, fixed a similar miscompile in https://github.com/llvm/llvm-project/commit/ecd269e8305330c185bbedbd5a59e887122333ba." }, { "author": "nikic", "body": "Another one in https://github.com/llvm/llvm-project/commit/8f1c984325bd679b2634a6173db69548da87ac71." }, { "author": "nikic", "body": "And... one more in https://github.com/llvm/llvm-project/commit/d0e0205bfc5a147f8744a176a10f185af7520c26." }, { "author": "mikaelholmen", "body": "Nice, four fixes from just one issue! :)" } ] }

[ "llvm/test/Transforms/VectorCombine" ]

{ "fix_commit": "c136d3237a3c6230cfe1ab3f0f6790f903c54a27", "components": [ "VectorCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": [ [ 1984, 2016 ], [ 2038, 2044 ] ], "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": [ "VectorCombine::foldShuffleToIdentity" ], "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/VectorCombine/AArch64/shuffletoidentity.ll", "commands": [ "opt -passes=vector-combine -S %s" ], "tests": [ { "test_name": "add_same_operands", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i32> @add_same_operands(<4 x i32> %x) {\n %shuf = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %add = add <4 x i32> %shuf, %shuf\n %revshuf = shufflevector <4 x i32> %add, <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n ret <4 x i32> %revshuf\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "extrause_add_same_operands", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i32> @extrause_add_same_operands(<4 x i32> %x) {\n %shuf = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %add = add <4 x i32> %shuf, %shuf\n %revshuf = shufflevector <4 x i32> %add, <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %add2 = add <4 x i32> %shuf, %revshuf\n ret <4 x i32> %add2\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "callinst2", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x half> @callinst2(<8 x half> %a) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = call <4 x half> @llvm.fabs.v4f16(<4 x half> %at)\n %abb = call <4 x half> @othercall(<4 x half> %ab)\n %r = shufflevector <4 x half> %abt, <4 x half> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x half> %r\n}\n\ndeclare <4 x half> @othercall(<4 x half>)\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x half> @llvm.fabs.v4f16(<4 x half>) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "poison_intrinsic", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i32> @poison_intrinsic(<2 x i16> %l256) {\n %l266 = call <2 x i16> @llvm.abs.v2i16(<2 x i16> %l256, i1 false)\n %l267 = zext <2 x i16> %l266 to <2 x i32>\n %l271 = shufflevector <2 x i32> %l267, <2 x i32> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>\n ret <4 x i32> %l271\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <2 x i16> @llvm.abs.v2i16(<2 x i16>, i1 immarg) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "splattwice", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x half> @splattwice(<8 x half> %a, <8 x half> %b) {\n %as = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> zeroinitializer\n %bs = shufflevector <8 x half> %b, <8 x half> poison, <4 x i32> zeroinitializer\n %ab1 = fadd <4 x half> %as, %bs\n %ab2 = fadd <4 x half> %as, %bs\n %r = shufflevector <4 x half> %ab1, <4 x half> %ab2, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x half> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "fadd_mismatched_types", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x float> @fadd_mismatched_types(<4 x float> %x, <4 x float> %y) {\n %shuf.x = shufflevector <4 x float> %x, <4 x float> poison, <2 x i32> <i32 0, i32 2>\n %shuf.y = shufflevector <4 x float> %y, <4 x float> poison, <2 x i32> <i32 1, i32 3>\n %fadd = fadd fast <2 x float> %shuf.x, %shuf.y\n %extshuf = shufflevector <2 x float> %fadd, <2 x float> poison, <4 x i32> <i32 0, i32 2, i32 1, i32 3>\n ret <4 x float> %extshuf\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "intrinsics_minmax", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @intrinsics_minmax(<8 x i8> %a, <8 x i8> %b) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = call <4 x i8> @llvm.smin.v4i8(<4 x i8> %at, <4 x i8> %bt)\n %abb = call <4 x i8> @llvm.smin.v4i8(<4 x i8> %ab, <4 x i8> %bb)\n %abt1 = call <4 x i8> @llvm.smax.v4i8(<4 x i8> %abt, <4 x i8> %bt)\n %abb1 = call <4 x i8> @llvm.smax.v4i8(<4 x i8> %abb, <4 x i8> %bb)\n %abt2 = call <4 x i8> @llvm.umin.v4i8(<4 x i8> %abt1, <4 x i8> %bt)\n %abb2 = call <4 x i8> @llvm.umin.v4i8(<4 x i8> %abb1, <4 x i8> %bb)\n %abt3 = call <4 x i8> @llvm.umax.v4i8(<4 x i8> %abt2, <4 x i8> %bt)\n %abb3 = call <4 x i8> @llvm.umax.v4i8(<4 x i8> %abb2, <4 x i8> %bb)\n %r = shufflevector <4 x i8> %abt3, <4 x i8> %abb3, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.smax.v4i8(<4 x i8>, <4 x i8>) #0\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.smin.v4i8(<4 x i8>, <4 x i8>) #0\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.umax.v4i8(<4 x i8>, <4 x i8>) #0\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.umin.v4i8(<4 x i8>, <4 x i8>) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "constantdiff2", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @constantdiff2(<8 x i8> %a) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = add <4 x i8> %at, <i8 1, i8 2, i8 3, i8 4>\n %abb = add <4 x i8> %ab, <i8 1, i8 2, i8 3, i8 4>\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "fcmpsel", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @fcmpsel(<8 x half> %a, <8 x half> %b, <8 x i8> %c, <8 x i8> %d) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x half> %b, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x half> %b, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %cb = shufflevector <8 x i8> %c, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %ct = shufflevector <8 x i8> %c, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %db = shufflevector <8 x i8> %d, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %dt = shufflevector <8 x i8> %d, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt1 = fcmp olt <4 x half> %at, %bt\n %abb1 = fcmp olt <4 x half> %ab, %bb\n %abt = select <4 x i1> %abt1, <4 x i8> %ct, <4 x i8> %dt\n %abb = select <4 x i1> %abb1, <4 x i8> %cb, <4 x i8> %db\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "inner_shuffle", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @inner_shuffle(<8 x i8> %a, <8 x i8> %b, <8 x i8> %c) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>\n %cs = shufflevector <8 x i8> %c, <8 x i8> poison, <4 x i32> zeroinitializer\n %abt = mul <4 x i8> %at, %bt\n %abb = mul <4 x i8> %ab, %bb\n %abt2 = shufflevector <4 x i8> %abt, <4 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %abb2 = shufflevector <4 x i8> %abb, <4 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %abt3 = add <4 x i8> %abt2, %cs\n %abb3 = add <4 x i8> %abb2, %cs\n %r = shufflevector <4 x i8> %abt3, <4 x i8> %abb3, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "zext_types", "test_body": "target triple = \"aarch64\"\n\ndefine void @zext_types(<8 x i16> %a, <8 x i32> %b, ptr %p) {\n %ab = shufflevector <8 x i16> %a, <8 x i16> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>\n %at = shufflevector <8 x i32> %b, <8 x i32> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>\n %ab1 = zext <4 x i16> %ab to <4 x i64>\n %at1 = zext <4 x i32> %at to <4 x i64>\n %r = shufflevector <4 x i64> %ab1, <4 x i64> %at1, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>\n store <8 x i64> %r, ptr %p, align 64\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "add_different_operands", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @add_different_operands(<8 x i8> %a, <8 x i8> %b) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = add <4 x i8> %at, %bt\n %abb = add <4 x i8> %ab, %bb\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "constantdiff", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @constantdiff(<8 x i8> %a) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = add <4 x i8> %at, <i8 1, i8 2, i8 3, i8 4>\n %abb = add <4 x i8> %ab, <i8 5, i8 6, i8 7, i8 8>\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "extrause_add_different_operands", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @extrause_add_different_operands(<8 x i8> %a, <8 x i8> %b) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = add <4 x i8> %at, %bt\n %abb = add <4 x i8> %ab, %bb\n call void @use(<4 x i8> %abb)\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n\ndeclare void @use(<4 x i8>)\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "icmpsel_diffentcond", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @icmpsel_diffentcond(<8 x i8> %a, <8 x i8> %b, <8 x i8> %c, <8 x i8> %d) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %cb = shufflevector <8 x i8> %c, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %ct = shufflevector <8 x i8> %c, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %db = shufflevector <8 x i8> %d, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %dt = shufflevector <8 x i8> %d, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt1 = icmp slt <4 x i8> %at, %bt\n %abb1 = icmp ult <4 x i8> %ab, %bb\n %abt = select <4 x i1> %abt1, <4 x i8> %ct, <4 x i8> %dt\n %abb = select <4 x i1> %abb1, <4 x i8> %cb, <4 x i8> %db\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "exttrunc", "test_body": "target triple = \"aarch64\"\n\ndefine void @exttrunc(<8 x i32> %a, <8 x i32> %b, ptr %p) {\n %ab = shufflevector <8 x i32> %a, <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>\n %at = shufflevector <8 x i32> %a, <8 x i32> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>\n %bb = shufflevector <8 x i32> %b, <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>\n %bt = shufflevector <8 x i32> %b, <8 x i32> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>\n %ab1 = zext <4 x i32> %ab to <4 x i64>\n %at1 = zext <4 x i32> %at to <4 x i64>\n %bb1 = sext <4 x i32> %bb to <4 x i64>\n %bt1 = sext <4 x i32> %bt to <4 x i64>\n %abb = add <4 x i64> %ab1, %bb1\n %abt = add <4 x i64> %at1, %bt1\n %abb1 = trunc <4 x i64> %abb to <4 x i32>\n %abt1 = trunc <4 x i64> %abt to <4 x i32>\n %r = shufflevector <4 x i32> %abb1, <4 x i32> %abt1, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>\n store <8 x i32> %r, ptr %p, align 32\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "lrint", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i32> @lrint(<8 x half> %a) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = call <4 x i32> @llvm.lrint.v4i32.v4f16(<4 x half> %at)\n %abb = call <4 x i32> @llvm.lrint.v4i32.v4f16(<4 x half> %ab)\n %r = shufflevector <4 x i32> %abt, <4 x i32> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i32> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i32> @llvm.lrint.v4i32.v4f16(<4 x half>) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "fadd", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x half> @fadd(<8 x half> %a, <8 x half> %b) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x half> %b, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x half> %b, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = fadd <4 x half> %at, %bt\n %abb = fadd <4 x half> %ab, %bb\n %r = shufflevector <4 x half> %abt, <4 x half> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x half> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "abs_different", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @abs_different(<8 x i8> %a) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = call <4 x i8> @llvm.abs.v4i8(<4 x i8> %at, i1 true)\n %abb = call <4 x i8> @llvm.abs.v4i8(<4 x i8> %ab, i1 false)\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.abs.v4i8(<4 x i8>, i1 immarg) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "wrong_addsub", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @wrong_addsub(<8 x i8> %a, <8 x i8> %b) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = add <4 x i8> %at, %bt\n %abb = sub <4 x i8> %ab, %bb\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "single_zext", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i64> @single_zext(<4 x i32> %x) {\n %shuf = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %zext = zext <4 x i32> %shuf to <4 x i64>\n %revshuf = shufflevector <4 x i64> %zext, <4 x i64> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n ret <4 x i64> %revshuf\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "v8f64interleave", "test_body": "target triple = \"aarch64\"\n\ndefine void @v8f64interleave(i64 %0, ptr %1, ptr %x, double %z) {\nentry:\n %broadcast.splatinsert = insertelement <2 x double> poison, double %z, i64 0\n %broadcast.splat = shufflevector <2 x double> %broadcast.splatinsert, <2 x double> poison, <2 x i32> zeroinitializer\n %wide.vec = load <16 x double>, ptr %1, align 8\n %strided.vec = shufflevector <16 x double> %wide.vec, <16 x double> poison, <2 x i32> <i32 0, i32 8>\n %strided.vec27 = shufflevector <16 x double> %wide.vec, <16 x double> poison, <2 x i32> <i32 1, i32 9>\n %strided.vec28 = shufflevector <16 x double> %wide.vec, <16 x double> poison, <2 x i32> <i32 2, i32 10>\n %strided.vec29 = shufflevector <16 x double> %wide.vec, <16 x double> poison, <2 x i32> <i32 3, i32 11>\n %strided.vec30 = shufflevector <16 x double> %wide.vec, <16 x double> poison, <2 x i32> <i32 4, i32 12>\n %strided.vec31 = shufflevector <16 x double> %wide.vec, <16 x double> poison, <2 x i32> <i32 5, i32 13>\n %strided.vec32 = shufflevector <16 x double> %wide.vec, <16 x double> poison, <2 x i32> <i32 6, i32 14>\n %strided.vec33 = shufflevector <16 x double> %wide.vec, <16 x double> poison, <2 x i32> <i32 7, i32 15>\n %2 = fmul fast <2 x double> %strided.vec, %broadcast.splat\n %3 = getelementptr inbounds double, ptr %x, i64 %0\n %wide.vec34 = load <16 x double>, ptr %3, align 8\n %strided.vec35 = shufflevector <16 x double> %wide.vec34, <16 x double> poison, <2 x i32> <i32 0, i32 8>\n %strided.vec36 = shufflevector <16 x double> %wide.vec34, <16 x double> poison, <2 x i32> <i32 1, i32 9>\n %strided.vec37 = shufflevector <16 x double> %wide.vec34, <16 x double> poison, <2 x i32> <i32 2, i32 10>\n %strided.vec38 = shufflevector <16 x double> %wide.vec34, <16 x double> poison, <2 x i32> <i32 3, i32 11>\n %strided.vec39 = shufflevector <16 x double> %wide.vec34, <16 x double> poison, <2 x i32> <i32 4, i32 12>\n %strided.vec40 = shufflevector <16 x double> %wide.vec34, <16 x double> poison, <2 x i32> <i32 5, i32 13>\n %strided.vec41 = shufflevector <16 x double> %wide.vec34, <16 x double> poison, <2 x i32> <i32 6, i32 14>\n %strided.vec42 = shufflevector <16 x double> %wide.vec34, <16 x double> poison, <2 x i32> <i32 7, i32 15>\n %4 = fadd fast <2 x double> %strided.vec35, %2\n %5 = fmul fast <2 x double> %strided.vec27, %broadcast.splat\n %6 = fadd fast <2 x double> %strided.vec36, %5\n %7 = fmul fast <2 x double> %strided.vec28, %broadcast.splat\n %8 = fadd fast <2 x double> %strided.vec37, %7\n %9 = fmul fast <2 x double> %strided.vec29, %broadcast.splat\n %10 = fadd fast <2 x double> %strided.vec38, %9\n %11 = fmul fast <2 x double> %strided.vec30, %broadcast.splat\n %12 = fadd fast <2 x double> %strided.vec39, %11\n %13 = fmul fast <2 x double> %strided.vec31, %broadcast.splat\n %14 = fadd fast <2 x double> %strided.vec40, %13\n %15 = fmul fast <2 x double> %strided.vec32, %broadcast.splat\n %16 = fadd fast <2 x double> %strided.vec41, %15\n %17 = or disjoint i64 %0, 7\n %18 = fmul fast <2 x double> %strided.vec33, %broadcast.splat\n %19 = getelementptr inbounds double, ptr %x, i64 %17\n %20 = fadd fast <2 x double> %strided.vec42, %18\n %21 = getelementptr inbounds i8, ptr %19, i64 -56\n %22 = shufflevector <2 x double> %4, <2 x double> %6, <4 x i32> <i32 0, i32 1, i32 2, i32 3>\n %23 = shufflevector <2 x double> %8, <2 x double> %10, <4 x i32> <i32 0, i32 1, i32 2, i32 3>\n %24 = shufflevector <2 x double> %12, <2 x double> %14, <4 x i32> <i32 0, i32 1, i32 2, i32 3>\n %25 = shufflevector <2 x double> %16, <2 x double> %20, <4 x i32> <i32 0, i32 1, i32 2, i32 3>\n %26 = shufflevector <4 x double> %22, <4 x double> %23, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>\n %27 = shufflevector <4 x double> %24, <4 x double> %25, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>\n %interleaved.vec = shufflevector <8 x double> %26, <8 x double> %27, <16 x i32> <i32 0, i32 2, i32 4, i32 6, i32 8, i32 10, i32 12, i32 14, i32 1, i32 3, i32 5, i32 7, i32 9, i32 11, i32 13, i32 15>\n store <16 x double> %interleaved.vec, ptr %21, align 8\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "singleop", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i8> @singleop(<4 x i8> %a, <4 x i8> %b) {\n %a1 = shufflevector <4 x i8> %a, <4 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %b1 = shufflevector <4 x i8> %b, <4 x i8> poison, <4 x i32> zeroinitializer\n %a2 = zext <4 x i8> %a1 to <4 x i16>\n %b2 = zext <4 x i8> %b1 to <4 x i16>\n %ab = add <4 x i16> %a2, %b2\n %t = trunc <4 x i16> %ab to <4 x i8>\n %r = shufflevector <4 x i8> %t, <4 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n ret <4 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_bitcast", "test_body": "target triple = \"aarch64\"\n\ndefine i32 @not_bitcast(<4 x i8> %x) {\n %shuf = shufflevector <4 x i8> %x, <4 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bitcast = bitcast <4 x i8> %shuf to i32\n ret i32 %bitcast\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "zext_chain", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i64> @zext_chain(<4 x i16> %x) {\n %shuf = shufflevector <4 x i16> %x, <4 x i16> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %zext = zext <4 x i16> %shuf to <4 x i32>\n %sext = sext <4 x i32> %zext to <4 x i64>\n %revshuf = shufflevector <4 x i64> %sext, <4 x i64> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n ret <4 x i64> %revshuf\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "intrinsics_different", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @intrinsics_different(<8 x i8> %a, <8 x i8> %b) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = call <4 x i8> @llvm.smin.v4i8(<4 x i8> %at, <4 x i8> %bt)\n %abb = call <4 x i8> @llvm.umin.v4i8(<4 x i8> %ab, <4 x i8> %bb)\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.smin.v4i8(<4 x i8>, <4 x i8>) #0\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.umin.v4i8(<4 x i8>, <4 x i8>) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "operandbundles_second", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @operandbundles_second(<8 x i8> %a) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = call <4 x i8> @llvm.abs.v4i8(<4 x i8> %at, i1 false)\n %abb = call <4 x i8> @llvm.abs.v4i8(<4 x i8> %ab, i1 false) [ \"jl_roots\"(ptr addrspace(10) null, ptr addrspace(10) null) ]\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.abs.v4i8(<4 x i8>, i1 immarg) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "cast_mismatched_types", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i64> @cast_mismatched_types(<4 x i32> %x) {\n %shuf = shufflevector <4 x i32> %x, <4 x i32> poison, <2 x i32> <i32 0, i32 2>\n %zext = zext <2 x i32> %shuf to <2 x i64>\n %extshuf = shufflevector <2 x i64> %zext, <2 x i64> poison, <4 x i32> <i32 0, i32 2, i32 1, i32 3>\n ret <4 x i64> %extshuf\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "operandbundles_first", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @operandbundles_first(<8 x i8> %a) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = call <4 x i8> @llvm.abs.v4i8(<4 x i8> %at, i1 false) [ \"jl_roots\"(ptr addrspace(10) null, ptr addrspace(10) null) ]\n %abb = call <4 x i8> @llvm.abs.v4i8(<4 x i8> %ab, i1 false)\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.abs.v4i8(<4 x i8>, i1 immarg) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "wrong_lanes", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @wrong_lanes(<8 x i8> %a, <8 x i8> %b) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = add <4 x i8> %at, %bt\n %abb = add <4 x i8> %ab, %bb\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 6, i32 7, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "first_scalar_select", "test_body": "target triple = \"aarch64\"\n\ndefine <2 x float> @first_scalar_select(<2 x float> %0, <2 x float> %1, float %x) {\nentry:\n %cmp.i903 = fcmp ogt float %x, 0.000000e+00\n %sel1639 = select i1 %cmp.i903, <2 x float> %0, <2 x float> %1\n %2 = fcmp ogt <2 x float> %0, zeroinitializer\n %sel48.i913 = select <2 x i1> %2, <2 x float> %0, <2 x float> %1\n %3 = shufflevector <2 x float> %sel1639, <2 x float> %sel48.i913, <2 x i32> <i32 0, i32 3>\n ret <2 x float> %3\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "splat0", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x half> @splat0(<8 x half> %a, <8 x half> %b) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bs = shufflevector <8 x half> %b, <8 x half> poison, <4 x i32> zeroinitializer\n %abt = fadd <4 x half> %at, %bs\n %abb = fadd <4 x half> %ab, %bs\n %r = shufflevector <4 x half> %abt, <4 x half> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x half> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "splatandidentity", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x half> @splatandidentity(<8 x half> %a, <8 x half> %b) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bs = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> zeroinitializer\n %abt = fadd <4 x half> %at, %bs\n %abb = fadd <4 x half> %ab, %bs\n %r = shufflevector <4 x half> %abt, <4 x half> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x half> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "trivial", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @trivial(<8 x i8> %a) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %r = shufflevector <4 x i8> %at, <4 x i8> %ab, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "constantsplat", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @constantsplat(<8 x i8> %a) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = add <4 x i8> %at, splat (i8 10)\n %abb = add <4 x i8> %ab, splat (i8 10)\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "bitcast_srcty_mismatch", "test_body": "target triple = \"aarch64\"\n\ndefine void @bitcast_srcty_mismatch() {\nentry:\n %shuffle.i.i = shufflevector <2 x i64> zeroinitializer, <2 x i64> zeroinitializer, <2 x i32> <i32 1, i32 3>\n %0 = bitcast <4 x i32> zeroinitializer to <4 x float>\n %1 = bitcast <2 x i64> %shuffle.i.i to <4 x float>\n %shufp.i196 = shufflevector <4 x float> %0, <4 x float> %1, <4 x i32> <i32 2, i32 1, i32 4, i32 7>\n store <4 x float> %shufp.i196, ptr null, align 16\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "zext_add_chain", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i64> @zext_add_chain(<4 x i32> %x) {\n %shuf = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %zext = zext <4 x i32> %shuf to <4 x i64>\n %add = add <4 x i64> %zext, %zext\n %revshuf = shufflevector <4 x i64> %add, <4 x i64> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n ret <4 x i64> %revshuf\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "add_chain", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i32> @add_chain(<4 x i32> %x) {\n %shuf = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %add = add <4 x i32> %shuf, %shuf\n %add2 = add <4 x i32> %add, %add\n %revshuf = shufflevector <4 x i32> %add2, <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n ret <4 x i32> %revshuf\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "splat2", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x half> @splat2(<8 x half> %a, <8 x half> %b) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bs = shufflevector <8 x half> %b, <8 x half> poison, <4 x i32> <i32 2, i32 2, i32 2, i32 2>\n %abt = fadd <4 x half> %at, %bs\n %abb = fadd <4 x half> %ab, %bs\n %r = shufflevector <4 x half> %abt, <4 x half> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x half> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "trunc", "test_body": "target triple = \"aarch64\"\n\ndefine void @trunc(<8 x i64> %a, <8 x i64> %b, ptr %p) {\n %ab = shufflevector <8 x i64> %a, <8 x i64> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>\n %at = shufflevector <8 x i64> %a, <8 x i64> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>\n %abb1 = trunc <4 x i64> %ab to <4 x i32>\n %abt1 = trunc <4 x i64> %at to <4 x i32>\n %r = shufflevector <4 x i32> %abb1, <4 x i32> %abt1, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>\n store <8 x i32> %r, ptr %p, align 32\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "sext", "test_body": "target triple = \"aarch64\"\n\ndefine void @sext(<8 x i16> %a, <8 x i16> %b, ptr %p) {\n %ab = shufflevector <8 x i16> %a, <8 x i16> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>\n %at = shufflevector <8 x i16> %a, <8 x i16> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>\n %bb = shufflevector <8 x i16> %b, <8 x i16> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>\n %bt = shufflevector <8 x i16> %b, <8 x i16> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>\n %ab1 = sext <4 x i16> %ab to <4 x i32>\n %at1 = sext <4 x i16> %at to <4 x i32>\n %bb1 = sext <4 x i16> %bb to <4 x i32>\n %bt1 = sext <4 x i16> %bt to <4 x i32>\n %abb = add <4 x i32> %ab1, %bb1\n %abt = add <4 x i32> %at1, %bt1\n %r = shufflevector <4 x i32> %abb, <4 x i32> %abt, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>\n store <8 x i32> %r, ptr %p, align 32\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "powi", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x half> @powi(<8 x half> %a) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = call <4 x half> @llvm.powi.v4f16.i32(<4 x half> %at, i32 10)\n %abb = call <4 x half> @llvm.powi.v4f16.i32(<4 x half> %ab, i32 10)\n %r = shufflevector <4 x half> %abt, <4 x half> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x half> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x half> @llvm.powi.v4f16.i32(<4 x half>, i32) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "callinst", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x half> @callinst(<8 x half> %a) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = call <4 x half> @othercall(<4 x half> %at)\n %abb = call <4 x half> @llvm.fabs.v4f16(<4 x half> %ab)\n %r = shufflevector <4 x half> %abt, <4 x half> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x half> %r\n}\n\ndeclare <4 x half> @othercall(<4 x half>)\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x half> @llvm.fabs.v4f16(<4 x half>) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "fma", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x half> @fma(<8 x half> %a, <8 x half> %b, <8 x half> %c) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x half> %b, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x half> %b, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %cb = shufflevector <8 x half> %c, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %ct = shufflevector <8 x half> %c, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abb = call <4 x half> @llvm.fma.v4f16(<4 x half> %ab, <4 x half> %bb, <4 x half> %cb)\n %abt = call <4 x half> @llvm.fma.v4f16(<4 x half> %at, <4 x half> %bt, <4 x half> %ct)\n %r = shufflevector <4 x half> %abt, <4 x half> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x half> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x half> @llvm.fma.v4f16(<4 x half>, <4 x half>, <4 x half>) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "extrause_shuffle", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @extrause_shuffle(<8 x i8> %a, <8 x i8> %b) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n call void @use(<4 x i8> %bt)\n %abt = add <4 x i8> %at, %bt\n %abb = add <4 x i8> %ab, %bb\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n\ndeclare void @use(<4 x i8>)\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "intrinsics_addsat", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @intrinsics_addsat(<8 x i8> %a, <8 x i8> %b) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = call <4 x i8> @llvm.sadd.sat.v4i8(<4 x i8> %at, <4 x i8> %bt)\n %abb = call <4 x i8> @llvm.sadd.sat.v4i8(<4 x i8> %ab, <4 x i8> %bb)\n %abt1 = call <4 x i8> @llvm.ssub.sat.v4i8(<4 x i8> %abt, <4 x i8> %bt)\n %abb1 = call <4 x i8> @llvm.ssub.sat.v4i8(<4 x i8> %abb, <4 x i8> %bb)\n %abt2 = call <4 x i8> @llvm.uadd.sat.v4i8(<4 x i8> %abt1, <4 x i8> %bt)\n %abb2 = call <4 x i8> @llvm.uadd.sat.v4i8(<4 x i8> %abb1, <4 x i8> %bb)\n %abt3 = call <4 x i8> @llvm.usub.sat.v4i8(<4 x i8> %abt2, <4 x i8> %bt)\n %abb3 = call <4 x i8> @llvm.usub.sat.v4i8(<4 x i8> %abb2, <4 x i8> %bb)\n %r = shufflevector <4 x i8> %abt3, <4 x i8> %abb3, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.sadd.sat.v4i8(<4 x i8>, <4 x i8>) #0\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.ssub.sat.v4i8(<4 x i8>, <4 x i8>) #0\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.uadd.sat.v4i8(<4 x i8>, <4 x i8>) #0\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.usub.sat.v4i8(<4 x i8>, <4 x i8>) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "zext", "test_body": "target triple = \"aarch64\"\n\ndefine void @zext(<8 x i16> %a, <8 x i16> %b, ptr %p) {\n %ab = shufflevector <8 x i16> %a, <8 x i16> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>\n %at = shufflevector <8 x i16> %a, <8 x i16> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>\n %bb = shufflevector <8 x i16> %b, <8 x i16> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>\n %bt = shufflevector <8 x i16> %b, <8 x i16> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>\n %ab1 = zext <4 x i16> %ab to <4 x i32>\n %at1 = zext <4 x i16> %at to <4 x i32>\n %bb1 = zext <4 x i16> %bb to <4 x i32>\n %bt1 = zext <4 x i16> %bt to <4 x i32>\n %abb = add <4 x i32> %ab1, %bb1\n %abt = add <4 x i32> %at1, %bt1\n %r = shufflevector <4 x i32> %abb, <4 x i32> %abt, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>\n store <8 x i32> %r, ptr %p, align 32\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "div", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @div(<8 x i8> %a, <8 x i8> %b) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = udiv <4 x i8> %at, %bt\n %abb = udiv <4 x i8> %ab, %bb\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 poison, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "bitcast_smax_v8i32_v4i32", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i64> @bitcast_smax_v8i32_v4i32(<4 x i64> %a, <4 x i64> %b) {\n %a.bc0 = bitcast <4 x i64> %a to <8 x i32>\n %b.bc0 = bitcast <4 x i64> %b to <8 x i32>\n %cmp = icmp slt <8 x i32> %a.bc0, %b.bc0\n %cmp.lo = shufflevector <8 x i1> %cmp, <8 x i1> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>\n %cmp.hi = shufflevector <8 x i1> %cmp, <8 x i1> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>\n %a.bc1 = bitcast <4 x i64> %a to <8 x i32>\n %b.bc1 = bitcast <4 x i64> %b to <8 x i32>\n %a.lo = shufflevector <8 x i32> %a.bc1, <8 x i32> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>\n %b.lo = shufflevector <8 x i32> %b.bc1, <8 x i32> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>\n %lo = select <4 x i1> %cmp.lo, <4 x i32> %b.lo, <4 x i32> %a.lo\n %a.bc2 = bitcast <4 x i64> %a to <8 x i32>\n %b.bc2 = bitcast <4 x i64> %b to <8 x i32>\n %a.hi = shufflevector <8 x i32> %a.bc2, <8 x i32> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>\n %b.hi = shufflevector <8 x i32> %b.bc2, <8 x i32> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>\n %hi = select <4 x i1> %cmp.hi, <4 x i32> %b.hi, <4 x i32> %a.hi\n %concat = shufflevector <4 x i32> %lo, <4 x i32> %hi, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>\n %res = bitcast <8 x i32> %concat to <4 x i64>\n ret <4 x i64> %res\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_bitcast2", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i16> @not_bitcast2(<4 x i32> %x, <8 x i16> %y) {\n %cast = bitcast <4 x i32> %x to <8 x i16>\n %out = shufflevector <8 x i16> %y, <8 x i16> %cast, <8 x i32> <i32 8, i32 1, i32 10, i32 3, i32 12, i32 5, i32 14, i32 7>\n ret <8 x i16> %out\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "abs", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @abs(<8 x i8> %a) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = call <4 x i8> @llvm.abs.v4i8(<4 x i8> %at, i1 false)\n %abb = call <4 x i8> @llvm.abs.v4i8(<4 x i8> %ab, i1 false)\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i8> @llvm.abs.v4i8(<4 x i8>, i1 immarg) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "maximal_legal_fpmath", "test_body": "target triple = \"aarch64\"\n\ndefine void @maximal_legal_fpmath(ptr %addr1, ptr %addr2, ptr %result, float %val) {\n %splatinsert = insertelement <4 x float> poison, float %val, i64 0\n %incoming.vec = shufflevector <4 x float> %splatinsert, <4 x float> poison, <4 x i32> zeroinitializer\n %vec1 = load <16 x float>, ptr %addr1, align 4\n %strided.vec1 = shufflevector <16 x float> %vec1, <16 x float> poison, <4 x i32> <i32 0, i32 4, i32 8, i32 12>\n %strided.vec2 = shufflevector <16 x float> %vec1, <16 x float> poison, <4 x i32> <i32 1, i32 5, i32 9, i32 13>\n %strided.vec3 = shufflevector <16 x float> %vec1, <16 x float> poison, <4 x i32> <i32 2, i32 6, i32 10, i32 14>\n %strided.vec4 = shufflevector <16 x float> %vec1, <16 x float> poison, <4 x i32> <i32 3, i32 7, i32 11, i32 15>\n %vec2 = load <16 x float>, ptr %addr2, align 4\n %strided.vec6 = shufflevector <16 x float> %vec2, <16 x float> poison, <4 x i32> <i32 0, i32 4, i32 8, i32 12>\n %strided.vec7 = shufflevector <16 x float> %vec2, <16 x float> poison, <4 x i32> <i32 1, i32 5, i32 9, i32 13>\n %strided.vec8 = shufflevector <16 x float> %vec2, <16 x float> poison, <4 x i32> <i32 2, i32 6, i32 10, i32 14>\n %strided.vec9 = shufflevector <16 x float> %vec2, <16 x float> poison, <4 x i32> <i32 3, i32 7, i32 11, i32 15>\n %1 = fmul fast <4 x float> %incoming.vec, %strided.vec6\n %2 = fadd fast <4 x float> %strided.vec1, %1\n %3 = fmul contract <4 x float> %incoming.vec, %strided.vec7\n %4 = fadd fast <4 x float> %strided.vec2, %3\n %5 = fmul reassoc contract <4 x float> %incoming.vec, %strided.vec8\n %6 = fadd fast <4 x float> %strided.vec3, %5\n %7 = fmul reassoc contract <4 x float> %incoming.vec, %strided.vec9\n %8 = fadd reassoc contract <4 x float> %strided.vec4, %7\n %9 = shufflevector <4 x float> %2, <4 x float> %4, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>\n %10 = shufflevector <4 x float> %6, <4 x float> %8, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>\n %interleaved.vec = shufflevector <8 x float> %9, <8 x float> %10, <16 x i32> <i32 0, i32 4, i32 8, i32 12, i32 1, i32 5, i32 9, i32 13, i32 2, i32 6, i32 10, i32 14, i32 3, i32 7, i32 11, i32 15>\n store <16 x float> %interleaved.vec, ptr %result, align 4\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_zext", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i64> @not_zext(<4 x i32> %x) {\n %zext = zext <4 x i32> %x to <4 x i64>\n %revshuf = shufflevector <4 x i64> %zext, <4 x i64> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n ret <4 x i64> %revshuf\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "undeflane", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @undeflane(<8 x i8> %a, <8 x i8> %b) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = add <4 x i8> %at, %bt\n %abb = add <4 x i8> %ab, %bb\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 poison, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "operandbundles", "test_body": "target triple = \"aarch64\"\n\ndefine <16 x i64> @operandbundles(<4 x i64> %a, <4 x i64> %b, <4 x i64> %c) {\n %call = call <4 x i64> @llvm.fshl.v4i64(<4 x i64> %a, <4 x i64> %b, <4 x i64> %c) [ \"jl_roots\"(ptr addrspace(10) null, ptr addrspace(10) null) ]\n %shufflevector = shufflevector <4 x i64> %call, <4 x i64> poison, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>\n %shufflevector1 = shufflevector <16 x i64> %shufflevector, <16 x i64> undef, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>\n ret <16 x i64> %shufflevector1\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i64> @llvm.fshl.v4i64(<4 x i64>, <4 x i64>, <4 x i64>) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "fneg", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x half> @fneg(<8 x half> %a, <8 x half> %b) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = fneg <4 x half> %at\n %abb = fneg <4 x half> %ab\n %r = shufflevector <4 x half> %abt, <4 x half> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x half> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "icmpsel", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x i8> @icmpsel(<8 x i8> %a, <8 x i8> %b, <8 x i8> %c, <8 x i8> %d) {\n %ab = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x i8> %a, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %bb = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %bt = shufflevector <8 x i8> %b, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %cb = shufflevector <8 x i8> %c, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %ct = shufflevector <8 x i8> %c, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %db = shufflevector <8 x i8> %d, <8 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %dt = shufflevector <8 x i8> %d, <8 x i8> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt1 = icmp slt <4 x i8> %at, %bt\n %abb1 = icmp slt <4 x i8> %ab, %bb\n %abt = select <4 x i1> %abt1, <4 x i8> %ct, <4 x i8> %dt\n %abb = select <4 x i1> %abb1, <4 x i8> %cb, <4 x i8> %db\n %r = shufflevector <4 x i8> %abt, <4 x i8> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "szext", "test_body": "target triple = \"aarch64\"\n\ndefine void @szext(<8 x i32> %a, <8 x i32> %b, ptr %p) {\n %ab = shufflevector <8 x i32> %a, <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>\n %at = shufflevector <8 x i32> %a, <8 x i32> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>\n %ab1 = sext <4 x i32> %ab to <4 x i64>\n %at1 = zext <4 x i32> %at to <4 x i64>\n %r = shufflevector <4 x i64> %ab1, <4 x i64> %at1, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>\n store <8 x i64> %r, ptr %p, align 64\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "constantsplatf", "test_body": "target triple = \"aarch64\"\n\ndefine <8 x half> @constantsplatf(<8 x half> %a) {\n %ab = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %at = shufflevector <8 x half> %a, <8 x half> poison, <4 x i32> <i32 7, i32 6, i32 5, i32 4>\n %abt = fadd <4 x half> %at, splat (half 0xH4900)\n %abb = fadd <4 x half> %ab, splat (half 0xH4900)\n %r = shufflevector <4 x half> %abt, <4 x half> %abb, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>\n ret <8 x half> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_zext2", "test_body": "target triple = \"aarch64\"\n\ndefine <4 x i64> @not_zext2(<4 x i32> %x) {\n %shuf = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>\n %zext = zext <4 x i32> %shuf to <4 x i64>\n ret <4 x i64> %zext\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Assertion Failure in Vector Combine", "body": "Runnning vector-combine pass on \r\n```llvm\r\nsource_filename = \"text\"\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:10:11:12:13\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine nonnull ptr addrspace(10) @wombat() {\r\n %call = call <4 x i64> @llvm.fshl.v4i64(<4 x i64> zeroinitializer, <4 x i64> zeroinitializer, <4 x i64> <i64 45, i64 45, i64 45, i64 45>) [ \"jl_roots\"(ptr addrspace(10) null, ptr addrspace(10) null) ]\r\n %shufflevector = shufflevector <4 x i64> %call, <4 x i64> poison, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>\r\n %shufflevector1 = shufflevector <16 x i64> %shufflevector, <16 x i64> undef, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>\r\n ret ptr addrspace(10) null\r\n}\r\n\r\ndeclare <4 x i64> @llvm.fshl.v4i64(<4 x i64>, <4 x i64>, <4 x i64>)\r\n```\r\nproduces\r\n```\r\nopt: /root/llvm-project/llvm/include/llvm/Support/Casting.h:578: decltype(auto) llvm::cast(From*) [with To = llvm::FixedVectorType; From = llvm::Type]: Assertion `isa<To>(Val) && \"cast<Ty>() argument of incompatible type!\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=vector-combine <source>\r\n1.\tRunning pass \"function(vector-combine)\" on module \"<source>\"\r\n2.\tRunning pass \"vector-combine\" on function \"wombat\"\r\n #0 0x0000000005079b38 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x5079b38)\r\n #1 0x00000000050774ec SignalHandler(int) Signals.cpp:0:0\r\n #2 0x000074d0dce42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x000074d0dce969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x000074d0dce42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x000074d0dce287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x000074d0dce2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\r\n #7 0x000074d0dce39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n #8 0x0000000004186458 (anonymous namespace)::VectorCombine::foldShuffleToIdentity(llvm::Instruction&) VectorCombine.cpp:0:0\r\n #9 0x0000000004190f01 (anonymous namespace)::VectorCombine::run()::'lambda'(llvm::Instruction&)::operator()(llvm::Instruction&) const (.isra.0) VectorCombine.cpp:0:0\r\n#10 0x0000000004191c25 llvm::VectorCombinePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4191c25)\r\n#11 0x0000000002f2defe llvm::detail::PassModel<llvm::Function, llvm::VectorCombinePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2f2defe)\r\n#12 0x0000000004e7c978 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7c978)\r\n#13 0x0000000000e157ce llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe157ce)\r\n#14 0x0000000004e7b39e llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7b39e)\r\n#15 0x0000000000e14f7e llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe14f7e)\r\n#16 0x0000000004e7add0 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7add0)\r\n#17 0x0000000000904cc2 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x904cc2)\r\n#18 0x00000000008f7b4c optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8f7b4c)\r\n#19 0x000074d0dce29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#20 0x000074d0dce29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#21 0x00000000008ef61e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8ef61e)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139\r\n```\r\nGodbolt: https://godbolt.org/z/MGefYs3M5", "author": "Zentrik", "labels": [ "release:backport", "vectorizers", "crash" ], "comments": [ { "author": "Heresh83", "body": "> Runnning vector-combine pass on \n> ```llvm\n> source_filename = \"text\"\n> target datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:10:11:12:13\"\n> target triple = \"x86_64-unknown-linux-gnu\"\n> \n> define nonnull ptr addrspace(10) @wombat() {\n> %call = call <4 x i64> @llvm.fshl.v4i64(<4 x i64> zeroinitializer, <4 x i64> zeroinitializer, <4 x i64> <i64 45, i64 45, i64 45, i64 45>) [ \"jl_roots\"(ptr addrspace(10) null, ptr addrspace(10) null) ]\n> %shufflevector = shufflevector <4 x i64> %call, <4 x i64> poison, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>\n> %shufflevector1 = shufflevector <16 x i64> %shufflevector, <16 x i64> undef, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>\n> ret ptr addrspace(10) null\n> }\n> \n> declare <4 x i64> @llvm.fshl.v4i64(<4 x i64>, <4 x i64>, <4 x i64>)\n> ```\n> produces\n> ```\n> opt: /root/llvm-project/llvm/include/llvm/Support/Casting.h:578: decltype(auto) llvm::cast(From*) [with To = llvm::FixedVectorType; From = llvm::Type]: Assertion `isa<To>(Val) && \"cast<Ty>() argument of incompatible type!\"' failed.\n> PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\n> Stack dump:\n> 0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=vector-combine <source>\n> 1.\tRunning pass \"function(vector-combine)\" on module \"<source>\"\n> 2.\tRunning pass \"vector-combine\" on function \"wombat\"\n> #0 0x0000000005079b38 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x5079b38)\n> #1 0x00000000050774ec SignalHandler(int) Signals.cpp:0:0\n> #2 0x000074d0dce42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\n> #3 0x000074d0dce969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\n> #4 0x000074d0dce42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\n> #5 0x000074d0dce287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\n> #6 0x000074d0dce2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\n> #7 0x000074d0dce39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\n> #8 0x0000000004186458 (anonymous namespace)::VectorCombine::foldShuffleToIdentity(llvm::Instruction&) VectorCombine.cpp:0:0\n> #9 0x0000000004190f01 (anonymous namespace)::VectorCombine::run()::'lambda'(llvm::Instruction&)::operator()(llvm::Instruction&) const (.isra.0) VectorCombine.cpp:0:0\n> #10 0x0000000004191c25 llvm::VectorCombinePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4191c25)\n> #11 0x0000000002f2defe llvm::detail::PassModel<llvm::Function, llvm::VectorCombinePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2f2defe)\n> #12 0x0000000004e7c978 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7c978)\n> #13 0x0000000000e157ce llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe157ce)\n> #14 0x0000000004e7b39e llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7b39e)\n> #15 0x0000000000e14f7e llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe14f7e)\n> #16 0x0000000004e7add0 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7add0)\n> #17 0x0000000000904cc2 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x904cc2)\n> #18 0x00000000008f7b4c optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8f7b4c)\n> #19 0x000074d0dce29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\n> #20 0x000074d0dce29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\n> #21 0x00000000008ef61e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8ef61e)\n> Program terminated with signal: SIGSEGV\n> Compiler returned: 139\n> ```\n> Godbolt: https://godbolt.org/z/MGefYs3M5\n\n" }, { "author": "RKSimon", "body": "Looks like foldShuffleToIdentity is attempting to fold the operand bundle on the fshl call" } ] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "e7a4d78ad328d02bf515b2fa4af8b2c188a6a636", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 21148, 21155 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "SLPVectorizerPass::vectorizeCmpInsts" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/slp-deleted-inst.ll", "commands": [ "opt -S -passes=slp-vectorizer < %s" ], "tests": [ { "test_name": "foo", "test_body": "define void @foo() {\nbb:\n br label %bb1\n\nbb1: ; preds = %bb3, %bb\n %i = phi i32 [ %i26, %bb3 ], [ 0, %bb ]\n %i2 = phi i32 [ %i24, %bb3 ], [ 0, %bb ]\n br label %bb3\n\nbb3: ; preds = %bb1\n %i4 = zext i32 %i2 to i64\n %i5 = mul i64 %i4, 0\n %i10 = or i64 0, %i5\n %i11 = trunc i64 %i10 to i32\n %i12 = and i32 %i11, 0\n %i13 = zext i32 %i to i64\n %i14 = mul i64 %i13, 0\n %i19 = or i64 0, %i14\n %i20 = trunc i64 %i19 to i32\n %i21 = and i32 %i20, 0\n %i22 = or i32 %i12, %i21\n %i23 = icmp ult i32 %i22, 0\n %i24 = select i1 %i23, i32 0, i32 0\n %i25 = icmp ult i32 0, 0\n %i26 = select i1 %i25, i32 0, i32 0\n br label %bb1\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLP] Assertion `detail::isPresent(Val) && \"dyn_cast on a non-existent value\"' failed.", "body": "This IR crashes on SLP: https://llvm.godbolt.org/z/8oar4o4d1\n\n```llvm\ndefine void @foo() {\nbb:\n br label %bb1\n\nbb1: ; preds = %bb3, %bb\n %i = phi i32 [ %i26, %bb3 ], [ 0, %bb ]\n %i2 = phi i32 [ %i24, %bb3 ], [ 0, %bb ]\n br label %bb3\n\nbb3: ; preds = %bb1\n %i4 = zext i32 %i2 to i64\n %i5 = mul i64 %i4, 0\n %i10 = or i64 0, %i5\n %i11 = trunc i64 %i10 to i32\n %i12 = and i32 %i11, 0\n %i13 = zext i32 %i to i64\n %i14 = mul i64 %i13, 0\n %i19 = or i64 0, %i14\n %i20 = trunc i64 %i19 to i32\n %i21 = and i32 %i20, 0\n %i22 = or i32 %i12, %i21\n %i23 = icmp ult i32 %i22, 0\n %i24 = select i1 %i23, i32 0, i32 0\n %i25 = icmp ult i32 0, 0\n %i26 = select i1 %i25, i32 0, i32 0\n br label %bb1\n}\n```", "author": "DianQK", "labels": [ "llvm:SLPVectorizer", "crash-on-valid" ], "comments": [] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "2c8836c899015cce49a399a6bc47b260a24a22e7", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 6539, 6546 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationCostModel::getInstructionCost" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/X86/predicated-instruction-cost.ll", "commands": [ "opt -p loop-vectorize -S %s" ], "tests": [ { "test_name": "predicated_urem_shl_cost", "test_body": "target datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine void @predicated_urem_shl_cost(ptr %A, i32 %x, i1 %c) {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i32 [ 1, %entry ], [ %iv.next, %loop.latch ]\n %gep = getelementptr inbounds i32, ptr %A, i32 %iv\n %l = load i32, ptr %gep, align 4\n br i1 %c, label %then, label %loop.latch\n\nthen: ; preds = %loop.header\n %rem = urem i32 2, %x\n %shl = shl i32 %l, %rem\n br label %loop.latch\n\nloop.latch: ; preds = %then, %loop.header\n %p = phi i32 [ 0, %loop.header ], [ %shl, %then ]\n store i32 %p, ptr %gep, align 4\n %iv.next = add i32 %iv, 1\n %ec = icmp eq i32 %iv, 0\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "clang crashes at -O{2,3} on x86_64-linux-gnu: Assertion `(BestFactor.Width == LegacyVF.Width || planContainsAdditionalSimplifications(getPlanFor(BestFactor.Width), CostCtx, OrigLoop)) && \" VPlan cost model and legacy cost model disagreed\"' failed ", "body": "Compiler Explorer: https://godbolt.org/z/YhKsza3dx\r\n\r\nRelated to https://github.com/llvm/llvm-project/issues/108697, but it doesn't seem to trigger anymore with the latest build.\r\n\r\n```\r\n[519] % clangtk -v\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git 631bcbe9de13e160d427ad7452a7ef2ca67911ab)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9\r\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nCandidate multilib: .;@m64\r\nSelected multilib: .;@m64\r\n[520] % \r\n[520] % clangtk -O2 small.c\r\nclang-20: /local/suz-local/software/clangbuild/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7380: llvm::VectorizationFactor llvm::LoopVectorizationPlanner::computeBestVF(): Assertion `(BestFactor.Width == LegacyVF.Width || planContainsAdditionalSimplifications(getPlanFor(BestFactor.Width), CostCtx, OrigLoop)) && \" VPlan cost model and legacy cost model disagreed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0.\tProgram arguments: /local/suz-local/software/local/clang-trunk/bin/clang-20 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/20240927-clangtk-m64-O3-build-064435/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/20240927-clangtk-m64-O3-build-064435/delta -resource-dir /local/suz-local/software/local/clang-trunk/lib/clang/20 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/suz-local/software/local/clang-trunk/lib/clang/20/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-c6819e.o -x c small.c\r\n1.\t<eof> parser at end of file\r\n2.\tOptimizer\r\n3.\tRunning pass \"function<eager-inv>(float2int,lower-constant-intrinsics,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-verify-fixpoint>,loop-unroll<O2>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"small.c\"\r\n4.\tRunning pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"main\"\r\n #0 0x0000560d31f97bef llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x43b3bef)\r\n #1 0x0000560d31f953c4 SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007f3f4386e420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)\r\n #3 0x00007f3f432a500b raise /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1\r\n #4 0x00007f3f43284859 abort /build/glibc-LcI20x/glibc-2.31/stdlib/abort.c:81:7\r\n #5 0x00007f3f43284729 get_sysdep_segment_value /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:509:8\r\n #6 0x00007f3f43284729 _nl_load_domain /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:970:34\r\n #7 0x00007f3f43295fd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)\r\n #8 0x0000560d3393ac39 llvm::LoopVectorizationPlanner::computeBestVF() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5d56c39)\r\n #9 0x0000560d3395443b llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5d7043b)\r\n#10 0x0000560d33957301 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5d73301)\r\n#11 0x0000560d33957973 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5d73973)\r\n#12 0x0000560d334c3406 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x58df406)\r\n#13 0x0000560d31924a81 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3d40a81)\r\n#14 0x0000560d2f43df76 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x1859f76)\r\n#15 0x0000560d319233ed llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3d3f3ed)\r\n#16 0x0000560d2f43cb56 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x1858b56)\r\n#17 0x0000560d31922e21 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3d3ee21)\r\n#18 0x0000560d322504b3 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#19 0x0000560d32253a88 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x466fa88)\r\n#20 0x0000560d3293154c clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4d4d54c)\r\n#21 0x0000560d347d56cc clang::ParseAST(clang::Sema&, bool, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x6bf16cc)\r\n#22 0x0000560d32931968 clang::CodeGenAction::ExecuteAction() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4d4d968)\r\n#23 0x0000560d32bf9249 clang::FrontendAction::Execute() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5015249)\r\n#24 0x0000560d32b752fe clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4f912fe)\r\n#25 0x0000560d32ce5926 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5101926)\r\n#26 0x0000560d2f004695 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x1420695)\r\n#27 0x0000560d2effc1aa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#28 0x0000560d2f000bde clang_main(int, char**, llvm::ToolContext const&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x141cbde)\r\n#29 0x0000560d2eeed47b main (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x130947b)\r\n#30 0x00007f3f43286083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3\r\n#31 0x0000560d2effbc3e _start (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x1417c3e)\r\nclangtk: error: unable to execute command: Aborted\r\nclangtk: error: clang frontend command failed due to signal (use -v to see invocation)\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git 631bcbe9de13e160d427ad7452a7ef2ca67911ab)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nclangtk: note: diagnostic msg: \r\n********************\r\n\r\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\r\nPreprocessed source(s) and associated run script(s) are located at:\r\nclangtk: note: diagnostic msg: /tmp/small-49ab95.c\r\nclangtk: note: diagnostic msg: /tmp/small-49ab95.sh\r\nclangtk: note: diagnostic msg: \r\n\r\n********************\r\n[521] % \r\n[521] % cat small.c\r\nint a, b, c, e, f, i, g, h, k, l, m;\r\nunsigned d;\r\nvolatile int j;\r\nint n(short o) { return o ? a % o : 0; }\r\nint main() {\r\n short q;\r\n if (h)\r\n while (1)\r\n ;\r\nr:\r\n e && j;\r\n if (a && j)\r\n goto r;\r\ns:\r\n while (g)\r\n if (l)\r\n goto s;\r\n for (; i; i++) {\r\n f = !d ? : 2 % d;\r\n q = f > 1 ? 0 : c << f;\r\n m = q;\r\n b = n(k ^ q);\r\n }\r\n return 0;\r\n}\r\n```\r\n", "author": "zhendongsu", "labels": [ "regression", "vectorizers", "confirmed", "crash" ], "comments": [ { "author": "shafik", "body": "This looks like a regression in trunk: https://godbolt.org/z/c5Wxf5Teh\r\n\r\nI know godbolt does not have clang assertions build beyond trunk but you can use clang++ and just use `-x c` to check out if the assert exists in previous versions.\r\n\r\nCC @fhahn " }, { "author": "zhendongsu", "body": "> I know godbolt does not have clang assertions build beyond trunk but you can use clang++ and just use `-x c` to check out if the assert exists in previous versions.\r\n\r\n@shafik: Thanks for the tip!\r\n\r\n" } ] }

[ "llvm/test/Analysis/BasicAA" ]

{ "fix_commit": "ebab105670a409e426ddcb0278578711a622b1b2", "components": [ "IR", "ValueTracking" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": [ [ 6403, 6411 ] ], "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": [ [ 652, 660 ] ], "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": [ "llvm::getUnderlyingObject" ], "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": [ "stripPointerCastsAndOffsets" ], "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Analysis/BasicAA/ptr-vector.ll", "commands": [ "opt -S -passes=licm < %s 2>&1" ], "tests": [ { "test_name": "test", "test_body": "@c = dso_local global i32 0, align 4\n@d = dso_local local_unnamed_addr global ptr @c, align 8\n\ndefine i32 @main() {\nentry:\n br label %for.cond\n\nfor.cond: ; preds = %f.exit.split, %entry\n %b.0 = phi i32 [ 0, %entry ], [ %inc6, %f.exit.split ]\n %cmp = icmp ult i32 %b.0, 2\n br i1 %cmp, label %for.cond1.preheader, label %for.cond.cleanup\n\nfor.cond1.preheader: ; preds = %for.cond\n br label %for.cond1\n\nfor.cond.cleanup: ; preds = %for.cond\n %0 = load i32, ptr @c, align 4, !tbaa !13\n %retval = xor i32 %0, 7\n ret i32 %retval\n\nfor.cond1: ; preds = %for.cond1, %for.cond1.preheader\n %i.0 = phi i32 [ %inc, %for.cond1 ], [ 0, %for.cond1.preheader ]\n %cmp2 = icmp ult i32 %i.0, 2\n %inc = add nuw nsw i32 %i.0, 1\n br i1 %cmp2, label %for.cond1, label %for.body.i.preheader, !llvm.loop !17\n\nfor.body.i.preheader: ; preds = %for.cond1\n %cmp2.lcssa = phi i1 [ %cmp2, %for.cond1 ]\n %1 = xor i1 %cmp2.lcssa, true\n %2 = bitcast i1 %1 to <1 x i1>\n %3 = call <1 x ptr> @llvm.masked.load.v1p0.p0(ptr @d, i32 8, <1 x i1> %2, <1 x ptr> poison), !tbaa !9\n %4 = bitcast <1 x ptr> %3 to ptr\n store i32 0, ptr @c, align 4, !tbaa !13\n %5 = load i32, ptr %4, align 4, !tbaa !13\n %tobool1.not.i = icmp ne i32 %5, 0\n %tobool1.not.i.fr = freeze i1 %tobool1.not.i\n br i1 %tobool1.not.i.fr, label %f.exit.split, label %for.body.i.preheader.split\n\nfor.body.i.preheader.split: ; preds = %for.body.i.preheader\n br label %for.body.i\n\nfor.body.i: ; preds = %for.body.i.preheader.split, %for.body.i\n %n.04.i = phi i8 [ %add.i, %for.body.i ], [ -66, %for.body.i.preheader.split ]\n %add.i = add nsw i8 %n.04.i, 1\n %tobool.not.i = icmp eq i8 %add.i, 0\n br i1 %tobool.not.i, label %f.exit, label %for.body.i, !llvm.loop !15\n\nf.exit: ; preds = %for.body.i\n br label %f.exit.split\n\nf.exit.split: ; preds = %for.body.i.preheader, %f.exit\n store i32 7, ptr %4, align 4, !tbaa !13\n %inc6 = add nuw nsw i32 %b.0, 1\n br label %for.cond, !llvm.loop !18\n}\n\n!9 = !{!10, !10, i64 0}\n!10 = !{!\"any pointer\", !11, i64 0}\n!11 = !{!\"omnipotent char\", !12, i64 0}\n!12 = !{!\"Simple C/C++ TBAA\"}\n!13 = !{!14, !14, i64 0}\n!14 = !{!\"int\", !11, i64 0}\n!15 = distinct !{!15, !16}\n!16 = !{!\"llvm.loop.mustprogress\"}\n!17 = distinct !{!17, !16}\n!18 = distinct !{!18, !16}", "additional_args": null, "lli_expected_out": "" } ] } ]

{ "title": "[LICM] Miscompilation caused by wrong AA result", "body": "Reproducer: https://godbolt.org/z/Y1vvbndf8\r\n```\r\n@c = dso_local global i32 0, align 4\r\n@d = dso_local local_unnamed_addr global ptr @c, align 8\r\n\r\ndefine i32 @main() {\r\nentry:\r\n br label %for.cond\r\n\r\nfor.cond: ; preds = %f.exit.split, %entry\r\n %b.0 = phi i32 [ 0, %entry ], [ %inc6, %f.exit.split ]\r\n %cmp = icmp ult i32 %b.0, 2\r\n br i1 %cmp, label %for.cond1.preheader, label %for.cond.cleanup\r\n\r\nfor.cond1.preheader: ; preds = %for.cond\r\n br label %for.cond1\r\n\r\nfor.cond.cleanup: ; preds = %for.cond\r\n %0 = load i32, ptr @c, align 4, !tbaa !13\r\n ret i32 %0\r\n\r\nfor.cond1: ; preds = %for.cond1, %for.cond1.preheader\r\n %i.0 = phi i32 [ %inc, %for.cond1 ], [ 0, %for.cond1.preheader ]\r\n %cmp2 = icmp ult i32 %i.0, 2\r\n %inc = add nuw nsw i32 %i.0, 1\r\n br i1 %cmp2, label %for.cond1, label %for.body.i.preheader, !llvm.loop !17\r\n\r\nfor.body.i.preheader: ; preds = %for.cond1\r\n %cmp2.lcssa = phi i1 [ %cmp2, %for.cond1 ]\r\n %1 = xor i1 %cmp2.lcssa, true\r\n %2 = bitcast i1 %1 to <1 x i1>\r\n %3 = call <1 x ptr> @llvm.masked.load.v1p0.p0(ptr @d, i32 8, <1 x i1> %2, <1 x ptr> poison), !tbaa !9\r\n %4 = bitcast <1 x ptr> %3 to ptr\r\n store i32 0, ptr @c, align 4, !tbaa !13\r\n %5 = load i32, ptr %4, align 4, !tbaa !13\r\n %tobool1.not.i = icmp ne i32 %5, 0\r\n %tobool1.not.i.fr = freeze i1 %tobool1.not.i\r\n br i1 %tobool1.not.i.fr, label %f.exit.split, label %for.body.i.preheader.split\r\n\r\nfor.body.i.preheader.split: ; preds = %for.body.i.preheader\r\n br label %for.body.i\r\n\r\nfor.body.i: ; preds = %for.body.i.preheader.split, %for.body.i\r\n %n.04.i = phi i8 [ %add.i, %for.body.i ], [ -66, %for.body.i.preheader.split ]\r\n %add.i = add nsw i8 %n.04.i, 1\r\n %tobool.not.i = icmp eq i8 %add.i, 0\r\n br i1 %tobool.not.i, label %f.exit, label %for.body.i, !llvm.loop !15\r\n\r\nf.exit: ; preds = %for.body.i\r\n br label %f.exit.split\r\n\r\nf.exit.split: ; preds = %for.body.i.preheader, %f.exit\r\n store i32 7, ptr %4, align 4, !tbaa !13\r\n %inc6 = add nuw nsw i32 %b.0, 1\r\n br label %for.cond, !llvm.loop !18\r\n}\r\n\r\n!9 = !{!10, !10, i64 0}\r\n!10 = !{!\"any pointer\", !11, i64 0}\r\n!11 = !{!\"omnipotent char\", !12, i64 0}\r\n!12 = !{!\"Simple C/C++ TBAA\"}\r\n!13 = !{!14, !14, i64 0}\r\n!14 = !{!\"int\", !11, i64 0}\r\n!15 = distinct !{!15, !16}\r\n!16 = !{!\"llvm.loop.mustprogress\"}\r\n!17 = distinct !{!17, !16}\r\n!18 = distinct !{!18, !16}\r\n```\r\nAfter LICM:\r\n```\r\nsource_filename = \"/app/example.ll\"\r\n\r\ndefine i32 @main() {\r\nentry:\r\n br label %for.cond\r\n\r\nfor.cond: ; preds = %f.exit.split, %entry\r\n %0 = phi i32 [ poison, %entry ], [ 0, %f.exit.split ]\r\n %b.0 = phi i32 [ 0, %entry ], [ %inc6, %f.exit.split ]\r\n %cmp = icmp ult i32 %b.0, 2\r\n br i1 %cmp, label %for.cond1.preheader, label %for.cond.cleanup\r\n\r\nfor.cond1.preheader: ; preds = %for.cond\r\n br label %for.cond1\r\n\r\nfor.cond.cleanup: ; preds = %for.cond\r\n %.lcssa = phi i32 [ %0, %for.cond ]\r\n store i32 %.lcssa, ptr @c, align 4, !tbaa !0\r\n %1 = load i32, ptr @c, align 4, !tbaa !0\r\n ret i32 %1\r\n\r\nfor.cond1: ; preds = %for.cond1, %for.cond1.preheader\r\n %i.0 = phi i32 [ %inc, %for.cond1 ], [ 0, %for.cond1.preheader ]\r\n %cmp2 = icmp ult i32 %i.0, 2\r\n %inc = add nuw nsw i32 %i.0, 1\r\n br i1 %cmp2, label %for.cond1, label %for.body.i.preheader, !llvm.loop !4\r\n\r\nfor.body.i.preheader: ; preds = %for.cond1\r\n %cmp2.lcssa = phi i1 [ %cmp2, %for.cond1 ]\r\n %2 = xor i1 %cmp2.lcssa, true\r\n %3 = bitcast i1 %2 to <1 x i1>\r\n %4 = call <1 x ptr> @llvm.masked.load.v1p0.p0(ptr @d, i32 8, <1 x i1> %3, <1 x ptr> poison), !tbaa !6\r\n %5 = bitcast <1 x ptr> %4 to ptr\r\n %6 = load i32, ptr %5, align 4, !tbaa !0\r\n %tobool1.not.i = icmp ne i32 %6, 0\r\n %tobool1.not.i.fr = freeze i1 %tobool1.not.i\r\n br i1 %tobool1.not.i.fr, label %f.exit.split, label %for.body.i.preheader.split\r\n\r\nfor.body.i.preheader.split: ; preds = %for.body.i.preheader\r\n br label %for.body.i\r\n\r\nfor.body.i: ; preds = %for.body.i, %for.body.i.preheader.split\r\n %n.04.i = phi i8 [ %add.i, %for.body.i ], [ -66, %for.body.i.preheader.split ]\r\n %add.i = add nsw i8 %n.04.i, 1\r\n %tobool.not.i = icmp eq i8 %add.i, 0\r\n br i1 %tobool.not.i, label %f.exit, label %for.body.i, !llvm.loop !8\r\n\r\nf.exit: ; preds = %for.body.i\r\n br label %f.exit.split\r\n\r\nf.exit.split: ; preds = %f.exit, %for.body.i.preheader\r\n store i32 7, ptr %5, align 4, !tbaa !0\r\n %inc6 = add nuw nsw i32 %b.0, 1\r\n br label %for.cond, !llvm.loop !9\r\n}\r\n\r\ndeclare <1 x ptr> @llvm.masked.load.v1p0.p0(ptr nocapture, i32 immarg, <1 x i1>, <1 x ptr>) #0\r\n\r\nattributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: read) }\r\n\r\n!0 = !{!1, !1, i64 0}\r\n!1 = !{!\"int\", !2, i64 0}\r\n!2 = !{!\"omnipotent char\", !3, i64 0}\r\n!3 = !{!\"Simple C/C++ TBAA\"}\r\n!4 = distinct !{!4, !5}\r\n!5 = !{!\"llvm.loop.mustprogress\"}\r\n!6 = !{!7, !7, i64 0}\r\n!7 = !{!\"any pointer\", !2, i64 0}\r\n!8 = distinct !{!8, !5}\r\n!9 = distinct !{!9, !5}\r\n```\r\n```\r\n> lli test.ll\r\n> echo $?\r\n7\r\n> bin/opt -passes=licm test.ll -S -o out.ll\r\n> lli out.ll\r\n> echo $?\r\n0\r\n```\r\n`store i32 7, ptr %5, align 4, !tbaa !0` may write something to `@c`. So this transform is incorrect.\r\n\r\nRelated patch: https://github.com/llvm/llvm-project/pull/96878\r\nOriginal C code (needs x86 +cf or riscv +zicldst):\r\n```\r\n#include \"csmith.h\"\r\nuint32_t c = 0;\r\nint32_t *d = &c;\r\nvoid f(int32_t *o) {\r\n uint8_t n;\r\n for (n = 190; n; n += 1) {\r\n *o = 0;\r\n if (*d)\r\n break;\r\n }\r\n}\r\nint main() {\r\n for (int b = 0; b <= 1; b++) {\r\n uint64_t j[2];\r\n int i;\r\n for (i = 0; i < 2; i++)\r\n j[i] = 1;\r\n f(&c);\r\n safe_add_func_int32_t_s_s(0, j[1]);\r\n *d = 7;\r\n }\r\n printf(\"%d\\n\", c);\r\n return 0;\r\n}\r\n```\r\n\r\ncc @nikic @fhahn @KanRobert \r\n", "author": "dtcxzyw", "labels": [ "miscompilation", "TBAA", "llvm:ir", "llvm:analysis" ], "comments": [ { "author": "KanRobert", "body": "Which patch supports `zicldst` for riscv? @dtcxzyw " }, { "author": "nikic", "body": "Hm, we probably have a lot of places that don't handle things like `bitcast <1 x ptr> %3 to ptr` correctly, and assume that bitcast of pointer is always a pointer to pointer cast." }, { "author": "dtcxzyw", "body": "> Which patch supports `zicldst` for riscv? @dtcxzyw\r\n\r\nWe have a prototype which is still working in progress:\r\n+ llvm support: https://github.com/llvm/llvm-project/compare/main...dtcxzyw:llvm-project:zicldst-support\r\n+ qemu support: https://github.com/qemu/qemu/compare/master...cyyself:qemu:exp_rv_zicldst\r\n" } ] }

[ "llvm/test/DebugInfo" ]

{ "fix_commit": "5b342e6041f8567a39354ae3c5346cf74b3bb84f", "components": [ "IR" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": [ [ 293, 299 ], [ 4886, 4893 ] ], "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, 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"llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/DebugInfo/dpvalue-print-nocrash.ll", "commands": [ "opt -passes=\"instcombine\" -debug %s -o /dev/null 2>&1" ], "tests": [ { "test_name": "<module>", "test_body": ";; Tests that we can debug-print DPValues that have no markers attached.\n; REQUIRES: asserts\n\n\ndefine ptr @func_10(i32 %p_11) {\nentry:\n %conv108 = zext i32 %p_11 to i64\n tail call void @llvm.dbg.value(metadata i64 %conv108, metadata !4, metadata !DIExpression()), !dbg !12\n br label %func_29.exit\n\nfunc_29.exit: ; preds = %entry\n store i64 %conv108, ptr null, align 1\n ret ptr null\n}\n\ndeclare void @llvm.dbg.value(metadata, metadata, metadata)\n\n!llvm.dbg.cu = !{!0}\n!llvm.module.flags = !{!3}\n\n!0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: \"clang\", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, retainedTypes: !2, globals: !2, splitDebugInlining: false, nameTableKind: None)\n!1 = !DIFile(filename: \"csmith5961503756960.c\", directory: \"/llvm\")\n!2 = !{}\n!3 = !{i32 2, !\"Debug Info Version\", i32 3}\n!4 = !DILocalVariable(name: \"p_31\", arg: 2, scope: !5, file: !1, line: 148, type: !7)\n!5 = distinct !DISubprogram(name: \"func_29\", scope: !1, file: !1, line: 148, type: !6, scopeLine: 149, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)\n!6 = !DISubroutineType(types: !2)\n!7 = !DIDerivedType(tag: DW_TAG_typedef, name: \"uint64_t\", file: !8, line: 60, baseType: !9)\n!8 = !DIFile(filename: \"/foo/_stdint.h\", directory: \"\")\n!9 = !DIDerivedType(tag: DW_TAG_typedef, name: \"__uint64_t\", file: !10, line: 108, baseType: !11)\n!10 = !DIFile(filename: \"/foo/_default_types.h\", directory: \"\")\n!11 = !DIBasicType(name: \"unsigned long long\", size: 64, encoding: DW_ATE_unsigned)\n!12 = !DILocation(line: 0, scope: !5)", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "opt -passes=\"instcombine\" -debug crashes with non-instrinsic debug-info", "body": "llvm commit: d61864f813e3\r\nReproduce with:\r\n```\r\nopt -passes=\"instcombine\" -debug bbi-92509.ll -o /dev/null\r\n```\r\n[bbi-92509.ll.gz](https://github.com/llvm/llvm-project/files/14329283/bbi-92509.ll.gz)\r\n\r\nResult:\r\n```\r\nINSTCOMBINE ITERATION #1 on func_10\r\nADD: ret ptr null\r\nADD: store i64 %conv108, ptr null, align 1\r\nADD: br label %func_29.exit\r\nADD: %conv108 = zext i32 %p_11 to i64\r\nCLONE: PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: ../../main-github/llvm/build-all/bin/opt -passes=instcombine -debug bbi-92509.ll -o /dev/null\r\n #0 0x000055e12968f4a7 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (../../main-github/llvm/build-all/bin/opt+0x3db14a7)\r\n #1 0x000055e12968cf7e llvm::sys::RunSignalHandlers() (../../main-github/llvm/build-all/bin/opt+0x3daef7e)\r\n #2 0x000055e12968fe6f SignalHandler(int) Signals.cpp:0:0\r\n #3 0x00007fdf33999630 __restore_rt sigaction.c:0:0\r\n #4 0x000055e12971f8e0 llvm::DPMarker::getParent() const (../../main-github/llvm/build-all/bin/opt+0x3e418e0)\r\n #5 0x000055e129761abf llvm::DPValue::print(llvm::raw_ostream&, bool) const (../../main-github/llvm/build-all/bin/opt+0x3e83abf)\r\n #6 0x000055e12a244957 llvm::InstCombinerImpl::tryToSinkInstructionDPValues(llvm::Instruction*, llvm::ilist_iterator_w_bits<llvm::ilist_detail::node_options<llvm::Instruction, true, false, void, true>, false, false>, llvm::BasicBlock*, llvm::BasicBlock*, llvm::SmallVectorImpl<llvm::DPValue*>&) InstructionCombining.cpp:0:0\r\n #7 0x000055e12a242b0c llvm::InstCombinerImpl::tryToSinkInstruction(llvm::Instruction*, llvm::BasicBlock*) InstructionCombining.cpp:0:0\r\n #8 0x000055e12a2453fc llvm::InstCombinerImpl::run() InstructionCombining.cpp:0:0\r\n #9 0x000055e12a248c79 combineInstructionsOverFunction(llvm::Function&, llvm::InstructionWorklist&, llvm::AAResults*, llvm::AssumptionCache&, llvm::TargetLibraryInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::OptimizationRemarkEmitter&, llvm::BlockFrequencyInfo*, llvm::ProfileSummaryInfo*, llvm::LoopInfo*, llvm::InstCombineOptions const&) InstructionCombining.cpp:0:0\r\n#10 0x000055e12a2482ea llvm::InstCombinePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (../../main-github/llvm/build-all/bin/opt+0x496a2ea)\r\n#11 0x000055e12a95e5bd llvm::detail::PassModel<llvm::Function, llvm::InstCombinePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) PassBuilderPipelines.cpp:0:0\r\n#12 0x000055e12989a8e4 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (../../main-github/llvm/build-all/bin/opt+0x3fbc8e4)\r\n#13 0x000055e12a9644dd llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) PassBuilderPipelines.cpp:0:0\r\n#14 0x000055e12989f9ae llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (../../main-github/llvm/build-all/bin/opt+0x3fc19ae)\r\n#15 0x000055e12a95dd9d llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) PassBuilderPipelines.cpp:0:0\r\n#16 0x000055e129899456 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (../../main-github/llvm/build-all/bin/opt+0x3fbb456)\r\n#17 0x000055e12a90a42b llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (../../main-github/llvm/build-all/bin/opt+0x502c42b)\r\n#18 0x000055e129657a28 optMain (../../main-github/llvm/build-all/bin/opt+0x3d79a28)\r\n#19 0x00007fdf310cc555 __libc_start_main (/lib64/libc.so.6+0x22555)\r\n#20 0x000055e129651369 _start (../../main-github/llvm/build-all/bin/opt+0x3d73369)\r\nSegmentation fault (core dumped)\r\n```\r\n\r\nThis starts happening with a93a4ec7dd205\r\n```\r\nReapply \"[DebugInfo][RemoveDIs] Turn on non-instrinsic debug-info by default\"\r\n```\r\n", "author": "mikaelholmen", "labels": [ "debuginfo", "llvm:crash", "llvm:ir" ], "comments": [ { "author": "SLTozer", "body": "Should be fixed by: [5b342e6](https://github.com/llvm/llvm-project/commit/5b342e6041f8567a39354ae3c5346cf74b3bb84f)" }, { "author": "mikaelholmen", "body": "> Should be fixed by: [5b342e6](https://github.com/llvm/llvm-project/commit/5b342e6041f8567a39354ae3c5346cf74b3bb84f)\r\n\r\nYep, thanks!" } ] }

[ "llvm/test/Transforms/GVN", "llvm/test/Transforms/NewGVN" ]

{ "fix_commit": "f16bff1261a92169992c6edf6bc6b38d1c815c8d", "components": [ "GVN", "NewGVN", "Local" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": [ [ 2189, 2194 ], [ 2734, 2740 ], [ 3000, 3006 ] ], "llvm/lib/Transforms/Scalar/NewGVN.cpp": [ [ 3854, 3859 ], [ 3963, 3968 ], [ 4069, 4076 ], [ 4112, 4128 ] ], "llvm/lib/Transforms/Utils/Local.cpp": [ [ 3508, 3513 ] ], "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": [ "GVNPass::performScalarPRE", "GVNPass::processAssumeIntrinsic", "GVNPass::processInstruction", "patchAndReplaceAllUsesWith" ], "llvm/lib/Transforms/Scalar/NewGVN.cpp": [ "NewGVN::eliminateInstructions", "NewGVN::findPHIOfOpsLeader" ], "llvm/lib/Transforms/Utils/Local.cpp": [ "llvm::patchReplacementInstruction" ], "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/GVN/pr113997.ll", "commands": [ "opt -S -passes=gvn < %s" ], "tests": [ { "test_name": "bucket", "test_body": "define i1 @bucket(i32 noundef %x) {\n %cmp1 = icmp sgt i32 %x, 0\n %ctpop1 = tail call range(i32 1, 32) i32 @llvm.ctpop.i32(i32 %x)\n %cmp2 = icmp samesign ult i32 %ctpop1, 2\n %cond = select i1 %cmp1, i1 %cmp2, i1 false\n br i1 %cond, label %if.then, label %if.else\n\nif.else: ; preds = %0\n %ctpop2 = tail call range(i32 0, 33) i32 @llvm.ctpop.i32(i32 %x)\n %res = icmp eq i32 %ctpop2, 1\n ret i1 %res\n\nif.then: ; preds = %0\n ret i1 false\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/NewGVN/pr113997.ll", "commands": [ "opt -S -passes=newgvn < %s" ], "tests": [ { "test_name": "bucket", "test_body": "define i1 @bucket(i32 noundef %x) {\n %cmp1 = icmp sgt i32 %x, 0\n %ctpop1 = tail call range(i32 1, 32) i32 @llvm.ctpop.i32(i32 %x)\n %cmp2 = icmp samesign ult i32 %ctpop1, 2\n %cond = select i1 %cmp1, i1 %cmp2, i1 false\n br i1 %cond, label %if.then, label %if.else\n\nif.else: ; preds = %0\n %ctpop2 = tail call range(i32 0, 33) i32 @llvm.ctpop.i32(i32 %x)\n %res = icmp eq i32 %ctpop2, 1\n ret i1 %res\n\nif.then: ; preds = %0\n ret i1 false\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[GVNPass] Range attribute should be handled after CSE", "body": "Reproducer: https://alive2.llvm.org/ce/z/HAnoKn\r\n```\r\ndefine i1 @src(i32 noundef %x) {\r\n %cmp1 = icmp sgt i32 %x, 0\r\n %ctpop1 = tail call range(i32 1, 32) i32 @llvm.ctpop.i32(i32 %x)\r\n %cmp2 = icmp samesign ult i32 %ctpop1, 2\r\n %cond = select i1 %cmp1, i1 %cmp2, i1 false\r\n br i1 %cond, label %if.then, label %if.else\r\n\r\nif.else:\r\n %ctpop2 = tail call range(i32 0, 33) i32 @llvm.ctpop.i32(i32 %x)\r\n %res = icmp eq i32 %ctpop2, 1\r\n ret i1 %res\r\n\r\nif.then:\r\n ret i1 false\r\n}\r\n\r\ndefine i1 @tgt(i32 noundef %x) {\r\n %cmp1 = icmp sgt i32 %x, 0\r\n %ctpop1 = tail call range(i32 1, 32) i32 @llvm.ctpop.i32(i32 %x)\r\n %cmp2 = icmp samesign ult i32 %ctpop1, 2\r\n %cond = select i1 %cmp1, i1 %cmp2, i1 false\r\n br i1 %cond, label %if.then, label %if.else\r\n\r\nif.else:\r\n %res = icmp eq i32 %ctpop1, 1\r\n ret i1 %res\r\n\r\nif.then:\r\n ret i1 false\r\n}\r\n```\r\n```\r\n\r\n----------------------------------------\r\ndefine i1 @src(i32 noundef %x) {\r\n#0:\r\n %cmp1 = icmp sgt i32 noundef %x, 0\r\n %ctpop1 = ctpop i32 noundef %x\r\n %#range_0_%ctpop1 = !range i32 %ctpop1, i32 1, i32 32\r\n %cmp2 = icmp samesign ult i32 %#range_0_%ctpop1, 2\r\n %cond = select i1 %cmp1, i1 %cmp2, i1 0\r\n br i1 %cond, label %if.then, label %if.else\r\n\r\nif.else:\r\n %ctpop2 = ctpop i32 noundef %x\r\n %#range_1_%ctpop2 = !range i32 %ctpop2, i32 0, i32 33\r\n %res = icmp eq i32 %#range_1_%ctpop2, 1\r\n ret i1 %res\r\n\r\nif.then:\r\n ret i1 0\r\n}\r\n=>\r\ndefine i1 @tgt(i32 noundef %x) {\r\n#0:\r\n %cmp1 = icmp sgt i32 noundef %x, 0\r\n %ctpop1 = ctpop i32 noundef %x\r\n %#range_0_%ctpop1 = !range i32 %ctpop1, i32 1, i32 32\r\n %cmp2 = icmp samesign ult i32 %#range_0_%ctpop1, 2\r\n %cond = select i1 %cmp1, i1 %cmp2, i1 0\r\n br i1 %cond, label %if.then, label %if.else\r\n\r\nif.else:\r\n %res = icmp eq i32 %#range_0_%ctpop1, 1\r\n ret i1 %res\r\n\r\nif.then:\r\n ret i1 0\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Target is more poisonous than source\r\n\r\nExample:\r\ni32 noundef %x = #x00000000 (0)\r\n\r\nSource:\r\ni1 %cmp1 = #x0 (0)\r\ni32 %ctpop1 = #x00000000 (0)\r\ni32 %#range_0_%ctpop1 = poison\r\ni1 %cmp2 = poison\r\ni1 %cond = #x0 (0)\r\n >> Jump to %if.else\r\ni32 %ctpop2 = #x00000000 (0)\r\ni32 %#range_1_%ctpop2 = #x00000000 (0)\r\ni1 %res = #x0 (0)\r\n\r\nTarget:\r\ni1 %cmp1 = #x0 (0)\r\ni32 %ctpop1 = #x00000000 (0)\r\ni32 %#range_0_%ctpop1 = poison\r\ni1 %cmp2 = poison\r\ni1 %cond = #x0 (0)\r\n >> Jump to %if.else\r\ni1 %res = poison\r\nSource value: #x0 (0)\r\nTarget value: poison\r\n```\r\n\r\nReported by @pranavk. See https://github.com/llvm/llvm-project/pull/100899#issuecomment-2442780517.\r\n", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:GVN" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "030829a7e53fad0eab9b87b5dd49427e9fb13303", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 15483, 15488 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::vectorizeTree" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/buildvector-schedule-for-subvector.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu -slp-threshold=-99999 < %s" ], "tests": [ { "test_name": "test", "test_body": "define i1 @test() {\nentry:\n %and.i1698.1.i = zext i16 0 to i32\n %and19.i1699.2.i = and i32 %and.i1698.1.i, 0\n %and.i1698.2.i = zext i16 0 to i32\n %cmp25.i1700.2.i2 = icmp samesign uge i32 %and19.i1699.2.i, %and.i1698.1.i\n %and19.i1699.11841.i = and i32 %and.i1698.2.i, 0\n %cmp25.i1700.11842.i3 = icmp samesign uge i32 %and19.i1699.11841.i, %and.i1698.2.i\n %and.i1698.1.1.i = zext i16 0 to i32\n %and19.i1699.2.1.i = and i32 %and.i1698.1.1.i, 0\n %0 = add i16 1, 0\n %and.i1698.2.1.i = zext i16 %0 to i32\n %cmp25.i1700.2.1.i4 = icmp samesign uge i32 %and19.i1699.2.1.i, %and.i1698.1.1.i\n %and19.i1699.21846.i = and i32 %and.i1698.2.1.i, 0\n %cmp25.i1700.21847.i = icmp samesign uge i32 %and19.i1699.21846.i, %and.i1698.2.1.i\n ret i1 %cmp25.i1700.21847.i\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLPVectorizer] `samesign` flags should be dropped after narrowing down the width of operands", "body": "Reproducer: https://alive2.llvm.org/ce/z/AvBhy9\n```\n; bin/opt -passes=slp-vectorizer test.ll -S\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine i1 @test() {\nentry:\n %and.i1698.1.i = zext i16 0 to i32\n %and19.i1699.2.i = and i32 %and.i1698.1.i, 0\n %and.i1698.2.i = zext i16 0 to i32\n %cmp25.i1700.2.i2 = icmp samesign uge i32 %and19.i1699.2.i, %and.i1698.1.i\n %and19.i1699.11841.i = and i32 %and.i1698.2.i, 0\n %cmp25.i1700.11842.i3 = icmp samesign uge i32 %and19.i1699.11841.i, %and.i1698.2.i\n %and.i1698.1.1.i = zext i16 0 to i32\n %and19.i1699.2.1.i = and i32 %and.i1698.1.1.i, 0\n %0 = add i16 1, 0\n %and.i1698.2.1.i = zext i16 %0 to i32\n %cmp25.i1700.2.1.i4 = icmp samesign uge i32 %and19.i1699.2.1.i, %and.i1698.1.1.i\n %and19.i1699.21846.i = and i32 %and.i1698.2.1.i, 0\n %cmp25.i1700.21847.i = icmp samesign uge i32 %and19.i1699.21846.i, %and.i1698.2.1.i\n ret i1 %cmp25.i1700.21847.i\n}\n```\n```\ndefine i1 @test() {\nentry:\n %0 = add i16 1, 0\n %1 = insertelement <4 x i16> <i16 poison, i16 0, i16 0, i16 0>, i16 %0, i32 0\n %2 = trunc <4 x i16> %1 to <4 x i1>\n %3 = and <4 x i1> %2, zeroinitializer\n %4 = icmp samesign uge <4 x i1> %3, %2\n %5 = extractelement <4 x i1> %4, i32 0\n ret i1 %5\n}\n```\n```\n\n----------------------------------------\ndefine i1 @src() {\nentry:\n %#0 = add i16 1, 0\n %and.i1698.2.1.i = zext i16 %#0 to i32\n %and19.i1699.21846.i = and i32 %and.i1698.2.1.i, 0\n %cmp25.i1700.21847.i = icmp samesign uge i32 %and19.i1699.21846.i, %and.i1698.2.1.i\n ret i1 %cmp25.i1700.21847.i\n}\n=>\ndefine i1 @src() {\nentry:\n %#0 = add i16 1, 0\n %#1 = insertelement <4 x i16> { poison, 0, 0, 0 }, i16 %#0, i32 0\n %#2 = trunc <4 x i16> %#1 to <4 x i1>\n %#3 = and <4 x i1> %#2, { 0, 0, 0, 0 }\n %#4 = icmp samesign uge <4 x i1> %#3, %#2\n %#5 = extractelement <4 x i1> %#4, i32 0\n ret i1 %#5\n}\nTransformation doesn't verify!\n\nERROR: Target is more poisonous than source\n\nExample:\n\nSource:\ni16 %#0 = #x0001 (1)\ni32 %and.i1698.2.1.i = #x00000001 (1)\ni32 %and19.i1699.21846.i = #x00000000 (0)\ni1 %cmp25.i1700.21847.i = #x0 (0)\n\nTarget:\ni16 %#0 = #x0001 (1)\n<4 x i16> %#1 = < #x0001 (1), #x0000 (0), #x0000 (0), #x0000 (0) >\n<4 x i1> %#2 = < #x1 (1), #x0 (0), #x0 (0), #x0 (0) >\n<4 x i1> %#3 = < #x0 (0), #x0 (0), #x0 (0), #x0 (0) >\n<4 x i1> %#4 = < poison, #x1 (1), #x1 (1), #x1 (1) >\ni1 %#5 = poison\nSource value: #x0 (0)\nTarget value: poison\n\nSummary:\n 0 correct transformations\n 1 incorrect transformations\n 0 failed-to-prove transformations\n 0 Alive2 errors\n```\n", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:SLPVectorizer" ], "comments": [] }

[ "llvm/test/Transforms/Reassociate" ]

{ "fix_commit": "645fb04a3389e69801d401e669eae9ee42d70217", "components": [ "Reassociate" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": [ [ 302, 399 ], [ 475, 481 ], [ 490, 497 ], [ 509, 515 ], [ 518, 525 ], [ 528, 534 ], [ 562, 568 ], [ 625, 634 ], [ 642, 648 ], [ 1188, 1195 ], [ 2368, 2374 ] ], "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": [ "CarmichaelShift", "IncorporateWeight", "LinearizeExprTree", "LowerNegateToMultiply", "ReassociatePass::ReassociateExpression", "ReassociatePass::RemoveFactorFromExpression" ], "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/Reassociate/repeats.ll", "commands": [ "opt < %s -passes=reassociate -S" ], "tests": [ { "test_name": "foo4x11", "test_body": "define i4 @foo4x11(i4 %x) {\n %tmp1 = mul i4 %x, %x\n %tmp2 = mul i4 %tmp1, %x\n %tmp3 = mul i4 %tmp2, %x\n %tmp4 = mul i4 %tmp3, %x\n %tmp5 = mul i4 %tmp4, %x\n %tmp6 = mul i4 %tmp5, %x\n %tmp7 = mul i4 %tmp6, %x\n %tmp8 = mul i4 %tmp7, %x\n %tmp9 = mul i4 %tmp8, %x\n %tmp10 = mul i4 %tmp9, %x\n ret i4 %tmp10\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "foo3x5_nsw", "test_body": "define i3 @foo3x5_nsw(i3 %x) {\n %tmp1 = mul i3 %x, %x\n %tmp2 = mul i3 %tmp1, %x\n %tmp3 = mul i3 %tmp2, %x\n %tmp4 = mul nsw i3 %tmp3, %x\n ret i3 %tmp4\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "foo3x5", "test_body": "define i3 @foo3x5(i3 %x) {\n %tmp1 = mul i3 %x, %x\n %tmp2 = mul i3 %tmp1, %x\n %tmp3 = mul i3 %tmp2, %x\n %tmp4 = mul i3 %tmp3, %x\n ret i3 %tmp4\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "foo4x10", "test_body": "define i4 @foo4x10(i4 %x) {\n %tmp1 = mul i4 %x, %x\n %tmp2 = mul i4 %tmp1, %x\n %tmp3 = mul i4 %tmp2, %x\n %tmp4 = mul i4 %tmp3, %x\n %tmp5 = mul i4 %tmp4, %x\n %tmp6 = mul i4 %tmp5, %x\n %tmp7 = mul i4 %tmp6, %x\n %tmp8 = mul i4 %tmp7, %x\n %tmp9 = mul i4 %tmp8, %x\n ret i4 %tmp9\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "foo4x13", "test_body": "define i4 @foo4x13(i4 %x) {\n %tmp1 = mul i4 %x, %x\n %tmp2 = mul i4 %tmp1, %x\n %tmp3 = mul i4 %tmp2, %x\n %tmp4 = mul i4 %tmp3, %x\n %tmp5 = mul i4 %tmp4, %x\n %tmp6 = mul i4 %tmp5, %x\n %tmp7 = mul i4 %tmp6, %x\n %tmp8 = mul i4 %tmp7, %x\n %tmp9 = mul i4 %tmp8, %x\n %tmp10 = mul i4 %tmp9, %x\n %tmp11 = mul i4 %tmp10, %x\n %tmp12 = mul i4 %tmp11, %x\n ret i4 %tmp12\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "foo4x8", "test_body": "define i4 @foo4x8(i4 %x) {\n %tmp1 = mul i4 %x, %x\n %tmp2 = mul i4 %tmp1, %x\n %tmp3 = mul i4 %tmp2, %x\n %tmp4 = mul i4 %tmp3, %x\n %tmp5 = mul i4 %tmp4, %x\n %tmp6 = mul i4 %tmp5, %x\n %tmp7 = mul i4 %tmp6, %x\n ret i4 %tmp7\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "foo4x12", "test_body": "define i4 @foo4x12(i4 %x) {\n %tmp1 = mul i4 %x, %x\n %tmp2 = mul i4 %tmp1, %x\n %tmp3 = mul i4 %tmp2, %x\n %tmp4 = mul i4 %tmp3, %x\n %tmp5 = mul i4 %tmp4, %x\n %tmp6 = mul i4 %tmp5, %x\n %tmp7 = mul i4 %tmp6, %x\n %tmp8 = mul i4 %tmp7, %x\n %tmp9 = mul i4 %tmp8, %x\n %tmp10 = mul i4 %tmp9, %x\n %tmp11 = mul i4 %tmp10, %x\n ret i4 %tmp11\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "foo4x15", "test_body": "define i4 @foo4x15(i4 %x) {\n %tmp1 = mul i4 %x, %x\n %tmp2 = mul i4 %tmp1, %x\n %tmp3 = mul i4 %tmp2, %x\n %tmp4 = mul i4 %tmp3, %x\n %tmp5 = mul i4 %tmp4, %x\n %tmp6 = mul i4 %tmp5, %x\n %tmp7 = mul i4 %tmp6, %x\n %tmp8 = mul i4 %tmp7, %x\n %tmp9 = mul i4 %tmp8, %x\n %tmp10 = mul i4 %tmp9, %x\n %tmp11 = mul i4 %tmp10, %x\n %tmp12 = mul i4 %tmp11, %x\n %tmp13 = mul i4 %tmp12, %x\n %tmp14 = mul i4 %tmp13, %x\n ret i4 %tmp14\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "foo4x9", "test_body": "define i4 @foo4x9(i4 %x) {\n %tmp1 = mul i4 %x, %x\n %tmp2 = mul i4 %tmp1, %x\n %tmp3 = mul i4 %tmp2, %x\n %tmp4 = mul i4 %tmp3, %x\n %tmp5 = mul i4 %tmp4, %x\n %tmp6 = mul i4 %tmp5, %x\n %tmp7 = mul i4 %tmp6, %x\n %tmp8 = mul i4 %tmp7, %x\n ret i4 %tmp8\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "foo4x14", "test_body": "define i4 @foo4x14(i4 %x) {\n %tmp1 = mul i4 %x, %x\n %tmp2 = mul i4 %tmp1, %x\n %tmp3 = mul i4 %tmp2, %x\n %tmp4 = mul i4 %tmp3, %x\n %tmp5 = mul i4 %tmp4, %x\n %tmp6 = mul i4 %tmp5, %x\n %tmp7 = mul i4 %tmp6, %x\n %tmp8 = mul i4 %tmp7, %x\n %tmp9 = mul i4 %tmp8, %x\n %tmp10 = mul i4 %tmp9, %x\n %tmp11 = mul i4 %tmp10, %x\n %tmp12 = mul i4 %tmp11, %x\n %tmp13 = mul i4 %tmp12, %x\n ret i4 %tmp13\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "foo3x6", "test_body": "define i3 @foo3x6(i3 %x) {\n %tmp1 = mul i3 %x, %x\n %tmp2 = mul i3 %tmp1, %x\n %tmp3 = mul i3 %tmp2, %x\n %tmp4 = mul i3 %tmp3, %x\n %tmp5 = mul i3 %tmp4, %x\n ret i3 %tmp5\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "foo3x7", "test_body": "define i3 @foo3x7(i3 %x) {\n %tmp1 = mul i3 %x, %x\n %tmp2 = mul i3 %tmp1, %x\n %tmp3 = mul i3 %tmp2, %x\n %tmp4 = mul i3 %tmp3, %x\n %tmp5 = mul i3 %tmp4, %x\n %tmp6 = mul i3 %tmp5, %x\n ret i3 %tmp6\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "incorrect reassociation at low bitwidth", "body": "here's a function:\r\n```llvm\r\ndefine i3 @f(i3 %0) {\r\n %2 = mul i3 %0, %0\r\n %3 = mul i3 %2, %0\r\n %4 = mul i3 %3, %0\r\n %5 = mul nsw i3 %4, %0\r\n ret i3 %5\r\n}\r\n```\r\n\r\nreassociate seems to be getting it wrong:\r\n```\r\nJohns-MacBook-Pro:reduce regehr$ ~/alive2-regehr/build/alive-tv reduced.ll -passes=reassociate\r\n\r\n----------------------------------------\r\ndefine i3 @f(i3 %#0) {\r\n#1:\r\n %#2 = mul i3 %#0, %#0\r\n %#3 = mul i3 %#2, %#0\r\n %#4 = mul i3 %#3, %#0\r\n %#5 = mul nsw i3 %#4, %#0\r\n ret i3 %#5\r\n}\r\n=>\r\ndefine i3 @f(i3 %#0) {\r\n#1:\r\n %#2 = mul i3 %#0, %#0\r\n %#3 = mul nsw i3 %#2, %#0\r\n ret i3 %#3\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Target is more poisonous than source\r\n\r\nExample:\r\ni3 %#0 = #x6 (6, -2)\r\n\r\nSource:\r\ni3 %#2 = #x4 (4, -4)\r\ni3 %#3 = #x0 (0)\r\ni3 %#4 = #x0 (0)\r\ni3 %#5 = #x0 (0)\r\n\r\nTarget:\r\ni3 %#2 = #x4 (4, -4)\r\ni3 %#3 = poison\r\nSource value: #x0 (0)\r\nTarget value: poison\r\n\r\nSummary:\r\n 0 correct transformations\r\n 1 incorrect transformations\r\n 0 failed-to-prove transformations\r\n 0 Alive2 errors\r\nJohns-MacBook-Pro:reduce regehr$ \r\n```\r\n\r\ncc @nunoplopes ", "author": "regehr", "labels": [ "miscompilation", "llvm:transforms" ], "comments": [ { "author": "dtcxzyw", "body": "Introduced by https://github.com/llvm/llvm-project/commit/d7aeefebd6b049f017711cd7c6ef5f217a17b673.\r\n" } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "b72689a5cbd8645c183476cd87e32948308c5b64", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 6678, 6683 ], [ 6693, 6700 ], [ 6727, 6742 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationCostModel::collectValuesToIgnore" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/RISCV/dead-ops-cost.ll", "commands": [ "opt -p loop-vectorize -mtriple riscv64-linux-gnu -mattr=+v,+f -S %s" ], "tests": [ { "test_name": "dead_live_out_due_to_scalar_epilogue_required", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\n\ndefine i8 @dead_live_out_due_to_scalar_epilogue_required(ptr %src, ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]\n %idxprom = sext i32 %iv to i64\n %gep.src = getelementptr i8, ptr %src, i64 %idxprom\n %l = load i8, ptr %gep.src, align 1\n %gep.dst = getelementptr i8, ptr %dst, i64 %idxprom\n store i8 0, ptr %gep.dst, align 1\n %iv.next = add i32 %iv, 4\n %cmp = icmp ult i32 %iv, 1001\n br i1 %cmp, label %loop, label %exit\n\nexit: ; preds = %loop\n %r = phi i8 [ %l, %loop ]\n ret i8 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "dead_load", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\n\ndefine void @dead_load(ptr %p, i16 %start) {\nentry:\n %start.ext = sext i16 %start to i64\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ %start.ext, %entry ], [ %iv.next, %loop ]\n %gep = getelementptr i16, ptr %p, i64 %iv\n store i16 0, ptr %gep, align 2\n %l = load i16, ptr %gep, align 2\n %iv.next = add i64 %iv, 3\n %cmp = icmp slt i64 %iv, 111\n br i1 %cmp, label %loop, label %exit\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/RISCV/riscv-vector-reverse.ll", "commands": [ "opt -passes=loop-vectorize,dce,instcombine -mtriple riscv64-linux-gnu -mattr=+v -debug-only=loop-vectorize -scalable-vectorization=on -riscv-v-vector-bits-min=128 -disable-output < %s 2>&1" ], "tests": [ { "test_name": "vector_reverse_i64", "test_body": "define void @vector_reverse_i64(ptr nocapture noundef writeonly %A, ptr nocapture noundef readonly %B, i32 noundef signext %n) {\nentry:\n %cmp7 = icmp sgt i32 %n, 0\n br i1 %cmp7, label %for.body.preheader, label %for.cond.cleanup\n\nfor.body.preheader: ; preds = %entry\n %0 = zext i32 %n to i64\n br label %for.body\n\nfor.cond.cleanup: ; preds = %for.body, %entry\n ret void\n\nfor.body: ; preds = %for.body, %for.body.preheader\n %indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]\n %i.0.in8 = phi i32 [ %n, %for.body.preheader ], [ %i.0, %for.body ]\n %i.0 = add nsw i32 %i.0.in8, -1\n %idxprom = zext i32 %i.0 to i64\n %arrayidx = getelementptr inbounds i32, ptr %B, i64 %idxprom\n %1 = load i32, ptr %arrayidx, align 4\n %add9 = add i32 %1, 1\n %arrayidx3 = getelementptr inbounds i32, ptr %A, i64 %idxprom\n store i32 %add9, ptr %arrayidx3, align 4\n %cmp = icmp ugt i64 %indvars.iv, 1\n %indvars.iv.next = add nsw i64 %indvars.iv, -1\n br i1 %cmp, label %for.body, label %for.cond.cleanup, !llvm.loop !0\n}\n\n!0 = distinct !{!0, !1, !2, !3, !4}\n!1 = !{!\"llvm.loop.mustprogress\"}\n!2 = !{!\"llvm.loop.vectorize.width\", i32 4}\n!3 = !{!\"llvm.loop.vectorize.scalable.enable\", i1 true}\n!4 = !{!\"llvm.loop.vectorize.enable\", i1 true}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "vector_reverse_f32", "test_body": "define void @vector_reverse_f32(ptr nocapture noundef writeonly %A, ptr nocapture noundef readonly %B, i32 noundef signext %n) {\nentry:\n %cmp7 = icmp sgt i32 %n, 0\n br i1 %cmp7, label %for.body.preheader, label %for.cond.cleanup\n\nfor.body.preheader: ; preds = %entry\n %0 = zext i32 %n to i64\n br label %for.body\n\nfor.cond.cleanup: ; preds = %for.body, %entry\n ret void\n\nfor.body: ; preds = %for.body, %for.body.preheader\n %indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]\n %i.0.in8 = phi i32 [ %n, %for.body.preheader ], [ %i.0, %for.body ]\n %i.0 = add nsw i32 %i.0.in8, -1\n %idxprom = zext i32 %i.0 to i64\n %arrayidx = getelementptr inbounds float, ptr %B, i64 %idxprom\n %1 = load float, ptr %arrayidx, align 4\n %conv1 = fadd float %1, 1.000000e+00\n %arrayidx3 = getelementptr inbounds float, ptr %A, i64 %idxprom\n store float %conv1, ptr %arrayidx3, align 4\n %cmp = icmp ugt i64 %indvars.iv, 1\n %indvars.iv.next = add nsw i64 %indvars.iv, -1\n br i1 %cmp, label %for.body, label %for.cond.cleanup, !llvm.loop !0\n}\n\n!0 = distinct !{!0, !1, !2, !3, !4}\n!1 = !{!\"llvm.loop.mustprogress\"}\n!2 = !{!\"llvm.loop.vectorize.width\", i32 4}\n!3 = !{!\"llvm.loop.vectorize.scalable.enable\", i1 true}\n!4 = !{!\"llvm.loop.vectorize.enable\", i1 true}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[VPlan] VPlan cost model and legacy cost model disagreed", "body": "Related: #99701, #92555. @fhahn Please let me know if you'd prefer these assert triggering testcases to be all in the same issue or prefer a new issue when a new testcase is found.\r\n\r\nTested using llvm f719a339a89b\r\n\r\nTestcase:\r\n```llvm ir\r\ntarget datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\r\ntarget triple = \"riscv64-unknown-linux-gnu\"\r\n\r\ndefine i32 @main(ptr %0) #0 {\r\nentry:\r\n br label %for.body\r\n\r\nfor.cond.cleanup: ; preds = %for.body\r\n %.lcssa = phi i8 [ %1, %for.body ]\r\n ret i32 0\r\n\r\nfor.body: ; preds = %for.body, %entry\r\n %l.011 = phi i32 [ 0, %entry ], [ %add, %for.body ]\r\n %idxprom = sext i32 %l.011 to i64\r\n %arrayidx1 = getelementptr [15 x i8], ptr %0, i64 0, i64 %idxprom\r\n %1 = load i8, ptr %arrayidx1, align 1\r\n %arrayidx3 = getelementptr [0 x i8], ptr null, i64 0, i64 %idxprom\r\n store i8 0, ptr %arrayidx3, align 1\r\n %add = add i32 %l.011, 4\r\n %cmp = icmp ult i32 %l.011, -9\r\n br i1 %cmp, label %for.body, label %for.cond.cleanup\r\n}\r\n\r\nattributes #0 = { \"target-features\"=\"+64bit,+a,+c,+d,+f,+m,+relax,+v,+zicsr,+zifencei,+zmmul,+zve32f,+zve32x,+zve64d,+zve64f,+zve64x,+zvl128b,+zvl32b,+zvl64b,-b,-e,-experimental-smmpm,-experimental-smnpm,-experimental-ssnpm,-experimental-sspm,-experimental-ssqosid,-experimental-supm,-experimental-zacas,-experimental-zalasr,-experimental-zicfilp,-experimental-zicfiss,-h,-shcounterenw,-shgatpa,-shtvala,-shvsatpa,-shvstvala,-shvstvecd,-smaia,-smcdeleg,-smcsrind,-smepmp,-smstateen,-ssaia,-ssccfg,-ssccptr,-sscofpmf,-sscounterenw,-sscsrind,-ssstateen,-ssstrict,-sstc,-sstvala,-sstvecd,-ssu64xl,-svade,-svadu,-svbare,-svinval,-svnapot,-svpbmt,-xcvalu,-xcvbi,-xcvbitmanip,-xcvelw,-xcvmac,-xcvmem,-xcvsimd,-xsfcease,-xsfvcp,-xsfvfnrclipxfqf,-xsfvfwmaccqqq,-xsfvqmaccdod,-xsfvqmaccqoq,-xsifivecdiscarddlone,-xsifivecflushdlone,-xtheadba,-xtheadbb,-xtheadbs,-xtheadcmo,-xtheadcondmov,-xtheadfmemidx,-xtheadmac,-xtheadmemidx,-xtheadmempair,-xtheadsync,-xtheadvdot,-xventanacondops,-xwchc,-za128rs,-za64rs,-zaamo,-zabha,-zalrsc,-zama16b,-zawrs,-zba,-zbb,-zbc,-zbkb,-zbkc,-zbkx,-zbs,-zca,-zcb,-zcd,-zce,-zcf,-zcmop,-zcmp,-zcmt,-zdinx,-zfa,-zfbfmin,-zfh,-zfhmin,-zfinx,-zhinx,-zhinxmin,-zic64b,-zicbom,-zicbop,-zicboz,-ziccamoa,-ziccif,-zicclsm,-ziccrse,-zicntr,-zicond,-zihintntl,-zihintpause,-zihpm,-zimop,-zk,-zkn,-zknd,-zkne,-zknh,-zkr,-zks,-zksed,-zksh,-zkt,-ztso,-zvbb,-zvbc,-zvfbfmin,-zvfbfwma,-zvfh,-zvfhmin,-zvkb,-zvkg,-zvkn,-zvknc,-zvkned,-zvkng,-zvknha,-zvknhb,-zvks,-zvksc,-zvksed,-zvksg,-zvksh,-zvkt,-zvl1024b,-zvl16384b,-zvl2048b,-zvl256b,-zvl32768b,-zvl4096b,-zvl512b,-zvl65536b,-zvl8192b\" }\r\n```\r\n\r\nCommand/backtrace:\r\n```\r\n> /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt -passes loop-vectorize reduced.ll -S\r\nopt: /scratch/tc-testing/tc-compiler-fuzz-trunk/llvm/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:10098: bool llvm::LoopVectorizePass::processLoop(llvm::Loop*): Assertion `VF.Width == Width && \"VPlan cost model and legacy cost model disagreed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0. Program arguments: /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt -passes loop-vectorize reduced.ll -S\r\n1. Running pass \"function(loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>)\" on module \"reduced.ll\"\r\n2. Running pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"main\"\r\n #0 0x0000647de5790dd0 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2f1ddd0)\r\n #1 0x0000647de578e1ef llvm::sys::RunSignalHandlers() (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2f1b1ef)\r\n #2 0x0000647de578e345 SignalHandler(int) Signals.cpp:0:0\r\n #3 0x00007b2a02842520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #4 0x00007b2a028969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76\r\n #5 0x00007b2a028969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10\r\n #6 0x00007b2a028969fc pthread_kill ./nptl/pthread_kill.c:89:10\r\n #7 0x00007b2a02842476 gsignal ./signal/../sysdeps/posix/raise.c:27:6\r\n #8 0x00007b2a028287f3 abort ./stdlib/abort.c:81:7\r\n #9 0x00007b2a0282871b _nl_load_domain ./intl/loadmsgcat.c:1177:9\r\n#10 0x00007b2a02839e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n#11 0x0000647de47acc98 llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x1f39c98)\r\n#12 0x0000647de47af851 llvm::LoopVectorizePass::runImpl(llvm::Function&, llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo*, llvm::TargetLibraryInfo*, llvm::DemandedBits&, llvm::AssumptionCache&, llvm::LoopAccessInfoManager&, llvm::OptimizationRemarkEmitter&, llvm::ProfileSummaryInfo*) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x1f3c851)\r\n#13 0x0000647de47affd0 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x1f3cfd0)\r\n#14 0x0000647de3621ff6 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xdaeff6)\r\n#15 0x0000647de55a8e7e llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2d35e7e)\r\n#16 0x0000647de3625186 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xdb2186)\r\n#17 0x0000647de55a7c0b llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2d34c0b)\r\n#18 0x0000647de36214d6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xdae4d6)\r\n#19 0x0000647de55a5d5d llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2d32d5d)\r\n#20 0x0000647de2e6b5d6 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x5f85d6)\r\n#21 0x0000647de2e5d211 optMain (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x5ea211)\r\n#22 0x00007b2a02829d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16\r\n#23 0x00007b2a02829e40 call_init ./csu/../csu/libc-start.c:128:20\r\n#24 0x00007b2a02829e40 __libc_start_main ./csu/../csu/libc-start.c:379:5\r\n#25 0x0000647de2e530a5 _start (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x5e00a5)\r\nzsh: IOT instruction (core dumped) /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt\r\n```\r\n\r\nGodbolt: https://godbolt.org/z/z7ee8hWWP", "author": "patrick-rivos", "labels": [ "vectorizers", "crash" ], "comments": [ { "author": "fhahn", "body": "@patrick-rivos thanks for the report. I think it would be best to keep filing separate issues, as the underlying issues usually are different. Although the fuzzers may generate many instances of the same issue as was the case for https://github.com/llvm/llvm-project/issues/99701. Not sure if there's an easy way to catch that other than waiting for a day or so after filing the first issue." } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "a001e9718fd974859f2797a9f9ed7bf87d364e4f", "components": [ "SimplifyLibCalls" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": [ [ 3735, 3760 ] ], "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": [ "LibCallSimplifier::optimizeCall" ], "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/pr77064.ll", "commands": [ "opt -S -passes=instcombine < %s" ], "tests": [ { "test_name": "main", "test_body": "define void @main(ptr %ptr) {\n %opendir = call fastcc ptr @opendir(ptr %ptr)\n %memset = call ptr @__memset_chk(ptr %opendir, i32 0, i64 596, i64 -1)\n ret void\n}\n\ndeclare ptr @__memset_chk(ptr, i32, i64, i64)\n\ndeclare fastcc ptr @opendir(ptr)\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SimplifyLibCalls] Calling convention assertion fails", "body": "```llvm\r\n; RUN: opt -S -passes=instcombine\r\ndefine void @main(ptr %ptr) {\r\n %opendir = call fastcc ptr @opendir(ptr %ptr)\r\n %memset = call ptr @__memset_chk(ptr %opendir, i32 0, i64 596, i64 -1)\r\n ret void\r\n}\r\n\r\ndeclare ptr @__memset_chk(ptr, i32, i64, i64)\r\n\r\ndeclare fastcc ptr @opendir(ptr)\r\n```\r\n\r\n> opt: /home/npopov/repos/llvm-project/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp:3488: Value *llvm::LibCallSimplifier::optimizeStringMemoryLibCall(CallInst *, IRBuilderBase &): Assertion `(ignoreCallingConv(Func) || TargetLibraryInfoImpl::isCallingConvCCompatible(CI)) && \"Optimizing string/memory libcall would change the calling convention\"' failed.\r\n\r\nEncountered when building openjpeg2.", "author": "nikic", "labels": [ "llvm:crash", "llvm:instcombine" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "058ac837bc35419bbbb34f3206f5aa229c669811", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 3045, 3051 ], [ 9167, 9174 ], [ 13454, 13460 ], [ 13560, 13566 ], [ 14022, 14028 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::gather", "BoUpSLP::setInsertPointAfterBundle", "createFreeze", "createShuffle" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/buildvector-shuffle-with-root.ll", "commands": [ "opt -S --passes=slp-vectorizer -slp-threshold=-99999 -mtriple=x86_64-unknown-linux-gnu < %s" ], "tests": [ { "test_name": "<module>", "test_body": "\ndefine void @test(i16 %arg) {\n;\nbb:\n %sitofp = sitofp i16 %arg to float\n %fadd = fadd float 0.000000e+00, 0.000000e+00\n %fsub = fsub float 0.000000e+00, %sitofp\n %fsub1 = fsub float 0.000000e+00, %sitofp\n %fsub2 = fsub float 0.000000e+00, %sitofp\n %sitofp3 = sitofp i16 0 to float\n %fsub4 = fsub float %fadd, %sitofp3\n store float %fsub4, ptr addrspace(1) getelementptr inbounds (i8, ptr addrspace(1) null, i64 20), align 4\n %fsub5 = fsub float %fsub, %sitofp\n store float %fsub5, ptr addrspace(1) getelementptr inbounds (i8, ptr addrspace(1) null, i64 24), align 4\n %fsub6 = fsub float %fsub1, %sitofp\n store float %fsub6, ptr addrspace(1) getelementptr inbounds (i8, ptr addrspace(1) null, i64 28), align 4\n %fsub7 = fsub float %fsub2, %sitofp\n store float %fsub7, ptr addrspace(1) getelementptr inbounds (i8, ptr addrspace(1) null, i64 32), align 4\n ret void\n}", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Assertion `isValidOperands(V1, V2, Mask) && \"Invalid shuffle vector instruction operands!\"' failed.", "body": "To reproduce run the test below with -passes=slp-vectorizer.\r\n```\r\n; ModuleID = './reduced.ll'\r\nsource_filename = \"./reduced.ll\"\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine void @wombat(i16 %arg) gc \"statepoint-example\" {\r\nbb:\r\n %sitofp = sitofp i16 %arg to float\r\n %fadd = fadd float 0.000000e+00, 0.000000e+00\r\n %fsub = fsub float 0.000000e+00, %sitofp\r\n %fsub1 = fsub float 0.000000e+00, %sitofp\r\n %fsub2 = fsub float 0.000000e+00, %sitofp\r\n %sitofp3 = sitofp i16 0 to float\r\n %fsub4 = fsub float %fadd, %sitofp3\r\n store float %fsub4, ptr addrspace(1) getelementptr inbounds (i8, ptr addrspace(1) null, i64 20), align 4\r\n %fsub5 = fsub float %fsub, %sitofp\r\n store float %fsub5, ptr addrspace(1) getelementptr inbounds (i8, ptr addrspace(1) null, i64 24), align 4\r\n %fsub6 = fsub float %fsub1, %sitofp\r\n store float %fsub6, ptr addrspace(1) getelementptr inbounds (i8, ptr addrspace(1) null, i64 28), align 4\r\n %fsub7 = fsub float %fsub2, %sitofp\r\n store float %fsub7, ptr addrspace(1) getelementptr inbounds (i8, ptr addrspace(1) null, i64 32), align 4\r\n ret void\r\n}\r\n```\r\nReproducer: https://godbolt.org/z/6h4xzhGa1\r\nStack dump:\r\n```\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=slp-vectorizer <source>\r\n1.\tRunning pass \"function(slp-vectorizer)\" on module \"<source>\"\r\n2.\tRunning pass \"slp-vectorizer\" on function \"wombat\"\r\n #0 0x00000000051494c8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x51494c8)\r\n #1 0x0000000005146ebc SignalHandler(int) Signals.cpp:0:0\r\n #2 0x000072f583642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x000072f5836969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x000072f583642476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x000072f5836287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x000072f58362871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\r\n #7 0x000072f583639e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n #8 0x0000000004eb74ce llvm::ShuffleVectorInst::ShuffleVectorInst(llvm::Value*, llvm::Value*, llvm::ArrayRef<int>, llvm::Twine const&, llvm::InsertPosition) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4eb74ce)\r\n #9 0x0000000000d09e93 llvm::IRBuilderBase::CreateShuffleVector(llvm::Value*, llvm::Value*, llvm::ArrayRef<int>, llvm::Twine const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xd09e93)\r\n#10 0x00000000041a0bdd llvm::slpvectorizer::BoUpSLP::gather(llvm::ArrayRef<llvm::Value*>, llvm::Value*, llvm::Type*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x41a0bdd)\r\n#11 0x00000000041a13fc void llvm::function_ref<void (llvm::Value*&, llvm::SmallVectorImpl<int>&)>::callback_fn<llvm::Value* llvm::slpvectorizer::BoUpSLP::processBuildVector<llvm::slpvectorizer::BoUpSLP::ShuffleInstructionBuilder, llvm::Value*, llvm::IRBuilder<llvm::TargetFolder, llvm::IRBuilderDefaultInserter>, llvm::slpvectorizer::BoUpSLP>(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::Type*, llvm::IRBuilder<llvm::TargetFolder, llvm::IRBuilderDefaultInserter>&, llvm::slpvectorizer::BoUpSLP&)::'lambda15'(llvm::Value*&, llvm::SmallVectorImpl<int>&)>(long, llvm::Value*&, llvm::SmallVectorImpl<int>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x41a13fc)\r\n#12 0x00000000041a26b9 llvm::slpvectorizer::BoUpSLP::ShuffleInstructionBuilder::finalize(llvm::ArrayRef<int>, llvm::ArrayRef<std::pair<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, unsigned int>>, llvm::ArrayRef<int>, unsigned int, llvm::function_ref<void (llvm::Value*&, llvm::SmallVectorImpl<int>&)>) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x41a26b9)\r\n#13 0x00000000041d5335 llvm::Value* llvm::slpvectorizer::BoUpSLP::processBuildVector<llvm::slpvectorizer::BoUpSLP::ShuffleInstructionBuilder, llvm::Value*, llvm::IRBuilder<llvm::TargetFolder, llvm::IRBuilderDefaultInserter>, llvm::slpvectorizer::BoUpSLP>(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::Type*, llvm::IRBuilder<llvm::TargetFolder, llvm::IRBuilderDefaultInserter>&, llvm::slpvectorizer::BoUpSLP&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x41d5335)\r\n#14 0x00000000041e168e llvm::slpvectorizer::BoUpSLP::vectorizeTree(llvm::slpvectorizer::BoUpSLP::TreeEntry*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x41e168e)\r\n#15 0x000000000420234a llvm::slpvectorizer::BoUpSLP::vectorizeTree(llvm::SmallDenseSet<llvm::Value*, 4u, llvm::DenseMapInfo<llvm::Value*, void>> const&, llvm::Instruction*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x420234a)\r\n#16 0x0000000004205c7d llvm::slpvectorizer::BoUpSLP::vectorizeTree() (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4205c7d)\r\n#17 0x0000000004224402 llvm::SLPVectorizerPass::vectorizeStoreChain(llvm::ArrayRef<llvm::Value*>, llvm::slpvectorizer::BoUpSLP&, unsigned int, unsigned int, unsigned int&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4224402)\r\n#18 0x0000000004225e6b llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&)::'lambda'(std::set<std::pair<unsigned int, int>, llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&)::StoreDistCompare, std::allocator<std::pair<unsigned int, int>>> const&)::operator()(std::set<std::pair<unsigned int, int>, llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&)::StoreDistCompare, std::allocator<std::pair<unsigned int, int>>> const&) const SLPVectorizer.cpp:0:0\r\n#19 0x0000000004227d98 llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4227d98)\r\n#20 0x00000000042285e9 llvm::SLPVectorizerPass::vectorizeStoreChains(llvm::slpvectorizer::BoUpSLP&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x42285e9)\r\n#21 0x0000000004229b35 llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0\r\n#22 0x000000000422a63b llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x422a63b)\r\n#23 0x0000000002f9948e llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2f9948e)\r\n#24 0x0000000004f47488 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4f47488)\r\n#25 0x0000000000e3bf3e llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe3bf3e)\r\n#26 0x0000000004f45eae llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4f45eae)\r\n#27 0x0000000000e3b64e llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe3b64e)\r\n#28 0x0000000004f458e0 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4f458e0)\r\n#29 0x000000000091103a llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x91103a)\r\n#30 0x000000000090399a optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x90399a)\r\n#31 0x000072f583629d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#32 0x000072f583629e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#33 0x00000000008fb41e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8fb41e)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139\r\n```", "author": "TatyanaDoubts", "labels": [ "llvm:SLPVectorizer", "crash" ], "comments": [ { "author": "RKSimon", "body": "CC @alexey-bataev " } ] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "ad9c0b369e86e75d56e229f294782a4eaf527226", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 6815, 6830 ], [ 6861, 6866 ], [ 6903, 6909 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::tryToVectorizeGatheredLoads" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/gathered-loads-non-full-reg.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux -mcpu=cascadelake < %s" ], "tests": [ { "test_name": "<module>", "test_body": "\n@solid_ = external global [608 x i8]\n\ndefine void @test(ptr noalias %0) {\n;\n.lr.ph1019:\n %1 = getelementptr i8, ptr %0, i64 8\n %2 = getelementptr i8, ptr %0, i64 32\n %3 = getelementptr i8, ptr %0, i64 128\n %4 = getelementptr i8, ptr %0, i64 200\n %5 = getelementptr i8, ptr %0, i64 208\n %6 = getelementptr i8, ptr %0, i64 232\n %7 = getelementptr i8, ptr %0, i64 288\n %8 = getelementptr i8, ptr %0, i64 320\n %9 = getelementptr i8, ptr %0, i64 304\n %10 = getelementptr i8, ptr %0, i64 424\n %11 = getelementptr i8, ptr %0, i64 480\n %12 = getelementptr i8, ptr %0, i64 504\n %13 = getelementptr i8, ptr %0, i64 632\n %14 = getelementptr i8, ptr %0, i64 720\n %15 = load double, ptr %1, align 8\n %16 = load double, ptr %2, align 8\n %17 = fadd double %16, %15\n %18 = load double, ptr %3, align 8\n %19 = load double, ptr %4, align 8\n %20 = load double, ptr %5, align 8\n %21 = load double, ptr %6, align 8\n %22 = fadd double %21, %20\n %23 = load double, ptr %7, align 8\n %24 = load double, ptr %8, align 8\n %25 = load double, ptr %9, align 8\n %26 = load double, ptr %10, align 8\n %27 = load double, ptr %11, align 8\n %28 = load double, ptr %12, align 8\n %29 = fadd double %28, %27\n %30 = fmul double %22, %18\n %31 = fmul double %30, 0.000000e+00\n %32 = fsub double 0.000000e+00, %25\n %33 = fmul double %32, 0.000000e+00\n %34 = fadd double %33, 0.000000e+00\n %35 = fmul double %34, 0.000000e+00\n %36 = fmul double %29, %26\n %37 = fmul double %36, 0.000000e+00\n %38 = fadd double %37, 0.000000e+00\n %39 = fsub double %17, %19\n %40 = fmul double %39, %23\n %41 = fmul double %40, 0.000000e+00\n %42 = load double, ptr %0, align 8\n %43 = load double, ptr %13, align 8\n %44 = fmul double %43, %31\n %45 = load double, ptr %14, align 8\n %46 = fmul double %35, 0.000000e+00\n %47 = fadd double %44, 0.000000e+00\n %48 = fmul double %45, %38\n %49 = fmul double %45, %41\n store double %46, ptr getelementptr inbounds (i8, ptr @solid_, i64 384), align 8\n store double %47, ptr getelementptr inbounds (i8, ptr @solid_, i64 408), align 8\n store double %48, ptr getelementptr inbounds (i8, ptr @solid_, i64 392), align 8\n store double %49, ptr getelementptr inbounds (i8, ptr @solid_, i64 400), align 8\n %.neg965 = fmul double %48, %24\n %reass.add993 = fadd double %.neg965, 0.000000e+00\n %50 = fadd double %42, %reass.add993\n %51 = fsub double 0.000000e+00, %50\n store double %51, ptr getelementptr inbounds (i8, ptr @solid_, i64 296), align 8\n %.neg969 = fmul double %49, 0.000000e+00\n %reass.add996 = fadd double %.neg969, 0.000000e+00\n %52 = fadd double %45, %reass.add996\n %53 = fsub double 0.000000e+00, %52\n store double %53, ptr getelementptr inbounds (i8, ptr @solid_, i64 304), align 8\n ret void\n}", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Crash in SLPVectorizer.cpp", "body": "I'm seeing a problem that shows up in the flang compiler when compiling a large, proprietary benchmark. Since the benchmark is proprietary, I can't include the source code in this bug report.\r\n\r\nThe problem happens in in the file `.../llvm-project/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp` in the function `BoUpSLP::tryToVectorizeGatheredLoads`.\r\n\r\nIn the code around line 6906, is the statement:\r\n\r\n```\r\nArrayRef<LoadInst *> Slice = ArrayRef(Loads).slice(Cnt, NumElts);\r\n```\r\n\r\nThe code for `slice()` is in `llvm-project/llvm/include/llvm/ADT/ArrayRef.h`. It contains the line:\r\n\r\n```\r\nassert(N+M <= size() && \"Invalid specifier\");\r\n```\r\n\r\nThis assertion fails, and the compiler crashes.\r\n\r\nI added debug code to `SLPVectorizer.cpp` to trace how the variables `Cnt` and `NumElts` got their values leading up to the point of failure. I've included the output of running the compiler on the test case in the file `log` along with the source code of the modified version of `SLPVectorizer.cpp` in the attached zip file.\r\n\r\nAt the point of failure, the value of `N` (which corresponds to `Cnt`) is 8. The value of `M` (passed from `NumElts`) is also 8. The call to `size()` returns 14. Since 8 + 8 is not less than or equal to 14, the assert fails and the compiler crashes.\r\n\r\nI captured the LLVM IR of the original test case and included it below in the file `x13.f90.ll` in the attached zip file.\r\n\r\nIf you run this command after downloading `x13.f90.ll`, you'll see the error:\r\n\r\n```\r\n#!/bin/bash\r\n../bin/clang -c -O3 -march=native -mllvm -locally-hot-callsite-threshold=4500 x13.f90.ll\r\n```\r\n\r\nI also ran the `x13.f90.ll` file through `llvm-reduce` using the following command:\r\n\r\n```\r\nllvm-reduce --test pcrash.sh x13.f90.ll\r\n```\r\n\r\nThis produced a file called `reduced.ll` that I've included in the attached zip file. I've also included the log file `reduced.log` that shows what happend when you run the command:\r\n\r\n```\r\n#!/bin/bash\r\n../bin/clang -c -O3 -march=native -mllvm -locally-hot-callsite-threshold=4500 reduced.ll\r\n```\r\n\r\n@alexey-bataev, please let me know if someone else should look at this or if I can help out by adding additional debug information.\r\n\r\n[Archive.zip](https://github.com/user-attachments/files/17805978/Archive.zip)\r\n", "author": "psteinfeld", "labels": [ "llvm:SLPVectorizer", "crash" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "f4974e09312afc9549fcfc0304b738d235da9eca", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 17799, 17804 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::collectValuesToDemote" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/ashr-node-with-poison.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux < %s" ], "tests": [ { "test_name": "<module>", "test_body": "\ndefine i32 @test(ptr %n, i32 %conv57, i1 %tobool5.not, i64 %bf.load14) {\n;\nentry:\n br i1 false, label %entry.if.end54_crit_edge, label %while.cond\n\nentry.if.end54_crit_edge:\n br label %if.end54\n\ntthread-pre-split:\n br label %t\n\nt:\n %w.2 = phi i32 [ 1, %tthread-pre-split ], [ 0, %if.end83 ]\n br label %if.end7\n\nt.u_crit_edge:\n br label %if.end7\n\nif.end7:\n %w.4 = phi i32 [ %w.2, %t ], [ %w.2, %t.u_crit_edge ], [ %bf.cast25, %while.body ]\n %a.4 = phi i32 [ 0, %t ], [ %conv57, %t.u_crit_edge ], [ %bf.cast2910, %while.body ]\n %b.4 = phi i32 [ 0, %t ], [ 0, %t.u_crit_edge ], [ %bf.cast2910, %while.body ]\n %c.4 = phi i32 [ 0, %t ], [ 1, %t.u_crit_edge ], [ poison, %while.body ]\n br label %v\n\nwhile.cond:\n %bf.load66.pre.pre1135 = phi i64 [ 0, %entry ], [ %spec.select, %if.end42 ]\n br i1 %tobool5.not, label %if.end54, label %while.body\n\nwhile.body:\n %bf.ashr24 = ashr i64 %bf.load14, 33\n %bf.cast25 = trunc nsw i64 %bf.ashr24 to i32\n %bf.ashr28 = lshr i64 %bf.load14, 1\n %bf.cast2910 = trunc i64 %bf.ashr28 to i32\n br label %if.end7\n\nif.end36:\n br label %v\n\nv:\n %c.7 = phi i32 [ %c.4, %if.end7 ], [ 0, %if.end36 ]\n br i1 true, label %if.end42, label %v.if.end83_crit_edge\n\nv.if.end83_crit_edge:\n br label %if.end83\n\nif.end42:\n %tobool43.not = icmp eq i32 %b.4, 0\n %narrow = select i1 %tobool43.not, i32 0, i32 %w.4\n %spec.select = zext i32 %narrow to i64\n %bf.value48 = zext i32 %a.4 to i64\n store i64 %bf.value48, ptr %n, align 8\n store i32 %c.7, ptr %n, align 4\n br label %while.cond\n\nif.end54:\n %bf.load66.pre.pre113125 = phi i64 [ %bf.load66.pre.pre1135, %while.cond ], [ poison, %entry.if.end54_crit_edge ]\n %0 = icmp eq i64 %bf.load66.pre.pre113125, 0\n br i1 %0, label %if.end83, label %ai.if.end76_crit_edge\n\nai.if.end76_crit_edge:\n br label %if.end83\n\nif.end83:\n br label %t\n}", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "clang crashes on valid code at -O{s,2,3} on x86_64-linux-gnu: Assertion `isa<To>(Val) && \"cast<Ty>() argument of incompatible type!\"' failed", "body": "It appears to be a recent regression as it doesn't reproduce with 19.1.0 and earlier.\n\nCompiler Explorer: https://godbolt.org/z/cb67rEodY\n\n```\n[516] % clangtk -v\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git 5208bc3694473f9378fc0d98eeee63e5ad5c5f04)\nTarget: x86_64-unknown-linux-gnu\nThread model: posix\nInstalledDir: /local/home/suz/suz-local/software/local/clang-trunk/bin\nBuild config: +assertions\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/12\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/12\nCandidate multilib: .;@m64\nSelected multilib: .;@m64\nFound CUDA installation: /usr/local/cuda, version 11.8\n[517] % \n[517] % clangtk -O2 -w small.c\nclang-20: /local/suz-local/software/clangbuild/llvm-project/llvm/include/llvm/Support/Casting.h:578: decltype(auto) llvm::cast(From*) [with To = llvm::Instruction; From = llvm::Value]: Assertion `isa<To>(Val) && \"cast<Ty>() argument of incompatible type!\"' failed.\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\nStack dump:\n0.\tProgram arguments: /local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/20241125-clangtk-m64-O3-fpointer-tbaa-build-014338/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/20241125-clangtk-m64-O3-fpointer-tbaa-build-014338/delta -resource-dir /local/home/suz/suz-local/software/local/clang-trunk/lib/clang/20 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/home/suz/suz-local/software/local/clang-trunk/lib/clang/20/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/12/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -w -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-99895f.o -x c small.c\n1.\t<eof> parser at end of file\n2.\tOptimizer\n3.\tRunning pass \"function<eager-inv>(float2int,lower-constant-intrinsics,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-verify-fixpoint>,loop-unroll<O2>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"small.c\"\n4.\tRunning pass \"slp-vectorizer\" on function \"main\"\n #0 0x0000562e34749b50 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x455db50)\n #1 0x0000562e34746f5f llvm::sys::RunSignalHandlers() (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x455af5f)\n #2 0x0000562e347470b5 SignalHandler(int) Signals.cpp:0:0\n #3 0x00007f99ac5bf520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\n #4 0x00007f99ac613a7c pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x96a7c)\n #5 0x00007f99ac5bf476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\n #6 0x00007f99ac5a57f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\n #7 0x00007f99ac5a571b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\n #8 0x00007f99ac5b6e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\n #9 0x0000562e31712868 (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x1526868)\n#10 0x0000562e3616cf4e llvm::slpvectorizer::BoUpSLP::collectValuesToDemote(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, unsigned int&, llvm::SmallVectorImpl<unsigned int>&, llvm::DenseSet<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::DenseMapInfo<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, void>>&, unsigned int&, bool&, bool) const::'lambda9'(unsigned int, unsigned int)::operator()(unsigned int, unsigned int) const::'lambda'(llvm::Value*)::operator()(llvm::Value*) const SLPVectorizer.cpp:0:0\n#11 0x0000562e3616d208 bool llvm::function_ref<bool (unsigned int, unsigned int)>::callback_fn<llvm::slpvectorizer::BoUpSLP::collectValuesToDemote(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, unsigned int&, llvm::SmallVectorImpl<unsigned int>&, llvm::DenseSet<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::DenseMapInfo<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, void>>&, unsigned int&, bool&, bool) const::'lambda9'(unsigned int, unsigned int)>(long, unsigned int, unsigned int) SLPVectorizer.cpp:0:0\n#12 0x0000562e361c72e9 llvm::slpvectorizer::BoUpSLP::collectValuesToDemote(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, unsigned int&, llvm::SmallVectorImpl<unsigned int>&, llvm::DenseSet<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::DenseMapInfo<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, void>>&, unsigned int&, bool&, bool) const::'lambda6'(unsigned int&, llvm::ArrayRef<llvm::slpvectorizer::BoUpSLP::TreeEntry const*>, llvm::function_ref<bool (unsigned int, unsigned int)>)::operator()(unsigned int&, llvm::ArrayRef<llvm::slpvectorizer::BoUpSLP::TreeEntry const*>, llvm::function_ref<bool (unsigned int, unsigned int)>) const SLPVectorizer.cpp:0:0\n#13 0x0000562e361c6065 llvm::slpvectorizer::BoUpSLP::collectValuesToDemote(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, unsigned int&, llvm::SmallVectorImpl<unsigned int>&, llvm::DenseSet<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::DenseMapInfo<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, void>>&, unsigned int&, bool&, bool) const (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x5fda065)\n#14 0x0000562e361c6d09 llvm::slpvectorizer::BoUpSLP::computeMinimumValueSizes()::'lambda0'(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, bool, unsigned int, unsigned int, bool, bool)::operator()(llvm::slpvectorizer::BoUpSLP::TreeEntry const&, bool, bool, unsigned int, unsigned int, bool, bool) const SLPVectorizer.cpp:0:0\n#15 0x0000562e361db4e3 llvm::slpvectorizer::BoUpSLP::computeMinimumValueSizes() (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x5fef4e3)\n#16 0x0000562e3623dc1e llvm::SLPVectorizerPass::tryToVectorizeList(llvm::ArrayRef<llvm::Value*>, llvm::slpvectorizer::BoUpSLP&, bool) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x6051c1e)\n#17 0x0000562e362427c0 bool tryToVectorizeSequence<llvm::Value>(llvm::SmallVectorImpl<llvm::Value*>&, llvm::function_ref<bool (llvm::Value*, llvm::Value*)>, llvm::function_ref<bool (llvm::Value*, llvm::Value*)>, llvm::function_ref<bool (llvm::ArrayRef<llvm::Value*>, bool)>, bool, llvm::slpvectorizer::BoUpSLP&) (.constprop.0) SLPVectorizer.cpp:0:0\n#18 0x0000562e36244162 llvm::SLPVectorizerPass::vectorizeChainsInBlock(llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x6058162)\n#19 0x0000562e3624bc96 llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0\n#20 0x0000562e3624c802 llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x6060802)\n#21 0x0000562e35c92cf6 llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x5aa6cf6)\n#22 0x0000562e340cd78f llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x3ee178f)\n#23 0x0000562e31add026 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x18f1026)\n#24 0x0000562e340cbb1b llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x3edfb1b)\n#25 0x0000562e31adb986 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x18ef986)\n#26 0x0000562e340cc67d llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x3ee067d)\n#27 0x0000562e349f1d16 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\n#28 0x0000562e349f566c clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x480966c)\n#29 0x0000562e350be425 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x4ed2425)\n#30 0x0000562e36cf2c7c clang::ParseAST(clang::Sema&, bool, bool) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x6b06c7c)\n#31 0x0000562e3539f2c9 clang::FrontendAction::Execute() (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x51b32c9)\n#32 0x0000562e353190f5 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x512d0f5)\n#33 0x0000562e354836b3 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x52976b3)\n#34 0x0000562e316862d1 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x149a2d1)\n#35 0x0000562e3167cc8a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\n#36 0x0000562e31681067 clang_main(int, char**, llvm::ToolContext const&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x1495067)\n#37 0x0000562e31579a7b main (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x138da7b)\n#38 0x00007f99ac5a6d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\n#39 0x00007f99ac5a6e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\n#40 0x0000562e3167c3b5 _start (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-20+0x14903b5)\nclangtk: error: unable to execute command: Aborted\nclangtk: error: clang frontend command failed due to signal (use -v to see invocation)\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git 5208bc3694473f9378fc0d98eeee63e5ad5c5f04)\nTarget: x86_64-unknown-linux-gnu\nThread model: posix\nInstalledDir: /local/home/suz/suz-local/software/local/clang-trunk/bin\nBuild config: +assertions\nclangtk: note: diagnostic msg: \n********************\n\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\nPreprocessed source(s) and associated run script(s) are located at:\nclangtk: note: diagnostic msg: /tmp/small-522eca.c\nclangtk: note: diagnostic msg: /tmp/small-522eca.sh\nclangtk: note: diagnostic msg: \n\n********************\n[518] % \n[518] % cat small.c\nstruct {\n int b : 31;\n int c : 6;\n} f, g, j;\nint d, e, h, i, k, l, m, n, o;\nint main() {\n if (m) {\n short q = d;\n if (d)\n r:\n d = q;\n if (0) {\n s:\n t:\n if (h)\n u:\n o = g.c;\n if (n)\n goto v;\n }\n if (n)\n while (g.c) {\n if (e)\n k;\n int w = j.b, a, b = g.c, c = ~b;\n a = f.b;\n if (l) {\n c = 0 % 0;\n goto u;\n }\n if (a)\n goto s;\n l;\n v:\n if (i)\n goto ae;\n if (b)\n j.b = w;\n f.b = a;\n l = c;\n }\n short p = n;\n if (0) {\n ag:\n h = p;\n if (f.b)\n goto t;\n }\n if (j.b) {\n ae:\n e = 0;\n ai:\n if (q)\n goto r;\n }\n }\n if (j.b)\n goto ai;\n if (d)\n goto ag;\n return 0;\n}\n```", "author": "zhendongsu", "labels": [ "llvm:SLPVectorizer", "crash" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "f70f1228035c9610de38e0e376afdacb647c4ad9", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 13909, 13919 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::vectorizeTree" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/extract-vectorized-operand.ll", "commands": [ "opt -S --passes=slp-vectorizer -slp-threshold=-99999 < %s -mtriple=x86_64-unknown-linux-gnu" ], "tests": [ { "test_name": "test", "test_body": "define void @test() {\nbb:\n %0 = shufflevector <2 x ptr addrspace(1)> zeroinitializer, <2 x ptr addrspace(1)> zeroinitializer, <2 x i32> <i32 1, i32 0>\n %1 = extractelement <2 x ptr addrspace(1)> %0, i32 0\n %2 = extractelement <2 x ptr addrspace(1)> %0, i32 1\n br label %bb43\n\nbb20: ; No predecessors!\n br label %bb105\n\nbb43: ; preds = %bb51, %bb\n %phi441 = phi ptr addrspace(1) [ %4, %bb51 ], [ %2, %bb ]\n %phi452 = phi ptr addrspace(1) [ %5, %bb51 ], [ %1, %bb ]\n br i1 false, label %bb105, label %bb51\n\nbb51: ; preds = %bb54, %bb43\n %3 = phi <2 x ptr addrspace(1)> [ poison, %bb54 ], [ zeroinitializer, %bb43 ]\n %4 = extractelement <2 x ptr addrspace(1)> %3, i32 0\n %5 = extractelement <2 x ptr addrspace(1)> %3, i32 1\n br label %bb43\n\nbb54: ; No predecessors!\n br label %bb51\n\nbb105: ; preds = %bb43, %bb20\n %phi106 = phi ptr addrspace(1) [ %1, %bb20 ], [ null, %bb43 ]\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLPVectorizer] Instruction does not dominate all uses! LLVM ERROR: Broken module found, compilation aborted!", "body": "To reproduce run the following test with -passes slp-vectorizer -slp-threshold=-99999\r\n[Test.ll.tgz](https://github.com/user-attachments/files/16431764/Test.ll.tgz)\r\n\r\nReproducer : https://godbolt.org/z/GW41a7WP6\r\n\r\nStack dump:\r\n```\r\nInstruction does not dominate all uses!\r\n %2 = shufflevector <2 x ptr addrspace(1)> %0, <2 x ptr addrspace(1)> poison, <2 x i32> <i32 1, i32 0>\r\n %1 = extractelement <2 x ptr addrspace(1)> %2, i32 0\r\nLLVM ERROR: Broken module found, compilation aborted!\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes slp-vectorizer -slp-threshold=-99999 <source>\r\n1.\tRunning pass \"verify\" on module \"<source>\"\r\n #0 0x0000000004eff778 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4eff778)\r\n #1 0x0000000004efceec SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007c0269e42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x00007c0269e969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x00007c0269e42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x00007c0269e287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x00000000007b3ff7 llvm::json::operator==(llvm::json::Value const&, llvm::json::Value const&) (.cold) JSON.cpp:0:0\r\n #7 0x0000000004e396a8 (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e396a8)\r\n #8 0x0000000004d360f0 llvm::VerifierPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4d360f0)\r\n #9 0x00000000008d865e llvm::detail::PassModel<llvm::Module, llvm::VerifierPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8d865e)\r\n#10 0x0000000004cf9c90 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4cf9c90)\r\n#11 0x00000000008e33d2 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8e33d2)\r\n#12 0x00000000008d62fc optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8d62fc)\r\n#13 0x00007c0269e29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#14 0x00007c0269e29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#15 0x00000000008cd75e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8cd75e)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139\r\n```\r\n", "author": "TatyanaDoubts", "labels": [ "llvm:SLPVectorizer", "llvm:crash" ], "comments": [ { "author": "Zentrik", "body": "@alexey-bataev Hi, is there a way to backport this fix for llvm 19, I tried just cherry picking f70f1228035c9610de38e0e376afdacb647c4ad9 but I ended up getting assertion failures of the form `/workspace/srcdir/llvm-project/llvm/lib/IR/Instruction.cpp:321: bool llvm::Instruction::comesBefore(const llvm::Instruction*) const: Assertion 'getParent() == Other->getParent() && \"cross-BB instruction order comparison\"' failed.'`. \r\nI can create an IR reproducer for that failure if need be.\r\nThank you.\r\n\r\nEDIT: Would just adding a check that they're in the same basic block work?" }, { "author": "alexey-bataev", "body": "> @alexey-bataev Hi, is there a way to backport this fix for llvm 19, I tried just cherry picking [f70f122](https://github.com/llvm/llvm-project/commit/f70f1228035c9610de38e0e376afdacb647c4ad9) but I ended up getting assertion failures of the form `/workspace/srcdir/llvm-project/llvm/lib/IR/Instruction.cpp:321: bool llvm::Instruction::comesBefore(const llvm::Instruction*) const: Assertion 'getParent() == Other->getParent() && \"cross-BB instruction order comparison\"' failed.'`. I can create an IR reproducer for that failure if need be. Thank you.\r\n> \r\n> EDIT: Would just adding a check that they're in the same basic block work?\r\n\r\nYes, check for the same parent should fix it" } ] }

[ "llvm/test/Transforms/IndVarSimplify", "llvm/test/Transforms/LoopStrengthReduce", "llvm/test/Transforms/LoopUnroll", "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "0b9f1cc024ca6c7e8d60524be07c0ddfcd08b23c", "components": [ "ScalarEvolution" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": [ [ 6023, 6029 ] ], "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": [ "ScalarEvolution::createNodeForPHI" ], "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/IndVarSimplify/invalidate-modified-lcssa-phi.ll", "commands": [ "opt -passes='loop(indvars,loop-deletion)' -verify-scev -S %s" ], "tests": [ { "test_name": "test_pr52023", "test_body": "define i8 @test_pr52023(i1 %c.1, i1 %c.2) {\nentry:\n br label %loop.1\n\nloop.1: ; preds = %loop.1.latch, %entry\n %inc79 = phi i8 [ %inc.lcssa, %loop.1.latch ], [ 0, %entry ]\n br label %loop.2\n\nloop.2: ; preds = %loop.2.latch, %loop.1\n %inc6 = phi i8 [ %inc79, %loop.1 ], [ %inc, %loop.2.latch ]\n %inc = add i8 %inc6, 1\n br i1 %c.1, label %loop.2.latch, label %loop.1.latch\n\nloop.2.latch: ; preds = %loop.2\n br i1 false, label %loop.2, label %loop.1.latch\n\nloop.1.latch: ; preds = %loop.2.latch, %loop.2\n %inc.lcssa = phi i8 [ %inc, %loop.2.latch ], [ undef, %loop.2 ]\n br i1 %c.2, label %exit, label %loop.1\n\nexit: ; preds = %loop.1.latch\n %inc.lcssa.lcssa = phi i8 [ %inc.lcssa, %loop.1.latch ]\n ret i8 %inc.lcssa.lcssa\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/IndVarSimplify/no-iv-rewrite.ll", "commands": [ "opt < %s -passes=indvars -S -indvars-predicate-loops=0" ], "tests": [ { "test_name": "identityphi", "test_body": "target datalayout = \"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\n; Function Attrs: nounwind\ndefine void @identityphi(i32 %limit) #0 {\nentry:\n br label %loop\n\nloop: ; preds = %control, %entry\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %control ]\n br i1 undef, label %if.then, label %control\n\nif.then: ; preds = %loop\n br label %control\n\ncontrol: ; preds = %if.then, %loop\n %iv.next = phi i32 [ %iv, %loop ], [ undef, %if.then ]\n %cmp = icmp slt i32 %iv.next, %limit\n br i1 %cmp, label %loop, label %exit\n\nexit: ; preds = %control\n ret void\n}\n\nattributes #0 = { nounwind }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopStrengthReduce/X86/2012-01-13-phielim.ll", "commands": [ "opt < %s -S -loop-reduce -mtriple=x86_64-- -mcpu=core2" ], "tests": [ { "test_name": "test3", "test_body": "; Function Attrs: nounwind ssp uwtable\ndefine fastcc void @test3(ptr nocapture %u) #0 {\nentry:\n br i1 undef, label %meshBB1, label %meshBB5\n\nfor.inc8.us.i: ; preds = %for.body3.us.i\n br i1 undef, label %meshBB1, label %meshBB\n\nfor.body3.us.i: ; preds = %meshBB, %for.body3.lr.ph.us.i\n %indvars.iv.i.SV.phi = phi i64 [ %indvars.iv.next.i, %meshBB ], [ 0, %for.body3.lr.ph.us.i ]\n %storemerge13.us.i.SV.phi = phi i32 [ 0, %meshBB ], [ 0, %for.body3.lr.ph.us.i ]\n %Opq.sa.calc12 = sub i32 undef, 227\n %0 = add nsw i64 %indvars.iv.i.SV.phi, %indvars.iv8.i.SV.phi26\n %1 = trunc i64 %0 to i32\n %mul.i.us.i = mul nsw i32 0, %1\n %arrayidx5.us.i = getelementptr inbounds double, ptr %u, i64 %indvars.iv.i.SV.phi\n %2 = load double, ptr %arrayidx5.us.i, align 8\n %indvars.iv.next.i = add i64 %indvars.iv.i.SV.phi, 1\n br i1 undef, label %for.inc8.us.i, label %meshBB\n\nfor.body3.lr.ph.us.i: ; preds = %meshBB1, %meshBB\n %indvars.iv8.i.SV.phi26 = phi i64 [ undef, %meshBB1 ], [ %indvars.iv8.i.SV.phi24, %meshBB ]\n %arrayidx.us.i = getelementptr inbounds double, ptr undef, i64 %indvars.iv8.i.SV.phi26\n %3 = add i64 %indvars.iv8.i.SV.phi26, 1\n br label %for.body3.us.i\n\nfor.inc8.us.i2: ; preds = %meshBB5\n unreachable\n\neval_At_times_u.exit: ; preds = %meshBB5\n ret void\n\nmeshBB: ; preds = %for.body3.us.i, %for.inc8.us.i\n %indvars.iv8.i.SV.phi24 = phi i64 [ undef, %for.body3.us.i ], [ %3, %for.inc8.us.i ]\n %meshStackVariable.phi = phi i32 [ %Opq.sa.calc12, %for.body3.us.i ], [ undef, %for.inc8.us.i ]\n br i1 undef, label %for.body3.lr.ph.us.i, label %for.body3.us.i\n\nmeshBB1: ; preds = %for.inc8.us.i, %entry\n br label %for.body3.lr.ph.us.i\n\nmeshBB5: ; preds = %entry\n br i1 undef, label %eval_At_times_u.exit, label %for.inc8.us.i2\n}\n\nattributes #0 = { nounwind ssp uwtable }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopUnroll/pr114879.ll", "commands": [ "opt -S -passes=loop-unroll-full -unroll-full-max-count=1 %s" ], "tests": [ { "test_name": "test", "test_body": "@GlobIntONE = external global i32, align 4\n\ndefine ptr @test() {\nentry:\n br label %for.body\n\nfor.body: ; preds = %cleanup, %entry\n %retval.0 = phi ptr [ undef, %entry ], [ %retval.2, %cleanup ]\n %cmp1.not = phi i1 [ true, %entry ], [ false, %cleanup ]\n br i1 %cmp1.not, label %cleanup, label %cleanup.loopexit\n\ncleanup.loopexit: ; preds = %for.body\n br label %cleanup\n\ncleanup: ; preds = %cleanup.loopexit, %for.body\n %retval.2 = phi ptr [ %retval.0, %for.body ], [ @GlobIntONE, %cleanup.loopexit ]\n br i1 %cmp1.not, label %for.body, label %cleanup2\n\ncleanup2: ; preds = %cleanup\n %retval.2.lcssa = phi ptr [ %retval.2, %cleanup ]\n ret ptr %retval.2.lcssa\n}\n", "additional_args": "--src-unroll=10 -tgt-unroll=10", "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/LoopVectorize/uniform-blend.ll", "commands": [ "opt -passes=loop-vectorize -force-vector-width=4 -S %s" ], "tests": [ { "test_name": "blend_uniform_iv", "test_body": "@dst = external global [32 x i16], align 1\n\ndefine void @blend_uniform_iv(i1 %c) {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n br i1 %c, label %loop.next, label %loop.latch\n\nloop.next: ; preds = %loop.header\n br label %loop.latch\n\nloop.latch: ; preds = %loop.next, %loop.header\n %blend = phi i64 [ poison, %loop.header ], [ %iv, %loop.next ]\n %dst.ptr = getelementptr inbounds [32 x i16], ptr @dst, i16 0, i64 %blend\n store i16 0, ptr %dst.ptr, align 2\n %iv.next = add nuw nsw i64 %iv, 1\n %cmp439 = icmp ult i64 %iv, 31\n br i1 %cmp439, label %loop.header, label %exit\n\nexit: ; preds = %loop.latch\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blend_uniform_iv_trunc", "test_body": "@dst = external global [32 x i16], align 1\n\ndefine void @blend_uniform_iv_trunc(i1 %c) {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %iv.trunc.2 = trunc i64 %iv to i16\n br i1 %c, label %loop.next, label %loop.latch\n\nloop.next: ; preds = %loop.header\n br label %loop.latch\n\nloop.latch: ; preds = %loop.next, %loop.header\n %blend = phi i16 [ poison, %loop.header ], [ %iv.trunc.2, %loop.next ]\n %dst.ptr = getelementptr inbounds [32 x i16], ptr @dst, i16 0, i16 %blend\n store i16 0, ptr %dst.ptr, align 2\n %iv.next = add nuw nsw i64 %iv, 1\n %cmp439 = icmp ult i64 %iv, 31\n br i1 %cmp439, label %loop.header, label %exit\n\nexit: ; preds = %loop.latch\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "WRONG code: GVN? Loop opts?", "body": "cat wrong0.i\r\n```\r\nint printf(const char *, ...);\r\nunsigned int IntArr[6];\r\nunsigned int GlobIntONE = 1, GlobIntZERO = 0;\r\nconst unsigned int *GlobIntPtr = 0;\r\nunsigned long Res;\r\nunsigned long *ResPtr = &Res;\r\nconst unsigned int **GlobIntPtrPTr = &GlobIntPtr;\r\nunsigned int *func() {\r\n int *GlobIntONEPtr = &GlobIntONE;\r\n for (int Idx = 0; Idx <= 7; Idx += 1) {\r\n int Idx2 = 1;\r\n if (Idx > 0) {\r\n for (; Idx2 <= 7; Idx2 += 1)\r\n ;\r\n return GlobIntONEPtr;\r\n }\r\n }\r\n 0 != &GlobIntONEPtr;\r\n return &GlobIntZERO;\r\n}\r\n\r\nint main() {\r\n IntArr[GlobIntZERO] = GlobIntZERO;\r\n *GlobIntPtrPTr = func();\r\n unsigned char Byte = *GlobIntPtr;\r\n *ResPtr = Byte;\r\n printf(\"checksum = %X\\n\", Res);\r\n}\r\n```\r\n\r\n\r\nIn the above file, func() should obviously should return GlobIntONEPtr, but it does not if compiled with '-fno-inline -mllvm -unroll-full-max-count=1'.\r\n\r\n```\r\nclang -O0 -march=z16 wrong0.i -o a.out -w -fno-inline ; ./a.out\r\nchecksum = 1\r\n\r\nclang -O3 -march=z16 wrong0.i -o a.out -w -fno-inline ; ./a.out\r\nchecksum = 1\r\n\r\nclang -O3 -march=z16 wrong0.i -o a.out -w -fno-inline -mllvm -unroll-full-max-count=1 ; ./a.out\r\nchecksum = 0\r\n\r\n```\r\nIt may be that GVN does something wrong, as after it @func() is always returning ptr undef. Or it could very well be some of the loop optimizations that is run just before it.\r\n\r\nA bisect shows that\r\n\r\n```\r\nd77067d08a3f56dc2d0e6c95bd2852c943df743a is the first bad commit\r\ncommit d77067d08a3f56dc2d0e6c95bd2852c943df743a\r\nAuthor: Nikita Popov <[email protected]>\r\nDate: Wed Dec 6 14:17:18 2023 +0100\r\n\r\n [ValueTracking] Add dominating condition support in computeKnownBits() (#73662)\r\n\r\n```\r\n@nikic ", "author": "JonPsson1", "labels": [ "miscompilation", "llvm:SCEV" ], "comments": [ { "author": "dtcxzyw", "body": "Bisected to LoopUnrollFullPass:\r\n```\r\n; bin/opt -passes=loop-unroll-full -unroll-full-max-count=1 test.ll -S\r\n\r\n@GlobIntONE = dso_local global i32 1, align 4\r\n@GlobIntZERO = dso_local local_unnamed_addr global i32 0, align 4\r\n\r\ndefine i32 @main() local_unnamed_addr {\r\nentry:\r\n br label %for.body\r\n\r\nfor.body: ; preds = %entry, %cleanup\r\n %retval.0 = phi ptr [ undef, %entry ], [ %retval.2, %cleanup ]\r\n %cmp1.not = phi i1 [ true, %entry ], [ false, %cleanup ]\r\n br i1 %cmp1.not, label %cleanup, label %for.cond2.preheader\r\n\r\nfor.cond2.preheader: ; preds = %for.body\r\n br label %cleanup.loopexit\r\n\r\ncleanup.loopexit: ; preds = %for.cond2.preheader\r\n br label %cleanup\r\n\r\ncleanup: ; preds = %cleanup.loopexit, %for.body\r\n %retval.2 = phi ptr [ %retval.0, %for.body ], [ @GlobIntONE, %cleanup.loopexit ]\r\n br i1 %cmp1.not, label %for.body, label %cleanup7\r\n\r\ncleanup7: ; preds = %cleanup\r\n %retval.2.lcssa = phi ptr [ %retval.2, %cleanup ]\r\n %res = load i32, ptr %retval.2.lcssa, align 4\r\n ret i32 %res\r\n}\r\n```\r\n```\r\nsource_filename = \"test.ll\"\r\n\r\n@GlobIntONE = dso_local global i32 1, align 4\r\n@GlobIntZERO = dso_local local_unnamed_addr global i32 0, align 4\r\n\r\ndefine i32 @main() local_unnamed_addr {\r\nentry:\r\n br label %for.body.peel.begin\r\n\r\nfor.body.peel.begin: ; preds = %entry\r\n br label %for.body.peel\r\n\r\nfor.body.peel: ; preds = %for.body.peel.begin\r\n br i1 true, label %cleanup.peel, label %for.cond2.preheader.peel\r\n\r\nfor.cond2.preheader.peel: ; preds = %for.body.peel\r\n br label %cleanup.loopexit.peel\r\n\r\ncleanup.loopexit.peel: ; preds = %for.cond2.preheader.peel\r\n br label %cleanup.peel\r\n\r\ncleanup.peel: ; preds = %cleanup.loopexit.peel, %for.body.peel\r\n %retval.2.peel = phi ptr [ undef, %for.body.peel ], [ @GlobIntONE, %cleanup.loopexit.peel ]\r\n br i1 true, label %for.body.peel.next, label %cleanup7\r\n\r\nfor.body.peel.next: ; preds = %cleanup.peel\r\n br label %for.body.peel.next1\r\n\r\nfor.body.peel.next1: ; preds = %for.body.peel.next\r\n br label %entry.peel.newph\r\n\r\nentry.peel.newph: ; preds = %for.body.peel.next1\r\n br label %for.body\r\n\r\nfor.body: ; preds = %cleanup, %entry.peel.newph\r\n br i1 false, label %cleanup, label %for.cond2.preheader\r\n\r\nfor.cond2.preheader: ; preds = %for.body\r\n br label %cleanup.loopexit\r\n\r\ncleanup.loopexit: ; preds = %for.cond2.preheader\r\n br label %cleanup\r\n\r\ncleanup: ; preds = %cleanup.loopexit, %for.body\r\n br i1 false, label %for.body, label %cleanup7.loopexit, !llvm.loop !0\r\n\r\ncleanup7.loopexit: ; preds = %cleanup\r\n %retval.2.lcssa.ph = phi ptr [ %retval.2.peel, %cleanup ]\r\n br label %cleanup7\r\n\r\ncleanup7: ; preds = %cleanup7.loopexit, %cleanup.peel\r\n %retval.2.lcssa = phi ptr [ %retval.2.peel, %cleanup.peel ], [ %retval.2.lcssa.ph, %cleanup7.loopexit ]\r\n %res = load i32, ptr %retval.2.lcssa, align 4\r\n ret i32 %res\r\n}\r\n\r\n!0 = distinct !{!0, !1}\r\n!1 = !{!\"llvm.loop.peeled.count\", i32 1}\r\n```" }, { "author": "dtcxzyw", "body": "`simplifyLoopAfterUnroll -> simplifyLoopIVs` causes the miscompilation: https://alive2.llvm.org/ce/z/yiBsZt\r\nI will post a fix later.\r\n" }, { "author": "dtcxzyw", "body": "The root cause is:\r\n1. `simplifyInstruction(%retval.2.peel)` returns `@GlobIntONE`. Thus, `ScalarEvolution::createNodeForPHI` returns SCEV expr `@GlobIntONE` for `%retval.2.peel`.\r\n2. `SimplifyIndvar::replaceIVUserWithLoopInvariant` tries to replace the use of `%retval.2.peel` in `%retval.2.lcssa.ph` with `@GlobIntONE`.\r\n3. `SCEVExpander::expand` reuses `%retval.2.peel = phi ptr [ undef, %for.body.peel ], [ @GlobIntONE, %cleanup.loopexit.peel ]` to generate code for `@GlobIntONE`. It is incorrect.\r\n\r\nTwo possible solutions:\r\n1. Set `CanUseUndef` to false in `simplifyInstruction`.\r\n2. Block this case in `ScalarEvolution::canReuseInstruction`.\r\n\r\n@nikic @preames Any thoughts?\r\n" }, { "author": "nikic", "body": "I think setting `CanUseUndef=false` would be the correct thing to do. The reverse replacement here is particularly fishy, but more generally, if we make an assumption about the value of undef at a particular use, we have to be consistent about that assumption, and SCEV cannot really guarantee that this is the case." } ] }

[ "llvm/test/Analysis/ScalarEvolution" ]

{ "fix_commit": "54a9f0007cb4f19d2e9df30405c5027229f5def0", "components": [ "ScalarEvolution" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": [ [ 928, 938 ] ], "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": [ "BinomialCoefficient" ], "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Analysis/ScalarEvolution/pr87798.ll", "commands": [ "opt -disable-output -passes='print<scalar-evolution>' -verify-scev < %s 2>&1" ], "tests": [ { "test_name": "pr87798", "test_body": "target datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine i32 @pr87798() {\nbb:\n br label %bb1\n\nbb1: ; preds = %bb1, %bb\n %phi = phi i32 [ 0, %bb ], [ %add4, %bb1 ]\n %phi2 = phi i32 [ 0, %bb ], [ %add, %bb1 ]\n %phi3 = phi i32 [ 0, %bb ], [ %add5, %bb1 ]\n %add = add i32 %phi2, %phi3\n %mul = mul i32 %phi2, %phi3\n %add4 = add i32 %mul, %phi\n %and = and i32 %phi, 1\n %add5 = add i32 %phi3, 1\n br i1 true, label %preheader, label %bb1\n\npreheader: ; preds = %bb1\n %phi9 = phi i32 [ %and, %bb1 ]\n br label %loop\n\nloop: ; preds = %loop, %preheader\n br label %loop\n\nbb7: ; No predecessors!\n %zext = zext i32 %phi9 to i64\n ret i32 0\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Assertion failure: \"multiplicative inverse is only defined for odd numbers\" exposed through usage in SCEV", "body": "With this change [1b76120](https://github.com/llvm/llvm-project/commit/1b761205f2686516cebadbcbc37f798197d9c482) landed in https://github.com/llvm/llvm-project/pull/87610, we started seeing an assertion failure on the introduced API.\r\n\r\nThis change caused an assertion failure in usage of multiplicativeInverse in SCEV's BinomialCoefficient algorithm (which was also updated by the change to use this overloaded API). The `oddFactorial` in this algorithm becomes 0 and the assertion in newly introduced API gets triggered. Note that the old API for multiplicativeInverse (which passed in the explicit modulo) returned 0 when the input was also 0, and probably hid this bug in SCEV. \r\n\r\nHere's a minimal reproducer for trunk:\r\n```\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine i32 @\"static jint Test.iMeth(jlong, jint, jint)2272037699586\"() {\r\nbci_0:\r\n br label %bci_71.preheader\r\n\r\nbci_71.preheader: ; preds = %bci_71.preheader, %bci_0\r\n %local_9_242 = phi i32 [ 0, %bci_0 ], [ %1, %bci_71.preheader ]\r\n %local_7_241 = phi i32 [ 0, %bci_0 ], [ %0, %bci_71.preheader ]\r\n %local_4_239 = phi i32 [ 0, %bci_0 ], [ %3, %bci_71.preheader ]\r\n %0 = add i32 %local_7_241, %local_4_239\r\n %.neg14 = mul i32 %local_7_241, %local_4_239\r\n %1 = add i32 %.neg14, %local_9_242\r\n %2 = and i32 %local_9_242, 1\r\n %3 = add i32 %local_4_239, 1\r\n br i1 true, label %bci_10.i38.preheader, label %bci_71.preheader\r\n\r\nbci_10.i38: ; preds = %bci_10.i38.preheader, %bci_10.i38\r\n br label %bci_10.i38\r\n\r\n\"static jlong FuzzerUtils.checkSum(jobject)2306397437964.exit\": ; No predecessors!\r\n %4 = zext i32 %.lcssa596 to i64\r\n ret i32 0\r\n\r\nbci_10.i38.preheader: ; preds = %bci_71.preheader\r\n %.lcssa596 = phi i32 [ %2, %bci_71.preheader ]\r\n br label %bci_10.i38\r\n}\r\n```\r\n\r\nopt -passes=indvars reduced.ll produces:\r\n```\r\nopt: /root/llvm-project/llvm/lib/Support/APInt.cpp:1245: llvm::APInt llvm::APInt::multiplicativeInverse() const: Assertion `(*this)[0] && \"multiplicative inverse is only defined for odd numbers!\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=indvars <source>\r\n #0 0x0000000004cfc568 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4cfc568)\r\n #1 0x0000000004cf9cbc SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007f7209e42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x00007f7209e969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x00007f7209e42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x00007f7209e287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x00007f7209e2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\r\n #7 0x00007f7209e39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n #8 0x0000000004bf9eff llvm::APInt::multiplicativeInverse() const (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4bf9eff)\r\n #9 0x000000000443a4b5 llvm::SCEVAddRecExpr::evaluateAtIteration(llvm::ArrayRef<llvm::SCEV const*>, llvm::SCEV const*, llvm::ScalarEvolution&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x443a4b5)\r\n#10 0x000000000443cb4f llvm::ScalarEvolution::computeSCEVAtScope(llvm::SCEV const*, llvm::Loop const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x443cb4f)\r\n#11 0x000000000443cfee llvm::ScalarEvolution::getSCEVAtScope(llvm::SCEV const*, llvm::Loop const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x443cfee)\r\n#12 0x000000000443c525 llvm::ScalarEvolution::computeSCEVAtScope(llvm::SCEV const*, llvm::Loop const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x443c525)\r\n#13 0x000000000443cfee llvm::ScalarEvolution::getSCEVAtScope(llvm::SCEV const*, llvm::Loop const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x443cfee)\r\n#14 0x000000000404eca0 llvm::rewriteLoopExitValues(llvm::Loop*, llvm::LoopInfo*, llvm::TargetLibraryInfo*, llvm::ScalarEvolution*, llvm::TargetTransformInfo const*, llvm::SCEVExpander&, llvm::DominatorTree*, llvm::ReplaceExitVal, llvm::SmallVector<llvm::WeakTrackingVH, 16u>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x404eca0)\r\n#15 0x0000000003a10fd8 (anonymous namespace)::IndVarSimplify::run(llvm::Loop*) IndVarSimplify.cpp:0:0\r\n#16 0x0000000003a11c1a llvm::IndVarSimplifyPass::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3a11c1a)\r\n#17 0x00000000029ffd4e llvm::detail::PassModel<llvm::Loop, llvm::IndVarSimplifyPass, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x29ffd4e)\r\n#18 0x0000000003aaef56 std::optional<llvm::PreservedAnalyses> llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::runSinglePass<llvm::Loop, std::unique_ptr<llvm::detail::PassConcept<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>, std::default_delete<llvm::detail::PassConcept<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>>>>(llvm::Loop&, std::unique_ptr<llvm::detail::PassConcept<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>, std::default_delete<llvm::detail::PassConcept<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>>>&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&, llvm::PassInstrumentation&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3aaef56)\r\n#19 0x0000000003aaf1ee llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::runWithoutLoopNestPasses(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3aaf1ee)\r\n#20 0x0000000003ab05d9 llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3ab05d9)\r\n...\r\n```", "author": "annamthomas", "labels": [ "llvm:SCEV", "crash" ], "comments": [ { "author": "topperc", "body": "CC @jayfoad " }, { "author": "annamthomas", "body": "I think the old API (multiplicativeInverse when modulo provided) was hiding this bug since multiplicative inverse shouldn't be asked for 0.\r\nAlso, the reason the `oddFactorial` becomes 0 here is because of this:\r\n```\r\n// Calculate K! / 2^T and T; we divide out the factors of two before\r\n // multiplying for calculating K! / 2^T to avoid overflow.\r\n // Other overflow doesn't matter because we only care about the bottom\r\n // W bits of the result.\r\n APInt OddFactorial(W, 1);\r\n unsigned T = 1;\r\n for (unsigned i = 3; i <= K; ++i) {\r\n APInt Mult(W, i);\r\n unsigned TwoFactors = Mult.countr_zero();\r\n T += TwoFactors;\r\n Mult.lshrInPlace(TwoFactors);\r\n OddFactorial *= Mult; \r\n }\r\n ```\r\n\r\nHere, W is one (bit width = 1 and I believe this is the bug) and we are trying to represent Mult=4 in one bit. That makes `Mult` 0 and hence `OddFactorial` 0.\r\n\r\nOne thing we can obviously do is in the newly introduced API, explicitly check if the APInt is 0 and return 0 (this makes behaviour same as the old API).\r\nBut I think this is hiding the bug. " }, { "author": "jayfoad", "body": "Suggestion:\r\n```diff\r\ndiff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp\r\nindex e030b9fc7dac..3f8c390614ff 100644\r\n--- a/llvm/lib/Analysis/ScalarEvolution.cpp\r\n+++ b/llvm/lib/Analysis/ScalarEvolution.cpp\r\n@@ -928,11 +928,9 @@ static const SCEV *BinomialCoefficient(const SCEV *It, unsigned K,\r\n APInt OddFactorial(W, 1);\r\n unsigned T = 1;\r\n for (unsigned i = 3; i <= K; ++i) {\r\n- APInt Mult(W, i);\r\n- unsigned TwoFactors = Mult.countr_zero();\r\n+ unsigned TwoFactors = countr_zero(i);\r\n T += TwoFactors;\r\n- Mult.lshrInPlace(TwoFactors);\r\n- OddFactorial *= Mult;\r\n+ OddFactorial *= i >> TwoFactors;\r\n }\r\n \r\n // We need at least W + T bits for the multiplication step\r\n```" }, { "author": "annamthomas", "body": "yes, that would probably work as well (since we avoid representing Mult in W bit width), but how can the bitWidth of the SCEV result`W` be 1 in the first place? " }, { "author": "jayfoad", "body": "> yes, that would probably work as well (since we avoid representing Mult in W bit width), but how can the bitWidth of the SCEV result`W` be 1 in the first place?\r\n\r\nNo idea! I have only looked at `BinomialCoefficient` itself, not at its callers. I assume it is supposed to work for any W > 0 and K > 0. At least I don't see it mentioned that K has to be representable in W bits, or anything like that." }, { "author": "efriedma-quic", "body": "The function is supposed to compute `BC(It, K) mod 2^W`, i.e. the binomial coefficient truncated to fit into a W-bit integer. This is useful for computing the value of a W-bit induction variable at iteration \"It\" of a loop. There isn't any expectation that \"It\" or \"K\" fit losslessly into \"W\": the arithmetic is supposed to wrap.\r\n\r\nGiven the way the function works, truncating \"i\" after the shift looks like the right solution." } ] }

[ "llvm/test/Transforms/DeadStoreElimination" ]

{ "fix_commit": "2d31a12dbe2339d20844ede70cbb54dbaf4ceea9", "components": [ "DeadStoreElimination" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": [ [ 2283, 2289 ] ], "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": [ "DSEState::getInitializesArgMemLoc" ], "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/DeadStoreElimination/inter-procedural.ll", "commands": [ "opt < %s -passes=dse -enable-dse-initializes-attr-improvement -S" ], "tests": [ { "test_name": "test_byval", "test_body": "%struct.a = type { i32, i64, i32, i32 }\n\n@e = dso_local global { i32, [4 x i8], i64, i32, i32 } { i32 5, [4 x i8] zeroinitializer, i64 0, i32 1, i32 90986701 }, align 8\n\ndefine i8 @ad(ptr byval(%struct.a) %ah) {\nentry:\n store i32 0, ptr %ah, align 8\n %call = call i64 @af(ptr %ah)\n %0 = load i8, ptr %ah, align 1\n ret i8 %0\n}\n\ndefine i64 @af(ptr byval(%struct.a) initializes((0, 24)) %am) {\nentry:\n call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %am, ptr noundef nonnull align 8 dereferenceable(24) @e, i64 24, i1 false)\n ret i64 0\n}\n\ndefine i32 @main() {\n %res = call i8 @ad(ptr @e)\n %val = sext i8 %res to i32\n ret i32 %val\n}\n", "additional_args": null, "lli_expected_out": "" } ] } ]

{ "title": "[FuncAttrs] `initializes` is incorrectly set on parameters with `byval`", "body": "Reproducer: https://godbolt.org/z/Mcx1nY4E7\n```\n; bin/opt -passes=function-attrs reduced.ll -S\n%struct.a = type { i32, i64, i32, i32 }\n\n@e = dso_local global { i32, [4 x i8], i64, i32, i32 } { i32 5, [4 x i8] zeroinitializer, i64 0, i32 1, i32 90986701 }, align 8\n\ndefine i8 @ad(ptr byval(%struct.a) %ah) {\nentry:\n store i32 0, ptr %ah, align 8\n %call = call i64 @af(ptr %ah)\n %0 = load i8, ptr %ah, align 1\n ret i8 %0\n}\n\ndefine i64 @af(ptr byval(%struct.a) %am) {\nentry:\n call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %am, ptr noundef nonnull align 8 dereferenceable(24) @e, i64 24, i1 false)\n ret i64 0\n}\n\n```\n```\ndefine i8 @ad(ptr byval(%struct.a) captures(none) initializes((0, 4)) %ah) #0 {\n store i32 0, ptr %ah, align 8\n %call = call i64 @af(ptr %ah)\n %0 = load i8, ptr %ah, align 1\n ret i8 %0\n}\n\ndefine noundef i64 @af(ptr writeonly byval(%struct.a) captures(none) initializes((0, 24)) %am) #0 {\n call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %am, ptr noundef nonnull align 8 dereferenceable(24) @e, i64 24, i1 false)\n ret i64 0\n}\n```\nAfter DSE:\n```\ndefine i8 @ad(ptr byval(%struct.a) captures(none) initializes((0, 4)) %ah) #0 {\n %call = call i64 @af(ptr %ah)\n %0 = load i8, ptr %ah, align 1\n ret i8 %0\n}\n\ndefine noundef i64 @af(ptr writeonly byval(%struct.a) captures(none) initializes((0, 24)) %am) #0 {\n ret i64 0\n}\n```\n\nllvm version: d21fc58aeeaa7f0369a24dbe70a0360e0edbf76f\n", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:transforms" ], "comments": [ { "author": "nikic", "body": "> We should also emit the padding for %struct.a.\n\nWithout commenting on whether we should or shouldn't, why is not having the padding a miscompile? As this is not a packed struct, for a i64:64 target, LLVM will implicitly insert the padding and it should have the correct size." }, { "author": "dtcxzyw", "body": "> As this is not a packed struct, for a i64:64 target, LLVM will implicitly insert the padding and it should have the correct size.\n\nSorry. It is a DSE bug.\n" }, { "author": "dtcxzyw", "body": "cc @haopliu " }, { "author": "nikic", "body": "@dtcxzyw I think your new IR is over-reduced. You have `initializes((0, 24)` on `@af`, so I think eliminating the store is correct." }, { "author": "dtcxzyw", "body": "> [@dtcxzyw](https://github.com/dtcxzyw) I think your new IR is over-reduced. You have `initializes((0, 24)` on `@af`, so I think eliminating the store is correct.\n\nFixed." }, { "author": "nikic", "body": "There are two ways we can fix this, depending on what we want the semantics to do:\n\n 1. Don't infer initializes on byval arguments. initializes on byval refers to the original caller memory (or having both attributes is made a verifier error).\n 2. Infer initializes on byval, but don't use it in DSE. initializes on byval refers to the callee copy. This matches the semantics of readonly on byval.\n\nI think variant 2 is marginally more powerful. For example, we could do a backend optimization where byval + initializes will allocate the full size of byval on the stack but not copy over the parts covered by initializes." } ] }

[ "llvm/test/Transforms/BDCE" ]

{ "fix_commit": "b210cbbd0eb8ef7cd2735e99570474e6e53ee00b", "components": [ "BDCE" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": [ [ 45, 59 ], [ 79, 90 ] ], "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": [ "clearAssumptionsOfUsers" ], "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/BDCE/invalidate-assumptions.ll", "commands": [ "opt -passes=bdce %s -S" ], "tests": [ { "test_name": "disjoint_indirect", "test_body": "define i32 @disjoint_indirect(i64 %x) {\n %and = and i64 %x, 1\n %trunc = trunc i64 %and to i32\n %or = or disjoint i32 %trunc, -2\n ret i32 %or\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "disjoint", "test_body": "define i64 @disjoint(i64 %x) {\n %and = and i64 %x, 1\n %or = or disjoint i64 %and, -2\n ret i64 %or\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Wrong code at -O2/3 on x86-64_linux-gnu (recent regression)", "body": "clang at -O2/3 produced the wrong code. This is a recent regression.\r\n\r\nBisected to 20737825c9122b6e0a8912731cfa7e0558fe025d, which was committed by @antoniofrighetto \r\n\r\nCompiler explorer: https://godbolt.org/z/55z1WT3MM\r\n\r\n```console\r\n% cat reduced.c\r\nint printf(const char *, ...);\r\nshort a, f = 6;\r\nint b, e, g;\r\nint c[7][1];\r\nstatic int *d = &b;\r\nlong h;\r\nint *const *i;\r\nstatic unsigned char j(long k, short *n) {\r\n int *l = &c[5][0];\r\n int *const **m = &i;\r\n i = &l;\r\n *d = 0;\r\n for (; e < 60; e++)\r\n ***m = ((h = *d == (1 ^ k)) & *n + f) - 2;\r\n return 0;\r\n}\r\nint main() {\r\n j(1, &a);\r\n printf(\"%d\\n\", c[5][0]);\r\n}\r\n%\r\n% clang -O0 reduced.c &&./a.out\r\n-2\r\n% clang -O2 reduced.c &&./a.out\r\n4\r\n%\r\n```", "author": "shao-hua-li", "labels": [ "miscompilation", "llvm:transforms" ], "comments": [ { "author": "nikic", "body": "Looks like poison flags don't get cleared as expected." }, { "author": "nikic", "body": "Minimized:\r\n```llvm\r\ndefine i32 @test(i64 %x) {\r\n %and = and i64 %x, 1\r\n %trunc = trunc i64 %and to i32\r\n %or = or disjoint i32 %trunc, -2\r\n ret i32 %or\r\n}\r\n```\r\nThe `%and` gets dropped but `disjoint` is kept." }, { "author": "antoniofrighetto", "body": "@nikic, could you kindly elaborate this? I'm having a hard time getting this, the transformation looks correct with simple `or` (https://alive2.llvm.org/ce/z/ui3yFf). Semantics for `disjoint`:\r\n> If the disjoint flag is set, and the or has a one and the same bit in both arguments, the result is poison.\r\n\r\nHowever, here:\r\n```llvm\r\n %add = add nuw nsw i64 %conv5, %conv4\r\n %and = and i64 %add, 1\r\n %2 = trunc i64 %and to i32\r\n %conv7 = or disjoint i32 %2, -2\r\n```\r\nThe two or operands do not seem to have any same bit in both arguments." }, { "author": "antoniofrighetto", "body": "OK, I got it now, the `disjoint` should not be there at all after the transformation. Makes sense, thank you." }, { "author": "nikic", "body": "Fixed another issue I noticed in this code in https://github.com/llvm/llvm-project/commit/cb6240d247b3419dea29eb99261171ea239b1c5c." } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "45b526afa26e76e0c351e947ac8f0e4b55aa760b", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 6196, 6206 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationCostModel::setVectorizedCallDecision" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/X86/replicate-uniform-call.ll", "commands": [ "opt -p loop-vectorize -S %s" ], "tests": [ { "test_name": "smax_call_uniform", "test_body": "target datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine void @smax_call_uniform(ptr %dst, i64 %x) {\nentry:\n %c = icmp ult i8 -68, -69\n %mul = mul nuw nsw i64 %x, 0\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n br i1 %c, label %loop.latch, label %else\n\nelse: ; preds = %loop.header\n %rem = urem i64 %mul, %x\n %smax = tail call i64 @llvm.smax.i64(i64 %rem, i64 0)\n br label %loop.latch\n\nloop.latch: ; preds = %else, %loop.header\n %p = phi i64 [ 1, %loop.header ], [ %smax, %else ]\n %add = add i64 %p, 1\n %gep = getelementptr i64, ptr %dst, i64 %add\n store i64 0, ptr %gep, align 8\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, 0\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i64 @llvm.smax.i64(i64, i64) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[clang] Assertion failed in LoopVectorize.cpp:7401", "body": "When I compiled the code with -O2 flag, it crashed:\r\n\r\n```c\r\n#include <stdint.h>\r\nstatic uint8_t b = 188;\r\nvoid c();\r\nlong d(int e, int p2, short j) {\r\n long f = 0, a = 1;\r\n unsigned long g;\r\n int h;\r\n if (e < 0 || j < 0)\r\n return 1;\r\n h = 0;\r\n for (; h < p2; h++) {\r\n a *= j + 1;\r\n g = e * a;\r\n f += g % (j + 1);\r\n }\r\n if (f < 0)\r\n return 0;\r\n return f;\r\n}\r\nvoid i();\r\nint64_t k() {\r\n uint32_t l[][8][10] = {0, 4, 7, 1, 4, 3446557846};\r\n int64_t m[10];\r\n int h;\r\n for (h = 0; c + h < 10; h++)\r\n m[(int)d(5, l[0][0][5] - 3446557842, b - 187) + h] = 1;\r\n i(m);\r\n uint8_t *n = &b;\r\n uint8_t **o;\r\n o[0] = &n;\r\n}\r\n```\r\n\r\nThe crash is:\r\n```\r\nclang: /root/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7401: llvm::VectorizationFactor llvm::LoopVectorizationPlanner::computeBestVF(): Assertion `(BestFactor.Width == LegacyVF.Width || planContainsAdditionalSimplifications(getPlanFor(BestFactor.Width), CostCtx, OrigLoop)) && \" VPlan cost model and legacy cost model disagreed\"' failed.\r\n```\r\n\r\nDetails can be found here: https://godbolt.org/z/hqP8vMG7b\r\n", "author": "cardigan1008", "labels": [ "regression", "vectorizers", "crash" ], "comments": [ { "author": "shafik", "body": "This is a regression in trunk: https://godbolt.org/z/a53x7oxhq" } ] }

[ "llvm/test/Transforms/IndVarSimplify" ]

{ "fix_commit": "c9a5e1b665dbba898e9981fd7d48881947e6560e", "components": [ "SimplifyIndVar" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": [ [ 1928, 1945 ] ], "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": [ "WidenIV::widenIVUse" ], "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/IndVarSimplify/pr106239.ll", "commands": [ "opt -S -passes=indvars < %s" ], "tests": [ { "test_name": "m", "test_body": "target datalayout = \"n8:16:32:64\"\n\ndefine i32 @m() {\nentry:\n %div.i4 = sdiv i32 1, 0\n br label %for.body.i6\n\nfor.body.i6: ; preds = %if.end.i, %entry\n %add57.i = phi i32 [ %add.i7, %if.end.i ], [ 0, %entry ]\n br i1 true, label %i.exit, label %if.end.i\n\nif.end.i: ; preds = %for.body.i6\n %add.i7 = add i32 %add57.i, %div.i4\n %conv.i = zext i32 %add57.i to i64\n store i64 %conv.i, ptr null, align 8\n br label %for.body.i6\n\ni.exit: ; preds = %for.body.i6\n ret i32 0\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[clang] Crash with O2 optimization flag", "body": "I compiled this code with -O2 flag and it crashed. The code is:\r\n\r\n```c\r\n#include <stdint.h>\r\nlong a, c;\r\nunsigned d;\r\nint32_t g;\r\nuint8_t h[];\r\nlong b(long p1, long k) {\r\n long e = k;\r\n int b = 0;\r\n while (e) {\r\n e /= 10;\r\n b++;\r\n }\r\n for (int f = 0; f < b; f++)\r\n p1 *= 10;\r\n a = p1 + k;\r\n return a;\r\n}\r\nlong i(int p1, int, int l) {\r\n int j = l / p1;\r\n for (int f = 0; f < p1; f++) {\r\n if (d > l)\r\n break;\r\n c = d += j;\r\n }\r\n}\r\nuint32_t m() {\r\n for (g = 8; b(35, 46) - 3546 + g >= 0; g--)\r\n ;\r\n h[i(g + 1, 0, -4294967221)];\r\n}\r\n```\r\n\r\nThe crash is: clang: /root/llvm-project/llvm/include/llvm/Support/Casting.h:662: decltype(auto) llvm::dyn_cast(From*) [with To = llvm::BinaryOperator; From = llvm::Instruction]: Assertion `detail::isPresent(Val) && \"dyn_cast on a non-existent value\"' failed.\r\n\r\n\r\nThe details can be found here: https://godbolt.org/z/37WsGxMcv", "author": "cardigan1008", "labels": [ "regression", "release:backport", "confirmed", "crash", "llvm:transforms" ], "comments": [ { "author": "shafik", "body": "Looks like a regression, does not crash in clang-18: https://godbolt.org/z/1zYqs3sbz" }, { "author": "dtcxzyw", "body": "Reproducer: https://godbolt.org/z/bbdhPxx5E\r\n\r\n```\r\n; bin/opt -passes=indvars reduced.ll -S\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\r\n\r\ndefine i32 @m() {\r\nentry:\r\n %div.i4 = sdiv i32 1, 0\r\n br label %for.body.i6\r\n\r\nfor.body.i6: ; preds = %if.end.i, %entry\r\n %add57.i = phi i32 [ %add.i7, %if.end.i ], [ 0, %entry ]\r\n br i1 true, label %i.exit, label %if.end.i\r\n\r\nif.end.i: ; preds = %for.body.i6\r\n %add.i7 = add i32 %add57.i, %div.i4\r\n %conv.i = zext i32 %add57.i to i64\r\n store i64 %conv.i, ptr null, align 8\r\n br label %for.body.i6\r\n\r\ni.exit: ; preds = %for.body.i6\r\n ret i32 0\r\n}\r\n```\r\ncc @nikic" }, { "author": "DimitryAndric", "body": "This regressed with `llvmorg-19-init-02822-g`4db93e5d564 (\"[IndVars] Recompute flags if needed in widenIVUse of IV increment. (#82352)\") by @fhahn." } ] }

[ "llvm/test/Transforms/IndVarSimplify" ]

{ "fix_commit": "4db93e5d56440be44d8ad2036e2579208c82ad37", "components": [ "ScalarEvolution", "SimplifyIndVar" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": [ [ 771, 776 ] ], "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": [ [ 258, 263 ] ], "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": [ [ 1131, 1137 ], [ 1731, 1737 ], [ 1825, 1835 ], [ 1996, 2006 ], [ 2024, 2030 ] ], "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": [ "SCEVExpander::hoistIVInc" ], "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": [ "WidenIV::createWideIV", "WidenIV::widenIVUse" ], "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/IndVarSimplify/hoist-wide-inc-for-narrow-use-recompute-flags.ll", "commands": [ "opt -p indvars -S %s" ], "tests": [ { "test_name": "test_pr82243", "test_body": "target datalayout = \"e-m:o-i64:64-i128:128-n32:64-S128\"\n\ndefine void @test_pr82243(ptr %f) {\nentry:\n br label %outer.header\n\nouter.header: ; preds = %outer.latch, %entry\n %iv = phi i32 [ 1, %entry ], [ %iv.next, %outer.latch ]\n %iv.sext = sext i32 %iv to i64\n %gep.iv.ext = getelementptr i32, ptr %f, i64 %iv.sext\n store i32 1, ptr %gep.iv.ext, align 4\n %sub = add i32 %iv, -1\n %shl = shl i32 123, %sub\n %gep.shl = getelementptr i32, ptr %f, i32 %shl\n br label %inner.header\n\ninner.header: ; preds = %inner.latch, %outer.header\n store i32 0, ptr %gep.shl, align 4\n br i1 false, label %inner.latch, label %exit\n\ninner.latch: ; preds = %inner.header\n br i1 false, label %inner.header, label %outer.latch\n\nouter.latch: ; preds = %inner.latch\n %iv.next = add i32 %iv, -1\n br label %outer.header\n\nexit: ; preds = %inner.header\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Wrong code at -Os on x86-64_gnu-linux (recent regression)", "body": "Clang at -Os produced the wrong code.\r\n\r\nBisected to dce77a357948709e335910ddc07f9c3f2eb2ac4b, which was committed by @fhahn \r\n\r\nCompiler explorer: https://godbolt.org/z/fTrenPK4h\r\n\r\n```console\r\n% cat reduced.c\r\nint printf(const char *, ...);\r\nint a, b, c, d, e;\r\nint f[9];\r\nint g(int i) {\r\n c = 1 << i;\r\n if (b & c)\r\n return 4;\r\n return 0;\r\n}\r\nint j(int i) {\r\n int h = g(i);\r\n return h;\r\n}\r\nint k() {\r\n d = 6;\r\n for (; d; d--) {\r\n e = 0;\r\n for (; e <= 6; e++) {\r\n f[j(d - 1)] = f[d];\r\n for (; e + d;)\r\n return 0;\r\n }\r\n }\r\n return 0;\r\n}\r\nint main() {\r\n k();\r\n printf(\"%d\\n\", a);\r\n}\r\n%\r\n% clang -O3 reduced.c && ./a.out\r\n0\r\n% clang -Os reduced.c && ./a.out\r\n\r\n%\r\n```", "author": "shao-hua-li", "labels": [ "miscompilation", "llvm:SCEV" ], "comments": [ { "author": "fhahn", "body": "The issue is that IndVars doesn't drop poison-generating flags when hoisting the IV to introduce a new use of the widened IV. working on a fix" }, { "author": "fhahn", "body": "Should be fixed, thanks again as always @shao-hua-li " }, { "author": "shao-hua-li", "body": "You're welcome @fhahn " } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "65da32c634a8345fcbe021f69fc6a609d074c08c", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 6480, 6491 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationCostModel::getInstructionCost" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/RISCV/blend-any-of-reduction-cost.ll", "commands": [ "opt -p loop-vectorize -S %s" ], "tests": [ { "test_name": "any_of_reduction_used_in_blend", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine i32 @any_of_reduction_used_in_blend(ptr %src, i64 %N, i1 %c.0, i1 %c.1) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %any.of.red = phi i32 [ 0, %entry ], [ %any.of.red.next, %loop.latch ]\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n br i1 %c.0, label %loop.latch, label %else.1\n\nelse.1: ; preds = %loop.header\n br i1 %c.1, label %loop.latch, label %else.2\n\nelse.2: ; preds = %else.1\n %l = load ptr, ptr %src, align 8\n %c.2 = icmp eq ptr %l, null\n %sel = select i1 %c.2, i32 0, i32 %any.of.red\n br label %loop.latch\n\nloop.latch: ; preds = %else.2, %else.1, %loop.header\n %any.of.red.next = phi i32 [ %any.of.red, %loop.header ], [ %any.of.red, %else.1 ], [ %sel, %else.2 ]\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, %N\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n %res = phi i32 [ %any.of.red.next, %loop.latch ]\n ret i32 %res\n}\n\nattributes #0 = { \"target-cpu\"=\"sifive-p670\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "any_of_reduction_used_in_blend_with_mutliple_phis", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine i32 @any_of_reduction_used_in_blend_with_mutliple_phis(ptr %src, i64 %N, i1 %c.0, i1 %c.1) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %any.of.red = phi i32 [ 0, %entry ], [ %any.of.red.next, %loop.latch ]\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n br i1 %c.0, label %x.1, label %else.1\n\nelse.1: ; preds = %loop.header\n br i1 %c.1, label %x.1, label %else.2\n\nelse.2: ; preds = %else.1\n %l = load ptr, ptr %src, align 8\n %c.2 = icmp eq ptr %l, null\n %sel = select i1 %c.2, i32 0, i32 %any.of.red\n br label %loop.latch\n\nx.1: ; preds = %else.1, %loop.header\n %p = phi i32 [ %any.of.red, %loop.header ], [ %any.of.red, %else.1 ]\n br label %loop.latch\n\nloop.latch: ; preds = %x.1, %else.2\n %any.of.red.next = phi i32 [ %p, %x.1 ], [ %sel, %else.2 ]\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, %N\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n %res = phi i32 [ %any.of.red.next, %loop.latch ]\n ret i32 %res\n}\n\nattributes #0 = { \"target-cpu\"=\"sifive-p670\" }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Crash in LV: \"VPlan cost model and legacy cost model disagreed\"", "body": "Loop vectorizer crash for the following reproducer:\r\n```\r\ntarget datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\r\ntarget triple = \"riscv64-unknown-linux-gnu\"\r\n\r\ndefine void @init_dependence_analysis(ptr %iiv_used.i.i.i.sroa.0, i64 %indvars.iv71.i.i.i, i1 %cmp104.not.i.i.i, i1 %tobool108.not.i.i.i) #0 {\r\nentry:\r\n br label %for.cond101.preheader.i.i.i\r\n\r\nfor.cond101.preheader.i.i.i: ; preds = %for.inc121.i.i.i, %entry\r\n %separability.0.i.i = phi i32 [ 0, %entry ], [ %separability.2.i.i, %for.inc121.i.i.i ]\r\n br label %for.body103.i.i.i\r\n\r\nfor.body103.i.i.i: ; preds = %for.inc121.i.i.i, %for.cond101.preheader.i.i.i\r\n %separability.1.i.i = phi i32 [ %separability.0.i.i, %for.cond101.preheader.i.i.i ], [ %separability.2.i.i, %for.inc121.i.i.i ]\r\n %indvars.iv71.i.i.i5 = phi i64 [ 0, %for.cond101.preheader.i.i.i ], [ %indvars.iv.next72.i.i.i, %for.inc121.i.i.i ]\r\n br i1 %cmp104.not.i.i.i, label %for.inc121.i.i.i, label %land.lhs.true105.i.i.i\r\n\r\nland.lhs.true105.i.i.i: ; preds = %for.body103.i.i.i\r\n br i1 %tobool108.not.i.i.i, label %for.inc121.i.i.i, label %land.lhs.true109.i.i.i\r\n\r\nland.lhs.true109.i.i.i: ; preds = %land.lhs.true105.i.i.i\r\n %0 = load ptr, ptr %iiv_used.i.i.i.sroa.0, align 8\r\n %cmp118.i.i.i = icmp eq ptr %0, null\r\n %spec.select209.i.i = select i1 %cmp118.i.i.i, i32 0, i32 %separability.1.i.i\r\n br label %for.inc121.i.i.i\r\n\r\nfor.inc121.i.i.i: ; preds = %land.lhs.true109.i.i.i, %land.lhs.true105.i.i.i, %for.body103.i.i.i\r\n %separability.2.i.i = phi i32 [ %separability.1.i.i, %for.body103.i.i.i ], [ %separability.1.i.i, %land.lhs.true105.i.i.i ], [ %spec.select209.i.i, %land.lhs.true109.i.i.i ]\r\n %indvars.iv.next72.i.i.i = add i64 %indvars.iv71.i.i.i5, 1\r\n %exitcond74.not.i.i.i = icmp eq i64 %indvars.iv71.i.i.i5, %indvars.iv71.i.i.i\r\n br i1 %exitcond74.not.i.i.i, label %for.cond101.preheader.i.i.i, label %for.body103.i.i.i\r\n\r\n; uselistorder directives\r\n uselistorder i32 %separability.2.i.i, { 1, 0 }\r\n}\r\n\r\nattributes #0 = { \"target-cpu\"=\"sifive-p670\" }\r\n```\r\n\r\nopt -S --passes=loop-vectorize ./reduced.ll\r\nLoopVectorize.cpp:7430: VectorizationFactor llvm::LoopVectorizationPlanner::computeBestVF(): Assertion `(BestFactor.Width == LegacyVF.Width || planContainsAdditionalSimplifications(getPlanFor(BestFactor.Width), CostCtx, OrigLoop)) && \" VPlan cost model and legacy cost model disagreed\"' failed.\r\n", "author": "alexey-bataev", "labels": [ "vectorizers", "crash" ], "comments": [] }

[ "llvm/test/Transforms/InstCombine", "llvm/test/Transforms/InstSimplify" ]

{ "fix_commit": "a77dedcacb4c5eb221395b69877981dd6ad98989", "components": [ "IR", "InstCombine", "InstructionSimplify" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": [ [ 1095, 1113 ] ], "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": [ [ 102, 107 ] ], "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": [ [ 1158, 1186 ], [ 1189, 1194 ], [ 2138, 2166 ] ], "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": [ [ 902, 912 ] ], "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": [ "simplifyDivRem" ], "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": [ "InstCombinerImpl::commonIDivTransforms", "InstCombinerImpl::commonIRemTransforms", "foldIDivShl" ], "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": [ "llvm::ConstantFoldBinaryInstruction" ], "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/div.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "sdiv_constant_dividend_select_of_constants_divisor_vec", "test_body": "define <2 x i8> @sdiv_constant_dividend_select_of_constants_divisor_vec(i1 %b) {\n %s = select i1 %b, <2 x i8> <i8 12, i8 -5>, <2 x i8> <i8 -4, i8 4>\n %r = sdiv <2 x i8> <i8 42, i8 -42>, %s\n ret <2 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "udiv_constant_dividend_select_of_constants_divisor_vec", "test_body": "define <2 x i8> @udiv_constant_dividend_select_of_constants_divisor_vec(i1 %b) {\n %s = select i1 %b, <2 x i8> <i8 12, i8 -5>, <2 x i8> <i8 -4, i8 4>\n %r = udiv <2 x i8> <i8 42, i8 -42>, %s\n ret <2 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "sdiv_constant_dividend_select_of_constants_divisor_vec_ub1", "test_body": "define <2 x i8> @sdiv_constant_dividend_select_of_constants_divisor_vec_ub1(i1 %b) {\n %s = select i1 %b, <2 x i8> <i8 0, i8 -5>, <2 x i8> <i8 -4, i8 4>\n %r = sdiv <2 x i8> <i8 42, i8 -42>, %s\n ret <2 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "udiv_constant_dividend_select_of_constants_divisor_vec_ub1", "test_body": "define <2 x i8> @udiv_constant_dividend_select_of_constants_divisor_vec_ub1(i1 %b) {\n %s = select i1 %b, <2 x i8> <i8 0, i8 -5>, <2 x i8> <i8 -4, i8 4>\n %r = udiv <2 x i8> <i8 42, i8 -42>, %s\n ret <2 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/InstCombine/rem.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "urem_constant_dividend_select_of_constants_divisor_vec_ub1", "test_body": "define <2 x i8> @urem_constant_dividend_select_of_constants_divisor_vec_ub1(i1 %b) {\n %s = select i1 %b, <2 x i8> <i8 0, i8 -5>, <2 x i8> <i8 -4, i8 4>\n %r = urem <2 x i8> <i8 42, i8 -42>, %s\n ret <2 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "urem_constant_dividend_select_of_constants_divisor_vec", "test_body": "define <2 x i8> @urem_constant_dividend_select_of_constants_divisor_vec(i1 %b) {\n %s = select i1 %b, <2 x i8> <i8 12, i8 -5>, <2 x i8> <i8 -4, i8 4>\n %r = urem <2 x i8> <i8 42, i8 -42>, %s\n ret <2 x i8> %r\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/InstCombine/vector-udiv.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "vec_select_udiv_poison", "test_body": "define <2 x i32> @vec_select_udiv_poison(<2 x i1> %x) {\n %sel = select <2 x i1> %x, <2 x i32> splat (i32 -1), <2 x i32> <i32 0, i32 1>\n %div = udiv <2 x i32> <i32 42, i32 -7>, %sel\n ret <2 x i32> %div\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_v4i32_zext_shl_const_pow2", "test_body": "define <4 x i32> @test_v4i32_zext_shl_const_pow2(<4 x i32> %a0, <4 x i16> %a1) {\n %1 = shl <4 x i16> <i16 4, i16 8, i16 16, i16 32>, %a1\n %2 = zext <4 x i16> %1 to <4 x i32>\n %3 = udiv <4 x i32> %a0, %2\n ret <4 x i32> %3\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/InstSimplify/div.ll", "commands": [ "opt < %s -passes=instsimplify -S" ], "tests": [ { "test_name": "udiv_zero_elt_vec", "test_body": "define <2 x i8> @udiv_zero_elt_vec(<2 x i8> %x) {\n %div = udiv <2 x i8> %x, <i8 0, i8 42>\n ret <2 x i8> %div\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "sdiv_zero_elt_vec", "test_body": "define <2 x i8> @sdiv_zero_elt_vec(<2 x i8> %x) {\n %div = sdiv <2 x i8> %x, <i8 -42, i8 0>\n ret <2 x i8> %div\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "udiv_poison_elt_vec", "test_body": "define <2 x i8> @udiv_poison_elt_vec(<2 x i8> %x) {\n %div = udiv <2 x i8> %x, <i8 poison, i8 42>\n ret <2 x i8> %div\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "sdiv_zero_elt_vec_constfold", "test_body": "define <2 x i8> @sdiv_zero_elt_vec_constfold(<2 x i8> %x) {\n %div = sdiv <2 x i8> <i8 1, i8 2>, <i8 0, i8 -42>\n ret <2 x i8> %div\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "sdiv_poison_elt_vec", "test_body": "define <2 x i8> @sdiv_poison_elt_vec(<2 x i8> %x) {\n %div = sdiv <2 x i8> %x, <i8 -42, i8 poison>\n ret <2 x i8> %div\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "udiv_zero_elt_vec_constfold", "test_body": "define <2 x i8> @udiv_zero_elt_vec_constfold(<2 x i8> %x) {\n %div = udiv <2 x i8> <i8 1, i8 2>, <i8 42, i8 0>\n ret <2 x i8> %div\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "zero_dividend_vector_poison_elt", "test_body": "define <2 x i32> @zero_dividend_vector_poison_elt(<2 x i32> %A) {\n %B = sdiv <2 x i32> <i32 0, i32 poison>, %A\n ret <2 x i32> %B\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/InstSimplify/rem.ll", "commands": [ "opt < %s -passes=instsimplify -S" ], "tests": [ { "test_name": "srem_zero_elt_vec_constfold", "test_body": "define <2 x i8> @srem_zero_elt_vec_constfold(<2 x i8> %x) {\n %rem = srem <2 x i8> <i8 1, i8 2>, <i8 0, i8 -42>\n ret <2 x i8> %rem\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "urem_zero_elt_vec", "test_body": "define <2 x i8> @urem_zero_elt_vec(<2 x i8> %x) {\n %rem = urem <2 x i8> %x, <i8 0, i8 42>\n ret <2 x i8> %rem\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "urem_zero_elt_vec_constfold", "test_body": "define <2 x i8> @urem_zero_elt_vec_constfold(<2 x i8> %x) {\n %rem = urem <2 x i8> <i8 1, i8 2>, <i8 42, i8 0>\n ret <2 x i8> %rem\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "srem_undef_elt_vec", "test_body": "define <2 x i8> @srem_undef_elt_vec(<2 x i8> %x) {\n %rem = srem <2 x i8> %x, <i8 -42, i8 undef>\n ret <2 x i8> %rem\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "urem_undef_elt_vec", "test_body": "define <2 x i8> @urem_undef_elt_vec(<2 x i8> %x) {\n %rem = urem <2 x i8> %x, <i8 undef, i8 42>\n ret <2 x i8> %rem\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "zero_dividend_vector_poison_elt", "test_body": "define <2 x i32> @zero_dividend_vector_poison_elt(<2 x i32> %A) {\n %B = urem <2 x i32> <i32 poison, i32 0>, %A\n ret <2 x i32> %B\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "srem_zero_elt_vec", "test_body": "define <2 x i8> @srem_zero_elt_vec(<2 x i8> %x) {\n %rem = srem <2 x i8> %x, <i8 -42, i8 0>\n ret <2 x i8> %rem\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] miscompilation of `or` of vectors", "body": "Alive2 report: https://alive2.llvm.org/ce/z/LyM8sY\r\n\r\n```llvm\r\n----------------------------------------\r\ndefine <2 x i32> @or_sext_to_sel_constant_vec.3(<2 x i1> %y) {\r\n#0:\r\n %sext = sext <2 x i1> %y to <2 x i32>\r\n %#1 = or <2 x i32> %sext, { 0, 1 }\r\n %#2 = udiv <2 x i32> { 42, 4294967289 }, %#1\r\n ret <2 x i32> %#2\r\n}\r\n=>\r\ndefine <2 x i32> @or_sext_to_sel_constant_vec.3(<2 x i1> %y) {\r\n#0:\r\n ret <2 x i32> { 0, 0 }\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Value mismatch\r\n\r\nExample:\r\n<2 x i1> %y = < #x1 (1), #x0 (0) >\r\n\r\nSource:\r\n<2 x i32> %sext = < #xffffffff (4294967295, -1), #x00000000 (0) >\r\n<2 x i32> %#1 = < #xffffffff (4294967295, -1), #x00000001 (1) >\r\n<2 x i32> %#2 = < #x00000000 (0), #xfffffff9 (4294967289, -7) >\r\n\r\nTarget:\r\nSource value: < #x00000000 (0), #xfffffff9 (4294967289, -7) >\r\nTarget value: < #x00000000 (0), #x00000000 (0) >\r\n\r\n\r\n----------------------------------------\r\ndefine <2 x i32> @or_sext_to_sel_constant_vec.2(<2 x i1> %y) {\r\n#0:\r\n %sext = sext <2 x i1> %y to <2 x i32>\r\n %#1 = or <2 x i32> %sext, { 0, 1 }\r\n %#2 = sdiv <2 x i32> { 42, 4294967289 }, %#1\r\n %#3 = udiv exact <2 x i32> %#2, %#2\r\n %#4 = or <2 x i32> %#2, %#2\r\n ret <2 x i32> %#4\r\n}\r\n=>\r\ndefine <2 x i32> @or_sext_to_sel_constant_vec.2(<2 x i1> %y) {\r\n#0:\r\n ret <2 x i32> { 4294967254, 7 }\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Value mismatch\r\n\r\nExample:\r\n<2 x i1> %y = < #x1 (1), #x0 (0) >\r\n\r\nSource:\r\n<2 x i32> %sext = < #xffffffff (4294967295, -1), #x00000000 (0) >\r\n<2 x i32> %#1 = < #xffffffff (4294967295, -1), #x00000001 (1) >\r\n<2 x i32> %#2 = < #xffffffd6 (4294967254, -42), #xfffffff9 (4294967289, -7) >\r\n<2 x i32> %#3 = < #x00000001 (1), #x00000001 (1) >\r\n<2 x i32> %#4 = < #xffffffd6 (4294967254, -42), #xfffffff9 (4294967289, -7) >\r\n\r\nTarget:\r\nSource value: < #xffffffd6 (4294967254, -42), #xfffffff9 (4294967289, -7) >\r\nTarget value: < #xffffffd6 (4294967254, -42), #x00000007 (7) >\r\n\r\nSummary:\r\n 0 correct transformations\r\n 2 incorrect transformations\r\n 0 failed-to-prove transformations\r\n 0 Alive2 errors\r\n```", "author": "bongjunj", "labels": [ "miscompilation", "llvm:instcombine", "llvm:analysis" ], "comments": [ { "author": "dtcxzyw", "body": "@bongjunj Feel free to ping me if you find new InstCombine miscompilation bugs without involving undef values/NaN payloads." }, { "author": "dtcxzyw", "body": "https://github.com/llvm/llvm-project/blob/eac2c182c6f852fc187af9952250a43d6fb17b28/llvm/lib/Analysis/InstructionSimplify.cpp#L1098-L1109\r\n\r\nWe cannot do this simplification when threading udiv over selects.\r\n " } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "929cbe7f596733f85cd274485acc19442dd34a80", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": [ [ 545, 551 ] ], "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": [ "InstCombinerImpl::foldPHIArgGEPIntoPHI" ], "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/opaque-ptr.ll", "commands": [ "opt -S -passes=instcombine < %s" ], "tests": [ { "test_name": "phi_of_gep_flags_1", "test_body": "define ptr @phi_of_gep_flags_1(i1 %c, ptr %p) {\n br i1 %c, label %if, label %else\n\nif: ; preds = %0\n %gep1 = getelementptr inbounds i32, ptr %p, i64 1\n br label %join\n\nelse: ; preds = %0\n %gep2 = getelementptr nusw nuw i32, ptr %p, i64 1\n br label %join\n\njoin: ; preds = %else, %if\n %phi = phi ptr [ %gep1, %if ], [ %gep2, %else ]\n ret ptr %phi\n}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/InstCombine/phi.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "wrong_gep_arg_into_phi", "test_body": "target datalayout = \"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i64 @wrong_gep_arg_into_phi(ptr noundef %ptr) {\nentry:\n %add.ptr = getelementptr i8, ptr %ptr, i64 1\n br label %for.cond\n\nfor.cond: ; preds = %for.cond, %entry\n %.pn = phi ptr [ %add.ptr, %entry ], [ %incdec.ptr, %for.cond ]\n %val = load i8, ptr %.pn, align 1\n %cond = icmp ne i8 %val, 0\n %incdec.ptr = getelementptr inbounds nuw i8, ptr %.pn, i64 1\n br i1 %cond, label %for.cond, label %exit\n\nexit: ; preds = %for.cond\n ret i64 0\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[clang] Miscompile with -O3 and -O0/1/2 since 18.1.0", "body": "When I compiled this code with -O0/1/2, its output is 0. However, with -O3, it returned 143:\r\n\r\n```c\r\nint printf(const char *, ...);\r\nchar a, b;\r\nint c;\r\nchar *e = &b;\r\nint f(char *g, int *k) {\r\n char *d = g + *k;\r\n for (; *d && *d <= ' '; d++)\r\n ;\r\n if (*d)\r\n return 0;\r\n return 1;\r\n}\r\nint l(int g) {\r\n char h[] = {a, a, a};\r\n int i[] = {g};\r\n int j = f(h, i);\r\n return j;\r\n}\r\nlong m() {\r\n *e = 255;\r\n for (; l(b + 1);)\r\n return 0;\r\n for (;;)\r\n ;\r\n}\r\nint main() {\r\n m();\r\n printf(\"%d\\n\", c);\r\n}\r\n```\r\n\r\nDetails can be found here: https://godbolt.org/z/dnvvTPror", "author": "cardigan1008", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [ { "author": "antoniofrighetto", "body": "This looks like a nasty one. Getting the optimized IR via -O3 and setting noinline/optnone to main, we get: https://llvm.godbolt.org/z/vaPvs6d16. \r\n\r\nThis is the initial assembly output with -O1 (which leads to the infinite loop):\r\n\r\n```asm\r\nmain: # @main\r\n push rax\r\n mov rax, qword ptr [e]\r\n mov byte ptr [rax], -1\r\n movsx rax, byte ptr [b]\r\n mov cl, byte ptr [a]\r\n mov byte ptr [rsp + 6], cl\r\n mov byte ptr [rsp + 7], cl\r\n lea rdx, [rsp + 5]\r\n add rdx, rax\r\n mov rax, rdx\r\n.LBB0_1: # %for.cond.i.i.i\r\n add rax, 1\r\n mov cl, byte ptr [rdx + 1]\r\n ...\r\n```\r\nWhereas this is with -O0 (returns 0):\r\n```asm\r\nmain: # @main\r\n sub rsp, 24\r\n mov rax, qword ptr [e]\r\n mov byte ptr [rax], -1\r\n movsx rcx, byte ptr [b]\r\n mov al, byte ptr [a]\r\n mov byte ptr [rsp + 22], al\r\n mov byte ptr [rsp + 23], al\r\n lea rax, [rsp + 21]\r\n add rax, rcx\r\n mov qword ptr [rsp + 8], rax # 8-byte Spill\r\n.LBB0_1: # %for.cond.i.i.i\r\n mov rcx, qword ptr [rsp + 8] # 8-byte Reload\r\n mov rax, rcx\r\n add rax, 1\r\n mov dl, byte ptr [rcx + 1]\r\n```\r\nIn the optimized one, $rdx is set to point to $rsp+0x5, part of the stack slot containing $rax (undef), later dereferenced to set the condition leading to the loop. Initially I thought some bug in regalloc, but to me it seems more something in prologepiloginserter. Function prologue / epilogue seems set up correctly with triple arm64-apple-macosx." }, { "author": "antoniofrighetto", "body": "Looking at the IR better, it seems like InstCombine performs a wrong optimization immediately after inlining `l` into `m`, probably related with default argument conversion done by operator + (which should include integer promotion on types smaller than integer). Alive2 seems to confirm it: https://alive2.llvm.org/ce/z/XAzrip." }, { "author": "antoniofrighetto", "body": "Reduced to:\r\n```llvm\r\n@a = global i8 0, align 1\r\n\r\ndefine i64 @src(i8 noundef %arg) {\r\nentry:\r\n %h.i = alloca [3 x i8], align 1\r\n %conv = sext i8 %arg to i32\r\n %add = add nsw i32 %conv, 1\r\n %2 = load i8, ptr @a, align 1\r\n store i8 %2, ptr %h.i, align 1\r\n %idx.ext.i.i = sext i32 %add to i64\r\n %add.ptr.i.i = getelementptr inbounds i8, ptr %h.i, i64 %idx.ext.i.i\r\n br label %for.cond.i.i\r\n\r\nfor.cond.i.i: ; preds = %for.cond.i.i, %entry\r\n %d.0.i.i = phi ptr [ %add.ptr.i.i, %entry ], [ %incdec.ptr.i.i, %for.cond.i.i ]\r\n %3 = load i8, ptr %d.0.i.i, align 1\r\n %tobool.not.i.i = icmp ne i8 %3, 0\r\n %incdec.ptr.i.i = getelementptr inbounds nuw i8, ptr %d.0.i.i, i64 1\r\n br i1 %tobool.not.i.i, label %for.cond.i.i, label %l.exit\r\n\r\nl.exit: ; preds = %for.cond.i.i\r\n ret i64 0\r\n}\r\n```\r\nWrong sext of add of sext simplified to sext leads to wrong gep offset: https://alive2.llvm.org/ce/z/JaR4j9." }, { "author": "AZero13", "body": "Can we backport this to 19.x?" }, { "author": "antoniofrighetto", "body": "Should be fixed in 929cbe7f596733f85cd274485acc19442dd34a80, thanks for reporting!" }, { "author": "AZero13", "body": "@antoniofrighetto can we please backport this " } ] }

[ "llvm/test/Analysis/ScalarEvolution" ]

{ "fix_commit": "acfd26a93be3fb70013560f3fb894eb9086e7e32", "components": [ "ScalarEvolution" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": [ [ 15753, 15758 ], [ 15764, 15773 ] ], "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": [ "ScalarEvolution::LoopGuards::collectFromBlock" ], "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Analysis/ScalarEvolution/backedge-taken-count-guard-info-with-multiple-predecessors.ll", "commands": [ "opt < %s -disable-output \"-passes=print<scalar-evolution>\" -scalar-evolution-max-iterations=0 -scalar-evolution-classify-expressions=0 2>&1" ], "tests": [ { "test_name": "pr120442", "test_body": "; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\ndeclare void @llvm.assume(i1 noundef) #0\n\ndefine void @pr120442(i1 %c.1, i1 %c.2) {\nentry:\n call void @llvm.assume(i1 %c.1)\n call void @llvm.assume(i1 %c.2)\n br label %outer.header\n\nouter.header: ; preds = %bb, %entry\n %phi7 = phi i32 [ 0, %bb ], [ 0, %entry ]\n br label %inner.header\n\nbb: ; preds = %bb\n br i1 false, label %outer.header, label %bb\n\ninner.header: ; preds = %inner.header, %outer.header\n %phi = phi i32 [ %add, %inner.header ], [ 0, %outer.header ]\n %add = add i32 %phi, 1\n %icmp = icmp ugt i32 %add, 0\n br i1 %icmp, label %exit, label %inner.header\n\nexit: ; preds = %inner.header\n ret void\n}\n\nattributes #0 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Program terminated with signal: SIGKILL Compiler returned: 137", "body": "To reproduce run the following test with -passes=loop-vectorize on opt:\n```\n; ModuleID = './reduced.ll'\nsource_filename = \"./reduced.ll\"\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine void @wombat() #0 gc \"statepoint-example\" {\nbb:\n call void @llvm.assume(i1 false)\n call void @llvm.assume(i1 false)\n br label %bb6\n\nbb1: ; preds = %bb2, %bb6\n br label %bb2\n\nbb2: ; preds = %bb2, %bb1\n %phi = phi i32 [ %add4, %bb2 ], [ 0, %bb1 ]\n %phi3 = phi i32 [ 0, %bb2 ], [ 0, %bb1 ]\n %add = add i32 0, 0\n %add4 = add i32 %phi, 1\n %icmp = icmp ugt i32 %phi, 0\n br i1 %icmp, label %bb1, label %bb2\n\nbb5: ; preds = %bb5\n br i1 false, label %bb6, label %bb5\n\nbb6: ; preds = %bb5, %bb\n %phi7 = phi i32 [ 0, %bb5 ], [ 0, %bb ]\n br label %bb1\n}\n\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\ndeclare void @llvm.assume(i1 noundef) #1\n\nattributes #0 = { \"target-features\"=\"+prfchw,-cldemote,+avx,+aes,+sahf,+pclmul,-xop,+crc32,-amx-fp8,+xsaves,-avx512fp16,-usermsr,-sm4,-egpr,+sse4.1,-avx512ifma,+xsave,+sse4.2,-tsxldtrk,-sm3,-ptwrite,-widekl,-movrs,+invpcid,+64bit,+xsavec,-avx10.1-512,-avx512vpopcntdq,+cmov,-avx512vp2intersect,+avx512cd,+movbe,-avxvnniint8,-ccmp,-amx-int8,-kl,-avx10.1-256,+evex512,-avxvnni,+rtm,+adx,+avx2,-hreset,-movdiri,-serialize,-sha512,-vpclmulqdq,+avx512vl,-uintr,-cf,+clflushopt,-raoint,-cmpccxadd,+bmi,-amx-tile,+sse,-avx10.2-256,-gfni,-avxvnniint16,-amx-fp16,-zu,-ndd,+xsaveopt,+rdrnd,+avx512f,-amx-bf16,-avx512bf16,-avx512vnni,-push2pop2,+cx8,+avx512bw,+sse3,+pku,-nf,-amx-tf32,-amx-avx512,+fsgsbase,-clzero,-mwaitx,-lwp,+lzcnt,-sha,-movdir64b,-ppx,-wbnoinvd,-enqcmd,-amx-transpose,-avx10.2-512,-avxneconvert,-tbm,-pconfig,-amx-complex,+ssse3,+cx16,+bmi2,+fma,+popcnt,-avxifma,+f16c,-avx512bitalg,-rdpru,+clwb,+mmx,+sse2,+rdseed,-avx512vbmi2,-prefetchi,-amx-movrs,-rdpid,-fma4,-avx512vbmi,-shstk,-vaes,-waitpkg,-sgx,+fxsr,+avx512dq,-sse4a,-avx512f\" }\nattributes #1 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) \"target-features\"=\"+prfchw,-cldemote,+avx,+aes,+sahf,+pclmul,-xop,+crc32,-amx-fp8,+xsaves,-avx512fp16,-usermsr,-sm4,-egpr,+sse4.1,-avx512ifma,+xsave,+sse4.2,-tsxldtrk,-sm3,-ptwrite,-widekl,-movrs,+invpcid,+64bit,+xsavec,-avx10.1-512,-avx512vpopcntdq,+cmov,-avx512vp2intersect,+avx512cd,+movbe,-avxvnniint8,-ccmp,-amx-int8,-kl,-avx10.1-256,+evex512,-avxvnni,+rtm,+adx,+avx2,-hreset,-movdiri,-serialize,-sha512,-vpclmulqdq,+avx512vl,-uintr,-cf,+clflushopt,-raoint,-cmpccxadd,+bmi,-amx-tile,+sse,-avx10.2-256,-gfni,-avxvnniint16,-amx-fp16,-zu,-ndd,+xsaveopt,+rdrnd,+avx512f,-amx-bf16,-avx512bf16,-avx512vnni,-push2pop2,+cx8,+avx512bw,+sse3,+pku,-nf,-amx-tf32,-amx-avx512,+fsgsbase,-clzero,-mwaitx,-lwp,+lzcnt,-sha,-movdir64b,-ppx,-wbnoinvd,-enqcmd,-amx-transpose,-avx10.2-512,-avxneconvert,-tbm,-pconfig,-amx-complex,+ssse3,+cx16,+bmi2,+fma,+popcnt,-avxifma,+f16c,-avx512bitalg,-rdpru,+clwb,+mmx,+sse2,+rdseed,-avx512vbmi2,-prefetchi,-amx-movrs,-rdpid,-fma4,-avx512vbmi,-shstk,-vaes,-waitpkg,-sgx,+fxsr,+avx512dq,-sse4a,-avx512f\" }\n```\n\nReproducer: https://godbolt.org/z/x7WrWvoxa\n\n", "author": "TatyanaDoubts", "labels": [ "llvm:SCEV", "crash" ], "comments": [ { "author": "TatyanaDoubts", "body": "The godbolt is not informative. But locally I see the following stack dump:\n```\nbin/opt -S -passes=loop-vectorize reduced-stripped.ll\nLLVM ERROR: SmallVector unable to grow. Requested capacity (4294967296) is larger than maximum value for size type (4294967295)\n0. Program arguments: bin/opt -S -passes=loop-vectorize reduced-stripped.ll\n1. Running pass \"function(loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>)\" on module \"reduced-stripped.ll\"\n2. Running pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"wombat\"\n #0 0x00007f945d6be47b llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) llvm/lib/Support/Unix/Signals.inc:727:3\n #1 0x00007f945d6bbfbb llvm::sys::RunSignalHandlers() llvm/lib/Support/Signals.cpp:105:20\n #2 0x00007f945d6bc2fe SignalHandler(int) llvm/lib/Support/Unix/Signals.inc:413:1\n #3 0x00007f9462a89980 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x12980)\n #4 0x00007f945c0fbe87 raise (/lib/x86_64-linux-gnu/libc.so.6+0x3ee87)\n #5 0x00007f945c0fd7f1 abort (/lib/x86_64-linux-gnu/libc.so.6+0x407f1)\n #6 0x00007f945d435674 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>::_M_replace(unsigned long, unsigned long, char const*, unsigned long) gcc-13.3.0-rhel6/include/c++/13.3.0/bits/basic_string.tcc:545:21\n #7 0x00007f945d435674 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>::assign(char const*) (.isra.0.cold) gcc-13.3.0-rhel6/include/c++/13.3.0/bits\n/basic_string.h:1684:19\n #8 0x00007f945d63c540 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>::replace(unsigned long, unsigned long, char const*, unsigned long) gcc-13.3.0-rhel6/include/c++/13.3.0/bits/basic_string.h:2208:19\n #9 0x00007f945d63c540 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>::insert(unsigned long, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const\n&) gcc-13.3.0-rhel6/include/c++/13.3.0/bits/basic_string.h:1895:29\n#10 0x00007f945d63c540 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> std::operator+<char, std::char_traits<char>, std::allocator<char>>(std::__cxx11::basic_string<char, std::ch\nar_traits<char>, std::allocator<char>>&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>&&) gcc-13.3.0-rhel6/include/c++/13.3.0/bits/basic_string.\nh:3666:35\n#11 0x00007f945d63c540 report_size_overflow(unsigned long, unsigned long) (.constprop.0) llvm/lib/Support/SmallVector.cpp:65:73\n#12 0x00007f945d63c79e ......\n#13 0x00007f945f6b3c9c llvm::PointerIntPairInfo<llvm::Value*, 1u, llvm::PointerLikeTypeTraits<llvm::Value*>>::updateInt(long, long)\nllvm/include/llvm/ADT/PointerIntPair.h:213:55\n#14 0x00007f945f6b3c9c llvm::PointerIntPair<llvm::Value*, 1u, bool, llvm::PointerLikeTypeTraits<llvm::Value*>, llvm::PointerIntPairInfo<llvm::Value*, 1u, llvm::PointerLikeTypeTraits<llvm::Value*>>>::setPointer\nAndInt(llvm::Value*, bool) & llvm/include/llvm/ADT/PointerIntPair.h:111:11\n#15 0x00007f945f6b3c9c llvm::PointerIntPair<llvm::Value*, 1u, bool, llvm::PointerLikeTypeTraits<llvm::Value*>, llvm::PointerIntPairInfo<llvm::Value*, 1u, llvm::PointerLikeTypeTraits<llvm::Value*>>>::PointerInt\nPair(llvm::Value*, bool) llvm/include/llvm/ADT/PointerIntPair.h:89:21\n#16 0x00007f945f6b3c9c llvm::PointerIntPair<llvm::Value*, 1u, bool, llvm::PointerLikeTypeTraits<llvm::Value*>, llvm::PointerIntPairInfo<llvm::Value*, 1u, llvm::PointerLikeTypeTraits<llvm::Value*>>>& llvm::Smal\nlVectorTemplateBase<llvm::PointerIntPair<llvm::Value*, 1u, bool, llvm::PointerLikeTypeTraits<llvm::Value*>, llvm::PointerIntPairInfo<llvm::Value*, 1u, llvm::PointerLikeTypeTraits<llvm::Value*>>>, true>::growAn\ndEmplaceBack<llvm::Value*, bool>(llvm::Value*&&, bool&&) llvm/include/llvm/ADT/SmallVector.h:559:14\n#17 0x00007f945f6b3c9c llvm::PointerIntPair<llvm::Value*, 1u, bool, llvm::PointerLikeTypeTraits<llvm::Value*>, llvm::PointerIntPairInfo<llvm::Value*, 1u, llvm::PointerLikeTypeTraits<llvm::Value*>>>& llvm::Smal\nlVectorImpl<llvm::PointerIntPair<llvm::Value*, 1u, bool, llvm::PointerLikeTypeTraits<llvm::Value*>, llvm::PointerIntPairInfo<llvm::Value*, 1u, llvm::PointerLikeTypeTraits<llvm::Value*>>>>::emplace_back<llvm::V\nalue*, bool>(llvm::Value*&&, bool&&) llvm/include/llvm/ADT/SmallVector.h:946:38\n#18 0x00007f945f6b3c9c llvm::ScalarEvolution::LoopGuards::collectFromBlock(llvm::ScalarEvolution&, llvm::ScalarEvolution::LoopGuards&, llvm::BasicBlock const*, llvm::BasicBlock const*, llvm::SmallPtrSetImpl<llvm::BasicBlock const*>&, unsigned int) llvm/lib/Analysis/ScalarEvolution.cpp:15708:23\n#19 0x00007f945f6b51fa llvm::DenseMapIterator<llvm::BasicBlock const*, llvm::ScalarEvolution::LoopGuards, llvm::DenseMapInfo<llvm::BasicBlock const*, void>, llvm::detail::DenseMapPair<llvm::BasicBlock const*, llvm::ScalarEvolution::LoopGuards>, false>::operator->() const llvm/include/llvm/ADT/DenseMap.h:1238:5\n#20 0x00007f945f6b51fa llvm::ScalarEvolution::LoopGuards::collectFromPHI(llvm::ScalarEvolution&, llvm::ScalarEvolution::LoopGuards&, llvm::PHINode const&, llvm::SmallPtrSetImpl<llvm::BasicBlock const*>&, llvm::SmallDenseMap<llvm::BasicBlock const*, llvm::ScalarEvolution::LoopGuards, 4u, llvm::DenseMapInfo<llvm::BasicBlock const*, void>, llvm::detail::DenseMapPair<llvm::BasicBlock const*, llvm::ScalarEvolution::LoopGuards>>&, unsigned int)::'lambda'(unsigned int)::operator()(unsigned int) const llvm/lib/Analysis/ScalarEvolution.cpp:15285:25\n#21 0x00007f945f6b200c llvm::ScalarEvolution::LoopGuards::collectFromPHI(llvm::ScalarEvolution&, llvm::ScalarEvolution::LoopGuards&, llvm::PHINode const&, llvm::SmallPtrSetImpl<llvm::BasicBlock const*>&, llvm::SmallDenseMap<llvm::BasicBlock const*, llvm::ScalarEvolution::LoopGuards, 4u, llvm::DenseMapInfo<llvm::BasicBlock const*, void>, llvm::detail::DenseMapPair<llvm::BasicBlock const*, llvm::ScalarEvolution::LoopGuards>>&, unsigned int) llvm/lib/Analysis/ScalarEvolution.cpp:15317:26\n#22 0x00007f945f6b40af llvm::BasicBlock::phi_iterator_impl<llvm::PHINode const, llvm::ilist_iterator_w_bits<llvm::ilist_detail::node_options<llvm::Instruction, true, false, void, true, llvm::BasicBlock>, false, true>>::operator++() llvm/include/llvm/IR/BasicBlock.h:505:7\n#23 0x00007f945f6b40af llvm::ScalarEvolution::LoopGuards::collectFromBlock(llvm::ScalarEvolution&, llvm::ScalarEvolution::LoopGuards&, llvm::BasicBlock const*, llvm::BasicBlock const*, llvm::SmallPtrSetImpl<llvm::BasicBlock const*>&, unsigned int) llvm/lib/Analysis/ScalarEvolution.cpp:15724:40\n#24 0x00007f945f6b534b llvm::SmallPtrSetImplBase::~SmallPtrSetImplBase() llvm/include/llvm/ADT/SmallPtrSet.h:87:5\n#25 0x00007f945f6b534b llvm::SmallPtrSetImpl<llvm::BasicBlock const*>::~SmallPtrSetImpl() llvm/include/llvm/ADT/SmallPtrSet.h:368:7\n#26 0x00007f945f6b534b llvm::SmallPtrSet<llvm::BasicBlock const*, 8u>::~SmallPtrSet() llvm/include/llvm/ADT/SmallPtrSet.h:524:7\n#27 0x00007f945f6b534b llvm::ScalarEvolution::LoopGuards::collect(llvm::Loop const*, llvm::ScalarEvolution&) llvm/lib/Analysis/ScalarEvolution.cpp:15266:1\n#28 0x00007f945f6b539a llvm::ScalarEvolution::LoopGuards::rewrite(llvm::SCEV const*) const llvm/lib/Analysis/ScalarEvolution.cpp:15892:3\n#29 0x00007f945f6b539a llvm::ScalarEvolution::applyLoopGuards(llvm::SCEV const*, llvm::ScalarEvolution::LoopGuards const&) llvm/lib/Analysis/ScalarEvolution.cpp:15905:24\n#30 0x00007f945f6b539a llvm::ScalarEvolution::applyLoopGuards(llvm::SCEV const*, llvm::Loop const*) llvm/lib/Analysis/ScalarEvolution.cpp:15900:25\n#31 0x00007f945f1e1c35 llvm::LoopVectorizationCostModel::computeMaxVF(llvm::ElementCount, unsigned int) llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:4119:38\n#32 0x00007f945f1e5bfb llvm::LoopVectorizationPlanner::plan(llvm::ElementCount, unsigned int) llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7150:51\n#33 0x00007f945f1e7b71 llvm::LoopVectorizePass::processLoop(llvm::Loop*) llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:10095:45\n#34 0x00007f945f1eb181 llvm::LoopVectorizePass::runImpl(llvm::Function&) llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:10441:27\n#35 0x00007f945f1eb777 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:10478:39\n#36 0x00007f94606acedd llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) llvm/include/llvm/IR/PassManagerInternal.h:91:3\n#37 0x00007f945d8d889f llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) llvm/include/llvm/IR/PassManagerImpl.h:85:18\n#38 0x00007f94601642ed llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) llvm/include/llvm/IR/PassManagerInternal.h:91:3\n#39 0x00007f945d8d8dea llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) llvm/lib/IR/PassManager.cpp:129:41\n#40 0x00007f94601646dd llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) llvm/include/llvm/IR/PassManagerInternal.h:91:3\n#41 0x00007f945d8da12f llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) llvm/include/llvm/IR/PassManagerImpl.h:85:18\n#42 0x000000000042ccba llvm::SmallPtrSetImplBase::~SmallPtrSetImplBase() llvm/include/llvm/ADT/SmallPtrSet.h:87:5\n#43 0x000000000042ccba llvm::SmallPtrSetImpl<llvm::AnalysisKey*>::~SmallPtrSetImpl() llvm/include/llvm/ADT/SmallPtrSet.h:368:7\n#44 0x000000000042ccba llvm::SmallPtrSet<llvm::AnalysisKey*, 2u>::~SmallPtrSet() llvm/include/llvm/ADT/SmallPtrSet.h:524:7\n#45 0x000000000042ccba llvm::PreservedAnalyses::~PreservedAnalyses() llvm/include/llvm/IR/Analysis.h:111:7\n#46 0x000000000042ccba llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) llvm/tools/opt/NewPMDriver.cpp:553:10\n#47 0x00000000004207e3 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>::~basic_string() gcc-13.3.0-rhel6/include/c++/13.3.0/bits/basic_string.h:804:19\n#48 0x00000000004207e3 optMain llvm/tools/opt/optdriver.cpp:765:3\n#49 0x00007f945c0dec87 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c87)\n......\n```" }, { "author": "fhahn", "body": "@juliannagele could you take a look? Seems like a crash in `collectFromPHI` you recently added" }, { "author": "juliannagele", "body": "> [@juliannagele](https://github.com/juliannagele) could you take a look? Seems like a crash in `collectFromPHI` you recently added\n\nSure, checking!" }, { "author": "juliannagele", "body": "Thanks for the report, should be fixed here: https://github.com/llvm/llvm-project/pull/120442" } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "2a6b09e0d3d3c1a05d3d5165202a6e68900974b1", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": [ [ 2958, 2968 ], [ 2976, 2983 ] ], "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 5738, 5751 ], [ 5760, 5767 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": [ "VPInterleaveRecipe::computeCost" ], "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationCostModel::getInterleaveGroupCost" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/X86/interleave-cost.ll", "commands": [ "opt -p loop-vectorize -S %s" ], "tests": [ { "test_name": "geps_feeding_interleave_groups_with_reuse", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-apple-macosx10.15.0\"\n\ndefine void @geps_feeding_interleave_groups_with_reuse(ptr %arg, i64 %arg1, ptr %arg2) #0 {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %shl.iv.5 = shl i64 %iv, 5\n %gep.1 = getelementptr i8, ptr %arg, i64 %shl.iv.5\n %add.5 = or disjoint i64 %shl.iv.5, 16\n %gep.2 = getelementptr i8, ptr %arg, i64 %add.5\n %shl.iv.4 = shl i64 %iv, 4\n %gep.3 = getelementptr i8, ptr %arg2, i64 %shl.iv.4\n %l.1 = load float, ptr %gep.1, align 4\n %l.2 = load float, ptr %gep.2, align 4\n %add.1 = fadd float %l.1, %l.2\n %mul.1 = fmul float %add.1, 0.000000e+00\n store float %mul.1, ptr %gep.3, align 4\n %gep.4 = getelementptr i8, ptr %gep.1, i64 4\n %l.3 = load float, ptr %gep.4, align 4\n %gep.5 = getelementptr i8, ptr %gep.2, i64 4\n %l.4 = load float, ptr %gep.5, align 4\n %add.2 = fadd float %l.3, %l.4\n %mul.2 = fmul float %add.2, 0.000000e+00\n %gep.6 = getelementptr i8, ptr %gep.3, i64 4\n store float %mul.2, ptr %gep.6, align 4\n %gep.7 = getelementptr i8, ptr %gep.1, i64 8\n %l.5 = load float, ptr %gep.7, align 4\n %gep.8 = getelementptr i8, ptr %gep.2, i64 8\n %l.6 = load float, ptr %gep.8, align 4\n %add.3 = fadd float %l.5, %l.6\n %mul.3 = fmul float %add.3, 0.000000e+00\n %gep.9 = getelementptr i8, ptr %gep.3, i64 8\n store float %mul.3, ptr %gep.9, align 4\n %i27 = getelementptr i8, ptr %gep.1, i64 12\n %l.7 = load float, ptr %i27, align 4\n %gep.10 = getelementptr i8, ptr %gep.2, i64 12\n %l.8 = load float, ptr %gep.10, align 4\n %add.4 = fadd float %l.7, %l.8\n %mul.4 = fmul float %add.4, 0.000000e+00\n %gep.11 = getelementptr i8, ptr %gep.3, i64 12\n store float %mul.4, ptr %gep.11, align 4\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv, %arg1\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+sse4.2\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "geps_feeding_interleave_groups_with_reuse2", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-apple-macosx10.15.0\"\n\ndefine void @geps_feeding_interleave_groups_with_reuse2(ptr %A, ptr %B, i64 %N) #0 {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next.7, %loop ]\n %shr.1 = lshr exact i64 %iv, 1\n %gep.B = getelementptr nusw i32, ptr %B, i64 %shr.1\n %l = load i32, ptr %gep.B, align 4\n %gep.A = getelementptr i32, ptr %A, i64 %iv\n store i32 %l, ptr %gep.A, align 4\n %iv.next = or disjoint i64 %iv, 1\n %gep.A.1 = getelementptr i32, ptr %A, i64 %iv.next\n store i32 0, ptr %gep.A.1, align 4\n %iv.next.1 = or disjoint i64 %iv, 2\n %shr.2 = lshr exact i64 %iv.next.1, 1\n %gep.B.2 = getelementptr i32, ptr %B, i64 %shr.2\n %0 = load i32, ptr %gep.B.2, align 4\n %gep.A.2 = getelementptr i32, ptr %A, i64 %iv.next.1\n store i32 %0, ptr %gep.A.2, align 4\n %iv.next.2 = or disjoint i64 %iv, 3\n %gep.A.3 = getelementptr i32, ptr %A, i64 %iv.next.2\n store i32 0, ptr %gep.A.3, align 4\n %iv.next.3 = or disjoint i64 %iv, 4\n %gep.B.4 = getelementptr i32, ptr %B, i64 %iv\n %1 = load i32, ptr %gep.B.4, align 4\n %gep.A.4 = getelementptr i32, ptr %A, i64 %iv.next.3\n store i32 %1, ptr %gep.A.4, align 4\n %iv.next.4 = or disjoint i64 %iv, 5\n %gep.A.5 = getelementptr i32, ptr %A, i64 %iv.next.4\n store i32 0, ptr %gep.A.5, align 4\n %iv.next.5 = or disjoint i64 %iv, 6\n %gep.A.6 = getelementptr i32, ptr %A, i64 %iv.next.5\n store i32 0, ptr %gep.A.6, align 4\n %iv.next.6 = or disjoint i64 %iv, 7\n %gep.A.7 = getelementptr i32, ptr %A, i64 %iv.next.6\n store i32 0, ptr %gep.A.7, align 4\n %iv.next.7 = add nuw nsw i64 %iv, 8\n %ec = icmp eq i64 %iv, %N\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n\nattributes #0 = { \"min-legal-vector-width\"=\"0\" \"target-cpu\"=\"cascadelake\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "interleave_store_double_i64_2", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-apple-macosx10.15.0\"\n\ndefine void @interleave_store_double_i64_2(ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %gep.1 = getelementptr { i64, double }, ptr %dst, i64 %iv, i32 1\n store double 0.000000e+00, ptr %gep.1, align 8\n %gep.0 = getelementptr { i64, double }, ptr %dst, i64 %iv\n store i64 %iv, ptr %gep.0, align 8\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv, 1\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "interleave_store_i64_double", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-apple-macosx10.15.0\"\n\ndefine void @interleave_store_i64_double(ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %gep.0 = getelementptr { double, i64 }, ptr %dst, i64 %iv\n store double 0.000000e+00, ptr %gep.0, align 8\n %gep.1 = getelementptr { double, i64 }, ptr %dst, i64 %iv, i32 1\n store i64 %iv, ptr %gep.1, align 8\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv, 1\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_free_instructions_feeding_geps_for_interleave_groups", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-apple-macosx10.15.0\"\n\ndefine void @test_free_instructions_feeding_geps_for_interleave_groups(ptr noalias %p.invar, ptr noalias %dst.1, ptr noalias %dst.2) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %l.0 = load float, ptr %p.invar, align 4\n %iv.mul = shl i64 %iv, 2\n %gep.dst.19 = getelementptr float, ptr %dst.1, i64 %iv.mul\n store float %l.0, ptr %gep.dst.19, align 4\n %l.1 = load float, ptr %p.invar, align 4\n %add.1 = or disjoint i64 %iv.mul, 1\n %gep.dst.119 = getelementptr float, ptr %dst.1, i64 %add.1\n store float %l.1, ptr %gep.dst.119, align 4\n %add.2 = or disjoint i64 %iv.mul, 2\n %gep.dst.129 = getelementptr float, ptr %dst.1, i64 %add.2\n store float 0.000000e+00, ptr %gep.dst.129, align 4\n %add.3 = or disjoint i64 %iv.mul, 3\n %gep.dst.140 = getelementptr float, ptr %dst.1, i64 %add.3\n store float 0.000000e+00, ptr %gep.dst.140, align 4\n %l.2 = load float, ptr %p.invar, align 4\n %gep.dst.247 = getelementptr float, ptr %dst.2, i64 %iv.mul\n store float %l.2, ptr %gep.dst.247, align 4\n %gep.dst.255 = getelementptr float, ptr %dst.2, i64 %add.1\n store float 0.000000e+00, ptr %gep.dst.255, align 4\n %gep.dst.265 = getelementptr float, ptr %dst.2, i64 %add.2\n store float 0.000000e+00, ptr %gep.dst.265, align 4\n %gep.dst.276 = getelementptr float, ptr %dst.2, i64 %add.3\n store float 0.000000e+00, ptr %gep.dst.276, align 4\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, 0\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "interleave_store_double_i64", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-apple-macosx10.15.0\"\n\ndefine void @interleave_store_double_i64(ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %gep.1 = getelementptr { double, i64 }, ptr %dst, i64 %iv, i32 1\n store i64 %iv, ptr %gep.1, align 8\n %gep.0 = getelementptr { double, i64 }, ptr %dst, i64 %iv\n store double 0.000000e+00, ptr %gep.0, align 8\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv, 1\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "interleave_store_i64_double_2", "test_body": "target datalayout = \"e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-apple-macosx10.15.0\"\n\ndefine void @interleave_store_i64_double_2(ptr %dst) {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %gep.0 = getelementptr { i64, double }, ptr %dst, i64 %iv\n store i64 %iv, ptr %gep.0, align 8\n %gep.1 = getelementptr { i64, double }, ptr %dst, i64 %iv, i32 1\n store double 0.000000e+00, ptr %gep.1, align 8\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv, 1\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[clang] Assertion in `llvm::LoopVectorizationPlanner::computeBestVF()`", "body": "When building the METIS (v5.1.0) library (GKLib) an assertion is thrown during LoopVectorize. This error was introduced within the past few days (see git sha of broken and working versions below).\r\n\r\n#### Error:\r\n```shell\r\nclang: /mnt/thera/cicd/actions_work/ActionsRunner/ActionsRunner/trunk_repos/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7457: llvm::VectorizationFactor llvm::LoopVectorizationPlanner::computeBestVF(): Assertion `(BestFactor.Width == LegacyVF.Width || planContainsAdditionalSimplifications(getPlanFor(BestFactor.Width), CostCtx, OrigLoop)) && \" VPlan cost model and legacy cost model disagreed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0. Program arguments: /share/contrib-modules/Core/llvm/2024-10-16/bin/clang -I/home/bcornill/libraries/metis-5.1.0/GKlib/. -I/home/bcornill/libraries/metis-5.1.0/GKlib/test -DLINUX -D_FILE_OFFSET_BITS=64 -DNDEBUG -DNDEBUG2 -DHAVE_EXECINFO_H -DHAVE_GETLINE -O3 -MD -MT CMakeFiles/GKlib.dir/blas.c.o -MF CMakeFiles/GKlib.dir/blas.c.o.d -o CMakeFiles/GKlib.dir/blas.c.o -c /home/bcornill/libraries/metis-5.1.0/GKlib/blas.c\r\n1. <eof> parser at end of file\r\n2. Optimizer\r\n3. Running pass \"function<eager-inv>(float2int,lower-constant-intrinsics,chr,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-verify-fixpoint>,loop-unroll<O3>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"/home/bcornill/libraries/metis-5.1.0/GKlib/blas.c\"\r\n4. Running pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"gk_dargmax_n\"\r\n #0 0x00007fa15911cc8b llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMSupport.so.20.0git+0x1c2c8b)\r\n #1 0x00007fa15911a664 llvm::sys::CleanupOnSignal(unsigned long) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMSupport.so.20.0git+0x1c0664)\r\n #2 0x00007fa1590227f8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0\r\n #3 0x00007fa1615e0dd0 __restore_rt sigaction.c:0:0\r\n #4 0x00007fa15821e70f raise (/lib64/libc.so.6+0x3770f)\r\n #5 0x00007fa158208b25 abort (/lib64/libc.so.6+0x21b25)\r\n #6 0x00007fa1582089f9 _nl_load_domain.cold.0 loadmsgcat.c:0:0\r\n #7 0x00007fa158216cc6 .annobin___GI___assert_fail.end assert.c:0:0\r\n #8 0x00007fa15db3af1b llvm::LoopVectorizationPlanner::computeBestVF() (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMVectorize.so.20.0git+0xb5f1b)\r\n #9 0x00007fa15db52d46 llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMVectorize.so.20.0git+0xcdd46)\r\n#10 0x00007fa15db55ed1 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMVectorize.so.20.0git+0xd0ed1)\r\n#11 0x00007fa15db56517 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMVectorize.so.20.0git+0xd1517)\r\n#12 0x00007fa155d90a9e llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/../lib/libLLVMPasses.so.20.0git+0x76a9e)\r\n#13 0x00007fa15998eab7 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMCore.so.20.0git+0x323ab7)\r\n#14 0x00007fa16434e17e llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMX86CodeGen.so.20.0git+0xa917e)\r\n#15 0x00007fa15998ce55 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMCore.so.20.0git+0x321e55)\r\n#16 0x00007fa16434e56e llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMX86CodeGen.so.20.0git+0xa956e)\r\n#17 0x00007fa15998d9bc llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMCore.so.20.0git+0x3229bc)\r\n#18 0x00007fa15faab288 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#19 0x00007fa15faaeb9c clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libclangCodeGen.so.20.0git+0x111b9c)\r\n#20 0x00007fa15ffdd293 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libclangCodeGen.so.20.0git+0x640293)\r\n#21 0x00007fa150c5592c clang::ParseAST(clang::Sema&, bool, bool) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/../lib/libclangParse.so.20.0git+0x3c92c)\r\n#22 0x00007fa15d75dee9 clang::FrontendAction::Execute() (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libclangFrontend.so.20.0git+0x138ee9)\r\n#23 0x00007fa15d6ceb05 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libclangFrontend.so.20.0git+0xa9b05)\r\n#24 0x00007fa1613cad83 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libclangFrontendTool.so.20.0git+0x4d83)\r\n#25 0x00000000004141c7 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/share/contrib-modules/Core/llvm/2024-10-16/bin/clang+0x4141c7)\r\n#26 0x000000000040b96a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#27 0x00007fa15d135049 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0\r\n#28 0x00007fa159022cb4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libLLVMSupport.so.20.0git+0xc8cb4)\r\n#29 0x00007fa15d13589e clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0\r\n#30 0x00007fa15d0f22fc clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libclangDriver.so.20.0git+0x922fc)\r\n#31 0x00007fa15d0f33fd clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libclangDriver.so.20.0git+0x933fd)\r\n#32 0x00007fa15d1039c4 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/../lib/libclangDriver.so.20.0git+0xa39c4)\r\n#33 0x0000000000410b5b clang_main(int, char**, llvm::ToolContext const&) (/share/contrib-modules/Core/llvm/2024-10-16/bin/clang+0x410b5b)\r\n#34 0x000000000040b074 main (/share/contrib-modules/Core/llvm/2024-10-16/bin/clang+0x40b074)\r\n#35 0x00007fa15820a6a3 __libc_start_main (/lib64/libc.so.6+0x236a3)\r\n#36 0x000000000040b0be _start (/share/contrib-modules/Core/llvm/2024-10-16/bin/clang+0x40b0be)\r\nclang: error: clang frontend command failed with exit code 134 (use -v to see invocation)\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project ae68d532f810e217c747b10b26aeea3bb84c3844)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin\r\nBuild config: +assertions\r\nConfiguration file: /share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/clang.cfg\r\nclang: note: diagnostic msg:\r\n********************\r\n\r\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\r\nPreprocessed source(s) and associated run script(s) are located at:\r\nclang: note: diagnostic msg: /tmp/blas-9fe25d.c\r\nclang: note: diagnostic msg: /tmp/blas-9fe25d.sh\r\nclang: note: diagnostic msg:\r\n\r\n********************\r\n```\r\n#### Reproducer:\r\n[gklib-blas.tar.gz](https://github.com/user-attachments/files/17437550/gklib-blas.tar.gz)\r\n\r\n#### Broken Versions:\r\n```shell\r\n>> clang --version\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project ae68d532f810e217c747b10b26aeea3bb84c3844)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin\r\nBuild config: +assertions\r\nConfiguration file: /share/contrib-modules/Core/llvm/2024-10-16_20.0-0/bin/clang.cfg\r\n\r\n>> clang --version\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project af90e7c5161de9a36af768dd5c9d73464e0eed64)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /share/contrib-modules/Core/llvm/2024-10-18_20.0-0/bin\r\nBuild config: +assertions\r\nConfiguration file: /share/contrib-modules/Core/llvm/2024-10-18_20.0-0/bin/clang.cfg\r\n```\r\n\r\n#### Working version:\r\n```shell\r\n>> clang --version\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project 48deb3568eb2452ff385b04b8f71c34121f47387)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /share/contrib-modules/Core/llvm/2024-10-13_20.0-0/bin\r\nBuild config: +assertions\r\nConfiguration file: /share/contrib-modules/Core/llvm/2024-10-13_20.0-0/bin/clang.cfg\r\n```", "author": "bcornille", "labels": [ "vectorizers", "crash" ], "comments": [ { "author": "fhahn", "body": "Thanks, taking a look!" } ] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "709abacdc350d63c61888607edb28ce272daa0a0", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 17224, 17232 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::collectValuesToDemote" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/abs-overflow-incorrect-minbws.ll", "commands": [ "opt -S --passes=slp-vectorizer < %s" ], "tests": [ { "test_name": "test", "test_body": "define i32 @test(i32 %n) {\nentry:\n %n1 = add i32 %n, 1\n %zn1 = zext nneg i32 %n1 to i64\n %m1 = mul nuw nsw i64 %zn1, 273837369\n %a1 = call i64 @llvm.abs.i64(i64 %m1, i1 true)\n %t1 = trunc i64 %a1 to i32\n %n2 = add i32 %n, 2\n %zn2 = zext nneg i32 %n2 to i64\n %m2 = mul nuw nsw i64 %zn2, 273837369\n %a2 = call i64 @llvm.abs.i64(i64 %m2, i1 true)\n %t2 = trunc i64 %a2 to i32\n %res1 = add i32 %t1, %t2\n ret i32 %res1\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i64 @llvm.abs.i64(i64, i1 immarg) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLP] SLP Vectorizer miscompile from reducing abs bitwidth", "body": "Bisected miscompile to this change https://github.com/llvm/llvm-project/commit/4a1c53f9fabbc18d436dcd4d5b572b82656fbbf9\r\n\r\nReduced internal test to this example:\r\nhttps://godbolt.org/z/njWYP9exd\r\n```llvm\r\ndefine dso_local noundef i32 @test(i32 %n) local_unnamed_addr #0 {\r\nentry:\r\n %n1 = add i32 %n, 1\r\n %zn1 = zext nneg i32 %n1 to i64\r\n %m1 = mul nuw nsw i64 %zn1, 273837369\r\n %a1 = call noundef i64 @llvm.abs.i64(i64 %m1, i1 true)\r\n %t1 = trunc i64 %a1 to i32\r\n %n2 = add i32 %n, 2\r\n %zn2 = zext nneg i32 %n2 to i64\r\n %m2 = mul nuw nsw i64 %zn2, 273837369\r\n %a2 = call noundef i64 @llvm.abs.i64(i64 %m2, i1 true)\r\n %t2 = trunc i64 %a2 to i32\r\n\r\n %res1 = add i32 %t1, %t2\r\n ret i32 %res1\r\n}\r\n```\r\nRunning slp vectorizer on it gives\r\n```llvm\r\ndefine dso_local noundef i32 @test(i32 %n) local_unnamed_addr {\r\n %0 = insertelement <2 x i32> poison, i32 %n, i32 0\r\n %1 = shufflevector <2 x i32> %0, <2 x i32> poison, <2 x i32> zeroinitializer\r\n %2 = add <2 x i32> %1, <i32 1, i32 2>\r\n %3 = mul <2 x i32> %2, <i32 273837369, i32 273837369>\r\n %4 = call <2 x i32> @llvm.abs.v2i32(<2 x i32> %3, i1 false)\r\n %5 = extractelement <2 x i32> %4, i32 0\r\n %6 = extractelement <2 x i32> %4, i32 1\r\n %res1 = add i32 %5, %6\r\n ret i32 %res1\r\n}\r\n```\r\nwhich is incorrect. Counterexample by alive2:\r\nhttps://alive2.llvm.org/ce/z/cEcY-u", "author": "danilaml", "labels": [ "miscompilation", "release:backport", "llvm:SLPVectorizer" ], "comments": [ { "author": "AZero13", "body": "Do we plan on backporting this to 19.x @alexey-bataev " } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "34777c238b117b52dd41a9d12e8b54fb83677a12", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": [ [ 361, 368 ], [ 376, 382 ] ], "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/blend-in-header.ll", "commands": [ "opt -p loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S %s" ], "tests": [ { "test_name": "<module>", "test_body": "\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2\"\n\n; Test with blend recipe in header VPBB, from\n; https://github.com/llvm/llvm-project/issues/88297.\ndefine i64 @pr88297() {\n;\nentry:\n br label %loop.header\n\nloop.header:\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]\n br i1 false, label %loop.latch, label %then\n\nthen:\n br label %loop.latch\n\nloop.latch:\n %r = phi i64 [ 1, %then ], [ 0, %loop.header ]\n %iv.next = add i32 %iv, 1\n %icmp = icmp sgt i32 %iv, 1000\n br i1 %icmp, label %exit, label %loop.header\n\nexit:\n %r.lcssa = phi i64 [ %r, %loop.latch ]\n ret i64 %r.lcssa\n}\n\ndefine i64 @pr88297_incoming_ops_reordered() {\n;\nentry:\n br label %loop.header\n\nloop.header:\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]\n br i1 false, label %loop.latch, label %then\n\nthen:\n br label %loop.latch\n\nloop.latch:\n %r = phi i64 [ 0, %loop.header ], [ 1, %then ]\n %iv.next = add i32 %iv, 1\n %icmp = icmp sgt i32 %iv, 1000\n br i1 %icmp, label %exit, label %loop.header\n\nexit:\n %r.lcssa = phi i64 [ %r, %loop.latch ]\n ret i64 %r.lcssa\n}\n\ndefine i64 @invar_cond(i1 %c) {\n;\nentry:\n br label %loop.header\n\nloop.header:\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]\n br i1 %c, label %loop.latch, label %then\n\nthen:\n br label %loop.latch\n\nloop.latch:\n %r = phi i64 [ 1, %then ], [ 0, %loop.header ]\n %iv.next = add i32 %iv, 1\n %icmp = icmp sgt i32 %iv, 1000\n br i1 %icmp, label %exit, label %loop.header\n\nexit:\n %r.lcssa = phi i64 [ %r, %loop.latch ]\n ret i64 %r.lcssa\n}\n\ndefine i64 @invar_cond_incoming_ops_reordered(i1 %c) {\n;\nentry:\n br label %loop.header\n\nloop.header:\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]\n br i1 %c, label %loop.latch, label %then\n\nthen:\n br label %loop.latch\n\nloop.latch:\n %r = phi i64 [ 0, %loop.header ], [ 1, %then ]\n %iv.next = add i32 %iv, 1\n %icmp = icmp sgt i32 %iv, 1000\n br i1 %icmp, label %exit, label %loop.header\n\nexit:\n %r.lcssa = phi i64 [ %r, %loop.latch ]\n ret i64 %r.lcssa\n}\n;.\n;.", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Assertion `verifyVPlanIsValid(*Plan) && \"VPlan is invalid\"' failed", "body": "The following test fails when run opt with -passes loop-vectorize\r\n```\r\n; ModuleID = './reduced.ll'\r\nsource_filename = \"./reduced.ll\"\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine void @wombat() gc \"statepoint-example\" {\r\nbb:\r\n br label %bb1\r\n\r\nbb1: ; preds = %bb2, %bb\r\n %phi = phi i32 [ %add, %bb2 ], [ 0, %bb ]\r\n br i1 false, label %bb2, label %bb4\r\n\r\nbb2: ; preds = %bb4, %bb1\r\n %phi3 = phi i64 [ 1, %bb4 ], [ 0, %bb1 ]\r\n %add = add i32 %phi, 1\r\n %icmp = icmp sgt i32 %phi, 0\r\n br i1 %icmp, label %bb5, label %bb1\r\n\r\nbb4: ; preds = %bb1\r\n br label %bb2\r\n\r\nbb5: ; preds = %bb2\r\n %phi6 = phi i64 [ %phi3, %bb2 ]\r\n ret void\r\n}\r\n```\r\nReproducer https://godbolt.org/z/9YW1o7qo6\r\nStack dump:\r\n```\r\nFound non-header PHI recipe in header VPBB: BLEND ir<%phi3> = ir<1> ir<0>/ir<false>\r\nopt: /root/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:8555: void llvm::LoopVectorizationPlanner::buildVPlansWithVPRecipes(llvm::ElementCount, llvm::ElementCount): Assertion `verifyVPlanIsValid(*Plan) && \"VPlan is invalid\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes loop-vectorize <source>\r\n #0 0x0000000004d05ee8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4d05ee8)\r\n #1 0x0000000004d0363c SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007f7623242520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x00007f76232969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x00007f7623242476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x00007f76232287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x00007f762322871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\r\n #7 0x00007f7623239e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n #8 0x0000000003de70b8 llvm::LoopVectorizationPlanner::buildVPlansWithVPRecipes(llvm::ElementCount, llvm::ElementCount) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3de70b8)\r\n #9 0x0000000003dee731 llvm::LoopVectorizationPlanner::plan(llvm::ElementCount, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3dee731)\r\n#10 0x0000000003df18fe llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3df18fe)\r\n#11 0x0000000003df4c6d llvm::LoopVectorizePass::runImpl(llvm::Function&, llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo*, llvm::TargetLibraryInfo*, llvm::DemandedBits&, llvm::AssumptionCache&, llvm::LoopAccessInfoManager&, llvm::OptimizationRemarkEmitter&, llvm::ProfileSummaryInfo*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3df4c6d)\r\n#12 0x0000000003df5e7b llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3df5e7b)\r\n#13 0x0000000002d67f0e llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2d67f0e)\r\n#14 0x0000000000db3554 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xdb3554)\r\n#15 0x0000000004b1663e llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4b1663e)\r\n#16 0x0000000000d97cce llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xd97cce)\r\n#17 0x0000000004b1454c llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4b1454c)\r\n#18 0x00000000008c74f2 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8c74f2)\r\n#19 0x00000000008bad45 optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8bad45)\r\n#20 0x00007f7623229d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#21 0x00007f7623229e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#22 0x00000000008b1aee _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8b1aee)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139\r\n```", "author": "TatyanaDoubts", "labels": [ "vectorizers", "crash" ], "comments": [] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "fac46469977da9c4e9c6eeaac21103c971190577", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": [ [ 747, 752 ], [ 764, 770 ], [ 804, 810 ] ], "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": [ "InstCombinerImpl::foldGEPICmp" ], "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/icmp-gep.ll", "commands": [ "opt -passes=instcombine -S < %s" ], "tests": [ { "test_name": "pointer_icmp_aligned_with_offset_negative", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @pointer_icmp_aligned_with_offset_negative(ptr align 8 %a, ptr align 8 %a2) {\n %gep = getelementptr i8, ptr %a, i64 8\n %cmp = icmp eq ptr %gep, %a2\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "gep_diff_base_same_indices_nuw_nusw", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @gep_diff_base_same_indices_nuw_nusw(ptr %x, ptr %y, i64 %z) {\n %gep1 = getelementptr nuw i8, ptr %x, i64 %z\n %gep2 = getelementptr nusw i8, ptr %y, i64 %z\n %cmp = icmp ult ptr %gep1, %gep2\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "gep_diff_base_same_indices", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @gep_diff_base_same_indices(ptr %x, ptr %y, i64 %z) {\n %gep1 = getelementptr i8, ptr %x, i64 %z\n %gep2 = getelementptr i8, ptr %y, i64 %z\n %cmp = icmp ult ptr %gep1, %gep2\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "gep_diff_base_same_indices_nusw", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @gep_diff_base_same_indices_nusw(ptr %x, ptr %y, i64 %z) {\n %gep1 = getelementptr nusw i8, ptr %x, i64 %z\n %gep2 = getelementptr nusw i8, ptr %y, i64 %z\n %cmp = icmp ult ptr %gep1, %gep2\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "gep_diff_base_same_indices_nuw", "test_body": "target datalayout = \"e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\n\ndefine i1 @gep_diff_base_same_indices_nuw(ptr %x, ptr %y, i64 %z) {\n %gep1 = getelementptr nuw i8, ptr %x, i64 %z\n %gep2 = getelementptr nuw i8, ptr %y, i64 %z\n %cmp = icmp ult ptr %gep1, %gep2\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] Incorrect fold of the comparison of GEPs", "body": "Alive2: https://alive2.llvm.org/ce/z/HRsqeW\n```\ndefine i1 @test(ptr %x, ptr %y) {\n %gep1 = getelementptr i8, ptr %x, i32 1\n %gep2 = getelementptr i8, ptr %y, i32 1\n %cmp = icmp ult ptr %gep1, %gep2\n ret i1 %cmp\n}\n```\n```\n\n----------------------------------------\ndefine i1 @test(ptr %x, ptr %y) {\n#0:\n %gep1 = gep ptr %x, 1 x i32 1\n %gep2 = gep ptr %y, 1 x i32 1\n %cmp = icmp ult ptr %gep1, %gep2\n ret i1 %cmp\n}\n=>\ndefine i1 @test(ptr %x, ptr %y) {\n#0:\n %cmp = icmp ult ptr %x, %y\n ret i1 %cmp\n}\nTransformation doesn't verify!\n\nERROR: Value mismatch\n\nExample:\nptr %x = pointer(non-local, block_id=0, offset=-1) / Address=#xf\nptr %y = null\n\nSource:\nptr %gep1 = null\nptr %gep2 = pointer(non-local, block_id=0, offset=1) / Address=#x1\ni1 %cmp = #x1 (1)\n\nSOURCE MEMORY STATE\n===================\nNON-LOCAL BLOCKS:\nBlock 0 >\tsize: 0\talign: 1\talloc type: 0\talive: false\taddress: 0\nBlock 1 >\tsize: 1\talign: 2\talloc type: 0\talive: true\taddress: 2\nBlock 2 >\tsize: 0\talign: 1\talloc type: 0\talive: true\taddress: 3\n\nTarget:\ni1 %cmp = #x0 (0)\nSource value: #x1 (1)\nTarget value: #x0 (0)\n\nSummary:\n 0 correct transformations\n 1 incorrect transformations\n 0 failed-to-prove transformations\n 0 Alive2 errors\n```", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "d3dad7a74be50d90754bf5c072e1a2330e92712c", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": [ [ 1510, 1515 ] ], "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": [ "InstCombinerImpl::foldICmpTruncWithTruncOrExt" ], "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/icmp-of-trunc-ext.ll", "commands": [ "opt -S -passes=instcombine < %s" ], "tests": [ { "test_name": "trunc_equality_both_sext", "test_body": "define i1 @trunc_equality_both_sext(i32 %x, i8 %y) {\n %xt = trunc nuw nsw i32 %x to i16\n %ye = sext i8 %y to i16\n %c = icmp ne i16 %xt, %ye\n ret i1 %c\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_slt_nuw", "test_body": "define i1 @test_slt_nuw(i32 %x, i16 %y) {\n %conv1 = trunc nuw nsw i32 %x to i8\n %conv2 = trunc nuw nsw i16 %y to i8\n %cond = icmp slt i8 %conv1, %conv2\n ret i1 %cond\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_slt", "test_body": "define i1 @test_slt(i32 %x, i16 %y) {\n %conv1 = trunc nsw i32 %x to i8\n %conv2 = trunc nsw i16 %y to i8\n %cond = icmp slt i8 %conv1, %conv2\n ret i1 %cond\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_ult_nuw", "test_body": "define i1 @test_ult_nuw(i32 %x, i16 %y) {\n %conv1 = trunc nuw nsw i32 %x to i8\n %conv2 = trunc nuw nsw i16 %y to i8\n %cond = icmp ult i8 %conv1, %conv2\n ret i1 %cond\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_ult", "test_body": "define i1 @test_ult(i32 %x, i16 %y) {\n %conv1 = trunc nsw i32 %x to i8\n %conv2 = trunc nsw i16 %y to i8\n %cond = icmp ult i8 %conv1, %conv2\n ret i1 %cond\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_eq1", "test_body": "define i1 @test_eq1(i32 %x, i16 %y) {\n %conv1 = trunc nsw i32 %x to i8\n %conv2 = trunc nsw i16 %y to i8\n %cond = icmp eq i8 %conv1, %conv2\n ret i1 %cond\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_eq2", "test_body": "define i1 @test_eq2(i32 %x, i16 %y) {\n %conv1 = trunc nsw i32 %x to i8\n %conv2 = trunc nsw i16 %y to i8\n %cond = icmp eq i8 %conv2, %conv1\n ret i1 %cond\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] Miscompilation which converts `icmp eq (trunc nsw i64 X), (trunc nsw i32 Y)` into `icmp eq (zext i32 Y), X`", "body": "Reduced test case: https://alive2.llvm.org/ce/z/MLgA5x\r\n```\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine i32 @src() {\r\nentry:\r\n br label %for.cond\r\n\r\nfor.cond: ; preds = %if.end, %entry\r\n %storemerge = phi i32 [ 3, %entry ], [ %dec, %if.end ]\r\n %h = phi i32 [ 1, %entry ], [ %hres, %if.end ]\r\n %e = phi i32 [ 0, %entry ], [ -1, %if.end ]\r\n %tobool.not = icmp eq i32 %storemerge, 0\r\n br i1 %tobool.not, label %for.end9, label %for.body\r\n\r\nfor.body: ; preds = %for.cond\r\n %cmp = icmp eq i32 %h, 5\r\n %conv1 = zext i1 %cmp to i64\r\n %conv2 = sext i32 %e to i64\r\n %cond.i = call i64 @llvm.umax.i64(i64 %conv1, i64 %conv2)\r\n %conv3 = trunc nsw i64 %cond.i to i16\r\n %conv4 = trunc nsw i32 %e to i16\r\n %sub.i = sub i16 %conv3, %conv4\r\n %tobool6.not = icmp eq i16 %sub.i, 0\r\n br i1 %tobool6.not, label %if.end, label %if.then\r\n\r\nif.then: ; preds = %for.body\r\n br label %if.end\r\n\r\nif.end: ; preds = %if.then, %for.body\r\n %hres = phi i32 [ 0, %if.then ], [ %h, %for.body ]\r\n %dec = add nsw i32 %storemerge, -1\r\n br label %for.cond\r\n\r\nfor.end9: ; preds = %for.cond\r\n ret i32 %h\r\n}\r\n\r\ndefine i32 @tgt() {\r\nentry:\r\n br label %for.cond\r\n\r\nfor.cond: ; preds = %if.end, %entry\r\n %storemerge = phi i32 [ 3, %entry ], [ %dec, %if.end ]\r\n %h = phi i32 [ 1, %entry ], [ %hres, %if.end ]\r\n %e = phi i32 [ 0, %entry ], [ -1, %if.end ]\r\n %tobool.not = icmp eq i32 %storemerge, 0\r\n br i1 %tobool.not, label %for.end9, label %for.body\r\n\r\nfor.body: ; preds = %for.cond\r\n %cmp = icmp eq i32 %h, 5\r\n %conv1 = zext i1 %cmp to i64\r\n %conv2 = sext i32 %e to i64\r\n %cond.i = call i64 @llvm.umax.i64(i64 %conv1, i64 %conv2)\r\n %0 = zext i32 %e to i64\r\n %tobool6.not = icmp eq i64 %cond.i, %0\r\n br i1 %tobool6.not, label %if.end, label %if.then\r\n\r\nif.then: ; preds = %for.body\r\n br label %if.end\r\n\r\nif.end: ; preds = %if.then, %for.body\r\n %hres = phi i32 [ 0, %if.then ], [ %h, %for.body ]\r\n %dec = add nsw i32 %storemerge, -1\r\n br label %for.cond\r\n\r\nfor.end9: ; preds = %for.cond\r\n ret i32 %h\r\n}\r\n```\r\n\r\nllvm version: de9b386f84b58ad0ffc12e221bc6d9161ca5b62d", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [ { "author": "dtcxzyw", "body": "Reduced test case: https://alive2.llvm.org/ce/z/ndR8PQ\r\n```\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine i1 @src(i64 %x, i32 %y) {\r\n %conv1 = trunc nsw i64 %x to i16\r\n %conv2 = trunc nsw i32 %y to i16\r\n %cond = icmp eq i16 %conv1, %conv2\r\n ret i1 %cond\r\n}\r\n\r\ndefine i1 @tgt(i64 %x, i32 %y) {\r\n %1 = zext i32 %y to i64\r\n %cond = icmp eq i64 %1, %x\r\n ret i1 %cond\r\n}\r\n```\r\n\r\nIt should be caused by https://github.com/llvm/llvm-project/pull/90436.\r\n\r\nI will post a fix later. cc @nikic\r\n" }, { "author": "dtcxzyw", "body": "POC without DataLayout:\r\n```\r\ndefine i1 @test_eq(i32 %x, i16 %y) {\r\n %conv1 = trunc nsw i32 %x to i8\r\n %conv2 = trunc nsw i16 %y to i8\r\n %cond = icmp eq i8 %conv1, %conv2\r\n ret i1 %cond\r\n}\r\n\r\ndefine i1 @test_ult(i32 %x, i16 %y) {\r\n %conv1 = trunc nsw i32 %x to i8\r\n %conv2 = trunc nsw i16 %y to i8\r\n %cond = icmp ult i8 %conv1, %conv2\r\n ret i1 %cond\r\n}\r\n\r\ndefine i1 @test_slt(i32 %x, i16 %y) {\r\n %conv1 = trunc nsw i32 %x to i8\r\n %conv2 = trunc nsw i16 %y to i8\r\n %cond = icmp slt i8 %conv1, %conv2\r\n ret i1 %cond\r\n}\r\n```" } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "66eedd1dd370d22ddf994540c20848618d64d1a6", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": [ [ 1704, 1714 ] ], "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": [ "InstCombinerImpl::foldSelectInstWithICmp" ], "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/select.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "src_select_xxory_eq0_xorxy_y", "test_body": "target datalayout = \"e-p:64:64-p1:16:16-p2:32:32:32-p3:64:64:64\"\n\ndefine i32 @src_select_xxory_eq0_xorxy_y(i32 %x, i32 %y) {\n %xor = xor i32 %x, %y\n %xor0 = icmp eq i32 %xor, 0\n %cond = select i1 %xor0, i32 %xor, i32 %y\n ret i32 %cond\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "LLVM ERROR while InstCombine", "body": "```\r\n$ bllvm0/bin/clang --version\r\nclang version 18.0.0git ([email protected]:ParkHanbum/llvm-project.git a9f39ff2b628e38826d5b95c1e8ae3cb7c692de9)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /home/m/bllvm0/bin\r\n```\r\nmy clang version.\r\n\r\nIR that caused the error\r\n```\r\ndefine i32 @no_trans_select_xor_eq0_xor_and(i32 %x, i32 %y) {\r\n; CHECK-LABEL: @no_trans_select_xor_eq0_xor_and(\r\n; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]]\r\n; CHECK-NEXT: [[XOR0:%.*]] = icmp eq i32 [[XOR]], 0\r\n; CHECK-NEXT: [[AND:%.*]] = and i32 [[X]], [[Y]]\r\n; CHECK-NEXT: [[COND:%.*]] = select i1 [[XOR0]], i32 [[XOR]], i32 [[AND]]\r\n; CHECK-NEXT: ret i32 [[COND]]\r\n;\r\n %xor = xor i32 %x, %y\r\n %xor0 = icmp eq i32 %xor, 0\r\n %and = and i32 %x, %y\r\n %cond = select i1 %xor0, i32 %xor, i32 %and\r\n ret i32 %cond\r\n}\r\n```\r\n\r\nand Debug message :\r\n```\r\n$ bllvm0/bin/opt -passes=instcombine temp.ll -debug\r\nINSTCOMBINE ITERATION #1 on no_trans_select_xor_eq0_xor_and\r\nADD: ret i32 %cond\r\nADD: %cond = select i1 %xor0, i32 %xor, i32 %and\r\nADD: %and = and i32 %x, %y\r\nADD: %xor0 = icmp eq i32 %xor, 0\r\nADD: %xor = xor i32 %x, %y\r\nIC: Visiting: %xor = xor i32 %x, %y\r\nIC: Visiting: %xor0 = icmp eq i32 %xor, 0\r\nIC: Visiting: %and = and i32 %x, %y\r\nIC: Visiting: %cond = select i1 %xor0, i32 %xor, i32 %and\r\nIC: Mod = %cond = select i1 %xor0, i32 %xor, i32 %and\r\n New = %cond = select i1 %xor0, i32 0, i32 %and\r\nADD: %cond = select i1 %xor0, i32 0, i32 %and\r\nIC: Visiting: %cond = select i1 %xor0, i32 0, i32 %and\r\nIC: Visiting: ret i32 %cond\r\n\r\n\r\nINSTCOMBINE ITERATION #2 on no_trans_select_xor_eq0_xor_and\r\nADD: ret i32 %cond\r\nADD: %cond = select i1 %xor0, i32 0, i32 %and\r\nADD: %and = and i32 %x, %y\r\nADD: %xor0 = icmp eq i32 %xor, 0\r\nADD: %xor = xor i32 %x, %y\r\nIC: Visiting: %xor = xor i32 %x, %y\r\nIC: Visiting: %xor0 = icmp eq i32 %xor, 0\r\nIC: Old = %xor0 = icmp eq i32 %xor, 0\r\n New = <badref> = icmp eq i32 %x, %y\r\nADD: %xor0 = icmp eq i32 %x, %y\r\nIC: ERASE %1 = icmp eq i32 %xor, 0\r\nADD DEFERRED: %xor = xor i32 %x, %y\r\nIC: ERASE %xor = xor i32 %x, %y\r\nIC: Visiting: %xor0 = icmp eq i32 %x, %y\r\nIC: Visiting: %and = and i32 %x, %y\r\nIC: Visiting: %cond = select i1 %xor0, i32 0, i32 %and\r\nIC: Visiting: ret i32 %cond\r\nLLVM ERROR: Instruction Combining did not reach a fixpoint after 1 iterations\r\n\r\n```\r\n\r\nIf time isn't tight, I'd like to take on this issue.\r\n\r\n", "author": "ParkHanbum", "labels": [ "llvm:instcombine", "crash-on-valid" ], "comments": [ { "author": "nikic", "body": "The problem is likely that https://github.com/llvm/llvm-project/blob/084f1c2ee074a5ac8186ea4b5b181b48bf4621b6/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp#L1704-L1714 calls setOperand() instead of replaceOperand()." }, { "author": "ParkHanbum", "body": "@nikic can I try this?" }, { "author": "nikic", "body": "Sure." } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "27bf45aa36386136db179c494358670a994a98a5", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": [ [ 2904, 2910 ] ], "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, 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"llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, 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"llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": [ "InstCombinerImpl::visitShuffleVectorInst" ], "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/vec_shuffle.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "shuf_cmp_may_be_poison", "test_body": "define <4 x i8> @shuf_cmp_may_be_poison(<4 x i8> %x, <4 x i8> %y, i1 %cmp) {\n %sel = select i1 %cmp, <4 x i8> %y, <4 x i8> <i8 0, i8 poison, i8 0, i8 poison>\n %shuf = shufflevector <4 x i8> %sel, <4 x i8> <i8 poison, i8 1, i8 poison, i8 3>, <4 x i32> <i32 0, i32 5, i32 2, i32 7>\n ret <4 x i8> %shuf\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "shuf_same_length_vec_select", "test_body": "define <4 x i32> @shuf_same_length_vec_select(<4 x i1> %cond) {\n %sel = select <4 x i1> %cond, <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32> <i32 4, i32 5, i32 6, i32 7>\n %shuf = shufflevector <4 x i32> %sel, <4 x i32> <i32 8, i32 9, i32 10, i32 11>, <4 x i32> <i32 2, i32 1, i32 3, i32 5>\n ret <4 x i32> %shuf\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] folded select produces different result on a blended vector", "body": "Alive2 report: https://alive2.llvm.org/ce/z/73v-ug\r\n\r\n```llvm\r\n----------------------------------------\r\ndefine <4 x i8> @sel_shuf_commute3.2(<4 x i8> %x, <4 x i8> %y, i1 %cmp) {\r\n#0:\r\n %blend = shufflevector <4 x i8> { 0, 0, 0, 0 }, <4 x i8> %y, 0, 5, 2, 3\r\n %r = select i1 %cmp, <4 x i8> %y, <4 x i8> %blend\r\n %#1 = select <4 x i1> { 0, 1, 0, 1 }, <4 x i8> { 0, 1, 2, 3 }, <4 x i8> %r\r\n ret <4 x i8> %#1\r\n}\r\n=>\r\ndefine <4 x i8> @sel_shuf_commute3.2(<4 x i8> %x, <4 x i8> %y, i1 %cmp) {\r\n#0:\r\n %#1 = shufflevector <4 x i8> %y, <4 x i8> { poison, 1, poison, 3 }, 0, 5, 2, 7\r\n %#2 = select i1 %cmp, <4 x i8> %#1, <4 x i8> { 0, 1, 0, 3 }\r\n ret <4 x i8> %#2\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Target is more poisonous than source\r\n\r\nExample:\r\n<4 x i8> %x = < poison, poison, poison, poison >\r\n<4 x i8> %y = < poison, poison, poison, poison >\r\ni1 %cmp = poison\r\n\r\nSource:\r\n<4 x i8> %blend = < #x00 (0), poison, #x00 (0), #x00 (0) >\r\n<4 x i8> %r = < poison, poison, poison, poison >\r\n<4 x i8> %#1 = < poison, #x01 (1), poison, #x03 (3) >\r\n\r\nTarget:\r\n<4 x i8> %#1 = < poison, #x01 (1), poison, #x03 (3) >\r\n<4 x i8> %#2 = < poison, poison, poison, poison >\r\nSource value: < poison, #x01 (1), poison, #x03 (3) >\r\nTarget value: < poison, poison, poison, poison >\r\n\r\nSummary:\r\n 0 correct transformations\r\n 1 incorrect transformations\r\n 0 failed-to-prove transformations\r\n 0 Alive2 errors\r\n```\r\n", "author": "bongjunj", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "c83698367125703827f1b739393f006c399cb213", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": [ [ 1513, 1518 ] ], "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 8233, 8238 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, 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"llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/unused-blend-mask-for-first-operand.ll", "commands": [ "opt -p loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S %s" ], "tests": [ { "test_name": "test_not_first_lane_only_constant", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\n\ndefine void @test_not_first_lane_only_constant(ptr %A, ptr noalias %B) {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i16 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %gep.A = getelementptr inbounds i16, ptr %A, i16 %iv\n br i1 false, label %loop.latch, label %else.1\n\nelse.1: ; preds = %loop.header\n br i1 false, label %then.2, label %else.2\n\nthen.2: ; preds = %else.1\n br label %else.2\n\nelse.2: ; preds = %then.2, %else.1\n br label %loop.latch\n\nloop.latch: ; preds = %else.2, %loop.header\n %merge = phi ptr [ %B, %else.2 ], [ poison, %loop.header ]\n %l = load i16, ptr %merge, align 2\n %iv.next = add i16 %iv, 1\n store i16 %l, ptr %gep.A, align 2\n %c.2 = icmp eq i16 %iv.next, 1000\n br i1 %c.2, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "test_not_first_lane_only_wide_compare", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\n\ndefine void @test_not_first_lane_only_wide_compare(ptr %A, ptr noalias %B, i16 %x, i16 %y) {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i16 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %gep.A = getelementptr inbounds i16, ptr %A, i16 %iv\n %l.0 = load i16, ptr %gep.A, align 2\n %c.0 = icmp ult i16 %l.0, %x\n br i1 %c.0, label %loop.latch, label %else.1\n\nelse.1: ; preds = %loop.header\n %c.1 = icmp ult i16 %l.0, %y\n br i1 %c.1, label %then.2, label %else.2\n\nthen.2: ; preds = %else.1\n br label %else.2\n\nelse.2: ; preds = %then.2, %else.1\n br label %loop.latch\n\nloop.latch: ; preds = %else.2, %loop.header\n %merge = phi ptr [ %B, %else.2 ], [ poison, %loop.header ]\n %l = load i16, ptr %merge, align 2\n %iv.next = add i16 %iv, 1\n store i16 %l, ptr %gep.A, align 2\n %c.2 = icmp eq i16 %iv.next, 1000\n br i1 %c.2, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[LoopVectorize][VPlan] Assertion \"Trying to access a single scalar per part but has multiple scalars per part.\" failed.", "body": "Reduced LLVM IR\r\n```llvm ir\r\ntarget datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\r\ntarget triple = \"riscv64-unknown-linux-gnu\"\r\n\r\ndefine i32 @main() #0 {\r\nentry:\r\n br label %for.body.i\r\n\r\nfor.body.i: ; preds = %if.end.i, %entry\r\n %q.0139.i = phi i16 [ 0, %entry ], [ %add.i, %if.end.i ]\r\n %idxprom.i = sext i16 0 to i64\r\n br i1 false, label %if.end.i, label %if.then.i\r\n\r\nif.then.i: ; preds = %for.body.i\r\n br i1 false, label %cond.end41.i, label %cond.end41.i\r\n\r\ncond.end41.i: ; preds = %if.then.i, %if.then.i\r\n br label %if.end.i\r\n\r\nif.end.i: ; preds = %cond.end41.i, %for.body.i\r\n %.in.i = phi ptr [ null, %cond.end41.i ], [ poison, %for.body.i ]\r\n %0 = load i16, ptr %.in.i, align 2\r\n %add.i = add i16 %q.0139.i, 1\r\n %tobool.not.i = icmp eq i16 %add.i, 0\r\n br i1 %tobool.not.i, label %m.exit, label %for.body.i\r\n\r\nm.exit: ; preds = %if.end.i\r\n %.lcssa = phi i16 [ %0, %if.end.i ]\r\n ret i32 0\r\n}\r\n\r\nattributes #0 = { \"target-features\"=\"+64bit,+v\" }\r\n```\r\n\r\nBacktrace:\r\n```\r\nopt: /scratch/tc-testing/tc-apr-2/llvm/llvm/lib/Transforms/Vectorize/VPlan.cpp:249: llvm::Value* llvm::VPTransformState::get(llvm::VPValue*, unsigned int, bool): Assertion `(VF.isScalar() || Def->isLiveIn() || (hasScalarValue(Def, VPIteration(Part, 0)) && Data.PerPartScalars[Def][Part].size() == 1)) && \"Trying to access a single scalar per part but has multiple scalars \" \"per part.\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0. Program arguments: /scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt --passes=loop-vectorize reduced.ll\r\n #0 0x00005ed60f56eb60 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2d84b60)\r\n #1 0x00005ed60f56bf6f llvm::sys::RunSignalHandlers() (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2d81f6f)\r\n #2 0x00005ed60f56c0c5 SignalHandler(int) Signals.cpp:0:0\r\n #3 0x00007f973de42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #4 0x00007f973de969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76\r\n #5 0x00007f973de969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10\r\n #6 0x00007f973de969fc pthread_kill ./nptl/pthread_kill.c:89:10\r\n #7 0x00007f973de42476 gsignal ./signal/../sysdeps/posix/raise.c:27:6\r\n #8 0x00007f973de287f3 abort ./stdlib/abort.c:81:7\r\n #9 0x00007f973de2871b _nl_load_domain ./intl/loadmsgcat.c:1177:9\r\n#10 0x00007f973de39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n#11 0x00005ed60e6cbb72 llvm::VPTransformState::get(llvm::VPValue*, unsigned int, bool) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1ee1b72)\r\n#12 0x00005ed60e6fa9a6 llvm::VPInstruction::generatePerPart(llvm::VPTransformState&, unsigned int) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1f109a6)\r\n#13 0x00005ed60e6fbbdf llvm::VPInstruction::execute(llvm::VPTransformState&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1f11bdf)\r\n#14 0x00005ed60e6d74ff llvm::VPBasicBlock::execute(llvm::VPTransformState*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1eed4ff)\r\n#15 0x00005ed60e6cd9e0 llvm::VPRegionBlock::execute(llvm::VPTransformState*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1ee39e0)\r\n#16 0x00005ed60e6d90e6 llvm::VPlan::execute(llvm::VPTransformState*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1eef0e6)\r\n#17 0x00005ed60e5d76f3 llvm::LoopVectorizationPlanner::executePlan(llvm::ElementCount, unsigned int, llvm::VPlan&, llvm::InnerLoopVectorizer&, llvm::DominatorTree*, bool, llvm::DenseMap<llvm::SCEV const*, llvm::Value*, llvm::DenseMapInfo<llvm::SCEV const*, void>, llvm::detail::DenseMapPair<llvm::SCEV const*, llvm::Value*>> const*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1ded6f3)\r\n#18 0x00005ed60e5e9718 llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1dff718)\r\n#19 0x00005ed60e5eb73e llvm::LoopVectorizePass::runImpl(llvm::Function&, llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo*, llvm::TargetLibraryInfo*, llvm::DemandedBits&, llvm::AssumptionCache&, llvm::LoopAccessInfoManager&, llvm::OptimizationRemarkEmitter&, llvm::ProfileSummaryInfo*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1e0173e)\r\n#20 0x00005ed60e5ec88d llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1e0288d)\r\n#21 0x00005ed60d4f3276 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0xd09276)\r\n#22 0x00005ed60f395141 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2bab141)\r\n#23 0x00005ed60d4eabd6 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0xd00bd6)\r\n#24 0x00005ed60f393e3b llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2ba9e3b)\r\n#25 0x00005ed60d4f2dc6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0xd08dc6)\r\n#26 0x00005ed60f391cb1 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2ba7cb1)\r\n#27 0x00005ed60cd6cce5 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x582ce5)\r\n#28 0x00005ed60cd5f316 optMain (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x575316)\r\n#29 0x00007f973de29d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16\r\n#30 0x00007f973de29e40 call_init ./csu/../csu/libc-start.c:128:20\r\n#31 0x00007f973de29e40 __libc_start_main ./csu/../csu/libc-start.c:379:5\r\n#32 0x00005ed60cd54f95 _start (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x56af95)\r\nzsh: IOT instruction (core dumped) /scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt\r\n```\r\nGodbolt: https://godbolt.org/z/jYWea8z4q\r\n\r\nFound via fuzzer.", "author": "patrick-rivos", "labels": [ "vectorizers", "crash" ], "comments": [] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "b8741cc185e89a95c9161218084f7c8b5578cf96", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": [ [ 254, 259 ] ], "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": [ "VPTransformState::get" ], "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/SystemZ/scalar-steps-with-users-demanding-all-lanes-and-first-lane-only.ll", "commands": [ "opt -p loop-vectorize -mtriple=s390x-unknown-linux -mcpu=z16 -S %s" ], "tests": [ { "test_name": "test_scalar_iv_steps_used_by_replicate_and_first_lane_only_vpinst", "test_body": "target datalayout = \"E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64\"\n\n@src = external global [8 x i32], align 4\n\ndefine void @test_scalar_iv_steps_used_by_replicate_and_first_lane_only_vpinst(ptr noalias %dst, ptr noalias %src.1) {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %mul.iv = mul nsw i64 %iv, 4\n %gep.src.1 = getelementptr inbounds i8, ptr %src.1, i64 %mul.iv\n %l.1 = load i8, ptr %gep.src.1, align 1\n %c = icmp eq i8 %l.1, 0\n br i1 %c, label %then, label %loop.latch\n\nthen: ; preds = %loop.header\n %iv.or = or disjoint i64 %iv, 4\n %gep.src = getelementptr inbounds [8 x i32], ptr @src, i64 0, i64 %iv.or\n %l.2 = load i32, ptr %gep.src, align 4\n store i32 %l.2, ptr %dst, align 4\n br label %loop.latch\n\nloop.latch: ; preds = %then, %loop.header\n %iv.next = add nuw nsw i64 %iv, 1\n %ec = icmp eq i64 %iv.next, 4\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "LoopVectorizer asserts: Assertion `(VF.isScalar() || Def->isLiveIn() || (hasScalarValue(Def, VPIteration(Part, 0)) && Data.PerPartScalars[Def][Part].size() == 1)) && \"Trying to access a single scalar per part but has multiple scalars \" \"per part.", "body": "[tc_crash35_aftercreduce.ll.tar.gz](https://github.com/llvm/llvm-project/files/14988465/tc_crash35_aftercreduce.ll.tar.gz)\r\n\r\nopt -mtriple=s390x-unknown-linux -mcpu=z16 -O3 tc_crash35_aftercreduce.ll -o /dev/null\r\n\r\nVPlan.cpp:253: llvm::Value* llvm::VPTransformState::get(llvm::VPValue*, unsigned int, bool): Assertion `(VF.isScalar() || Def->isLiveIn() || (hasScalarValue(Def, VPIteration(Part, 0)) && Data.PerPartScalars[Def][Part].size() == 1)) && \"Trying to access a single scalar per part but has multiple scalars \" \"per part.\"' failed.\r\n\r\n@fhahn ", "author": "JonPsson1", "labels": [ "vectorizers", "crash" ], "comments": [ { "author": "fhahn", "body": "Should be fixed now, sorry for the delay @JonPsson1 !" } ] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "380beaec8633bad0148aec02f03a85d9a59b2a2d", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 835, 845 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "getSameOpcode" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/AArch64/uselistorder.ll", "commands": [ "opt < %s -passes=slp-vectorizer -S -pass-remarks-missed=slp-vectorizer 2>&1" ], "tests": [ { "test_name": "<module>", "test_body": "\ntarget datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"aarch64-unknown-linux-gnu\"\n\n; This test has UB but the crash in #95016 only happens with it\ndefine void @uselistorder_test() {\n;\n %max1 = call double @llvm.maximum.f64(double 0.000000e+00, double 0.000000e+00) [ \"a_list\"(ptr null) ]\n %add1 = fadd double %max1, 0.000000e+00\n %mul1 = fmul double 0.000000e+00, %add1\n %mul2 = fmul double %mul1, 0.000000e+00\n %sel1 = select i1 false, double 0.000000e+00, double %mul2\n %max2 = call double @llvm.maximum.f64(double 0.000000e+00, double 0.000000e+00)\n %add2 = fadd double %max2, 0.000000e+00\n %mul3 = fmul double 0.000000e+00, %add2\n %mul4 = fmul double %mul3, 0.000000e+00\n %sel2 = select i1 false, double 0.000000e+00, double %mul4\n %mul5 = fmul double %sel2, 0.000000e+00\n %add3 = fadd double 0.000000e+00, %mul5\n %gep1 = getelementptr { double, [1 x [2 x double]] }, ptr null, i64 0, i32 1\n store double %add3, ptr %gep1, align 8\n %mul6 = fmul double %sel1, 0.000000e+00\n %add4 = fadd double %mul6, 0.000000e+00\n store double %add4, ptr null, align 8\n ret void\n}\n\ndeclare double @llvm.maximum.f64(double, double) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "SLPVectorizer (hasOperandBundles() && \"Don't call otherwise!\") assertion trigger with verified module", "body": "SLPVectorize asserts while optimizing the following module\r\n```llvm-ir\r\ntarget datalayout = \"e-m:o-i64:64-i128:128-n32:64-S128-ni:10:11:12:13\"\r\ntarget triple = \"arm64-apple-darwin23.5.0\"\r\n\r\ndefine swiftcc void @julia_multiparameter_a_res_17823() {\r\ntop:\r\n %0 = call double @llvm.maximum.f64(double 0.000000e+00, double 0.000000e+00) [ \"jl_roots\"(ptr null) ]\r\n %1 = fadd double %0, 0.000000e+00\r\n %2 = fmul double 0.000000e+00, %1\r\n %3 = fmul double %2, 0.000000e+00\r\n %4 = select i1 false, double 0.000000e+00, double %3\r\n %5 = call double @llvm.maximum.f64(double 0.000000e+00, double 0.000000e+00)\r\n %6 = fadd double %5, 0.000000e+00\r\n %7 = fmul double 0.000000e+00, %6\r\n %8 = fmul double %7, 0.000000e+00\r\n %9 = select i1 false, double 0.000000e+00, double %8\r\n %10 = fmul double %9, 0.000000e+00\r\n %11 = fadd double 0.000000e+00, %10\r\n %12 = getelementptr { double, [1 x [2 x double]] }, ptr null, i64 0, i32 1\r\n store double %11, ptr %12, align 8\r\n %13 = fmul double %4, 0.000000e+00\r\n %14 = fadd double %13, 0.000000e+00\r\n store double %14, ptr null, align 8\r\n ret void\r\n}\r\n\r\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\r\ndeclare double @llvm.maximum.f64(double, double) #0\r\n\r\n; uselistorder directives\r\nuselistorder ptr @llvm.maximum.f64, { 1, 0 }\r\n\r\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\r\n```\r\n\r\nThis also seems to trigger on godbolt on whatever version of trunk they have there\r\nhttps://godbolt.org/z/favErWG5K\r\n\r\n\r\nstacktrace:\r\n> #0 0x0000000004e258c8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e258c8)\r\n #1 0x0000000004e2301c SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007c7148042520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x00007c71480969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x00007c7148042476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x00007c71480287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x00007c714802871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\r\n #7 0x00007c7148039e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n #8 0x0000000003ee5e8f (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3ee5e8f)\r\n #9 0x0000000003f5e546 getSameOpcode(llvm::ArrayRef<llvm::Value*>, llvm::TargetLibraryInfo const&, unsigned int) (.constprop.1) SLPVectorizer.cpp:0:0\r\n#10 0x0000000003f67928 llvm::slpvectorizer::BoUpSLP::LookAheadHeuristics::getShallowScore(llvm::Value*, llvm::Value*, llvm::Instruction*, llvm::Instruction*, llvm::ArrayRef<llvm::Value*>) const (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f67928)\r\n#11 0x0000000003f67de0 llvm::slpvectorizer::BoUpSLP::LookAheadHeuristics::getScoreAtLevelRec(llvm::Value*, llvm::Value*, llvm::Instruction*, llvm::Instruction*, int, llvm::ArrayRef<llvm::Value*>) const (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f67de0)\r\n#12 0x0000000003f6aaf5 llvm::slpvectorizer::BoUpSLP::VLOperands::getBestOperand(unsigned int, int, int, llvm::ArrayRef<llvm::slpvectorizer::BoUpSLP::VLOperands::ReorderingMode>, llvm::ArrayRef<llvm::Value*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f6aaf5)\r\n#13 0x0000000003f6bfcb llvm::slpvectorizer::BoUpSLP::VLOperands::reorder() (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f6bfcb)\r\n#14 0x0000000003f6c4f6 llvm::slpvectorizer::BoUpSLP::reorderInputsAccordingToOpcode(llvm::ArrayRef<llvm::Value*>, llvm::SmallVectorImpl<llvm::Value*>&, llvm::SmallVectorImpl<llvm::Value*>&, llvm::slpvectorizer::BoUpSLP const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f6c4f6)\r\n#15 0x0000000003f702f4 llvm::slpvectorizer::BoUpSLP::buildTree_rec(llvm::ArrayRef<llvm::Value*>, unsigned int, llvm::slpvectorizer::BoUpSLP::EdgeInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f702f4)\r\n#16 0x0000000003f70392 llvm::slpvectorizer::BoUpSLP::buildTree_rec(llvm::ArrayRef<llvm::Value*>, unsigned int, llvm::slpvectorizer::BoUpSLP::EdgeInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f70392)\r\n#17 0x0000000003f70362 llvm::slpvectorizer::BoUpSLP::buildTree_rec(llvm::ArrayRef<llvm::Value*>, unsigned int, llvm::slpvectorizer::BoUpSLP::EdgeInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f70362)\r\n#18 0x0000000003f7022b llvm::slpvectorizer::BoUpSLP::buildTree_rec(llvm::ArrayRef<llvm::Value*>, unsigned int, llvm::slpvectorizer::BoUpSLP::EdgeInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f7022b)\r\n#19 0x0000000003f70362 llvm::slpvectorizer::BoUpSLP::buildTree_rec(llvm::ArrayRef<llvm::Value*>, unsigned int, llvm::slpvectorizer::BoUpSLP::EdgeInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f70362)\r\n#20 0x0000000003f70362 llvm::slpvectorizer::BoUpSLP::buildTree_rec(llvm::ArrayRef<llvm::Value*>, unsigned int, llvm::slpvectorizer::BoUpSLP::EdgeInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f70362)\r\n#21 0x0000000003f6fe47 llvm::slpvectorizer::BoUpSLP::buildTree_rec(llvm::ArrayRef<llvm::Value*>, unsigned int, llvm::slpvectorizer::BoUpSLP::EdgeInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f6fe47)\r\n#22 0x0000000003f71b59 llvm::slpvectorizer::BoUpSLP::buildTree(llvm::ArrayRef<llvm::Value*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f71b59)\r\n#23 0x0000000003f94622 llvm::SLPVectorizerPass::vectorizeStoreChain(llvm::ArrayRef<llvm::Value*>, llvm::slpvectorizer::BoUpSLP&, unsigned int, unsigned int, unsigned int&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f94622)\r\n#24 0x0000000003f95fb0 llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&)::'lambda'(std::set<std::pair<unsigned int, int>, llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&)::StoreDistCompare, std::allocator<std::pair<unsigned int, int>>> const&)::operator()(std::set<std::pair<unsigned int, int>, llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&)::StoreDistCompare, std::allocator<std::pair<unsigned int, int>>> const&) const SLPVectorizer.cpp:0:0\r\n#25 0x0000000003f97e88 llvm::SLPVectorizerPass::vectorizeStores(llvm::ArrayRef<llvm::StoreInst*>, llvm::slpvectorizer::BoUpSLP&, llvm::DenseSet<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, llvm::DenseMapInfo<std::tuple<llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*, unsigned int>, void>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f97e88)\r\n#26 0x0000000003f985b3 llvm::SLPVectorizerPass::vectorizeStoreChains(llvm::slpvectorizer::BoUpSLP&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f985b3)\r\n#27 0x0000000003f9970f llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0\r\n#28 0x0000000003f9a163 llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x3f9a163)\r\n#29 0x0000000002e1013e llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2e1013e)\r\n#30 0x0000000004c2e64c llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4c2e64c)\r\n#31 0x0000000000db3bce llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xdb3bce)\r\n#32 0x0000000004c2cf8e llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4c2cf8e)\r\n#33 0x0000000000db563e llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xdb563e)\r\n#34 0x0000000004c2ae9c llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4c2ae9c)\r\n#35 0x00000000008d7b32 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8d7b32)\r\n#36 0x00000000008cacdc optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8cacdc)\r\n#37 0x00007c7148029d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#38 0x00007c7148029e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#39 0x00000000008c212e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8c212e)", "author": "gbaraldi", "labels": [ "llvm:SLPVectorizer", "crash" ], "comments": [] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "f9369cc602272796c15de1065a782f812e791df3", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": [ [ 562, 582 ], [ 1086, 1103 ] ], "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": [ "VPlanTransforms::adjustFixedOrderRecurrences", "VPlanTransforms::clearReductionWrapFlags", "collectUsersRecursively", "createScalarIVSteps", "legalizeAndOptimizeInductions" ], "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/iv_outside_user.ll", "commands": [ "opt -S -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=2 < %s", "opt -S -passes=loop-vectorize -force-vector-interleave=2 -force-vector-width=1 < %s" ], "tests": [ { "test_name": "test_iv_uniform_with_outside_use_scev_simplification", "test_body": "define i32 @test_iv_uniform_with_outside_use_scev_simplification(ptr %dst) {\nentry:\n %step.1 = sext i8 0 to i32\n %step.2 = add nsw i32 %step.1, 1\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]\n %gep.dst = getelementptr inbounds i16, ptr %dst, i32 %iv\n store i16 0, ptr %gep.dst, align 2\n %iv.next = add i32 %step.2, %iv\n %cmp.i = icmp slt i32 %iv.next, 8\n br i1 %cmp.i, label %loop, label %e.exit\n\ne.exit: ; preds = %loop\n %res = phi i32 [ %iv.next, %loop ]\n ret i32 %res\n}\n", "additional_args": "-src-unroll=8 -tgt-unroll=8", "lli_expected_out": null } ] } ]

{ "title": "[clang] Miscompilation at -O2/3", "body": "This code prints 8 at `-O0/1` and prints 1 at `-O2/3`:\n\n```c\nint printf(const char *, ...);\nstatic char a;\nstatic char *b = &a;\nstatic int c;\nshort d;\nvoid e() {\n short f[8];\n char **g[] = {&b, &b};\n c = 0;\n for (; c < 8; c = 81 + 462704684 + *b - 462704765 + c + 1)\n f[c] = 0;\n d = f[5];\n}\nint main() {\n e();\n printf(\"%d\\n\", c);\n}\n```\n\nCompiler Explorer: https://godbolt.org/z/MEKz8oncP\n\nBisected to https://github.com/llvm/llvm-project/commit/df4a615c988f3ae56f7e68a7df86acb60f16493a, which was committed by @fhahn ", "author": "cardigan1008", "labels": [ "miscompilation", "vectorizers" ], "comments": [ { "author": "dtcxzyw", "body": "Reduced testcase: https://alive2.llvm.org/ce/z/6Bg63G\n```\n; bin/opt -passes=loop-vectorize test.ll -S\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine i32 @src() {\nentry:\n %f.i = alloca [8 x i16], align 16\n %conv.i = sext i8 0 to i32\n %invariant.op.i = add nsw i32 %conv.i, 1\n br label %for.body.i\n\nfor.body.i: ; preds = %for.body.i, %entry\n %0 = phi i32 [ 0, %entry ], [ %add2.reass.i, %for.body.i ]\n %idxprom.i = sext i32 %0 to i64\n %arrayidx.i = getelementptr [8 x i16], ptr %f.i, i64 0, i64 %idxprom.i\n store i16 0, ptr %arrayidx.i, align 2\n %add2.reass.i = add i32 %invariant.op.i, %0\n %cmp.i = icmp slt i32 %add2.reass.i, 8\n br i1 %cmp.i, label %for.body.i, label %e.exit\n\ne.exit: ; preds = %for.body.i\n %add2.reass.i.lcssa = phi i32 [ %add2.reass.i, %for.body.i ]\n ret i32 %add2.reass.i.lcssa\n}\n```" }, { "author": "fhahn", "body": "Looking into it now, thanks" }, { "author": "yaoxinliu", "body": "Thank God! clang19 works as expected." } ] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "57bbdbd7ae3698a274edd4dd6ef1b53d9129e552", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 1143, 1151 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "addMask" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/non-power-2-num-elems-reused.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu -slp-threshold=-10 < %s" ], "tests": [ { "test_name": "<module>", "test_body": "\ndefine i64 @test() {\n;\nentry:\n %xor148.2.i = xor i32 0, 0\n %conv193.i = zext i32 %xor148.2.i to i64\n %conv193.1.i = zext i32 %xor148.2.i to i64\n %or194.1.i = or i64 %conv193.i, %conv193.1.i\n %xor148.2.i.1 = xor i32 0, 0\n %conv193.i.1 = zext i32 %xor148.2.i.1 to i64\n %or194.i.1 = or i64 %or194.1.i, %conv193.i.1\n %conv193.1.i.1 = zext i32 %xor148.2.i.1 to i64\n %or194.1.i.1 = or i64 %or194.i.1, %conv193.1.i.1\n %xor148.2.i.2 = xor i32 0, 0\n %conv193.i.2 = zext i32 %xor148.2.i.2 to i64\n %or194.i.2 = or i64 %or194.1.i.1, %conv193.i.2\n %conv193.1.i.2 = zext i32 %xor148.2.i.2 to i64\n %or194.1.i.2 = or i64 %or194.i.2, %conv193.1.i.2\n %xor148.2.i.3 = xor i32 0, 0\n %conv193.i.3 = zext i32 %xor148.2.i.3 to i64\n %or194.i.3 = or i64 %or194.1.i.2, %conv193.i.3\n %conv193.1.i.3 = zext i32 %xor148.2.i.3 to i64\n %or194.1.i.3 = or i64 %or194.i.3, %conv193.1.i.3\n %xor148.2.i.4 = xor i32 0, 0\n %conv193.i.4 = zext i32 %xor148.2.i.4 to i64\n %or194.i.4 = or i64 %or194.1.i.3, %conv193.i.4\n %conv193.1.i.4 = zext i32 %xor148.2.i.4 to i64\n %or194.1.i.4 = or i64 %or194.i.4, %conv193.1.i.4\n %xor148.2.i.5 = xor i32 0, 0\n %conv193.i.5 = zext i32 %xor148.2.i.5 to i64\n %or194.i.5 = or i64 %or194.1.i.4, %conv193.i.5\n %conv193.1.i.5 = zext i32 %xor148.2.i.5 to i64\n %or194.1.i.5 = or i64 %or194.i.5, %conv193.1.i.5\n %xor148.2.i.6 = xor i32 0, 0\n %conv193.i.6 = zext i32 %xor148.2.i.6 to i64\n %or194.i.6 = or i64 %or194.1.i.5, %conv193.i.6\n %or54.i.i.6 = or i32 %xor148.2.i.6, 0\n %conv193.1.i.6 = zext i32 %or54.i.i.6 to i64\n %xor148.2.i.7 = xor i32 0, 0\n %conv193.i.7 = zext i32 %xor148.2.i.7 to i64\n %0 = or i64 %or194.i.6, %conv193.i.7\n %conv193.1.i.7 = zext i32 %xor148.2.i.7 to i64\n %1 = or i64 %0, %conv193.1.i.7\n %or194.1.i.7 = or i64 %1, %conv193.1.i.6\n ret i64 %or194.1.i.7\n}", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLPVectorizer] Assertion \"SubMask with many inputs support must be larger than the mask.\" failed.", "body": "Reproducer: https://godbolt.org/z/Mzbe1G875\r\n```\r\n; bin/opt -passes=slp-vectorizer test.ll -S\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine i64 @test() {\r\nentry:\r\n %xor148.2.i = xor i32 0, 0\r\n %conv193.i = zext i32 %xor148.2.i to i64\r\n %conv193.1.i = zext i32 %xor148.2.i to i64\r\n %or194.1.i = or i64 %conv193.i, %conv193.1.i\r\n %xor148.2.i.1 = xor i32 0, 0\r\n %conv193.i.1 = zext i32 %xor148.2.i.1 to i64\r\n %or194.i.1 = or i64 %or194.1.i, %conv193.i.1\r\n %conv193.1.i.1 = zext i32 %xor148.2.i.1 to i64\r\n %or194.1.i.1 = or i64 %or194.i.1, %conv193.1.i.1\r\n %xor148.2.i.2 = xor i32 0, 0\r\n %conv193.i.2 = zext i32 %xor148.2.i.2 to i64\r\n %or194.i.2 = or i64 %or194.1.i.1, %conv193.i.2\r\n %conv193.1.i.2 = zext i32 %xor148.2.i.2 to i64\r\n %or194.1.i.2 = or i64 %or194.i.2, %conv193.1.i.2\r\n %xor148.2.i.3 = xor i32 0, 0\r\n %conv193.i.3 = zext i32 %xor148.2.i.3 to i64\r\n %or194.i.3 = or i64 %or194.1.i.2, %conv193.i.3\r\n %conv193.1.i.3 = zext i32 %xor148.2.i.3 to i64\r\n %or194.1.i.3 = or i64 %or194.i.3, %conv193.1.i.3\r\n %xor148.2.i.4 = xor i32 0, 0\r\n %conv193.i.4 = zext i32 %xor148.2.i.4 to i64\r\n %or194.i.4 = or i64 %or194.1.i.3, %conv193.i.4\r\n %conv193.1.i.4 = zext i32 %xor148.2.i.4 to i64\r\n %or194.1.i.4 = or i64 %or194.i.4, %conv193.1.i.4\r\n %xor148.2.i.5 = xor i32 0, 0\r\n %conv193.i.5 = zext i32 %xor148.2.i.5 to i64\r\n %or194.i.5 = or i64 %or194.1.i.4, %conv193.i.5\r\n %conv193.1.i.5 = zext i32 %xor148.2.i.5 to i64\r\n %or194.1.i.5 = or i64 %or194.i.5, %conv193.1.i.5\r\n %xor148.2.i.6 = xor i32 0, 0\r\n %conv193.i.6 = zext i32 %xor148.2.i.6 to i64\r\n %or194.i.6 = or i64 %or194.1.i.5, %conv193.i.6\r\n %or54.i.i.6 = or i32 %xor148.2.i.6, 0\r\n %conv193.1.i.6 = zext i32 %or54.i.i.6 to i64\r\n %xor148.2.i.7 = xor i32 0, 0\r\n %conv193.i.7 = zext i32 %xor148.2.i.7 to i64\r\n %0 = or i64 %or194.i.6, %conv193.i.7\r\n %conv193.1.i.7 = zext i32 %xor148.2.i.7 to i64\r\n %1 = or i64 %0, %conv193.1.i.7\r\n %or194.1.i.7 = or i64 %1, %conv193.1.i.6\r\n ret i64 %or194.1.i.7\r\n}\r\n```\r\n```\r\nopt: /root/llvm-project/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:1143: void addMask(llvm::SmallVectorImpl<int>&, llvm::ArrayRef<int>, bool): Assertion `(!ExtendingManyInputs || SubMask.size() > Mask.size() || (SubMask.size() == Mask.size() && std::all_of(std::next(Mask.begin(), Mask.size() / 2), Mask.end(), [](int Idx) { return Idx == PoisonMaskElem; }))) && \"SubMask with many inputs support must be larger than the mask.\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=slp-vectorizer <source>\r\n1.\tRunning pass \"function(slp-vectorizer)\" on module \"<source>\"\r\n2.\tRunning pass \"slp-vectorizer\" on function \"test\"\r\n #0 0x00000000051b7378 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x51b7378)\r\n #1 0x00000000051b4d6c SignalHandler(int) Signals.cpp:0:0\r\n #2 0x0000751221842520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x00007512218969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x0000751221842476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x00007512218287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x000075122182871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\r\n #7 0x0000751221839e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n #8 0x00000000041e91f7 llvm::slpvectorizer::BoUpSLP::ShuffleCostEstimator::finalize(llvm::ArrayRef<int>, llvm::ArrayRef<std::pair<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, unsigned int>>, llvm::ArrayRef<int>, unsigned int, llvm::function_ref<void (llvm::Value*&, llvm::SmallVectorImpl<int>&)>) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x41e91f7)\r\n #9 0x00000000042256f9 llvm::InstructionCost llvm::slpvectorizer::BoUpSLP::processBuildVector<llvm::slpvectorizer::BoUpSLP::ShuffleCostEstimator, llvm::InstructionCost, llvm::TargetTransformInfo, llvm::ArrayRef<llvm::Value*>, llvm::slpvectorizer::BoUpSLP, llvm::SmallPtrSetImpl<llvm::Value*>>(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::Type*, llvm::TargetTransformInfo&, llvm::ArrayRef<llvm::Value*>&, llvm::slpvectorizer::BoUpSLP&, llvm::SmallPtrSetImpl<llvm::Value*>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x42256f9)\r\n#10 0x000000000422f707 llvm::slpvectorizer::BoUpSLP::getEntryCost(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::ArrayRef<llvm::Value*>, llvm::SmallPtrSetImpl<llvm::Value*>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x422f707)\r\n#11 0x00000000042636a1 llvm::slpvectorizer::BoUpSLP::getTreeCost(llvm::ArrayRef<llvm::Value*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x42636a1)\r\n#12 0x00000000042691b0 (anonymous namespace)::HorizontalReduction::tryToReduce(llvm::slpvectorizer::BoUpSLP&, llvm::DataLayout const&, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo const&) SLPVectorizer.cpp:0:0\r\n#13 0x000000000426c681 llvm::SLPVectorizerPass::vectorizeHorReduction(llvm::PHINode*, llvm::Instruction*, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&, llvm::SmallVectorImpl<llvm::WeakTrackingVH>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x426c681)\r\n#14 0x0000000004270deb llvm::SLPVectorizerPass::vectorizeRootInstruction(llvm::PHINode*, llvm::Instruction*, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (.constprop.0) SLPVectorizer.cpp:0:0\r\n#15 0x00000000042758a6 llvm::SLPVectorizerPass::vectorizeChainsInBlock(llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x42758a6)\r\n#16 0x000000000427bf86 llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0\r\n#17 0x000000000427ca9b llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x427ca9b)\r\n#18 0x0000000002fcc5ce llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2fcc5ce)\r\n#19 0x0000000004fb6a68 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4fb6a68)\r\n#20 0x0000000000e3dd4e llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe3dd4e)\r\n#21 0x0000000004fb548e llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4fb548e)\r\n#22 0x0000000000e3d3fe llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe3d3fe)\r\n#23 0x0000000004fb4ec0 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4fb4ec0)\r\n#24 0x000000000090ce7a llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x90ce7a)\r\n#25 0x00000000008ff519 optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8ff519)\r\n#26 0x0000751221829d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#27 0x0000751221829e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#28 0x00000000008f6d6e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8f6d6e)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139\r\n```", "author": "dtcxzyw", "labels": [ "llvm:SLPVectorizer", "crash-on-valid" ], "comments": [] }

[ "llvm/test/Transforms/ConstraintElimination" ]

{ "fix_commit": "3d91d9613e294b242d853039209b40a0cb7853f2", "components": [ "ConstraintElimination" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": [ [ 1061, 1071 ] ], "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, 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null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": [ "State::addInfoFor" ], "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, 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[ { "file": "llvm/test/Transforms/ConstraintElimination/minmax.ll", "commands": [ "opt -passes=constraint-elimination -S %s" ], "tests": [ { "test_name": "smin_branchless", "test_body": "define i1 @smin_branchless(i32 %x, i32 %y) {\nentry:\n %min = call i32 @llvm.smin.i32(i32 %x, i32 %y)\n %cmp1 = icmp sle i32 %min, %x\n %cmp2 = icmp sgt i32 %min, %x\n %ret = xor i1 %cmp1, %cmp2\n ret i1 %ret\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.smin.i32(i32, i32) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/ConstraintElimination/umin-result-may-be-poison.ll", "commands": [ "opt -p constraint-elimination -S %s" ], "tests": [ { "test_name": "umin_poison_call_before_UB", "test_body": "define i1 @umin_poison_call_before_UB(i32 %arg) {\n %icmp = icmp slt i32 %arg, 0\n %shl = shl nuw nsw i32 %arg, 3\n %min = call i32 @llvm.umin.i32(i32 %shl, i32 80)\n call void @fn()\n call void @noundef(i32 noundef %min)\n %cmp2 = shl nuw nsw i32 %arg, 3\n ret i1 %icmp\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.umin.i32(i32, i32) #0\n\ndeclare void @noundef(i32 noundef)\n\ndeclare void @fn()\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "umin_not_used", "test_body": "define i1 @umin_not_used(i32 %arg) {\n %icmp = icmp slt i32 %arg, 0\n %shl = shl nuw nsw i32 %arg, 3\n %1 = call i32 @llvm.umin.i32(i32 %shl, i32 80)\n %cmp2 = shl nuw nsw i32 %arg, 3\n ret i1 %icmp\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.umin.i32(i32, i32) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "umin_poison_is_UB_via_call", "test_body": "define i1 @umin_poison_is_UB_via_call(i32 %arg) {\n %icmp = icmp slt i32 %arg, 0\n %shl = shl nuw nsw i32 %arg, 3\n %min = call i32 @llvm.umin.i32(i32 %shl, i32 80)\n call void @noundef(i32 noundef %min)\n %cmp2 = shl nuw nsw i32 %arg, 3\n ret i1 %icmp\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.umin.i32(i32, i32) #0\n\ndeclare void @noundef(i32 noundef)\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[ConstraintElimination] A miscompile in presence of `shl nuw nsw` and `llvm.umin`", "body": "The following commit: https://github.com/llvm/llvm-project/commit/71f56e49ceca75dbf82cbb9537c2545c2d2e51c9\r\nTriggered this miscompile: https://alive2.llvm.org/ce/z/oBg-u8\r\n\r\nNow `opt -passes=constraint-elimination -S` turns\r\n```\r\ndefine i1 @test(i32 %arg) {\r\n %icmp = icmp slt i32 %arg, 0\r\n %shl = shl nuw nsw i32 %arg, 3\r\n %call4 = call i32 @llvm.umin.i32(i32 %shl, i32 80)\r\n ret i1 %icmp\r\n}\r\n\r\ndeclare i32 @llvm.umin.i32(i32, i32) #0\r\n\r\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\r\n```\r\ninto\r\n```\r\ndefine i1 @test(i32 %arg) {\r\n %shl = shl nuw nsw i32 %arg, 3\r\n %call4 = call i32 @llvm.umin.i32(i32 %shl, i32 80)\r\n ret i1 false\r\n}\r\n\r\ndeclare i32 @llvm.umin.i32(i32, i32) #0\r\n\r\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\r\n```\r\n\r\nGiven this debug output:\r\n```\r\nopt -passes=constraint-elimination before-constr-elim-renamed.ll -S -debug-only=constraint-elimination,constraint-system\r\nProcessing fact to add to the system: icmp ule i32 %call4, %shl\r\nAdding 'icmp ule i32 %call4, %shl'\r\n constraint: -8 * %arg + %call4 <= 0\r\n\r\n---\r\n-1 * %arg <= 0\r\n-8 * %arg + %call4 <= 0\r\n-1 * %call4 <= 0\r\n8 * %arg <= -1\r\nunsat\r\nAdding 'icmp sge i32 %call4, 0'\r\n constraint: -1 * %call4 <= 0\r\n\r\nAdding 'icmp sle i32 %call4, %shl'\r\n constraint: -8 * %arg + %call4 <= 0\r\n\r\nProcessing fact to add to the system: icmp ule i32 %call4, 80\r\nAdding 'icmp ule i32 %call4, 80'\r\n constraint: %call4 <= 80\r\n\r\nAdding 'icmp sge i32 %call4, 0'\r\n constraint: -1 * %call4 <= 0\r\n\r\nAdding 'icmp sle i32 %call4, 80'\r\n constraint: %call4 <= 80\r\n\r\nTop of stack : 0 1\r\nCB: 0 1\r\nProcessing condition to simplify: %icmp = icmp slt i32 %arg, 0\r\nChecking %icmp = icmp slt i32 %arg, 0\r\n---\r\n-1 * %call4 <= 0\r\n-8 * %arg + %call4 <= 0\r\n-1 * %call4 <= 0\r\n%call4 <= 80\r\n-1 * %arg <= 0\r\nsat\r\n---\r\n-1 * %call4 <= 0\r\n-8 * %arg + %call4 <= 0\r\n-1 * %call4 <= 0\r\n%call4 <= 80\r\n%arg <= -1\r\nunsat\r\nCondition icmp sge i32 %arg, 0 implied by dominating constraints\r\n-1 * %call4 <= 0\r\n-8 * %arg + %call4 <= 0\r\n-1 * %call4 <= 0\r\n%call4 <= 80\r\n```\r\nI'm not 100% sure if the aforementioned patch causes the miscompile, of if it merely triggers it on this specific reproducer. The fact that something like `-1 * %call4 <= 0` is reported as a \"dominating constraint\" seems suspicious to a person who's not familiar with the logic of ConstraintElimination and it doesn't look directly related to that patch. However, if I replace the `shl nuw nsw i32 %arg, 3\r\n` with `mul nuw nsw i32 %arg, 8`, the miscompile doesn't happen: https://alive2.llvm.org/ce/z/EL2bCh.", "author": "DaniilSuchkov", "labels": [ "miscompilation", "release:backport", "llvm:transforms" ], "comments": [ { "author": "nikic", "body": "From the debug log, I suspect that we're using the unsigned constraint system to prove a signed fact for some reason.\r\n\r\ncc @fhahn " }, { "author": "nikic", "body": "Okay, this is an interesting case.\r\n\r\nWe are adding an `icmp ule i32 %call4, %shl` fact, which get transferred as `icmp sge i32 %call4, 0` and `icmp sle i32 %call4, %shl` to the signed system, because `%shl` is known non-negative.\r\n\r\nThen we are checking whether a solution of these constraints plus `%arg <= -1` exists, which it does not.\r\n\r\nThis is \"correct\" in the sense that *if* that umin call returns a non-poison result, then `icmp slt i32 %arg, 0` is indeed known to be false. But we obviously can't actually make that assumption.\r\n\r\n@dtcxzyw @fhahn This makes me think that the way we are currently adding facts for MinMaxIntrinsic (and I guess abs as well) is pretty fundamentally incorrect, because it effectively imposes a constraint that the umin operation returns a well-defined value. Any thoughts on how to fix this without dropping support for them entirely?" }, { "author": "nikic", "body": "(The difference between shl and mul in the reproducer is because ValueTracking apparently currently doesn't know that mul nuw nsw is non-negative, but knows that shl nuw nsw is.)" }, { "author": "dtcxzyw", "body": "> @dtcxzyw @fhahn This makes me think that the way we are currently adding facts for MinMaxIntrinsic (and I guess abs as well) is pretty fundamentally incorrect, because it effectively imposes a constraint that the umin operation returns a well-defined value. Any thoughts on how to fix this without dropping support for them entirely?\r\n\r\nCan we conservatively check these intrinsics using `isGuaranteedNotToBePoison`?\r\n" }, { "author": "nikic", "body": "If it's not too complicated, I think a better solution would be to only add the intrinsic constraints when the result variable is added to the constraint system." }, { "author": "fhahn", "body": "> If it's not too complicated, I think a better solution would be to only add the intrinsic constraints when the result variable is added to the constraint system.\r\n\r\nOne way to do that would be to check the uses of the intrinsic and find all the branches that it feeds, and add it as fact for the successors." }, { "author": "nikic", "body": "@dtcxzyw Do you plan to submit a PR for this issue?" }, { "author": "dtcxzyw", "body": "> @dtcxzyw Do you plan to submit a PR for this issue?\r\n\r\nI will post a patch later." }, { "author": "fhahn", "body": "I've pushed a fix that only adds the facts if the result is guaranteed to not be poison so the mis-compile is fixed. I also added a TODO to improve things if possible.\r\n\r\nReopening so we can pick the fix for the release branch" }, { "author": "nikic", "body": "@fhahn Why does your fix only do this for min/max but not abs? Can't it have the same problem?" }, { "author": "fhahn", "body": "> @fhahn Why does your fix only do this for min/max but not abs? Can't it have the same problem?\r\n\r\nI wasn't able to come up with a problematic test case so far for `abs`, but there's a few more things to try." }, { "author": "DaniilSuchkov", "body": "@fhahn I'm not familiar with how this pass works, so I have a question: will this pass still use min/max/etc. to infer facts about the arguments of those intrinsics? I'm just a bit confused by the terminology: I see that it adds \"constraints\" based on things like `icmp`, which on their own don't actually constrain anything unless you branch on the result (or do something similar)." }, { "author": "nikic", "body": "> @fhahn I'm not familiar with how this pass works, so I have a question: will this pass still use min/max/etc. to infer facts about the arguments of those intrinsics? I'm just a bit confused by the terminology: I see that it adds \"constraints\" based on things like `icmp`, which on their own don't actually constrain anything unless you branch on the result (or do something similar).\r\n\r\nConstraints for icmps will only be added in branches that the icmp dominates (or code that an assume with an icmp dominates). The intrinsic handling was a bit special in that constraints are added unconditionally." } ] }

[ "llvm/test/Transforms/Inline" ]

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"llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": [ "CallAnalyzer::stripAndComputeInBoundsConstantOffsets" ], "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/Inline/pr97590.ll", "commands": [ "opt -S -passes=inline < %s" ], "tests": [ { "test_name": "<module>", "test_body": "\n; Check that we don't crash when computing the\n; base pointer of `bitcast <1 x ptr> to ptr`\n\ndefine void @caller(<1 x ptr> %x) {\n;\nentry:\n %p = bitcast <1 x ptr> %x to ptr\n call void @callee(ptr %p)\n ret void\n}\n\ndefine void @callee(ptr %p) {\n;\nentry:\n ret void\n}", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[Inline] Assertion `V->getType()->isPointerTy() && \"Unexpected operand type!\"' failed.", "body": "Reproducer: https://godbolt.org/z/qGc1Kx5YK\r\n```\r\n; bin/opt -passes=inline reduced.ll -S\r\ndefine i32 @func_120(i1 %tobool626, ptr %g_231, ptr %l_506, i1 %tobool724, ptr %p) {\r\nentry:\r\n %0 = bitcast i1 %tobool626 to <1 x i1>\r\n call void @llvm.masked.store.v1i64.p0(<1 x i64> zeroinitializer, ptr %g_231, i32 8, <1 x i1> %0)\r\n %1 = xor i1 %tobool626, true\r\n %2 = bitcast i1 %1 to <1 x i1>\r\n %3 = call <1 x ptr> @llvm.masked.load.v1p0.p0(ptr %g_231, i32 8, <1 x i1> %2, <1 x ptr> poison)\r\n %4 = bitcast <1 x ptr> %3 to ptr\r\n br i1 %tobool626, label %common.ret, label %if.else647\r\n\r\ncommon.ret: ; preds = %entry, %lor.end739\r\n ret i32 0\r\n\r\nif.else647: ; preds = %entry\r\n br i1 %tobool724, label %land.rhs725, label %lor.end739\r\n\r\nland.rhs725: ; preds = %if.else647\r\n %call726 = load i32, ptr %p, align 4\r\n br label %lor.end739\r\n\r\nlor.end739: ; preds = %land.rhs725, %if.else647\r\n %call745 = call i32 @func_136(ptr %4)\r\n br label %common.ret\r\n}\r\n\r\ndefine i32 @func_136(ptr nocapture readnone %p_137) {\r\nentry:\r\n ret i32 0\r\n}\r\n\r\n```\r\n```\r\nopt: /root/llvm-project/llvm/lib/Analysis/InlineCost.cpp:2656: llvm::ConstantInt* {anonymous}::CallAnalyzer::stripAndComputeInBoundsConstantOffsets(llvm::Value*&): Assertion `V->getType()->isPointerTy() && \"Unexpected operand type!\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=inline <source>\r\n1.\tRunning pass \"cgscc(inline)\" on module \"<source>\"\r\n #0 0x0000000004e7cf38 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7cf38)\r\n #1 0x0000000004e7a69c SignalHandler(int) Signals.cpp:0:0\r\n #2 0x000077b96f042520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x000077b96f0969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x000077b96f042476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x000077b96f0287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x000077b96f02871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)\r\n #7 0x000077b96f039e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n #8 0x00000000043ea53a (anonymous namespace)::CallAnalyzer::analyze() (.part.0) InlineCost.cpp:0:0\r\n #9 0x00000000043eb650 llvm::getInlineCost(llvm::CallBase&, llvm::Function*, llvm::InlineParams const&, llvm::TargetTransformInfo&, llvm::function_ref<llvm::AssumptionCache& (llvm::Function&)>, llvm::function_ref<llvm::TargetLibraryInfo const& (llvm::Function&)>, llvm::function_ref<llvm::BlockFrequencyInfo& (llvm::Function&)>, llvm::ProfileSummaryInfo*, llvm::OptimizationRemarkEmitter*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x43eb650)\r\n#10 0x00000000043ebba6 llvm::getInlineCost(llvm::CallBase&, llvm::InlineParams const&, llvm::TargetTransformInfo&, llvm::function_ref<llvm::AssumptionCache& (llvm::Function&)>, llvm::function_ref<llvm::TargetLibraryInfo const& (llvm::Function&)>, llvm::function_ref<llvm::BlockFrequencyInfo& (llvm::Function&)>, llvm::ProfileSummaryInfo*, llvm::OptimizationRemarkEmitter*) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x43ebba6)\r\n#11 0x00000000043ed0ab llvm::InlineCost llvm::function_ref<llvm::InlineCost (llvm::CallBase&)>::callback_fn<getDefaultInlineAdvice(llvm::CallBase&, llvm::AnalysisManager<llvm::Function>&, llvm::InlineParams const&)::'lambda2'(llvm::CallBase&)>(long, llvm::CallBase&) InlineAdvisor.cpp:0:0\r\n#12 0x00000000043f310d llvm::shouldInline(llvm::CallBase&, llvm::function_ref<llvm::InlineCost (llvm::CallBase&)>, llvm::OptimizationRemarkEmitter&, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x43f310d)\r\n#13 0x00000000043f4af5 getDefaultInlineAdvice(llvm::CallBase&, llvm::AnalysisManager<llvm::Function>&, llvm::InlineParams const&) InlineAdvisor.cpp:0:0\r\n#14 0x00000000043f4d3b llvm::DefaultInlineAdvisor::getAdviceImpl(llvm::CallBase&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x43f4d3b)\r\n#15 0x00000000043eda71 llvm::InlineAdvisor::getAdvice(llvm::CallBase&, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x43eda71)\r\n#16 0x000000000371e48d llvm::InlinerPass::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x371e48d)\r\n#17 0x0000000002e127ae llvm::detail::PassModel<llvm::LazyCallGraph::SCC, llvm::InlinerPass, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2e127ae)\r\n#18 0x000000000431385b llvm::PassManager<llvm::LazyCallGraph::SCC, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x431385b)\r\n#19 0x0000000002e1154e llvm::detail::PassModel<llvm::LazyCallGraph::SCC, llvm::PassManager<llvm::LazyCallGraph::SCC, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2e1154e)\r\n#20 0x00000000043155b9 llvm::ModuleToPostOrderCGSCCPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x43155b9)\r\n#21 0x0000000002e1152e llvm::detail::PassModel<llvm::Module, llvm::ModuleToPostOrderCGSCCPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2e1152e)\r\n#22 0x0000000004c780c0 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4c780c0)\r\n#23 0x00000000008d8702 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8d8702)\r\n#24 0x00000000008cb60c optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8cb60c)\r\n#25 0x000077b96f029d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#26 0x000077b96f029e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#27 0x00000000008c2a6e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8c2a6e)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139\r\n```\r\nhttps://github.com/llvm/llvm-project/blob/f1a8f94bba8b090a0d667065e4b8b4fc66b6a5cc/llvm/lib/Analysis/InlineCost.cpp#L2647-L2648\r\nshould be removed as we use opaque pointers now.\r\n", "author": "dtcxzyw", "labels": [ "crash-on-valid", "llvm:analysis" ], "comments": [ { "author": "dtcxzyw", "body": "Related patch: #96878 " }, { "author": "dtcxzyw", "body": "Reduced reproducer: https://godbolt.org/z/rbjK6ETEW\r\n```\r\n; bin/opt -passes=inline reduced.ll -S\r\ndefine void @caller(<1 x ptr> %x) {\r\nentry:\r\n %p = bitcast <1 x ptr> %x to ptr\r\n call void @callee(ptr %p)\r\n ret void\r\n}\r\n\r\ndefine void @callee(ptr %p) {\r\nentry:\r\n ret void\r\n}\r\n```" } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "008df3cf85e9bb1532c079bfd7a7a00e90e0a3c6", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 3914, 3932 ], [ 9516, 9521 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationCostModel::collectLoopUniforms", "VPReplicateRecipe::execute" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/AArch64/divs-with-scalable-vfs.ll", "commands": [ "opt -p loop-vectorize -mtriple aarch64 -mcpu=neoverse-v1 -S %s" ], "tests": [ { "test_name": "udiv_urem_feeding_gep", "test_body": "define void @udiv_urem_feeding_gep(i64 %x, ptr %dst, i64 %N) {\nentry:\n %mul.1.i = mul i64 %x, %x\n %mul.2.i = mul i64 %mul.1.i, %x\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %div.i = udiv i64 %iv, %mul.2.i\n %rem.i = urem i64 %iv, %mul.2.i\n %div.1.i = udiv i64 %rem.i, %mul.1.i\n %rem.1.i = urem i64 %rem.i, %mul.1.i\n %div.2.i = udiv i64 %rem.1.i, %x\n %rem.2.i = urem i64 %rem.1.i, %x\n %mul.i = mul i64 %x, %div.i\n %add.i = add i64 %mul.i, %div.1.i\n %mul.1.i9 = mul i64 %add.i, %x\n %add.1.i = add i64 %mul.1.i9, %div.2.i\n %mul.2.i11 = mul i64 %add.1.i, %x\n %add.2.i = add i64 %mul.2.i11, %rem.2.i\n %sext.i = shl i64 %add.2.i, 32\n %conv6.i = ashr i64 %sext.i, 32\n %gep = getelementptr i64, ptr %dst, i64 %conv6.i\n store i64 %div.i, ptr %gep, align 4\n %iv.next = add i64 %iv, 1\n %exitcond.not = icmp eq i64 %iv, %N\n br i1 %exitcond.not, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "sdiv_feeding_gep_predicated", "test_body": "define void @sdiv_feeding_gep_predicated(ptr %dst, i32 %x, i64 %M, i64 %conv6, i64 %N) {\nentry:\n %conv61 = zext i32 %x to i64\n br label %loop\n\nloop: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %c = icmp ule i64 %iv, %M\n br i1 %c, label %then, label %loop.latch\n\nthen: ; preds = %loop\n %div18 = sdiv i64 %M, %conv6\n %conv20 = trunc i64 %div18 to i32\n %mul30 = mul i64 %div18, %conv61\n %sub31 = sub i64 %iv, %mul30\n %conv34 = trunc i64 %sub31 to i32\n %mul35 = mul i32 %x, %conv20\n %add36 = add i32 %mul35, %conv34\n %idxprom = sext i32 %add36 to i64\n %gep = getelementptr double, ptr %dst, i64 %idxprom\n store double 0.000000e+00, ptr %gep, align 8\n br label %loop.latch\n\nloop.latch: ; preds = %then, %loop\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, %N\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop.latch\n ret void\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "sdiv_feeding_gep", "test_body": "define void @sdiv_feeding_gep(ptr %dst, i32 %x, i64 %M, i64 %conv6, i64 %N) {\nentry:\n %conv61 = zext i32 %x to i64\n br label %loop\n\nloop: ; preds = %loop, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n %div18 = sdiv i64 %M, %conv6\n %conv20 = trunc i64 %div18 to i32\n %mul30 = mul i64 %div18, %conv61\n %sub31 = sub i64 %iv, %mul30\n %conv34 = trunc i64 %sub31 to i32\n %mul35 = mul i32 %x, %conv20\n %add36 = add i32 %mul35, %conv34\n %idxprom = sext i32 %add36 to i64\n %gep = getelementptr double, ptr %dst, i64 %idxprom\n store double 0.000000e+00, ptr %gep, align 8\n %iv.next = add i64 %iv, 1\n %ec = icmp eq i64 %iv.next, %N\n br i1 %ec, label %exit, label %loop\n\nexit: ; preds = %loop\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[VPlan] Report \"Assertion `!State->VF.isScalable() && \"VF is assumed to be non scalable.\"' failed\"", "body": "The IR is put at the end.\r\n\r\nCompile command is `opt -passes=loop-vectorize -prefer-predicate-over-epilogue=predicate-else-scalar-epilogue`\r\n\r\nThe error is\r\n```\r\nopt: /root/llvm-project/llvm/lib/Transforms/Vectorize/VPlan.cpp:734: virtual void llvm::VPRegionBlock::execute(llvm::VPTransformState*): Assertion `!State->VF.isScalable() && \"VF is assumed to be non scalable.\"' failed.\r\n```\r\n\r\nIt can be seen at https://godbolt.org/z/s4bqzdKPP\r\n\r\n```\r\n; ModuleID = 'test.cpp'\r\nsource_filename = \"test.cpp\"\r\ntarget datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\r\ntarget triple = \"aarch64-unknown-linux-gnu\"\r\n\r\n%struct.ident_t = type { i32, i32, i32, i32, ptr }\r\n\r\n@0 = private unnamed_addr constant [23 x i8] c\";unknown;unknown;0;0;;\\00\", align 1\r\n@1 = private unnamed_addr constant %struct.ident_t { i32 0, i32 514, i32 0, i32 22, ptr @0 }, align 8\r\n@2 = private unnamed_addr constant %struct.ident_t { i32 0, i32 2, i32 0, i32 22, ptr @0 }, align 8\r\n\r\n; Function Attrs: mustprogress nounwind uwtable vscale_range(1,16)\r\ndefine dso_local void @_Z4testiiPdS_(i32 noundef %nx, i32 noundef %ik, ptr noundef %out, ptr noundef %rspace) local_unnamed_addr #0 {\r\nentry:\r\n %nx.addr = alloca i32, align 4\r\n %ik.addr = alloca i32, align 4\r\n %out.addr = alloca ptr, align 8\r\n %rspace.addr = alloca ptr, align 8\r\n store i32 %nx, ptr %nx.addr, align 4\r\n store i32 %ik, ptr %ik.addr, align 4\r\n store ptr %out, ptr %out.addr, align 8\r\n store ptr %rspace, ptr %rspace.addr, align 8\r\n call void (ptr, i32, ptr, ...) @__kmpc_fork_call(ptr nonnull @2, i32 4, ptr nonnull @_Z4testiiPdS_.omp_outlined, ptr nonnull %nx.addr, ptr nonnull %ik.addr, ptr nonnull %out.addr, ptr nonnull %rspace.addr)\r\n ret void\r\n}\r\n\r\n; Function Attrs: alwaysinline norecurse nounwind uwtable vscale_range(1,16)\r\ndefine internal void @_Z4testiiPdS_.omp_outlined(ptr noalias nocapture noundef readonly %.global_tid., ptr noalias nocapture noundef readnone %.bound_tid., ptr noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) %nx, ptr noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) %ik, ptr noalias nocapture noundef nonnull readonly align 8 dereferenceable(8) %out, ptr noalias nocapture noundef nonnull readonly align 8 dereferenceable(8) %rspace) #1 {\r\nentry:\r\n %.omp.lb = alloca i64, align 8\r\n %.omp.ub = alloca i64, align 8\r\n %.omp.stride = alloca i64, align 8\r\n %.omp.is_last = alloca i32, align 4\r\n %0 = load i32, ptr %nx, align 4\r\n %1 = load i32, ptr %ik, align 4\r\n %cmp = icmp sgt i32 %0, 0\r\n %cmp8 = icmp sgt i32 %1, 0\r\n %or.cond = select i1 %cmp, i1 %cmp8, i1 false\r\n br i1 %or.cond, label %omp.precond.then, label %omp.precond.end\r\n\r\nomp.precond.then: ; preds = %entry\r\n %conv = zext i32 %0 to i64\r\n %conv6 = zext i32 %1 to i64\r\n %mul = mul nuw nsw i64 %conv6, %conv\r\n %sub7 = add nsw i64 %mul, -1\r\n call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %.omp.lb) #3\r\n store i64 0, ptr %.omp.lb, align 8\r\n call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %.omp.ub) #3\r\n store i64 %sub7, ptr %.omp.ub, align 8\r\n call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %.omp.stride) #3\r\n store i64 1, ptr %.omp.stride, align 8\r\n call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %.omp.is_last) #3\r\n store i32 0, ptr %.omp.is_last, align 4\r\n %2 = load i32, ptr %.global_tid., align 4\r\n call void @__kmpc_for_static_init_8(ptr nonnull @1, i32 %2, i32 33, ptr nonnull %.omp.is_last, ptr nonnull %.omp.lb, ptr nonnull %.omp.ub, ptr nonnull %.omp.stride, i64 1, i64 512)\r\n %3 = load i64, ptr %.omp.ub, align 8\r\n %cond60 = call i64 @llvm.smin.i64(i64 %3, i64 %sub7)\r\n store i64 %cond60, ptr %.omp.ub, align 8\r\n %4 = load i64, ptr %.omp.lb, align 8\r\n %cmp12.not61 = icmp sgt i64 %4, %cond60\r\n br i1 %cmp12.not61, label %omp.dispatch.end, label %omp.inner.for.cond.preheader.lr.ph\r\n\r\nomp.inner.for.cond.preheader.lr.ph: ; preds = %omp.precond.then\r\n br label %omp.inner.for.cond.preheader\r\n\r\nomp.inner.for.cond.preheader: ; preds = %omp.inner.for.cond.preheader.lr.ph, %omp.dispatch.inc\r\n %5 = phi i64 [ %4, %omp.inner.for.cond.preheader.lr.ph ], [ %add42, %omp.dispatch.inc ]\r\n %cond62 = phi i64 [ %cond60, %omp.inner.for.cond.preheader.lr.ph ], [ %cond, %omp.dispatch.inc ]\r\n %smax = call i64 @llvm.smax.i64(i64 %cond62, i64 %5)\r\n %6 = add i64 %smax, 1\r\n %7 = load ptr, ptr %rspace, align 8\r\n %8 = load ptr, ptr %out, align 8\r\n br label %omp.inner.for.body\r\n\r\nomp.inner.for.body: ; preds = %omp.inner.for.cond.preheader, %omp.inner.for.body\r\n %.omp.iv.059 = phi i64 [ %5, %omp.inner.for.cond.preheader ], [ %add41, %omp.inner.for.body ]\r\n %div18 = sdiv i64 %.omp.iv.059, %conv6\r\n %conv20 = trunc i64 %div18 to i32\r\n %mul30 = mul nsw i64 %div18, %conv6\r\n %sub31 = sub nsw i64 %.omp.iv.059, %mul30\r\n %conv34 = trunc i64 %sub31 to i32\r\n %mul35 = mul nsw i32 %1, %conv20\r\n %add36 = add nsw i32 %mul35, %conv34\r\n %idxprom = sext i32 %add36 to i64\r\n %arrayidx = getelementptr inbounds double, ptr %7, i64 %idxprom\r\n %9 = load double, ptr %arrayidx, align 8\r\n %arrayidx40 = getelementptr inbounds double, ptr %8, i64 %idxprom\r\n store double %9, ptr %arrayidx40, align 8\r\n %add41 = add i64 %.omp.iv.059, 1\r\n %exitcond = icmp ne i64 %add41, %6\r\n br i1 %exitcond, label %omp.inner.for.body, label %omp.dispatch.inc\r\n\r\nomp.dispatch.inc: ; preds = %omp.inner.for.body\r\n %10 = load i64, ptr %.omp.stride, align 8\r\n %add42 = add nsw i64 %10, %5\r\n store i64 %add42, ptr %.omp.lb, align 8\r\n %add43 = add nsw i64 %10, %cond62\r\n %cond = call i64 @llvm.smin.i64(i64 %add43, i64 %sub7)\r\n store i64 %cond, ptr %.omp.ub, align 8\r\n %cmp12.not = icmp sgt i64 %add42, %cond\r\n br i1 %cmp12.not, label %omp.dispatch.cond.omp.dispatch.end_crit_edge, label %omp.inner.for.cond.preheader\r\n\r\nomp.dispatch.cond.omp.dispatch.end_crit_edge: ; preds = %omp.dispatch.inc\r\n br label %omp.dispatch.end\r\n\r\nomp.dispatch.end: ; preds = %omp.dispatch.cond.omp.dispatch.end_crit_edge, %omp.precond.then\r\n call void @__kmpc_for_static_fini(ptr nonnull @1, i32 %2)\r\n call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %.omp.is_last) #3\r\n call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %.omp.stride) #3\r\n call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %.omp.ub) #3\r\n call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %.omp.lb) #3\r\n br label %omp.precond.end\r\n\r\nomp.precond.end: ; preds = %omp.dispatch.end, %entry\r\n ret void\r\n}\r\n\r\n; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)\r\ndeclare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2\r\n\r\n; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)\r\ndeclare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2\r\n\r\n; Function Attrs: nounwind\r\ndeclare void @__kmpc_for_static_init_8(ptr, i32, i32, ptr, ptr, ptr, ptr, i64, i64) local_unnamed_addr #3\r\n\r\n; Function Attrs: nounwind\r\ndeclare void @__kmpc_for_static_fini(ptr, i32) local_unnamed_addr #3\r\n\r\n; Function Attrs: nounwind\r\ndeclare void @__kmpc_fork_call(ptr, i32, ptr, ...) local_unnamed_addr #3\r\n\r\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\r\ndeclare i64 @llvm.smin.i64(i64, i64) #4\r\n\r\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\r\ndeclare i64 @llvm.smax.i64(i64, i64) #4\r\n\r\nattributes #0 = { mustprogress nounwind uwtable vscale_range(1,16) \"frame-pointer\"=\"non-leaf\" \"no-trapping-math\"=\"true\" \"stack-protector-buffer-size\"=\"8\" \"target-cpu\"=\"generic\" \"target-features\"=\"+fp-armv8,+fullfp16,+neon,+sve,+v8a,-fmv\" }\r\nattributes #1 = { alwaysinline norecurse nounwind uwtable vscale_range(1,16) \"frame-pointer\"=\"non-leaf\" \"no-trapping-math\"=\"true\" \"stack-protector-buffer-size\"=\"8\" \"target-cpu\"=\"generic\" \"target-features\"=\"+fp-armv8,+fullfp16,+neon,+sve,+v8a,-fmv\" }\r\nattributes #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }\r\nattributes #3 = { nounwind }\r\nattributes #4 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\r\n\r\n```", "author": "eastB233", "labels": [ "vectorizers", "crash" ], "comments": [ { "author": "eastB233", "body": "Simpler test case is\r\n```c\r\nextern const int npy;\r\nextern const int nx;\r\ndouble* rspace;\r\n\r\nvoid recip2real(double* out, const double factor)\r\n{\r\n#ifdef _OPENMP\r\n#pragma omp parallel for collapse(2)\r\n#endif\r\n for (int ix = 0; ix < nx; ++ix)\r\n {\r\n for (int ipy = 0; ipy < npy; ++ipy) {\r\n out[ix * npy + ipy] += factor * rspace[ix * npy + ipy];\r\n }\r\n }\r\n}\r\n```\r\n\r\nCommand is `clang -O3 -march=armv9-a -fopenmp -mllvm -prefer-predicate-over-epilogue=predicate-else-scalar-epilogue -S`\r\n\r\nIt can be seen at https://godbolt.org/z/6MGsecEr5" }, { "author": "eastB233", "body": "I don't know much about VPlan, and as far as I understand by tracing the code,\r\n\r\n### first, it fails at the following VPlan\r\n```\r\nVPlan 'Initial VPlan for VF={vscale x 1,vscale x 2},UF>=1' {\r\nvp<%2> = original trip-count\r\n\r\nph:\r\n EMIT vp<%2> = EXPAND SCEV (1 + (-1 * %5) + ((-1 + ((zext i32 %0 to i64) * (sext i32 %1 to i64)))<nsw> smin %4))\r\nNo successors\r\n\r\nvector.ph:\r\n EMIT vp<%3> = TC > VF ? TC - VF : 0 vp<%2>\r\n EMIT vp<%4> = VF * Part + ir<0>\r\n EMIT vp<%5> = active lane mask vp<%4>, vp<%2>\r\nSuccessor(s): vector loop\r\n\r\n<x1> vector loop: {\r\n vector.body:\r\n EMIT vp<%6> = CANONICAL-INDUCTION\r\n ACTIVE-LANE-MASK-PHI vp<%7> = phi vp<%5>, vp<%27>\r\n vp<%8> = DERIVED-IV ir<%5> + vp<%6> * ir<1>\r\n vp<%9> = SCALAR-STEPS vp<%8>, ir<1>\r\n Successor(s): pred.sdiv\r\n\r\n <xVFxUF> pred.sdiv: {\r\n pred.sdiv.entry:\r\n BRANCH-ON-MASK vp<%7>\r\n Successor(s): pred.sdiv.if, pred.sdiv.continue\r\n\r\n pred.sdiv.if:\r\n CLONE ir<%div24> = sdiv vp<%9>, ir<%conv6>\r\n Successor(s): pred.sdiv.continue\r\n\r\n pred.sdiv.continue:\r\n PHI-PREDICATED-INSTRUCTION vp<%11> = ir<%div24>\r\n No successors\r\n }\r\n Successor(s): omp.inner.for.body.0\r\n\r\n omp.inner.for.body.0:\r\n CLONE ir<%conv26> = trunc vp<%11>\r\n CLONE ir<%mul36> = mul nsw vp<%11>, ir<%conv6>\r\n CLONE ir<%sub37> = sub nsw vp<%9>, ir<%mul36>\r\n CLONE ir<%conv40> = trunc ir<%sub37>\r\n CLONE ir<%mul41> = mul nsw ir<%1>, ir<%conv26>\r\n CLONE ir<%add42> = add nsw ir<%mul41>, ir<%conv40>\r\n CLONE ir<%idxprom> = sext ir<%add42>\r\n CLONE ir<%arrayidx> = getelementptr inbounds ir<%6>, ir<%idxprom>\r\n WIDEN ir<%8> = load ir<%arrayidx>, vp<%7>\r\n WIDEN ir<%mul43> = fmul contract ir<%2>, ir<%8>\r\n CLONE ir<%arrayidx47> = getelementptr inbounds ir<%7>, ir<%idxprom>\r\n WIDEN ir<%9> = load ir<%arrayidx47>, vp<%7>\r\n WIDEN ir<%add48> = fadd contract ir<%mul43>, ir<%9>\r\n WIDEN store ir<%arrayidx47>, ir<%add48>, vp<%7>\r\n EMIT vp<%25> = VF * UF + vp<%6>\r\n EMIT vp<%26> = VF * Part + vp<%6>\r\n EMIT vp<%27> = active lane mask vp<%26>, vp<%3>\r\n EMIT vp<%28> = not vp<%27>\r\n EMIT branch-on-cond vp<%28>\r\n No successors\r\n}\r\nSuccessor(s): middle.block\r\n```\r\n\r\nVPRegion `pred.sdiv` fails at assertion\r\n```c++\r\nvoid VPRegionBlock::execute(VPTransformState *State) {\r\n...\r\n if (!isReplicator()) {\r\n...\r\n return;\r\n }\r\n...\r\n for (...) {\r\n assert(!State->VF.isScalable() && \"VF is assumed to be non scalable.\");\r\n }\r\n}\r\n```\r\nI think VPRegion `pred.sdiv` should have `isReplicator() == false` or `pred.sdiv` just should not exist.\r\n\r\n### second, I find VPRegion `pred.sdiv` is splitted from `WorkList`\r\n```c++\r\nstatic void addReplicateRegions(VPlan &Plan) {\r\n SmallVector<VPReplicateRecipe *> WorkList;\r\n for (VPBasicBlock *VPBB : VPBlockUtils::blocksOnly<VPBasicBlock>(\r\n vp_depth_first_deep(Plan.getEntry()))) {\r\n for (VPRecipeBase &R : *VPBB)\r\n if (auto *RepR = dyn_cast<VPReplicateRecipe>(&R)) {\r\n if (RepR->isPredicated())\r\n WorkList.push_back(RepR);\r\n }\r\n }\r\n...\r\n}\r\n```\r\nby VPRecipe `CLONE ir<%div24> = sdiv ir<%.omp.iv.065>, ir<%conv6>, vp<%7>`, where the instruction is `%div24 = sdiv i64 %.omp.iv.065, %conv6`\r\nI think this VPRecipe should have `isPredicated() == false` here, so it will not be splitted.\r\n\r\n### third, I find this VPRecipe is created here\r\n```c++\r\nVPRecipeOrVPValueTy VPRecipeBuilder::handleReplication(...) {\r\n bool IsUniform = LoopVectorizationPlanner::getDecisionAndClampRange(\r\n [&](ElementCount VF) { return CM.isUniformAfterVectorization(I, VF); },\r\n Range);\r\n\r\n bool IsPredicated = CM.isPredicatedInst(I);\r\n...\r\n VPValue *BlockInMask = nullptr;\r\n if (!IsPredicated) {\r\n // Finalize the recipe for Instr, first if it is not predicated.\r\n LLVM_DEBUG(dbgs() << \"LV: Scalarizing:\" << *I << \"\\n\");\r\n } else {\r\n LLVM_DEBUG(dbgs() << \"LV: Scalarizing and predicating:\" << *I << \"\\n\");\r\n // Instructions marked for predication are replicated and a mask operand is\r\n // added initially. Masked replicate recipes will later be placed under an\r\n // if-then construct to prevent side-effects. Generate recipes to compute\r\n // the block mask for this region.\r\n BlockInMask = createBlockInMask(I->getParent(), Plan);\r\n }\r\n\r\n auto *Recipe = new VPReplicateRecipe(I, Plan.mapToVPValues(I->operands()),\r\n IsUniform, BlockInMask);\r\n return toVPRecipeResult(Recipe);\r\n}\r\n```\r\nI notice that instruction `I` (`%div24 = sdiv i64 %.omp.iv.065, %conv6`) do not need to vectorize, because function `isScalarAfterVectorization` returns true and `I` is just used to calculate the index.\r\nIt seems reasonable that a `scalar` instruction does not need `Predicated`.\r\n\r\n### So I try the following modification,\r\n```diff\r\ndiff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp\r\nindex 907b8ce002e8..76a5704a61c5 100644\r\n--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp\r\n+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp\r\n@@ -9819,7 +9819,9 @@ VPRecipeOrVPValueTy VPRecipeBuilder::handleReplication(Instruction *I,\r\n [&](ElementCount VF) { return CM.isUniformAfterVectorization(I, VF); },\r\n Range);\r\n\r\n- bool IsPredicated = CM.isPredicatedInst(I);\r\n+ bool IsPredicated = LoopVectorizationPlanner::getDecisionAndClampRange(\r\n+ [&](ElementCount VF) { return CM.isPredicatedInst(I) && !CM.isScalarAfterVectorization(I, VF); },\r\n+ Range);\r\n\r\n // Even if the instruction is not marked as uniform, there are certain\r\n // intrinsic calls that can be effectively treated as such, so we check for\r\n```\r\n\r\nJust my guess, I'm not sure if it is correct direction." }, { "author": "eastB233", "body": "Ping @fhahn " }, { "author": "eastB233", "body": "I think I misunderstand something, and the changes above may be wrong.\r\n\r\nAnd I have another way. In instruction `%div24 = sdiv i64 %.omp.iv.065, %conv6`, `%conv6` is invariant in loop, so it seems we do not need `Predicated`.\r\n\r\nI try the following patch,\r\n```diff\r\ndiff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp\r\nindex c7c19ef456c7..f294703e1529 100644\r\n--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp\r\n+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp\r\n@@ -3856,21 +3856,21 @@ bool LoopVectorizationCostModel::isPredicatedInst(Instruction *I) const {\r\n !Legal->blockNeedsPredication(I->getParent()))\r\n return false;\r\n return true;\r\n }\r\n case Instruction::UDiv:\r\n case Instruction::SDiv:\r\n case Instruction::SRem:\r\n case Instruction::URem:\r\n // TODO: We can use the loop-preheader as context point here and get\r\n // context sensitive reasoning\r\n- return !isSafeToSpeculativelyExecute(I);\r\n+ return !isSafeToSpeculativelyExecute(I) && !Legal->isInvariant(I->getOperand(1));\r\n case Instruction::Call:\r\n return Legal->isMaskRequired(I);\r\n }\r\n }\r\n\r\n std::pair<InstructionCost, InstructionCost>\r\n LoopVectorizationCostModel::getDivRemSpeculationCost(Instruction *I,\r\n ElementCount VF) const {\r\n assert(I->getOpcode() == Instruction::UDiv ||\r\n I->getOpcode() == Instruction::SDiv ||\r\n\r\n```" }, { "author": "eastB233", "body": "ping @sdesmalen-arm @davemgreen @paulwalker-arm " }, { "author": "fhahn", "body": "@eastB233 unfortunately I don't think this change is correct, e.g. consider https://github.com/llvm/llvm-project/blob/967eba07549d64f15e7a91e798aa46214704f62b/llvm/test/Transforms/LoopVectorize/X86/divs-with-tail-folding.ll#L251 when the sdiv/udiv is executed conditionally in the loop" } ] }

[ "llvm/test/Transforms/AggressiveInstCombine" ]

{ "fix_commit": "f68b0e36997322eeda8fd199ea80deb1b49c5410", "components": [ "AggressiveInstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": [ [ 803, 810 ] ], "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": [ "foldConsecutiveLoads" ], "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/AggressiveInstCombine/X86/or-load.ll", "commands": [ "opt < %s -passes=aggressive-instcombine -mtriple x86_64-none-eabi -mattr=avx2 -data-layout=\"e-n64\" -S", "opt < %s -passes=aggressive-instcombine -mtriple x86_64-none-eabi -mattr=avx2 -data-layout=\"E-n64\" -S" ], "tests": [ { "test_name": "loadcombine_consecutive_idx_64", "test_body": "define i32 @loadcombine_consecutive_idx_64(ptr %data) {\nentry:\n %arrayidx = getelementptr inbounds nuw i8, ptr %data, i64 2149675577\n %val = load i8, ptr %arrayidx, align 1\n %conv = zext i8 %val to i32\n %arrayidx.2 = getelementptr inbounds nuw i8, ptr %data, i64 2149675576\n %val.2 = load i8, ptr %arrayidx.2, align 1\n %conv.2 = zext i8 %val.2 to i32\n %shl = shl nuw nsw i32 %conv, 8\n %or = or disjoint i32 %shl, %conv.2\n ret i32 %or\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Invalid LLVM IR code generated on x86-64 with a very simple sample (crash the generated executable code)", "body": "Below is a very simple program that's loading 16 bits table value into a 32 bits variable from a 8 bits table.\nOn **x86-64** with **-O2** or **-O3** flags, this program works fine with LLVM 16.0.0 and below, but since LLVM 17.0.0, the LLVM IR and the generated assembly code are using a wrong calculated offset on the table (doesn't occurs on LLVM armv8 whatever the version).\nAs you can see below, the offset in the table which is supposed to be **2149675576** (**0x80217238**) has its 32 upper bits inverted for **-2145291720** (**0xFFFFFFFF80217238**).\n\n```c\n\n#include <stdint.h>\n\n// Load 16 bits into 32 bits value from data offset 0x80217238\n\nuint32_t Test(const uint8_t* data)\n{ \n uint32_t a, b, c; \n\tb = 0xFFFF8022 << 16;\n b += 0xFFFFE808; \n a = data[b + 0xFFFF8A31];\n c = data[b + 0xFFFF8A30];\n c &= ~0x0000FF00;\n c |= ((a << 8) | (a >> 24)) & 0x0000FF00;\n\treturn c;\n}\n\n```\n\nLLVM IR with LLVM 16.0.0 (from Compiler Explorer)\n```ll\ndefine dso_local noundef i32 @Test(unsigned char const*)(ptr nocapture noundef readonly %data) local_unnamed_addr {\nentry:\n %arrayidx4 = getelementptr inbounds i8, ptr %data, i64 2149675576\n %0 = load i16, ptr %arrayidx4, align 1\n %1 = zext i16 %0 to i32\n ret i32 %1\n}\n\ndeclare void @llvm.dbg.value(metadata, metadata, metadata) #1\n```\nLLVM IR with LLVM 19.1.0 and trunk (from Compiler Explorer)\n```ll\ndefine dso_local noundef range(i32 0, 65536) i32 @Test(unsigned char const*)(ptr nocapture noundef readonly %data) local_unnamed_addr {\nentry:\n %0 = getelementptr i8, ptr %data, i64 -2145291720\n %1 = load i16, ptr %0, align 1\n %2 = zext i16 %1 to i32\n ret i32 %2\n}\n```\n\n\n\n\n\n", "author": "dje64240", "labels": [ "miscompilation", "llvm:transforms" ], "comments": [ { "author": "topperc", "body": "opt-bisect suggests AggressiveInstCominer. There were two separate loads that got merged. The resulting GEP had an index of `i32 -2145291720` with trunk and `i64 2149675576` with clang 16. Those would be the same number if GEP zero extended indices instead of sign extending." }, { "author": "antoniofrighetto", "body": "Alive2: https://alive2.llvm.org/ce/z/G5CgkD." }, { "author": "AZero13", "body": "> opt-bisect suggests AggressiveInstCominer. There were two separate loads that got merged. The resulting GEP had an index of `i32 -2145291720` with trunk and `i64 2149675576` with clang 16. Those would be the same number if GEP zero extended indices instead of sign extending.\n\nSee my PR for 19.x " } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "cb4efe1d078144a72306732a56afea3885650e8d", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ [ 7237, 7242 ], [ 7292, 7298 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": [ "LoopVectorizationPlanner::computeBestVF", "LoopVectorizationPlanner::cost" ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/RISCV/blocks-with-dead-instructions.ll", "commands": [ "opt -p loop-vectorize -S %s" ], "tests": [ { "test_name": "empty_block_with_phi_2", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @empty_block_with_phi_2(ptr %src, i64 %N) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %xor1315 = phi i32 [ 1, %entry ], [ %xor, %loop.latch ]\n %xor = xor i32 0, 0\n %gep = getelementptr i16, ptr %src, i64 %iv\n %l = load i16, ptr %gep, align 2\n %c = icmp eq i16 %l, 0\n br i1 %c, label %loop.latch, label %else\n\nelse: ; preds = %loop.header\n br label %loop.latch\n\nloop.latch: ; preds = %else, %loop.header\n %p = phi i16 [ %l, %loop.header ], [ 99, %else ]\n store i16 %p, ptr %gep, align 2\n %iv.next = add nsw i64 %iv, 1\n %0 = icmp eq i64 %iv.next, %N\n br i1 %0, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+64bit,+v\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "dead_load_in_block", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @dead_load_in_block(ptr %dst, ptr %src, i8 %N, i64 %x) #0 {\nentry:\n %N.ext = zext i8 %N to i64\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %l.0 = load i32, ptr %src, align 4\n %c.0 = icmp eq i32 %l.0, 0\n br i1 %c.0, label %loop.latch, label %then\n\nthen: ; preds = %loop.header\n %gep.src.x = getelementptr i32, ptr %src, i64 %x\n %l.dead = load i32, ptr %gep.src.x, align 4\n br label %loop.latch\n\nloop.latch: ; preds = %then, %loop.header\n %gep.dst = getelementptr i32, ptr %dst, i64 %iv\n store i32 0, ptr %gep.dst, align 4\n %iv.next = add i64 %iv, 3\n %cmp = icmp ult i64 %iv, %N.ext\n br i1 %cmp, label %loop.header, label %exit\n\nexit: ; preds = %loop.latch\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+64bit,+v\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "multiple_blocks_with_dead_insts_3", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @multiple_blocks_with_dead_insts_3(ptr %src) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %xor1315 = phi i16 [ 0, %entry ], [ %xor, %loop.latch ]\n %xor = xor i16 0, 0\n %gep = getelementptr i16, ptr %src, i64 %iv\n %l = load i16, ptr %gep, align 2\n %c = icmp eq i16 %l, 0\n br i1 %c, label %then, label %else\n\nthen: ; preds = %loop.header\n %dead.gep.1 = getelementptr i64, ptr %src, i64 %iv\n br label %loop.latch\n\nelse: ; preds = %loop.header\n %dead.gep.2 = getelementptr i64, ptr %src, i64 %iv\n br label %loop.latch\n\nloop.latch: ; preds = %else, %then\n store i16 %xor, ptr %gep, align 2\n %iv.next = add nsw i64 %iv, 3\n %ec = icmp eq i64 %iv.next, 1000\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+64bit,+v\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "multiple_blocks_with_dead_insts_4", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @multiple_blocks_with_dead_insts_4(ptr %src, i64 %N) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %xor1315 = phi i16 [ 1, %entry ], [ %xor, %loop.latch ]\n %xor = xor i16 0, 0\n %gep = getelementptr i16, ptr %src, i64 %iv\n %l = load i16, ptr %gep, align 2\n %c = icmp eq i16 %l, 0\n br i1 %c, label %then, label %else\n\nthen: ; preds = %loop.header\n br label %then.1\n\nthen.1: ; preds = %then\n %dead.gep.1 = getelementptr i64, ptr %src, i64 %iv\n br label %loop.latch\n\nelse: ; preds = %loop.header\n %dead.gep.2 = getelementptr i64, ptr %src, i64 %iv\n br label %loop.latch\n\nloop.latch: ; preds = %else, %then.1\n store i16 %xor, ptr %gep, align 2\n %iv.next = add nsw i64 %iv, 3\n %ec = icmp eq i64 %iv.next, %N\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+64bit,+v\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "empty_block_with_phi_1", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @empty_block_with_phi_1(ptr %src, i64 %N) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %xor1315 = phi i32 [ 1, %entry ], [ %xor, %loop.latch ]\n %xor = xor i32 0, 0\n %gep = getelementptr i16, ptr %src, i64 %iv\n %l = load i16, ptr %gep, align 2\n %c = icmp eq i16 %l, 0\n br i1 %c, label %then, label %loop.latch\n\nthen: ; preds = %loop.header\n br label %loop.latch\n\nloop.latch: ; preds = %then, %loop.header\n %p = phi i16 [ %l, %loop.header ], [ 99, %then ]\n store i16 %p, ptr %gep, align 2\n %iv.next = add nsw i64 %iv, 1\n %0 = icmp eq i64 %iv.next, %N\n br i1 %0, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+64bit,+v\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "block_with_dead_inst_2", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @block_with_dead_inst_2(ptr %src) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %xor1315 = phi i16 [ 0, %entry ], [ %xor, %loop.latch ]\n %xor = xor i16 0, 0\n %gep = getelementptr i16, ptr %src, i64 %iv\n %l = load i16, ptr %gep, align 2\n %c = icmp eq i16 %l, 0\n br i1 %c, label %loop.latch, label %else\n\nelse: ; preds = %loop.header\n %dead.gep = getelementptr i64, ptr %src, i64 %iv\n br label %loop.latch\n\nloop.latch: ; preds = %else, %loop.header\n store i16 %xor, ptr %gep, align 2\n %iv.next = add nsw i64 %iv, 3\n %ec = icmp eq i64 %iv.next, 1000\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+64bit,+v\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "multiple_blocks_with_dead_inst_multiple_successors_6", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @multiple_blocks_with_dead_inst_multiple_successors_6(ptr %src, i1 %ic, i64 %N) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %xor1315 = phi i16 [ 1, %entry ], [ %xor, %loop.latch ]\n %xor = xor i16 0, 0\n %gep = getelementptr i16, ptr %src, i64 %iv\n %l = load i16, ptr %gep, align 2\n %c = icmp eq i16 %l, 0\n br i1 %c, label %then, label %else\n\nthen: ; preds = %loop.header\n br i1 %ic, label %then.1, label %else\n\nthen.1: ; preds = %then\n %dead.gep.1 = getelementptr i64, ptr %src, i64 %iv\n br label %loop.latch\n\nelse: ; preds = %then, %loop.header\n br label %else.2\n\nelse.2: ; preds = %else\n %dead.gep.2 = getelementptr i64, ptr %src, i64 %iv\n br label %loop.latch\n\nloop.latch: ; preds = %else.2, %then.1\n store i16 %xor, ptr %gep, align 2\n %iv.next = add nsw i64 %iv, 3\n %ec = icmp eq i64 %iv.next, %N\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+64bit,+v\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "multiple_blocks_with_dead_inst_multiple_successors_5", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @multiple_blocks_with_dead_inst_multiple_successors_5(ptr %src) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %xor1315 = phi i16 [ 1, %entry ], [ %xor, %loop.latch ]\n %xor = xor i16 0, 0\n %gep = getelementptr i16, ptr %src, i64 %iv\n %l = load i16, ptr %gep, align 2\n %c = icmp eq i16 %l, 0\n br i1 %c, label %then, label %else\n\nthen: ; preds = %loop.header\n br label %then.1\n\nthen.1: ; preds = %then\n %dead.gep.1 = getelementptr i64, ptr %src, i64 %iv\n br label %loop.latch\n\nelse: ; preds = %loop.header\n br label %else.2\n\nelse.2: ; preds = %else\n %dead.gep.2 = getelementptr i64, ptr %src, i64 %iv\n br label %loop.latch\n\nloop.latch: ; preds = %else.2, %then.1\n store i16 %xor, ptr %gep, align 2\n %iv.next = add nsw i64 %iv, 3\n %ec = icmp eq i64 %iv.next, 1000\n br i1 %ec, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+64bit,+v\" }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "block_with_dead_inst_1", "test_body": "target datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\ndefine void @block_with_dead_inst_1(ptr %src, i64 %N) #0 {\nentry:\n br label %loop.header\n\nloop.header: ; preds = %loop.latch, %entry\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %xor1315 = phi i16 [ 1, %entry ], [ %xor, %loop.latch ]\n %xor = xor i16 0, 0\n %gep = getelementptr i16, ptr %src, i64 %iv\n %l = load i16, ptr %gep, align 2\n %c = icmp eq i16 %l, 0\n br i1 %c, label %then, label %loop.latch\n\nthen: ; preds = %loop.header\n %dead.gep = getelementptr i64, ptr %src, i64 %iv\n br label %loop.latch\n\nloop.latch: ; preds = %then, %loop.header\n store i16 %xor, ptr %gep, align 2\n %iv.next = add nsw i64 %iv, 3\n %0 = icmp eq i64 %iv.next, %N\n br i1 %0, label %exit, label %loop.header\n\nexit: ; preds = %loop.latch\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+64bit,+v\" }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[VPlan] Assertion `VF.Width == BestVF && \"VPlan cost model and legacy cost model disagreed\"' failed.", "body": "Tested using d082f1f37d8cb7a0c6875537ba873a631b154d53\r\n\r\nC Testcase:\r\n```c\r\nint a;\r\nextern int b[];\r\nsigned char c;\r\nint d[1];\r\nvoid e() {\r\n for (short f = 2; f < c; f += 3) {\r\n a = ({ d[f - 1]; }) ? d[f] : 0;\r\n b[f] = 0;\r\n }\r\n}\r\n```\r\nCommand:\r\n```\r\n/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/clang -march=rv64gcv_zvl256b -O3 red.c -o /dev/null\r\n```\r\n\r\nTestcase:\r\n```llvm ir\r\n; ModuleID = 'reduced.bc'\r\ntarget datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\r\ntarget triple = \"riscv64-unknown-linux-gnu\"\r\n\r\ndefine void @e(i8 %0, i64 %indvars.iv) #0 {\r\nentry:\r\n %1 = zext i8 %0 to i64\r\n br label %for.body\r\n\r\nfor.cond.for.cond.cleanup_crit_edge: ; preds = %cond.end\r\n ret void\r\n\r\nfor.body: ; preds = %cond.end, %entry\r\n %indvars.iv1 = phi i64 [ 0, %entry ], [ %indvars.iv.next, %cond.end ]\r\n %sub = add i64 0, 0\r\n %arrayidx = getelementptr [1 x i32], ptr null, i64 0, i64 %sub\r\n %2 = load i32, ptr %arrayidx, align 4\r\n %tobool.not = icmp eq i32 %2, 0\r\n br i1 %tobool.not, label %cond.end, label %cond.true\r\n\r\ncond.true: ; preds = %for.body\r\n %arrayidx5 = getelementptr [1 x i32], ptr null, i64 0, i64 %indvars.iv\r\n %3 = load i32, ptr %arrayidx5, align 4\r\n br label %cond.end\r\n\r\ncond.end: ; preds = %cond.true, %for.body\r\n %arrayidx7 = getelementptr [0 x i32], ptr null, i64 0, i64 %indvars.iv1\r\n store i32 0, ptr %arrayidx7, align 4\r\n %indvars.iv.next = add i64 %indvars.iv1, 3\r\n %cmp = icmp ult i64 %indvars.iv1, %1\r\n br i1 %cmp, label %for.body, label %for.cond.for.cond.cleanup_crit_edge\r\n}\r\n\r\nattributes #0 = { \"target-features\"=\"+64bit,+a,+c,+d,+f,+m,+relax,+v,+zicsr,+zifencei,+zmmul,+zve32f,+zve32x,+zve64d,+zve64f,+zve64x,+zvl128b,+zvl256b,+zvl32b,+zvl64b,-b,-e,-experimental-smmpm,-experimental-smnpm,-experimental-ssnpm,-experimental-sspm,-experimental-ssqosid,-experimental-supm,-experimental-zacas,-experimental-zalasr,-experimental-zicfilp,-experimental-zicfiss,-h,-shcounterenw,-shgatpa,-shtvala,-shvsatpa,-shvstvala,-shvstvecd,-smaia,-smcdeleg,-smcsrind,-smepmp,-smstateen,-ssaia,-ssccfg,-ssccptr,-sscofpmf,-sscounterenw,-sscsrind,-ssstateen,-ssstrict,-sstc,-sstvala,-sstvecd,-ssu64xl,-svade,-svadu,-svbare,-svinval,-svnapot,-svpbmt,-xcvalu,-xcvbi,-xcvbitmanip,-xcvelw,-xcvmac,-xcvmem,-xcvsimd,-xsfcease,-xsfvcp,-xsfvfnrclipxfqf,-xsfvfwmaccqqq,-xsfvqmaccdod,-xsfvqmaccqoq,-xsifivecdiscarddlone,-xsifivecflushdlone,-xtheadba,-xtheadbb,-xtheadbs,-xtheadcmo,-xtheadcondmov,-xtheadfmemidx,-xtheadmac,-xtheadmemidx,-xtheadmempair,-xtheadsync,-xtheadvdot,-xventanacondops,-xwchc,-za128rs,-za64rs,-zaamo,-zabha,-zalrsc,-zama16b,-zawrs,-zba,-zbb,-zbc,-zbkb,-zbkc,-zbkx,-zbs,-zca,-zcb,-zcd,-zce,-zcf,-zcmop,-zcmp,-zcmt,-zdinx,-zfa,-zfbfmin,-zfh,-zfhmin,-zfinx,-zhinx,-zhinxmin,-zic64b,-zicbom,-zicbop,-zicboz,-ziccamoa,-ziccif,-zicclsm,-ziccrse,-zicntr,-zicond,-zihintntl,-zihintpause,-zihpm,-zimop,-zk,-zkn,-zknd,-zkne,-zknh,-zkr,-zks,-zksed,-zksh,-zkt,-ztso,-zvbb,-zvbc,-zvfbfmin,-zvfbfwma,-zvfh,-zvfhmin,-zvkb,-zvkg,-zvkn,-zvknc,-zvkned,-zvkng,-zvknha,-zvknhb,-zvks,-zvksc,-zvksed,-zvksg,-zvksh,-zvkt,-zvl1024b,-zvl16384b,-zvl2048b,-zvl32768b,-zvl4096b,-zvl512b,-zvl65536b,-zvl8192b\" }\r\n```\r\n\r\nCommand/backtrace:\r\n```\r\n> /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt -passes loop-vectorize reduced.ll -S\r\nopt: /scratch/tc-testing/tc-compiler-fuzz-trunk/llvm/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:10037: bool llvm::LoopVectorizePass::processLoop(llvm::Loop*): Assertion `VF.Width == BestVF && \"VPlan cost model and legacy cost model disagreed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0. Program arguments: /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt -passes loop-vectorize reduced.ll -S\r\n1. Running pass \"function(loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>)\" on module \"reduced.ll\"\r\n2. Running pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"e\"\r\n #0 0x000063e889a673c0 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2ff63c0)\r\n #1 0x000063e889a647df llvm::sys::RunSignalHandlers() (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2ff37df)\r\n #2 0x000063e889a64935 SignalHandler(int) Signals.cpp:0:0\r\n #3 0x00007a5322242520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #4 0x00007a53222969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76\r\n #5 0x00007a53222969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10\r\n #6 0x00007a53222969fc pthread_kill ./nptl/pthread_kill.c:89:10\r\n #7 0x00007a5322242476 gsignal ./signal/../sysdeps/posix/raise.c:27:6\r\n #8 0x00007a53222287f3 abort ./stdlib/abort.c:81:7\r\n #9 0x00007a532222871b _nl_load_domain ./intl/loadmsgcat.c:1177:9\r\n#10 0x00007a5322239e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n#11 0x000063e888a5ba9a llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x1feaa9a)\r\n#12 0x000063e888a5df51 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x1fecf51)\r\n#13 0x000063e888a5e5c7 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x1fed5c7)\r\n#14 0x000063e8878c6096 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xe55096)\r\n#15 0x000063e88987deef llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2e0ceef)\r\n#16 0x000063e8878c91d6 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xe581d6)\r\n#17 0x000063e88987cc6b llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2e0bc6b)\r\n#18 0x000063e8878c54c6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0xe544c6)\r\n#19 0x000063e88987accd llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x2e09ccd)\r\n#20 0x000063e8870f3eb6 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x682eb6)\r\n#21 0x000063e8870e5c41 optMain (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x674c41)\r\n#22 0x00007a5322229d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16\r\n#23 0x00007a5322229e40 call_init ./csu/../csu/libc-start.c:128:20\r\n#24 0x00007a5322229e40 __libc_start_main ./csu/../csu/libc-start.c:379:5\r\n#25 0x000063e8870dbff5 _start (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt+0x66aff5)\r\nzsh: IOT instruction (core dumped) /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/opt\r\n```\r\nGodbolt: https://godbolt.org/z/v1nbzWqMb\r\n\r\nFound via fuzzer.\r\n\r\ncc @fhahn ", "author": "patrick-rivos", "labels": [ "vectorizers", "crash" ], "comments": [ { "author": "patrick-rivos", "body": "Linking some meta-discussion about the assert here: https://github.com/llvm/llvm-project/issues/100591" }, { "author": "zhendongsu", "body": "Some additional reproducers on x86_64-linux-gnu in case they are of help:\r\n\r\n```\r\n[519] % clangtk -v\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git 410f751144e8b2e9574f03e0d0fb8560fe3cb797)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9\r\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nCandidate multilib: .;@m64\r\nSelected multilib: .;@m64\r\n[520] % \r\n[520] % clangtk -Os small.c\r\nclang-20: /local/suz-local/software/clangbuild/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7288: llvm::VectorizationFactor llvm::LoopVectorizationPlanner::computeBestVF(): Assertion `BestFactor.Width == LegacyVF.Width && \" VPlan cost model and legacy cost model disagreed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0.\tProgram arguments: /local/suz-local/software/local/clang-trunk/bin/clang-20 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/WAIT/20240822-clangtk-m64-Os-Wall-Wextra-pipe-fPIC-build-182745/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/WAIT/20240822-clangtk-m64-Os-Wall-Wextra-pipe-fPIC-build-182745/delta -resource-dir /local/suz-local/software/local/clang-trunk/lib/clang/20 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/suz-local/software/local/clang-trunk/lib/clang/20/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Os -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-e51115.o -x c small.c\r\n1.\t<eof> parser at end of file\r\n2.\tOptimizer\r\n3.\tRunning pass \"function<eager-inv>(float2int,lower-constant-intrinsics,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-unroll<O2>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"small.c\"\r\n4.\tRunning pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"main\"\r\n #0 0x00005559685ec3ef llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x42ea3ef)\r\n #1 0x00005559685e9934 SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007f0380f76420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)\r\n #3 0x00007f03809ad00b raise /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1\r\n #4 0x00007f038098c859 abort /build/glibc-LcI20x/glibc-2.31/stdlib/abort.c:81:7\r\n #5 0x00007f038098c729 get_sysdep_segment_value /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:509:8\r\n #6 0x00007f038098c729 _nl_load_domain /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:970:34\r\n #7 0x00007f038099dfd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)\r\n #8 0x0000555969ef4948 llvm::LoopVectorizationPlanner::computeBestVF() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5bf2948)\r\n #9 0x0000555969f0f9ea llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c0d9ea)\r\n#10 0x0000555969f12691 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c10691)\r\n#11 0x0000555969f12d43 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c10d43)\r\n#12 0x0000555969a9d326 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x579b326)\r\n#13 0x0000555967f872a1 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c852a1)\r\n#14 0x0000555965ae2ae6 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x17e0ae6)\r\n#15 0x0000555967f85bed llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c83bed)\r\n#16 0x0000555965ae19e6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x17df9e6)\r\n#17 0x0000555967f83cf1 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c81cf1)\r\n#18 0x00005559688a0c29 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#19 0x00005559688a3d83 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x45a1d83)\r\n#20 0x0000555968f440fa clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4c420fa)\r\n#21 0x000055596ad8938c clang::ParseAST(clang::Sema&, bool, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x6a8738c)\r\n#22 0x0000555968f44598 clang::CodeGenAction::ExecuteAction() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4c42598)\r\n#23 0x00005559691dec59 clang::FrontendAction::Execute() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4edcc59)\r\n#24 0x00005559691603be clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4e5e3be)\r\n#25 0x00005559692cb886 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4fc9886)\r\n#26 0x00005559656b5dd5 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13b3dd5)\r\n#27 0x00005559656aee7a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#28 0x00005559656b284e clang_main(int, char**, llvm::ToolContext const&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13b084e)\r\n#29 0x00005559655a31bb main (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x12a11bb)\r\n#30 0x00007f038098e083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3\r\n#31 0x00005559656ae90e _start (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13ac90e)\r\nclangtk: error: unable to execute command: Aborted\r\nclangtk: error: clang frontend command failed due to signal (use -v to see invocation)\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git 410f751144e8b2e9574f03e0d0fb8560fe3cb797)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nclangtk: note: diagnostic msg: \r\n********************\r\n\r\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\r\nPreprocessed source(s) and associated run script(s) are located at:\r\nclangtk: note: diagnostic msg: /tmp/small-1b0f28.c\r\nclangtk: note: diagnostic msg: /tmp/small-1b0f28.sh\r\nclangtk: note: diagnostic msg: \r\n\r\n********************\r\n[521] % \r\n[521] % cat small.c\r\nchar a;\r\nint b, *c = &b, d[3], e;\r\nint main() {\r\n int f, g[3] = {0,0,0};\r\n g[e] = *c = 0;\r\n for (; *c < 3; (*c)++) {\r\n f = a ? b % a : 0;\r\n g[2] &= d[*c] & f;\r\n }\r\n return 0;\r\n}\r\n```\r\n\r\n```\r\n[537] % clangtk -O3 small.c\r\nclang-20: /local/suz-local/software/clangbuild/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7288: llvm::VectorizationFactor llvm::LoopVectorizationPlanner::computeBestVF(): Assertion `BestFactor.Width == LegacyVF.Width && \" VPlan cost model and legacy cost model disagreed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0.\tProgram arguments: /local/suz-local/software/local/clang-trunk/bin/clang-20 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/WAIT/20240814-clangtk-m64-O3-build-085604/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/WAIT/20240814-clangtk-m64-O3-build-085604/delta -resource-dir /local/suz-local/software/local/clang-trunk/lib/clang/20 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/suz-local/software/local/clang-trunk/lib/clang/20/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-83d1cf.o -x c small.c\r\n1.\t<eof> parser at end of file\r\n2.\tOptimizer\r\n3.\tRunning pass \"function<eager-inv>(float2int,lower-constant-intrinsics,chr,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-unroll<O3>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"small.c\"\r\n4.\tRunning pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"main\"\r\n #0 0x0000558427a123ef llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x42ea3ef)\r\n #1 0x0000558427a0f934 SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007fa32f70a420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)\r\n #3 0x00007fa32f14100b raise /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1\r\n #4 0x00007fa32f120859 abort /build/glibc-LcI20x/glibc-2.31/stdlib/abort.c:81:7\r\n #5 0x00007fa32f120729 get_sysdep_segment_value /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:509:8\r\n #6 0x00007fa32f120729 _nl_load_domain /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:970:34\r\n #7 0x00007fa32f131fd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)\r\n #8 0x000055842931a948 llvm::LoopVectorizationPlanner::computeBestVF() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5bf2948)\r\n #9 0x00005584293359ea llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c0d9ea)\r\n#10 0x0000558429338691 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c10691)\r\n#11 0x0000558429338d43 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c10d43)\r\n#12 0x0000558428ec3326 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x579b326)\r\n#13 0x00005584273ad2a1 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c852a1)\r\n#14 0x0000558424f08ae6 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x17e0ae6)\r\n#15 0x00005584273abbed llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c83bed)\r\n#16 0x0000558424f079e6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x17df9e6)\r\n#17 0x00005584273a9cf1 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c81cf1)\r\n#18 0x0000558427cc6c29 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#19 0x0000558427cc9d83 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x45a1d83)\r\n#20 0x000055842836a0fa clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4c420fa)\r\n#21 0x000055842a1af38c clang::ParseAST(clang::Sema&, bool, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x6a8738c)\r\n#22 0x000055842836a598 clang::CodeGenAction::ExecuteAction() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4c42598)\r\n#23 0x0000558428604c59 clang::FrontendAction::Execute() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4edcc59)\r\n#24 0x00005584285863be clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4e5e3be)\r\n#25 0x00005584286f1886 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4fc9886)\r\n#26 0x0000558424adbdd5 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13b3dd5)\r\n#27 0x0000558424ad4e7a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#28 0x0000558424ad884e clang_main(int, char**, llvm::ToolContext const&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13b084e)\r\n#29 0x00005584249c91bb main (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x12a11bb)\r\n#30 0x00007fa32f122083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3\r\n#31 0x0000558424ad490e _start (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13ac90e)\r\nclangtk: error: unable to execute command: Aborted\r\nclangtk: error: clang frontend command failed due to signal (use -v to see invocation)\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git 410f751144e8b2e9574f03e0d0fb8560fe3cb797)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nclangtk: note: diagnostic msg: \r\n********************\r\n\r\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\r\nPreprocessed source(s) and associated run script(s) are located at:\r\nclangtk: note: diagnostic msg: /tmp/small-aeee73.c\r\nclangtk: note: diagnostic msg: /tmp/small-aeee73.sh\r\nclangtk: note: diagnostic msg: \r\n\r\n********************\r\n[538] % \r\n[538] % cat small.c\r\nint a[1], *d, e, f[1];\r\nstatic int b, c, *volatile g = &c;\r\nvoid h(int i) { b = b >> 1 ^ a[b ^ i & 1]; }\r\nvoid j(long i) {\r\n b = b >> 1 ^ b;\r\n b = b >> 1 ^ a[b ^ 1];\r\n h(i >> 1);\r\n h(i >> 3);\r\n h(i >> 2);\r\n h(i >> 4);\r\n h(i >> 5);\r\n}\r\nstatic void m() {\r\n int l;\r\n while (e) {\r\n c = 0;\r\n for (; c < 5; c++) {\r\n l = 0;\r\n for (; l < 7; l++)\r\n if (*d)\r\n j(f[c * l]);\r\n }\r\n }\r\n}\r\nint main() {\r\n if (e) {\r\n m();\r\n g;\r\n }\r\n return 0;\r\n}\r\n```\r\n" }, { "author": "fhahn", "body": "@zhendongsu thanks for the report, it was the same issue as the test case @sjoerdmeijer shared at https://github.com/llvm/llvm-project/issues/100591, which was a different underlying issue to the one for this issue.\r\n\r\nBoth should be fixed now, please let me know if you find any other instances of this triggering." }, { "author": "zhendongsu", "body": "Hi @fhahn, here is another related instance that still triggers:\r\n```\r\n[512] % clangtk -v\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git f22b1da8791edd557ce34c87190e329df2e1c892)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9\r\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nCandidate multilib: .;@m64\r\nSelected multilib: .;@m64\r\n[513] % \r\n[513] % clangtk -Os small.c\r\nclang-20: /local/suz-local/software/clangbuild/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7359: llvm::VectorizationFactor llvm::LoopVectorizationPlanner::computeBestVF(): Assertion `(BestFactor.Width == LegacyVF.Width || planContainsAdditionalSimplifications(getPlanFor(BestFactor.Width), BestFactor.Width, CostCtx, OrigLoop, CM)) && \" VPlan cost model and legacy cost model disagreed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0.\tProgram arguments: /local/suz-local/software/local/clang-trunk/bin/clang-20 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/20240825-clangtk-m64-Os-Wall-Wextra-pipe-fPIC-build-043108/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/20240825-clangtk-m64-Os-Wall-Wextra-pipe-fPIC-build-043108/delta -resource-dir /local/suz-local/software/local/clang-trunk/lib/clang/20 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/suz-local/software/local/clang-trunk/lib/clang/20/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Os -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-d7ba19.o -x c small.c\r\n1.\t<eof> parser at end of file\r\n2.\tOptimizer\r\n3.\tRunning pass \"function<eager-inv>(float2int,lower-constant-intrinsics,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-unroll<O2>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"small.c\"\r\n4.\tRunning pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"main\"\r\n #0 0x0000564ef7a4babf llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x42ddabf)\r\n #1 0x0000564ef7a49004 SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007f89634f9420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)\r\n #3 0x00007f8962f3000b raise /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1\r\n #4 0x00007f8962f0f859 abort /build/glibc-LcI20x/glibc-2.31/stdlib/abort.c:81:7\r\n #5 0x00007f8962f0f729 get_sysdep_segment_value /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:509:8\r\n #6 0x00007f8962f0f729 _nl_load_domain /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:970:34\r\n #7 0x00007f8962f20fd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)\r\n #8 0x0000564ef9358b42 llvm::LoopVectorizationPlanner::computeBestVF() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5beab42)\r\n #9 0x0000564ef937504a llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c0704a)\r\n#10 0x0000564ef9377c81 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c09c81)\r\n#11 0x0000564ef9378333 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c0a333)\r\n#12 0x0000564ef8f026e6 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x57946e6)\r\n#13 0x0000564ef73e68d1 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c788d1)\r\n#14 0x0000564ef4f4ff46 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x17e1f46)\r\n#15 0x0000564ef73e521d llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c7721d)\r\n#16 0x0000564ef4f4ee46 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x17e0e46)\r\n#17 0x0000564ef73e3321 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c75321)\r\n#18 0x0000564ef7d04bb1 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#19 0x0000564ef7d07d73 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4599d73)\r\n#20 0x0000564ef83a840c clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4c3a40c)\r\n#21 0x0000564efa1f004c clang::ParseAST(clang::Sema&, bool, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x6a8204c)\r\n#22 0x0000564ef83a8828 clang::CodeGenAction::ExecuteAction() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4c3a828)\r\n#23 0x0000564ef8643cb9 clang::FrontendAction::Execute() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4ed5cb9)\r\n#24 0x0000564ef85c543e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4e5743e)\r\n#25 0x0000564ef8730876 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4fc2876)\r\n#26 0x0000564ef4b21e55 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13b3e55)\r\n#27 0x0000564ef4b1aefa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#28 0x0000564ef4b1e8ce clang_main(int, char**, llvm::ToolContext const&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13b08ce)\r\n#29 0x0000564ef4a0f1bb main (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x12a11bb)\r\n#30 0x00007f8962f11083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3\r\n#31 0x0000564ef4b1a98e _start (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13ac98e)\r\nclangtk: error: unable to execute command: Aborted\r\nclangtk: error: clang frontend command failed due to signal (use -v to see invocation)\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git f22b1da8791edd557ce34c87190e329df2e1c892)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nclangtk: note: diagnostic msg: \r\n********************\r\n\r\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\r\nPreprocessed source(s) and associated run script(s) are located at:\r\nclangtk: note: diagnostic msg: /tmp/small-6fc973.c\r\nclangtk: note: diagnostic msg: /tmp/small-6fc973.sh\r\nclangtk: note: diagnostic msg: \r\n\r\n********************\r\n[514] % \r\n[514] % cat small.c\r\nint a, d;\r\nstatic int b = 1, c;\r\nvoid e() {\r\n while (a)\r\n b--;\r\n}\r\nint main() {\r\n for (d = 0; d < 3; d++)\r\n if (a)\r\n for (c = 0; c < 2; c++)\r\n if (b)\r\n break;\r\n return 0;\r\n}\r\n```\r\n\r\nCompiler Explorer: https://godbolt.org/z/zanjboPYo" }, { "author": "zhendongsu", "body": "Hi @fhahn, another reproducer that triggers at -O{s,2,3}:\r\n```\r\n[520] % clangtk -v\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git 7e6b1504c7cf6976ac8e9012c4513ffa258bd8eb)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9\r\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nCandidate multilib: .;@m64\r\nSelected multilib: .;@m64\r\n[521] % \r\n[521] % clangtk -O3 small.c\r\nclang-20: /local/suz-local/software/clangbuild/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7359: llvm::VectorizationFactor llvm::LoopVectorizationPlanner::computeBestVF(): Assertion `(BestFactor.Width == LegacyVF.Width || planContainsAdditionalSimplifications(getPlanFor(BestFactor.Width), BestFactor.Width, CostCtx, OrigLoop, CM)) && \" VPlan cost model and legacy cost model disagreed\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0.\tProgram arguments: /local/suz-local/software/local/clang-trunk/bin/clang-20 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/20240826-clangtk-m64-Os-build-191303/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/20240826-clangtk-m64-Os-build-191303/delta -resource-dir /local/suz-local/software/local/clang-trunk/lib/clang/20 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/suz-local/software/local/clang-trunk/lib/clang/20/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-bd6e8d.o -x c small.c\r\n1.\t<eof> parser at end of file\r\n2.\tOptimizer\r\n3.\tRunning pass \"function<eager-inv>(float2int,lower-constant-intrinsics,chr,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-unroll<O3>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"small.c\"\r\n4.\tRunning pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"main\"\r\n #0 0x0000561e24237f5f llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x42f4f5f)\r\n #1 0x0000561e242354a4 SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007f7461dc8420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)\r\n #3 0x00007f74617ff00b raise /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1\r\n #4 0x00007f74617de859 abort /build/glibc-LcI20x/glibc-2.31/stdlib/abort.c:81:7\r\n #5 0x00007f74617de729 get_sysdep_segment_value /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:509:8\r\n #6 0x00007f74617de729 _nl_load_domain /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:970:34\r\n #7 0x00007f74617effd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)\r\n #8 0x0000561e25b45232 llvm::LoopVectorizationPlanner::computeBestVF() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c02232)\r\n #9 0x0000561e25b616ca llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c1e6ca)\r\n#10 0x0000561e25b64301 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c21301)\r\n#11 0x0000561e25b649b3 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5c219b3)\r\n#12 0x0000561e256ef0a6 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x57ac0a6)\r\n#13 0x0000561e23bd2da1 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c8fda1)\r\n#14 0x0000561e21724f86 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x17e1f86)\r\n#15 0x0000561e23bd16ed llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c8e6ed)\r\n#16 0x0000561e21723e86 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x17e0e86)\r\n#17 0x0000561e23bcf7f1 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3c8c7f1)\r\n#18 0x0000561e244f0f41 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#19 0x0000561e244f4103 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x45b1103)\r\n#20 0x0000561e24b9480c clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4c5180c)\r\n#21 0x0000561e269dcc5c clang::ParseAST(clang::Sema&, bool, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x6a99c5c)\r\n#22 0x0000561e24b94c28 clang::CodeGenAction::ExecuteAction() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4c51c28)\r\n#23 0x0000561e24e30189 clang::FrontendAction::Execute() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4eed189)\r\n#24 0x0000561e24db162e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4e6e62e)\r\n#25 0x0000561e24f1cde6 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4fd9de6)\r\n#26 0x0000561e212f6ed5 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13b3ed5)\r\n#27 0x0000561e212eff7a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#28 0x0000561e212f394e clang_main(int, char**, llvm::ToolContext const&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13b094e)\r\n#29 0x0000561e211e41eb main (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x12a11eb)\r\n#30 0x00007f74617e0083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3\r\n#31 0x0000561e212efa0e _start (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x13aca0e)\r\nclangtk: error: unable to execute command: Aborted\r\nclangtk: error: clang frontend command failed due to signal (use -v to see invocation)\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git 7e6b1504c7cf6976ac8e9012c4513ffa258bd8eb)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nclangtk: note: diagnostic msg: \r\n********************\r\n\r\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\r\nPreprocessed source(s) and associated run script(s) are located at:\r\nclangtk: note: diagnostic msg: /tmp/small-796071.c\r\nclangtk: note: diagnostic msg: /tmp/small-796071.sh\r\nclangtk: note: diagnostic msg: \r\n\r\n********************\r\n[522] % \r\n[522] % cat small.c\r\nchar a;\r\nstatic char b, *c = &b, **d = &c;\r\nint e;\r\nunsigned f;\r\nchar g(int h) { return a << h; }\r\nint main() {\r\n char ***i[2] = {&d, &d};\r\n int *j;\r\n for (; f < 3; f++) {\r\n j = &e;\r\n *j = g(**d);\r\n }\r\n return 0;\r\n}\r\n```\r\n\r\nCompiler Explorer: https://godbolt.org/z/7Y5PzTx4P" } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "b558ac0eef57a3737b1e27844115fa91e0b32582", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": [ [ 545, 554 ] ], "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": [ [ 91, 98 ], [ 124, 173 ], [ 1105, 1117 ], [ 1119, 1131 ] ], "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": 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"llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": [ "InstCombinerImpl::SimplifyDemandedBits", "InstCombinerImpl::SimplifyDemandedUseBits" ], "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, 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"llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, 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[ { "file": "llvm/test/Transforms/InstCombine/assume-inseltpoison.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "PR40940", "test_body": "target datalayout = \"e-m:e-i64:64-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\ndeclare void @llvm.assume(i1 noundef) #0\n\ndefine i32 @PR40940(<4 x i8> %x) {\n %shuf = shufflevector <4 x i8> %x, <4 x i8> poison, <4 x i32> <i32 1, i32 1, i32 2, i32 3>\n %t2 = bitcast <4 x i8> %shuf to i32\n %t3 = icmp ult i32 %t2, 65536\n call void @llvm.assume(i1 %t3)\n ret i32 %t2\n}\n\nattributes #0 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/InstCombine/assume.ll", "commands": [ "opt < %s -passes=instcombine -S", "opt < %s -passes=instcombine --enable-knowledge-retention -S", "opt < %s -passes=instcombine -S --try-experimental-debuginfo-iterators", "opt < %s -passes=instcombine --enable-knowledge-retention -S --try-experimental-debuginfo-iterators" ], "tests": [ { "test_name": "PR40940", "test_body": "target datalayout = \"e-m:e-i64:64-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\ndeclare void @llvm.assume(i1 noundef) #0\n\ndefine i32 @PR40940(<4 x i8> %x) {\n %shuf = shufflevector <4 x i8> %x, <4 x i8> undef, <4 x i32> <i32 1, i32 1, i32 2, i32 3>\n %t2 = bitcast <4 x i8> %shuf to i32\n %t3 = icmp ult i32 %t2, 65536\n call void @llvm.assume(i1 %t3)\n ret i32 %t2\n}\n\nattributes #0 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }\n\n!llvm.dbg.cu = !{}\n!llvm.module.flags = !{!0, !1, !2, !3}\n\n!0 = !{i32 2, !\"Dwarf Version\", i32 4}\n!1 = !{i32 2, !\"Debug Info Version\", i32 3}\n!2 = !{i32 1, !\"wchar_size\", i32 4}\n!3 = !{i32 8, !\"PIC Level\", i32 2}\n", "additional_args": null, "lli_expected_out": null } ] }, { "file": "llvm/test/Transforms/InstCombine/known-bits.ll", "commands": [ "opt -S -passes=instcombine < %s" ], "tests": [ { "test_name": "simplifydemanded_context", "test_body": "define i8 @simplifydemanded_context(i8 %x, i8 %y) {\n %and1 = and i8 %x, 1\n call void @dummy()\n %x.lobits = and i8 %x, 3\n %precond = icmp eq i8 %x.lobits, 0\n call void @llvm.assume(i1 %precond)\n %and2 = and i8 %and1, %y\n ret i8 %and2\n}\n\ndeclare void @dummy()\n\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\ndeclare void @llvm.assume(i1 noundef) #0\n\nattributes #0 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "pr97330", "test_body": "define i16 @pr97330(i1 %c, ptr %p1, ptr %p2) {\nentry:\n %v = load i64, ptr %p1, align 8\n %conv = trunc i64 %v to i16\n br i1 %c, label %exit, label %if\n\nif: ; preds = %entry\n %cmp = icmp ne i16 %conv, 1\n %conv2 = zext i1 %cmp to i32\n store i32 %conv2, ptr %p2, align 4\n %cmp2 = icmp eq i64 %v, 1\n call void @llvm.assume(i1 %cmp2)\n unreachable\n\nexit: ; preds = %entry\n ret i16 %conv\n}\n\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\ndeclare void @llvm.assume(i1 noundef) #0\n\nattributes #0 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] Miscompilation with llvm.assume in unreachable blocks", "body": "Reproducer: https://alive2.llvm.org/ce/z/zKvpXV\r\n```\r\n; bin/opt -passes=instcombine reduced.ll -S\r\ndefine i16 @src(i16 %g, ptr %e, ptr %d) {\r\nentry:\r\n %0 = load i64, ptr %d, align 8\r\n %conv = trunc i64 %0 to i16\r\n %tobool.not.i = icmp eq i16 %g, 0\r\n br i1 %tobool.not.i, label %i.exit, label %for.cond.preheader.i\r\n\r\nfor.cond.preheader.i:\r\n %cmp5.i = icmp ne i16 %g, %conv\r\n %conv6.i = zext i1 %cmp5.i to i32\r\n store i32 %conv6.i, ptr %e, align 4\r\n %cmp7.i = icmp eq i64 %0, 1\r\n call void @llvm.assume(i1 %cmp7.i)\r\n unreachable\r\n\r\ni.exit:\r\n ret i16 %conv\r\n}\r\n```\r\n```\r\ndefine i16 @tgt(i16 %g, ptr %e, ptr %d) {\r\nentry:\r\n %tobool.not.i = icmp eq i16 %g, 0\r\n br i1 %tobool.not.i, label %i.exit, label %for.cond.preheader.i\r\n\r\nfor.cond.preheader.i: ; preds = %entry\r\n unreachable\r\n\r\ni.exit: ; preds = %entry\r\n ret i16 1\r\n}\r\n```\r\n\r\nllvm version: a8e1c3e1239604ac787b6a2d39b5278ddec8aa8a\r\n\r\ncc @nikic", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [ { "author": "dtcxzyw", "body": "Reverting https://github.com/llvm/llvm-project/commit/11484cb817bcc2a6e2ef9572be982a1a5a4964ec fixes this issue.\r\n" }, { "author": "nikic", "body": "I've applied two fixes for this. https://github.com/llvm/llvm-project/commit/86b37944a70229b07626e63bdb9a46b4bc3d1460 tries to stick closer to the current logic, while https://github.com/llvm/llvm-project/commit/05670b42f5b45710bfdba48dcb7e8c30c8c7478f is a more thorough fix on top of that." }, { "author": "dtcxzyw", "body": "Confirmed that the original case has been fixed. Thank you!\r\n" }, { "author": "chapuni", "body": "@nikic Fixed, thanks!" } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "d2a26a7bd5fc7cc5752337b7f4f999642feb37dc", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": [ [ 1870, 1883 ] ], "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, 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null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/vec_demanded_elts.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "common_binop_demand_via_extelt_op0_mismatch_elt1", "test_body": "target datalayout = \"e-m:e-i64:64-f80:128-n8:16:32:64-S128\"\n\ndeclare void @use(<2 x i4>)\n\ndefine i4 @common_binop_demand_via_extelt_op0_mismatch_elt1(<2 x i4> %x, <2 x i4> %y) {\n %xshuf = shufflevector <2 x i4> %x, <2 x i4> poison, <2 x i32> zeroinitializer\n %b_xshuf_y = sub <2 x i4> %xshuf, %y\n %b_xy = sub nsw <2 x i4> %x, %y\n %b_xy0 = extractelement <2 x i4> %b_xy, i32 1\n call void @use(<2 x i4> %b_xshuf_y)\n ret i4 %b_xy0\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "common_binop_demand_via_splat_mask_poison", "test_body": "target datalayout = \"e-m:e-i64:64-f80:128-n8:16:32:64-S128\"\n\ndefine <2 x i8> @common_binop_demand_via_splat_mask_poison(<2 x i8> %x, <2 x i8> %y) {\n %ysplat = shufflevector <2 x i8> %y, <2 x i8> poison, <2 x i32> <i32 0, i32 poison>\n %vv = add <2 x i8> %x, %ysplat\n %m = add <2 x i8> %x, %y\n %msplat = shufflevector <2 x i8> %m, <2 x i8> poison, <2 x i32> zeroinitializer\n %res = add <2 x i8> %vv, %msplat\n ret <2 x i8> %res\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "common_binop_demand_via_splat_mask_poison_2", "test_body": "target datalayout = \"e-m:e-i64:64-f80:128-n8:16:32:64-S128\"\n\ndefine <2 x i8> @common_binop_demand_via_splat_mask_poison_2(<2 x i8> %x, <2 x i8> %y) {\n %ysplat = shufflevector <2 x i8> %y, <2 x i8> poison, <2 x i32> <i32 poison, i32 0>\n %vv = add <2 x i8> %x, %ysplat\n %m = add <2 x i8> %x, %y\n %msplat = shufflevector <2 x i8> %m, <2 x i8> %y, <2 x i32> <i32 0, i32 2>\n %res = add <2 x i8> %vv, %msplat\n ret <2 x i8> %res\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "common_binop_demand_via_splat_mask_poison_3", "test_body": "target datalayout = \"e-m:e-i64:64-f80:128-n8:16:32:64-S128\"\n\ndefine <2 x i8> @common_binop_demand_via_splat_mask_poison_3(<2 x i8> %x, <2 x i8> %y) {\n %ysplat = shufflevector <2 x i8> %y, <2 x i8> poison, <2 x i32> <i32 poison, i32 0>\n %vv = add <2 x i8> %x, %ysplat\n %m = add <2 x i8> %x, %y\n %msplat = shufflevector <2 x i8> %m, <2 x i8> poison, <2 x i32> zeroinitializer\n %res = add <2 x i8> %vv, %msplat\n ret <2 x i8> %res\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] Replacement of binop with binop-of-shuffle incorrectly adds extra poison value", "body": "The following IR is a minimal repro when run with `opt -passes=instcombine`:\r\n```llvm\r\ndefine i8 @src(<2 x i8> %x, <2 x i8> %y) {\r\n %xsplat = shufflevector <2 x i8> %x, <2 x i8> poison, <2 x i32> <i32 1, i32 0>\r\n %vv = mul <2 x i8> %xsplat, %y\r\n %m = mul <2 x i8> %x, %y ; <<<< Note that %m is later replaced with %vv in the output\r\n %msplat = shufflevector <2 x i8> %m, <2 x i8> poison, <2 x i32> <i32 0, i32 0>\r\n %res = add <2 x i8> %vv, %msplat\r\n %vget_lane = extractelement <2 x i8> %res, i64 1\r\n ret i8 %vget_lane\r\n}\r\n```\r\nWhich on 17.x or trunk will give:\r\n```llvm\r\ndefine i8 @src(<2 x i8> %x, <2 x i8> %y) {\r\n %xsplat = shufflevector <2 x i8> %x, <2 x i8> poison, <2 x i32> <i32 poison, i32 0>\r\n %vv = mul <2 x i8> %xsplat, %y\r\n %msplat = shufflevector <2 x i8> %vv, <2 x i8> poison, <2 x i32> <i32 poison, i32 0>\r\n %res = add <2 x i8> %vv, %msplat\r\n %vget_lane = extractelement <2 x i8> %res, i64 1\r\n ret i8 %vget_lane\r\n}\r\n```\r\nHowever, this is not correct, because the added poisoned values end up observed in the final output. First, in InstCombine, the first element in each mask for the shuffles are first replaced with `poison` due to not being observed in the final `extractelement`. After that we run into this code in `InstCombineSimplifyDemanded.cpp`:\r\nhttps://github.com/llvm/llvm-project/blob/d8278b682386f51dfba204849c624672a3df40c7/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp#L1866-L1880\r\n\r\nThis is what replaces the `mul <2 x i8> %x, %y` with `mul <2 x i8> %xsplat, %y` (`m_ZeroMask` also matches poison). However in doing so, it introduces the extra poison from `%xsplat`, meaning that `%msplat` has both its elements poisoned, which ends up propagating to `%vget_lane`.\r\n\r\nHere is a Godbolt link showing the test case on 16.x, 17.x, and trunk:\r\nhttps://godbolt.org/z/5eeT7x4s3\r\n\r\nAnd also an Alive2 example showing the bad transformation with a counter-example:\r\nhttps://alive2.llvm.org/ce/z/RpBJEN\r\n\r\nThe code was first introduced in 3b090ff2bdb2828b53d6fec9c06b9d52fed09f42, which a bisect shows is when this first started repro'ing\r\n\r\nI have verified that this still repros on latest trunk, 2de269a641e4ffbb7a44e559c4c0a91bb66df823\r\n\r\nFor priority/triage: this bug was found by a fuzzer meant to test SIMD codegen. It was not from manually written code", "author": "Benjins", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [ { "author": "Benjins", "body": "A slightly smaller test case:\r\nhttps://alive2.llvm.org/ce/z/6AMPWC\r\n```llvm\r\ndefine <2 x i8> @src(<2 x i8> %x, <2 x i8> %y) {\r\n %xsplat = shufflevector <2 x i8> %x, <2 x i8> poison, <2 x i32> <i32 poison, i32 0>\r\n %vv = mul <2 x i8> %xsplat, %y\r\n %m = mul <2 x i8> %x, %y\r\n %msplat = shufflevector <2 x i8> %m, <2 x i8> poison, <2 x i32> <i32 poison, i32 0>\r\n %res = add <2 x i8> %vv, %msplat\r\n ret <2 x i8> %res\r\n}\r\n```\r\nThis doesn't extract the vector, and instead manually specifies the poisonous elements in the shuffles. As Alive notes, the output for `src(<0, 0>, <0, 0>)` goes from `<poison, 0>` to `<poison, poison>`" } ] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "e7080fd735d02590cdce1bef97a7f64a34145b15", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 16127, 16137 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::vectorizeTree" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/external-reduced-value-vectorized.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu < %s" ], "tests": [ { "test_name": "test", "test_body": "define i32 @test(ptr %c, i16 %a, i16 %0) {\nentry:\n %tobool = icmp ne i16 %a, 0\n %1 = zext i1 %tobool to i16\n %cmp3 = icmp ugt i16 %0, %1\n %2 = and i1 %tobool, %cmp3\n %tobool.1 = icmp ne i16 %a, 0\n %3 = zext i1 %tobool.1 to i16\n %cmp3.1 = icmp ugt i16 %0, %3\n %4 = and i1 %tobool.1, %cmp3.1\n %5 = select i1 %2, i1 %4, i1 false\n %tobool.2 = icmp ne i16 %a, 0\n %6 = zext i1 %tobool.2 to i16\n %cmp3.2 = icmp ugt i16 %0, %6\n %7 = and i1 %tobool.2, %cmp3.2\n %8 = select i1 %5, i1 %7, i1 false\n %tobool.3 = icmp ne i16 %a, 0\n %9 = zext i1 %tobool.3 to i16\n %cmp3.3 = icmp ugt i16 %a, %9\n %10 = icmp ult i16 %a, -2\n %11 = and i1 %10, %cmp3.3\n %12 = select i1 %8, i1 %11, i1 false\n %13 = zext i1 %12 to i32\n store i32 %13, ptr %c, align 4\n ret i32 0\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "clang crashes on valid code at -O{2,3} on x86_64-linux-gnu: Assertion `(I->use_empty() || all_of(I->uses(), [&](Use &U) { return isDeleted( cast<Instruction>(U.getUser())); })) && \"trying to erase instruction with users.\"' failed ", "body": "It appears to be a recent regression as it doesn't reproduce with 19.1.0 and earlier.\r\n\r\nCompiler Explorer: https://godbolt.org/z/5Tca1zsE8\r\n\r\n```\r\n[507] % clangtk -v\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git fdc78120bde1426b223196bec645b6f27fc60f0e)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9\r\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nCandidate multilib: .;@m64\r\nSelected multilib: .;@m64\r\n[508] % \r\n[508] % clangtk -O2 small.c\r\nclang-20: /local/suz-local/software/clangbuild/llvm-project/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:2748: void llvm::slpvectorizer::BoUpSLP::removeInstructionsAndOperands(llvm::ArrayRef<U*>) [with T = llvm::Instruction]: Assertion `(I->use_empty() || all_of(I->uses(), [&](Use &U) { return isDeleted( cast<Instruction>(U.getUser())); })) && \"trying to erase instruction with users.\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0.\tProgram arguments: /local/suz-local/software/local/clang-trunk/bin/clang-20 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/20241031-clangtk-m64-O3-build-070121/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/20241031-clangtk-m64-O3-build-070121/delta -resource-dir /local/suz-local/software/local/clang-trunk/lib/clang/20 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/suz-local/software/local/clang-trunk/lib/clang/20/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-2a4e26.o -x c small.c\r\n1.\t<eof> parser at end of file\r\n2.\tOptimizer\r\n3.\tRunning pass \"function<eager-inv>(float2int,lower-constant-intrinsics,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-verify-fixpoint>,loop-unroll<O2>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"small.c\"\r\n4.\tRunning pass \"slp-vectorizer\" on function \"main\"\r\n #0 0x000055e84bc23a6f llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4428a6f)\r\n #1 0x000055e84bc21274 SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007efe85a5c420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)\r\n #3 0x00007efe8549300b raise /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1\r\n #4 0x00007efe85472859 abort /build/glibc-LcI20x/glibc-2.31/stdlib/abort.c:81:7\r\n #5 0x00007efe85472729 get_sysdep_segment_value /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:509:8\r\n #6 0x00007efe85472729 _nl_load_domain /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:970:34\r\n #7 0x00007efe85483fd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)\r\n #8 0x000055e84d68990f void llvm::slpvectorizer::BoUpSLP::removeInstructionsAndOperands<llvm::Instruction>(llvm::ArrayRef<llvm::Instruction*>) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5e8e90f)\r\n #9 0x000055e84d6e6d28 llvm::slpvectorizer::BoUpSLP::vectorizeTree(llvm::SmallDenseSet<llvm::Value*, 4u, llvm::DenseMapInfo<llvm::Value*, void>> const&, llvm::Instruction*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5eebd28)\r\n#10 0x000055e84d6f8d01 (anonymous namespace)::HorizontalReduction::tryToReduce(llvm::slpvectorizer::BoUpSLP&, llvm::DataLayout const&, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo const&) SLPVectorizer.cpp:0:0\r\n#11 0x000055e84d6fbb89 llvm::SLPVectorizerPass::vectorizeHorReduction(llvm::PHINode*, llvm::Instruction*, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&, llvm::SmallVectorImpl<llvm::WeakTrackingVH>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5f00b89)\r\n#12 0x000055e84d7004ab llvm::SLPVectorizerPass::vectorizeRootInstruction(llvm::PHINode*, llvm::Instruction*, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (.constprop.0) SLPVectorizer.cpp:0:0\r\n#13 0x000055e84d704d60 llvm::SLPVectorizerPass::vectorizeChainsInBlock(llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5f09d60)\r\n#14 0x000055e84d70b5a0 llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0\r\n#15 0x000055e84d70c273 llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5f11273)\r\n#16 0x000055e84d17e016 llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5983016)\r\n#17 0x000055e84b5aa8b1 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3daf8b1)\r\n#18 0x000055e84909b826 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x18a0826)\r\n#19 0x000055e84b5a921d llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3dae21d)\r\n#20 0x000055e84909a226 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x189f226)\r\n#21 0x000055e84b5a8c51 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3dadc51)\r\n#22 0x000055e84bedd2d3 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#23 0x000055e84bee0aca clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x46e5aca)\r\n#24 0x000055e84c5df37c clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4de437c)\r\n#25 0x000055e84e4e0fac clang::ParseAST(clang::Sema&, bool, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x6ce5fac)\r\n#26 0x000055e84c5df798 clang::CodeGenAction::ExecuteAction() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4de4798)\r\n#27 0x000055e84c8a7649 clang::FrontendAction::Execute() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x50ac649)\r\n#28 0x000055e84c823e7e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5028e7e)\r\n#29 0x000055e84c993f46 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5198f46)\r\n#30 0x000055e848c544f5 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x14594f5)\r\n#31 0x000055e848c4c01a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#32 0x000055e848c4ffd7 clang_main(int, char**, llvm::ToolContext const&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x1454fd7)\r\n#33 0x000055e848b3a78b main (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x133f78b)\r\n#34 0x00007efe85474083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3\r\n#35 0x000055e848c4baae _start (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x1450aae)\r\nclangtk: error: unable to execute command: Aborted\r\nclangtk: error: clang frontend command failed due to signal (use -v to see invocation)\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git fdc78120bde1426b223196bec645b6f27fc60f0e)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nclangtk: note: diagnostic msg: \r\n********************\r\n\r\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\r\nPreprocessed source(s) and associated run script(s) are located at:\r\nclangtk: note: diagnostic msg: /tmp/small-8056bb.c\r\nclangtk: note: diagnostic msg: /tmp/small-8056bb.sh\r\nclangtk: note: diagnostic msg: \r\n\r\n********************\r\n[509] % \r\n[509] % cat small.c\r\nshort a;\r\nint b, d;\r\nunsigned short c;\r\nint main() {\r\n b = 0;\r\n for (; b < 5; b++) {\r\n a--;\r\n d |= (3 - (((!a) < 1) < c && a)) & c;\r\n }\r\n return 0;\r\n}\r\n```\r\n\r\n", "author": "zhendongsu", "labels": [ "llvm:SLPVectorizer", "crash-on-valid" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "2601d6f189cf1d4e4e77a7cba83e5d32c87bf079", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 14049, 14060 ], [ 14080, 14090 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::vectorizeTree" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/extractelement-phi-in-landingpad.ll", "commands": [ "opt -S --passes=slp-vectorizer -slp-threshold=-99999 -mtriple=x86_64-unknown-linux-gnu < %s" ], "tests": [ { "test_name": "test", "test_body": "define void @test() personality ptr null {\nbb:\n invoke void null()\n to label %bb65 unwind label %bb4\n\nbb2: ; No predecessors!\n invoke void null()\n to label %bb65 unwind label %bb4\n\nbb4: ; preds = %bb2, %bb\n %phi5 = phi i32 [ 0, %bb ], [ 0, %bb2 ]\n %phi6 = phi i32 [ 0, %bb ], [ 0, %bb2 ]\n %landingpad = landingpad { ptr, i32 }\n cleanup\n call void null(i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5, i32 %phi5)\n ret void\n\nbb65: ; preds = %bb2, %bb\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "LLVM ERROR: Broken module found, compilation aborted!", "body": "To reproduce run opt with \r\n[Test.ll.tgz](https://github.com/user-attachments/files/16513795/Test.ll.tgz)\r\nusing `-passes slp-vectorizer -slp-threshold=-99999` \r\n\r\nReproducer https://godbolt.org/z/f4szGsMYd\r\n\r\n```\r\nThe unwind destination does not have an exception handling instruction!\r\n %invoke = invoke i64 null(ptr addrspace(1) null, i32 0, i64 0, i32 0)\r\n to label %bb65 unwind label %bb4\r\nThe unwind destination does not have an exception handling instruction!\r\n %invoke3 = invoke i64 null(ptr addrspace(1) null, i32 0, i64 0, i32 0)\r\n to label %bb65 unwind label %bb4\r\nLandingPadInst not the first non-PHI instruction in the block.\r\n %landingpad = landingpad { ptr, i32 }\r\n cleanup\r\nLLVM ERROR: Broken module found, compilation aborted!\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes slp-vectorizer -slp-threshold=-99999 <source>\r\n1.\tRunning pass \"verify\" on module \"<source>\"\r\n #0 0x0000000004f1d2d8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4f1d2d8)\r\n #1 0x0000000004f1aa4c SignalHandler(int) Signals.cpp:0:0\r\n #2 0x0000788c1ca42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #3 0x0000788c1ca969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\r\n #4 0x0000788c1ca42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\r\n #5 0x0000788c1ca287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\r\n #6 0x00000000007b40fd llvm::json::operator==(llvm::json::Value const&, llvm::json::Value const&) (.cold) JSON.cpp:0:0\r\n #7 0x0000000004e571e8 (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e571e8)\r\n #8 0x0000000004d53550 llvm::VerifierPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4d53550)\r\n #9 0x00000000008d8a7e llvm::detail::PassModel<llvm::Module, llvm::VerifierPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8d8a7e)\r\n#10 0x0000000004d17270 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4d17270)\r\n#11 0x00000000008e37f2 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8e37f2)\r\n#12 0x00000000008d671c optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8d671c)\r\n#13 0x0000788c1ca29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\r\n#14 0x0000788c1ca29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\r\n#15 0x00000000008cdb7e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8cdb7e)\r\nProgram terminated with signal: SIGSEGV\r\nCompiler returned: 139\r\n```", "author": "TatyanaDoubts", "labels": [ "llvm:SLPVectorizer", "crash-on-valid" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "56140a8258a3498cfcd9f0f05c182457d43cbfd2", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 15663, 15669 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::collectValuesToDemote" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/operand-is-reduced-val.ll", "commands": [ "opt -S --passes=slp-vectorizer < %s -slp-threshold=-10" ], "tests": [ { "test_name": "src", "test_body": "define i64 @src(i32 %a) {\nentry:\n %0 = sext i32 %a to i64\n %1 = add nsw i64 %0, 4294967297\n %2 = sext i32 %a to i64\n %3 = add nsw i64 %2, 4294967297\n %4 = add i64 %3, %1\n %5 = and i64 %3, 1\n %6 = add i64 %4, %5\n %7 = sext i32 %a to i64\n %8 = add nsw i64 %7, 4294967297\n %9 = add i64 %8, %6\n %10 = and i64 %8, 1\n %11 = add i64 %9, %10\n %12 = sext i32 %a to i64\n %13 = add nsw i64 %12, 4294967297\n %14 = add i64 %13, %11\n %15 = and i64 %13, 1\n %16 = add i64 %14, %15\n %17 = sext i32 %a to i64\n %18 = add nsw i64 %17, 4294967297\n %19 = add i64 %18, %16\n %20 = and i64 %18, 1\n %21 = add i64 %19, %20\n ret i64 %21\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLPVectorizer] Wrong value truncation ", "body": "- There seems to be an issue with SLPVectorizer. In the following example, a 2-byte wide value is incorrectly truncated:\r\n\r\n```\r\ndefine i64 @test(ptr addrspace(1) %arr, i32 %a) {\r\nentry:\r\n br label %loop\r\n\r\nloop:\r\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\r\n %local_1_7 = phi i64 [ 0, %entry ], [ %4, %loop ]\r\n %0 = sext i32 %a to i64\r\n %1 = add nsw i64 %0, 4294967297\r\n %2 = add i64 %1, %local_1_7\r\n %3 = and i64 %1, 1\r\n %4 = add i64 %2, %3\r\n %iv.next = add nuw nsw i64 %iv, 1\r\n %5 = icmp ugt i64 %iv, 355\r\n br i1 %5, label %exit, label %loop\r\n\r\nexit:\r\n ret i64 %4\r\n}\r\n```\r\n- In the loop we summarize the constant 4294967297 (`0x1'0000'0001`), but after running SLPVectorizer over the unrolled loop, the constant is truncated to `1`:\r\n```\r\nloop: \r\n %iv = phi i64 [ 0, %entry ], [ %iv.next.16, %loop ]\r\n %local_1_7 = phi i64 [ 0, %entry ], [ %op.rdx3, %loop ]\r\n %2 = add <16 x i32> %1, <i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1>\r\n %3 = sext <16 x i32> %2 to <16 x i64>\r\n...\r\n```\r\n- Command to reproduce: `opt -passes=loop-unroll,slp-vectorizer -unroll-count=17`\r\n- https://godbolt.org/z/zcPefTPzW\r\n- Looks like the issue was caused by the https://github.com/llvm/llvm-project/commit/7f2167868d8c1cedd3915883412b9c787a2f01db\r\n\r\n@alexey-bataev Could you please take a look?\r\n", "author": "aleks-tmb", "labels": [ "miscompilation", "release:backport", "llvm:SLPVectorizer" ], "comments": [ { "author": "nikic", "body": "This probably needs an LLVM 19 backport?\r\n\r\n/cherry-pick 65ac12d3c9877ecf5b97552364e7eead887d94eb 56140a8258a3498cfcd9f0f05c182457d43cbfd2" } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "9edc454ee601e04500529c98b753d3bd8f427d01", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": [ [ 935, 943 ], [ 945, 955 ], [ 3362, 3370 ] ], "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": [ "InstCombinerImpl::foldAndOrOfICmps", "foldIsPowerOf2OrZero" ], "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/ispow2.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "is_pow2or0_decrement_op", "test_body": "define i1 @is_pow2or0_decrement_op(i8 %x) {\n %dec = add i8 %x, -1\n %and = and i8 %dec, %x\n %cmp = icmp eq i8 %and, 0\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_negate_op_vec", "test_body": "define <2 x i1> @is_pow2_negate_op_vec(<2 x i32> %x) {\n %neg = sub <2 x i32> zeroinitializer, %x\n %and = and <2 x i32> %neg, %x\n %cmp = icmp eq <2 x i32> %and, %x\n %notzero = icmp ne <2 x i32> %x, zeroinitializer\n %r = and <2 x i1> %cmp, %notzero\n ret <2 x i1> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_wrong_cmp_op1_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_ctpop_wrong_cmp_op1_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ult i32 %t0, 3\n %notzero = icmp ne i32 %x, 0\n %r = select i1 %notzero, i1 %cmp, i1 false\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_negate_op", "test_body": "define i1 @is_pow2_negate_op(i32 %x) {\n %neg = sub i32 0, %x\n %and = and i32 %neg, %x\n %cmp = icmp eq i32 %and, %x\n %notzero = icmp ne i32 %x, 0\n %r = and i1 %notzero, %cmp\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_pow2_nz_known_bits", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @not_pow2_nz_known_bits(i32 %xin) {\n %x = or i32 %xin, 1\n %cnt = call i32 @llvm.ctpop.i32(i32 %x)\n %r = icmp ne i32 %cnt, 1\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_nz_known_bits", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_nz_known_bits(i32 %xin) {\n %x = or i32 %xin, 64\n %cnt = call i32 @llvm.ctpop.i32(i32 %x)\n %r = icmp eq i32 %cnt, 1\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_power2_or_zero_with_range", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_power2_or_zero_with_range(i32 %x) {\n %ctpop = call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp eq i32 %ctpop, 1\n %notzero = icmp eq i32 %x, 0\n %res = select i1 %notzero, i1 true, i1 %cmp\n ret i1 %res\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_is_p2_or_z", "test_body": "define i1 @blsmsk_is_p2_or_z(i32 %xx, i32 %yy) {\n %x = or i32 %xx, %yy\n %xm1 = add i32 %x, -1\n %y = xor i32 %x, %xm1\n %r = icmp uge i32 %x, %y\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop_commute_vec", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <2 x i8> @llvm.ctpop.v2i8(<2 x i8>) #0\n\ndefine <2 x i1> @isnot_pow2nor0_ctpop_commute_vec(<2 x i8> %x) {\n %t0 = tail call <2 x i8> @llvm.ctpop.v2i8(<2 x i8> %x)\n %cmp = icmp ne <2 x i8> %t0, splat (i8 1)\n %notzero = icmp ne <2 x i8> %x, zeroinitializer\n %r = and <2 x i1> %notzero, %cmp\n ret <2 x i1> %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_wrong_pred1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2or0_ctpop_wrong_pred1(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ne i32 %t0, 1\n %iszero = icmp eq i32 %x, 0\n %r = or i1 %iszero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_non_zero_ne_1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\ndeclare void @llvm.assume(i1 noundef) #1\n\ndefine i1 @is_pow2_non_zero_ne_1(i32 %x) {\n %notzero = icmp ne i32 %x, 0\n call void @llvm.assume(i1 %notzero)\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ne i32 %t0, 1\n ret i1 %cmp\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\nattributes #1 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_is_p2_or_z_fail", "test_body": "define i1 @blsmsk_is_p2_or_z_fail(i32 %xx, i32 %yy) {\n %x = or i32 %xx, %yy\n %xm1 = add i32 %x, -1\n %y = xor i32 %x, %xm1\n %r = icmp ugt i32 %x, %y\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_is_p2_or_z_uge_xy_fail", "test_body": "define i1 @blsmsk_is_p2_or_z_uge_xy_fail(i8 %xx, i8 %yy) {\n %x = or i8 %xx, %yy\n %xm1 = add i8 %x, -1\n %y = xor i8 %x, %xm1\n %r = icmp uge i8 %x, %y\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_logical_extra_uses", "test_body": "declare void @use(i32)\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndeclare void @use_i1(i1)\n\ndefine i1 @is_pow2or0_ctpop_logical_extra_uses(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n call void @use(i32 %t0)\n %cmp = icmp eq i32 %t0, 1\n call void @use_i1(i1 %cmp)\n %iszero = icmp eq i32 %x, 0\n call void @use_i1(i1 %iszero)\n %r = select i1 %iszero, i1 true, i1 %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_ctpop_commute_vec", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <2 x i8> @llvm.ctpop.v2i8(<2 x i8>) #0\n\ndefine <2 x i1> @isnot_pow2_ctpop_commute_vec(<2 x i8> %x) {\n %t0 = tail call <2 x i8> @llvm.ctpop.v2i8(<2 x i8> %x)\n %cmp = icmp ugt <2 x i8> %t0, splat (i8 1)\n %iszero = icmp eq <2 x i8> %x, zeroinitializer\n %r = or <2 x i1> %cmp, %iszero\n ret <2 x i1> %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_isnt_p2_or_z_fail_wrong_add", "test_body": "define i1 @blsmsk_isnt_p2_or_z_fail_wrong_add(i32 %x, i32 %z) {\n %xm1 = add i32 %z, -1\n %y = xor i32 %x, %xm1\n %r = icmp ult i32 %y, %x\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_wrong_pred2", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_ctpop_wrong_pred2(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ult i32 %t0, 2\n %cmp2 = icmp sgt i32 %x, 0\n %r = and i1 %cmp2, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_swap_cmp", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2or0_ctpop_swap_cmp(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp eq i32 %t0, 1\n %iszero = icmp eq i32 %x, 0\n %r = or i1 %cmp, %iszero\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_commute_vec_wrong_pred3", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <2 x i8> @llvm.ctpop.v2i8(<2 x i8>) #0\n\ndefine <2 x i1> @is_pow2or0_ctpop_commute_vec_wrong_pred3(<2 x i8> %x) {\n %t0 = tail call <2 x i8> @llvm.ctpop.v2i8(<2 x i8> %x)\n %cmp = icmp eq <2 x i8> %t0, splat (i8 1)\n %iszero = icmp eq <2 x i8> %x, zeroinitializer\n %r = and <2 x i1> %cmp, %iszero\n ret <2 x i1> %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_decrement_op_logical", "test_body": "define i1 @is_pow2_decrement_op_logical(i8 %x) {\n %dec = add i8 %x, -1\n %and = and i8 %dec, %x\n %cmp = icmp eq i8 %and, 0\n %notzero = icmp ne i8 %x, 0\n %r = select i1 %cmp, i1 %notzero, i1 false\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2or0_negate_op_vec", "test_body": "define <2 x i1> @isnot_pow2or0_negate_op_vec(<2 x i32> %x) {\n %neg = sub <2 x i32> zeroinitializer, %x\n %and = and <2 x i32> %neg, %x\n %cmp = icmp ne <2 x i32> %and, %x\n ret <2 x i1> %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_commute_vec", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <2 x i8> @llvm.ctpop.v2i8(<2 x i8>) #0\n\ndefine <2 x i1> @is_pow2or0_ctpop_commute_vec(<2 x i8> %x) {\n %t0 = tail call <2 x i8> @llvm.ctpop.v2i8(<2 x i8> %x)\n %cmp = icmp eq <2 x i8> %t0, splat (i8 1)\n %iszero = icmp eq <2 x i8> %x, zeroinitializer\n %r = or <2 x i1> %iszero, %cmp\n ret <2 x i1> %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_negate_op_logical", "test_body": "define i1 @is_pow2_negate_op_logical(i32 %x) {\n %neg = sub i32 0, %x\n %and = and i32 %neg, %x\n %cmp = icmp eq i32 %and, %x\n %notzero = icmp ne i32 %x, 0\n %r = select i1 %notzero, i1 %cmp, i1 false\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2nor0_ctpop(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ne i32 %t0, 1\n %notzero = icmp ne i32 %x, 0\n %r = and i1 %notzero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_isnt_p2_or_z_ult_xy_fail", "test_body": "define i1 @blsmsk_isnt_p2_or_z_ult_xy_fail(i8 %xx, i8 %yy) {\n %x = or i8 %xx, %yy\n %xm1 = add i8 %x, -1\n %y = xor i8 %x, %xm1\n %r = icmp ult i8 %x, %y\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_wrong_pred3_ctpop_commute_vec", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <2 x i8> @llvm.ctpop.v2i8(<2 x i8>) #0\n\ndefine <2 x i1> @isnot_pow2nor0_wrong_pred3_ctpop_commute_vec(<2 x i8> %x) {\n %t0 = tail call <2 x i8> @llvm.ctpop.v2i8(<2 x i8> %x)\n %cmp = icmp ne <2 x i8> %t0, splat (i8 1)\n %notzero = icmp ne <2 x i8> %x, zeroinitializer\n %r = or <2 x i1> %cmp, %notzero\n ret <2 x i1> %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_negate_op_vec", "test_body": "define <2 x i1> @is_pow2or0_negate_op_vec(<2 x i32> %x) {\n %neg = sub <2 x i32> zeroinitializer, %x\n %and = and <2 x i32> %neg, %x\n %cmp = icmp eq <2 x i32> %and, %x\n ret <2 x i1> %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2or0_negate_op", "test_body": "define i1 @isnot_pow2or0_negate_op(i32 %x) {\n %neg = sub i32 0, %x\n %and = and i32 %neg, %x\n %cmp = icmp ne i32 %and, %x\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_pow2_or_z_known_bits_fail_wrong_cmp", "test_body": "define <2 x i1> @not_pow2_or_z_known_bits_fail_wrong_cmp(<2 x i32> %xin) {\n %x = or <2 x i32> %xin, splat (i32 64)\n %cnt = call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> %x)\n %r = icmp ugt <2 x i32> %cnt, splat (i32 2)\n ret <2 x i1> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <2 x i32> @llvm.ctpop.v2i32(<2 x i32>) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_wrong_cmp_op2", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_ctpop_wrong_cmp_op2(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ult i32 %t0, 2\n %notzero = icmp ne i32 %x, 1\n %r = and i1 %notzero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_ctpop_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ult i32 %t0, 2\n %notzero = icmp ne i32 %x, 0\n %r = select i1 %notzero, i1 %cmp, i1 false\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_decrement_op_logical", "test_body": "define i1 @isnot_pow2_decrement_op_logical(i8 %x) {\n %dec = add i8 %x, -1\n %and = and i8 %dec, %x\n %cmp = icmp ne i8 %and, 0\n %iszero = icmp eq i8 %x, 0\n %r = select i1 %iszero, i1 true, i1 %cmp\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_negate_op_logical", "test_body": "define i1 @isnot_pow2_negate_op_logical(i32 %x) {\n %neg = sub i32 0, %x\n %and = and i32 %neg, %x\n %cmp = icmp ne i32 %and, %x\n %iszero = icmp eq i32 %x, 0\n %r = select i1 %cmp, i1 true, i1 %iszero\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2or0_ctpop(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp eq i32 %t0, 1\n %iszero = icmp eq i32 %x, 0\n %r = or i1 %iszero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_is_p2_or_z_uge_yx", "test_body": "define i1 @blsmsk_is_p2_or_z_uge_yx(i8 %xx, i8 %yy) {\n %x = or i8 %xx, %yy\n %xm1 = add i8 %x, -1\n %y = xor i8 %x, %xm1\n %r = icmp uge i8 %y, %x\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "has_single_bit_inv", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @has_single_bit_inv(i32 %x) {\nentry:\n %cmp1 = icmp eq i32 %x, 0\n %popcnt = call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)\n %cmp2 = icmp ugt i32 %popcnt, 1\n %sel = select i1 %cmp1, i1 true, i1 %cmp2\n ret i1 %sel\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_negate_op", "test_body": "define i1 @is_pow2or0_negate_op(i32 %x) {\n %neg = sub i32 0, %x\n %and = and i32 %neg, %x\n %cmp = icmp eq i32 %and, %x\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_isnt_p2_or_z_ugt_yx_fail", "test_body": "define i1 @blsmsk_isnt_p2_or_z_ugt_yx_fail(i8 %xx, i8 %yy) {\n %x = or i8 %xx, %yy\n %xm1 = add i8 %x, -1\n %y = xor i8 %x, %xm1\n %r = icmp ugt i8 %y, %x\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_isnt_p2_or_z_fail", "test_body": "define i1 @blsmsk_isnt_p2_or_z_fail(i32 %x) {\n %xm1 = add i32 %x, -1\n %y = xor i32 %x, %xm1\n %r = icmp ule i32 %y, %x\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_decrement_op_vec", "test_body": "define <2 x i1> @is_pow2_decrement_op_vec(<2 x i8> %x) {\n %dec = add <2 x i8> %x, splat (i8 -1)\n %and = and <2 x i8> %dec, %x\n %cmp = icmp eq <2 x i8> %and, zeroinitializer\n %notzero = icmp ne <2 x i8> %x, zeroinitializer\n %r = and <2 x i1> %notzero, %cmp\n ret <2 x i1> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop_extra_uses", "test_body": "declare void @use(i32)\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndeclare void @use_i1(i1)\n\ndefine i1 @isnot_pow2nor0_ctpop_extra_uses(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n call void @use(i32 %t0)\n %cmp = icmp ne i32 %t0, 1\n call void @use_i1(i1 %cmp)\n %notzero = icmp ne i32 %x, 0\n call void @use_i1(i1 %notzero)\n %r = and i1 %notzero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop_wrong_pred1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2nor0_ctpop_wrong_pred1(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp eq i32 %t0, 1\n %notzero = icmp ne i32 %x, 0\n %r = and i1 %notzero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_ctpop", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2_ctpop(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 1\n %iszero = icmp eq i32 %x, 0\n %r = or i1 %iszero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_isnt_p2_or_z_fail_multiuse", "test_body": "declare void @use.i32(i32)\n\ndefine i1 @blsmsk_isnt_p2_or_z_fail_multiuse(i32 %x) {\n %xm1 = add i32 %x, -1\n %y = xor i32 %x, %xm1\n call void @use.i32(i32 %y)\n %r = icmp ult i32 %y, %x\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_wrong_pred2_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2or0_ctpop_wrong_pred2_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ne i32 %t0, 1\n %iszero = icmp ne i32 %x, 0\n %r = select i1 %iszero, i1 true, i1 %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_extra_uses", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndeclare void @use_i1(i1)\n\ndefine i1 @is_pow2_ctpop_extra_uses(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ult i32 %t0, 2\n call void @use_i1(i1 %cmp)\n %notzero = icmp ne i32 %x, 0\n call void @use_i1(i1 %notzero)\n %r = and i1 %notzero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_isnt_p2_or_z_ult_yx", "test_body": "define i1 @blsmsk_isnt_p2_or_z_ult_yx(i8 %xx, i8 %yy) {\n %x = or i8 %xx, %yy\n %xm1 = add i8 %x, -1\n %y = xor i8 %x, %xm1\n %r = icmp ult i8 %y, %x\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_wrong_cmp_op1_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2or0_ctpop_wrong_cmp_op1_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp eq i32 %t0, 3\n %iszero = icmp eq i32 %x, 0\n %r = select i1 %iszero, i1 true, i1 %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_isnt_p2_or_z_fail_bad_xor", "test_body": "define i1 @blsmsk_isnt_p2_or_z_fail_bad_xor(i32 %x, i32 %z) {\n %xm1 = add i32 %x, -1\n %y = xor i32 %z, %xm1\n %r = icmp ult i32 %y, %x\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_negate_op_extra_use2", "test_body": "declare void @use(i32)\n\ndefine i1 @is_pow2or0_negate_op_extra_use2(i32 %x) {\n %neg = sub i32 0, %x\n %and = and i32 %neg, %x\n call void @use(i32 %and)\n %cmp = icmp eq i32 %and, %x\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_negate_op", "test_body": "define i1 @isnot_pow2_negate_op(i32 %x) {\n %neg = sub i32 0, %x\n %and = and i32 %neg, %x\n %cmp = icmp ne i32 %and, %x\n %iszero = icmp eq i32 %x, 0\n %r = or i1 %cmp, %iszero\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_negate_op_extra_use1", "test_body": "declare void @use(i32)\n\ndefine i1 @is_pow2or0_negate_op_extra_use1(i32 %x) {\n %neg = sub i32 0, %x\n call void @use(i32 %neg)\n %and = and i32 %neg, %x\n %cmp = icmp eq i32 %and, %x\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_ctpop_wrong_cmp_op1_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2_ctpop_wrong_cmp_op1_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 2\n %iszero = icmp eq i32 %x, 0\n %r = select i1 %iszero, i1 true, i1 %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_ctpop_wrong_cmp_op2_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2_ctpop_wrong_cmp_op2_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 1\n %iszero = icmp eq i32 %x, 1\n %r = select i1 %iszero, i1 true, i1 %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_wrong_cmp_op1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_ctpop_wrong_cmp_op1(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ult i32 %t0, 3\n %notzero = icmp ne i32 %x, 0\n %r = and i1 %notzero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_commute_vec_wrong_cmp_op1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <2 x i8> @llvm.ctpop.v2i8(<2 x i8>) #0\n\ndefine <2 x i1> @is_pow2or0_ctpop_commute_vec_wrong_cmp_op1(<2 x i8> %x) {\n %t0 = tail call <2 x i8> @llvm.ctpop.v2i8(<2 x i8> %x)\n %cmp = icmp eq <2 x i8> %t0, <i8 -1, i8 1>\n %iszero = icmp eq <2 x i8> %x, zeroinitializer\n %r = or <2 x i1> %cmp, %iszero\n ret <2 x i1> %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_ctpop_wrong_pred2_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2_ctpop_wrong_pred2_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 1\n %cmp2 = icmp slt i32 %x, 0\n %r = select i1 %cmp2, i1 true, i1 %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_extra_uses_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndeclare void @use_i1(i1)\n\ndefine i1 @is_pow2_ctpop_extra_uses_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ult i32 %t0, 2\n call void @use_i1(i1 %cmp)\n %notzero = icmp ne i32 %x, 0\n call void @use_i1(i1 %notzero)\n %r = select i1 %notzero, i1 %cmp, i1 false\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2or0_negate_op_commute3", "test_body": "define i1 @isnot_pow2or0_negate_op_commute3(i32 %p) {\n %x = urem i32 42, %p\n %neg = sub i32 0, %x\n %and = and i32 %x, %neg\n %cmp = icmp ne i32 %x, %and\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_wrong_cmp_op2_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_ctpop_wrong_cmp_op2_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ult i32 %t0, 2\n %notzero = icmp ne i32 %x, 1\n %r = select i1 %notzero, i1 %cmp, i1 false\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_non_zero_eq_1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\ndeclare void @llvm.assume(i1 noundef) #1\n\ndefine i1 @is_pow2_non_zero_eq_1(i32 %x) {\n %notzero = icmp ne i32 %x, 0\n call void @llvm.assume(i1 %notzero)\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp eq i32 %t0, 1\n ret i1 %cmp\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\nattributes #1 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop_logical_extra_uses", "test_body": "declare void @use(i32)\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndeclare void @use_i1(i1)\n\ndefine i1 @isnot_pow2nor0_ctpop_logical_extra_uses(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n call void @use(i32 %t0)\n %cmp = icmp ne i32 %t0, 1\n call void @use_i1(i1 %cmp)\n %notzero = icmp ne i32 %x, 0\n call void @use_i1(i1 %notzero)\n %r = select i1 %notzero, i1 %cmp, i1 false\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_wrong_pred2", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2or0_ctpop_wrong_pred2(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ne i32 %t0, 1\n %iszero = icmp ne i32 %x, 0\n %r = or i1 %iszero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_ctpop_wrong_cmp_op2", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2_ctpop_wrong_cmp_op2(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 1\n %iszero = icmp eq i32 %x, 1\n %r = or i1 %iszero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_wrong_pred1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_ctpop_wrong_pred1(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 2\n %notzero = icmp ne i32 %x, 0\n %r = and i1 %notzero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_ctpop_extra_uses_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndeclare void @use_i1(i1)\n\ndefine i1 @isnot_pow2_ctpop_extra_uses_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 1\n call void @use_i1(i1 %cmp)\n %iszero = icmp eq i32 %x, 0\n call void @use_i1(i1 %iszero)\n %r = select i1 %iszero, i1 true, i1 %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_extra_uses", "test_body": "declare void @use(i32)\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndeclare void @use_i1(i1)\n\ndefine i1 @is_pow2or0_ctpop_extra_uses(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n call void @use(i32 %t0)\n %cmp = icmp eq i32 %t0, 1\n call void @use_i1(i1 %cmp)\n %iszero = icmp eq i32 %x, 0\n call void @use_i1(i1 %iszero)\n %r = or i1 %iszero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_non_zero_ult_2", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\ndeclare void @llvm.assume(i1 noundef) #1\n\ndefine i1 @is_pow2_non_zero_ult_2(i32 %x) {\n %notzero = icmp ne i32 %x, 0\n call void @llvm.assume(i1 %notzero)\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ult i32 %t0, 2\n ret i1 %cmp\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\nattributes #1 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_commute_vec", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <2 x i8> @llvm.ctpop.v2i8(<2 x i8>) #0\n\ndefine <2 x i1> @is_pow2_ctpop_commute_vec(<2 x i8> %x) {\n %t0 = tail call <2 x i8> @llvm.ctpop.v2i8(<2 x i8> %x)\n %cmp = icmp ult <2 x i8> %t0, splat (i8 2)\n %notzero = icmp ne <2 x i8> %x, zeroinitializer\n %r = and <2 x i1> %cmp, %notzero\n ret <2 x i1> %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_decrement_op", "test_body": "define i1 @isnot_pow2_decrement_op(i8 %x) {\n %dec = add i8 %x, -1\n %and = and i8 %dec, %x\n %cmp = icmp ne i8 %and, 0\n %iszero = icmp eq i8 %x, 0\n %r = or i1 %iszero, %cmp\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop_wrong_cmp_op1_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2nor0_ctpop_wrong_cmp_op1_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ne i32 %t0, 5\n %notzero = icmp ne i32 %x, 0\n %r = select i1 %notzero, i1 %cmp, i1 false\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_wrong_pred1_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_ctpop_wrong_pred1_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 2\n %notzero = icmp ne i32 %x, 0\n %r = select i1 %notzero, i1 %cmp, i1 false\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2or0_decrement_op_vec", "test_body": "define <2 x i1> @isnot_pow2or0_decrement_op_vec(<2 x i8> %x) {\n %dec = add <2 x i8> %x, splat (i8 -1)\n %and = and <2 x i8> %dec, %x\n %cmp = icmp ne <2 x i8> %and, zeroinitializer\n ret <2 x i1> %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop_wrong_pred2_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_ctpop_wrong_pred2_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ult i32 %t0, 2\n %cmp2 = icmp sgt i32 %x, 0\n %r = select i1 %cmp2, i1 %cmp, i1 false\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_isnt_p2_or_z_ugt_xy", "test_body": "define i1 @blsmsk_isnt_p2_or_z_ugt_xy(i8 %xx, i8 %yy) {\n %x = or i8 %xx, %yy\n %xm1 = add i8 %x, -1\n %y = xor i8 %x, %xm1\n %r = icmp ugt i8 %x, %y\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop_commute_vec_wrong_cmp_op1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <2 x i8> @llvm.ctpop.v2i8(<2 x i8>) #0\n\ndefine <2 x i1> @isnot_pow2nor0_ctpop_commute_vec_wrong_cmp_op1(<2 x i8> %x) {\n %t0 = tail call <2 x i8> @llvm.ctpop.v2i8(<2 x i8> %x)\n %cmp = icmp ne <2 x i8> %t0, <i8 0, i8 -1>\n %notzero = icmp ne <2 x i8> %x, zeroinitializer\n %r = and <2 x i1> %cmp, %notzero\n ret <2 x i1> %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop_wrong_pred2_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2nor0_ctpop_wrong_pred2_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp eq i32 %t0, 1\n %notzero = icmp eq i32 %x, 0\n %r = select i1 %notzero, i1 %cmp, i1 false\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_negate_op_commute1", "test_body": "define i1 @is_pow2or0_negate_op_commute1(i32 %p) {\n %x = srem i32 42, %p\n %neg = sub i32 0, %x\n %and = and i32 %x, %neg\n %cmp = icmp eq i32 %and, %x\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_or_z_known_bits", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_or_z_known_bits(i32 %xin) {\n %x = or i32 %xin, -2147483648\n %cnt = call i32 @llvm.ctpop.i32(i32 %x)\n %r = icmp ult i32 %cnt, 2\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_decrement_op_vec", "test_body": "define <2 x i1> @is_pow2or0_decrement_op_vec(<2 x i8> %x) {\n %dec = add <2 x i8> %x, splat (i8 -1)\n %and = and <2 x i8> %dec, %x\n %cmp = icmp eq <2 x i8> %and, zeroinitializer\n ret <2 x i1> %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_decrement_op", "test_body": "define i1 @is_pow2_decrement_op(i8 %x) {\n %dec = add i8 %x, -1\n %and = and i8 %dec, %x\n %cmp = icmp eq i8 %and, 0\n %notzero = icmp ne i8 %x, 0\n %r = and i1 %cmp, %notzero\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_ctpop_wrong_pred2", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2_ctpop_wrong_pred2(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 1\n %cmp2 = icmp slt i32 %x, 0\n %r = or i1 %cmp2, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_ctpop_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2_ctpop_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 1\n %iszero = icmp eq i32 %x, 0\n %r = select i1 %iszero, i1 true, i1 %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2or0_negate_op_commute2", "test_body": "define i1 @isnot_pow2or0_negate_op_commute2(i32 %p) {\n %x = urem i32 42, %p\n %neg = sub i32 0, %x\n %and = and i32 %neg, %x\n %cmp = icmp ne i32 %x, %and\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_is_p2_or_z_fail_bad_cmp", "test_body": "define i1 @blsmsk_is_p2_or_z_fail_bad_cmp(i32 %x, i32 %z) {\n %xm1 = add i32 %x, -1\n %y = xor i32 %x, %xm1\n %r = icmp uge i32 %y, %z\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_decrement_op_vec", "test_body": "define <2 x i1> @isnot_pow2_decrement_op_vec(<2 x i8> %x) {\n %dec = add <2 x i8> %x, splat (i8 -1)\n %and = and <2 x i8> %dec, %x\n %cmp = icmp ne <2 x i8> %and, zeroinitializer\n %iszero = icmp eq <2 x i8> %x, zeroinitializer\n %r = or <2 x i1> %cmp, %iszero\n ret <2 x i1> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_wrong_cmp_op1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2or0_ctpop_wrong_cmp_op1(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp eq i32 %t0, 2\n %iszero = icmp eq i32 %x, 0\n %r = or i1 %iszero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_is_p2_or_z_ule_yx_fail", "test_body": "define i1 @blsmsk_is_p2_or_z_ule_yx_fail(i8 %xx, i8 %yy) {\n %x = or i8 %xx, %yy\n %xm1 = add i8 %x, -1\n %y = xor i8 %x, %xm1\n %r = icmp ule i8 %y, %x\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_pow2_or_z_known_bits", "test_body": "define <2 x i1> @not_pow2_or_z_known_bits(<2 x i32> %xin) {\n %x = or <2 x i32> %xin, splat (i32 64)\n %cnt = call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> %x)\n %r = icmp ugt <2 x i32> %cnt, splat (i32 1)\n ret <2 x i1> %r\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <2 x i32> @llvm.ctpop.v2i32(<2 x i32>) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_negate_op_vec", "test_body": "define <2 x i1> @isnot_pow2_negate_op_vec(<2 x i32> %x) {\n %neg = sub <2 x i32> zeroinitializer, %x\n %and = and <2 x i32> %neg, %x\n %cmp = icmp ne <2 x i32> %and, %x\n %iszero = icmp eq <2 x i32> %x, zeroinitializer\n %r = or <2 x i1> %iszero, %cmp\n ret <2 x i1> %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2or0_ctpop_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2or0_ctpop_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp eq i32 %t0, 1\n %iszero = icmp eq i32 %x, 0\n %r = select i1 %iszero, i1 true, i1 %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_ctpop_extra_uses", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndeclare void @use_i1(i1)\n\ndefine i1 @isnot_pow2_ctpop_extra_uses(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 1\n call void @use_i1(i1 %cmp)\n %iszero = icmp eq i32 %x, 0\n call void @use_i1(i1 %iszero)\n %r = or i1 %iszero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_power2_or_zero_inv_with_range", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_power2_or_zero_inv_with_range(i32 %x) {\n %ctpop = call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ne i32 %ctpop, 1\n %notzero = icmp ne i32 %x, 0\n %res = select i1 %notzero, i1 %cmp, i1 false\n ret i1 %res\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop_wrong_pred2", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2nor0_ctpop_wrong_pred2(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp eq i32 %t0, 1\n %notzero = icmp eq i32 %x, 0\n %r = and i1 %notzero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "has_single_bit", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @has_single_bit(i32 %x) {\nentry:\n %cmp1 = icmp ne i32 %x, 0\n %popcnt = call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)\n %cmp2 = icmp ult i32 %popcnt, 2\n %sel = select i1 %cmp1, i1 %cmp2, i1 false\n ret i1 %sel\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_fail_pr63327", "test_body": "define i1 @is_pow2_fail_pr63327(i32 %x) {\n %nx = sub i32 0, %x\n %x_and_nx = and i32 %x, %nx\n %r = icmp sge i32 %x_and_nx, %x\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_ctpop", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @is_pow2_ctpop(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ult i32 %t0, 2\n %notzero = icmp ne i32 %x, 0\n %r = and i1 %notzero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_nz_known_bits_fail_multiuse", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndeclare void @use.i32(i32)\n\ndefine i1 @is_pow2_nz_known_bits_fail_multiuse(i32 %xin) {\n %x = or i32 %xin, 64\n %cnt = call i32 @llvm.ctpop.i32(i32 %x)\n call void @use.i32(i32 %cnt)\n %r = icmp eq i32 %cnt, 1\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_isnt_p2_or_z", "test_body": "define i1 @blsmsk_isnt_p2_or_z(i32 %x) {\n %xm1 = add i32 %x, -1\n %y = xor i32 %x, %xm1\n %r = icmp ult i32 %y, %x\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2or0_decrement_op", "test_body": "define i1 @isnot_pow2or0_decrement_op(i8 %x) {\n %dec = add i8 %x, -1\n %and = and i8 %dec, %x\n %cmp = icmp ne i8 %and, 0\n ret i1 %cmp\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "not_pow2_nz_known_bits_fail_not_p2_test", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @not_pow2_nz_known_bits_fail_not_p2_test(i32 %xin) {\n %x = or i32 %xin, 1\n %cnt = call i32 @llvm.ctpop.i32(i32 %x)\n %r = icmp ne i32 %cnt, 2\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2_ctpop_wrong_cmp_op1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2_ctpop_wrong_cmp_op1(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 2\n %iszero = icmp eq i32 %x, 0\n %r = or i1 %iszero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "blsmsk_is_p2_or_z_ule_xy", "test_body": "define i1 @blsmsk_is_p2_or_z_ule_xy(i8 %xx, i8 %yy) {\n %x = or i8 %xx, %yy\n %xm1 = add i8 %x, -1\n %y = xor i8 %x, %xm1\n %r = icmp ule i8 %x, %y\n ret i1 %r\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "is_pow2_non_zero_ugt_1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\n; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)\ndeclare void @llvm.assume(i1 noundef) #1\n\ndefine i1 @is_pow2_non_zero_ugt_1(i32 %x) {\n %notzero = icmp ne i32 %x, 0\n call void @llvm.assume(i1 %notzero)\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ugt i32 %t0, 1\n ret i1 %cmp\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\nattributes #1 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop_swap_cmp", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2nor0_ctpop_swap_cmp(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ne i32 %t0, 1\n %notzero = icmp ne i32 %x, 0\n %r = and i1 %cmp, %notzero\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop_logical", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2nor0_ctpop_logical(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ne i32 %t0, 1\n %notzero = icmp ne i32 %x, 0\n %r = select i1 %notzero, i1 %cmp, i1 false\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "isnot_pow2nor0_ctpop_wrong_cmp_op1", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctpop.i32(i32) #0\n\ndefine i1 @isnot_pow2nor0_ctpop_wrong_cmp_op1(i32 %x) {\n %t0 = tail call i32 @llvm.ctpop.i32(i32 %x)\n %cmp = icmp ne i32 %t0, 4\n %notzero = icmp ne i32 %x, 0\n %r = and i1 %notzero, %cmp\n ret i1 %r\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[InstCombine] `range` attribute should be dropped in `foldIsPowerOf2OrZero`", "body": "Reproducer: https://alive2.llvm.org/ce/z/u62KKP (Please use latest alive2 with https://github.com/AliveToolkit/alive2/pull/1097)\r\n```\r\ndefine i1 @src(i32 %x) {\r\n %t0 = tail call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)\r\n %cmp = icmp ne i32 %t0, 1\r\n %notzero = icmp ne i32 %x, 0\r\n %r = select i1 %notzero, i1 %cmp, i1 false\r\n ret i1 %r\r\n}\r\n\r\ndefine i1 @tgt(i32 %x) {\r\n %t0 = tail call range(i32 1, 33) i32 @llvm.ctpop.i32(i32 %x)\r\n %r = icmp ugt i32 %t0, 1\r\n ret i1 %r\r\n}\r\n```\r\n```\r\n----------------------------------------\r\ndefine i1 @src(i32 %x) {\r\n#0:\r\n %t0 = ctpop i32 %x\r\n %#range_0_%t0 = !range i32 %t0, i32 1, i32 33\r\n %cmp = icmp ne i32 %#range_0_%t0, 1\r\n %notzero = icmp ne i32 %x, 0\r\n %r = select i1 %notzero, i1 %cmp, i1 0\r\n ret i1 %r\r\n}\r\n=>\r\ndefine i1 @tgt(i32 %x) {\r\n#0:\r\n %t0 = ctpop i32 %x\r\n %#range_0_%t0 = !range i32 %t0, i32 1, i32 33\r\n %r = icmp ugt i32 %#range_0_%t0, 1\r\n ret i1 %r\r\n}\r\nTransformation doesn't verify!\r\n\r\nERROR: Target is more poisonous than source\r\n\r\nExample:\r\ni32 %x = #x00000000 (0)\r\n\r\nSource:\r\ni32 %t0 = #x00000000 (0)\r\ni32 %#range_0_%t0 = poison\r\ni1 %cmp = poison\r\ni1 %notzero = #x0 (0)\r\ni1 %r = #x0 (0)\r\n\r\nTarget:\r\ni32 %t0 = #x00000000 (0)\r\ni32 %#range_0_%t0 = poison\r\ni1 %r = poison\r\nSource value: #x0 (0)\r\nTarget value: poison\r\n```", "author": "dtcxzyw", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [] }

[ "llvm/test/Transforms/Attributor" ]

{ "fix_commit": "2d61692d4b75b7d92b44bfafb1011c1723955151", "components": [ "Attributor" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": [ [ 5899, 5908 ] ], "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": [ "AANoCaptureImpl::updateImpl" ], "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/Attributor/issue87856.ll", "commands": [ "opt -S -passes=attributor < %s" ], "tests": [ { "test_name": "<module>", "test_body": "\ndefine void @null_ptr_is_valid_call_with_null() #0 {\n;\n call void @store_as0(ptr null)\n ret void\n}\n\ndefine void @null_ptr_is_valid_call_with_undef() #0 {\n;\n call void @store_as0(ptr undef)\n ret void\n}\n\ndefine void @store_as0(ptr %0) {\n;\n store i16 0, ptr %0, align 2\n ret void\n}\n\ndefine void @call_store_as1() {\n;\n call void @store_as1(ptr addrspace(1) null)\n ret void\n}\n\ndefine void @store_as1(ptr addrspace(1) %arg) {\n;\n store i16 0, ptr addrspace(1) %arg, align 2\n ret void\n}\n\nattributes #0 = { null_pointer_is_valid }\n;.\n;.", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[attributor] Crash on `null_pointer_is_valid` function", "body": "With\r\n\r\n```\r\ntarget datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128\"\r\ntarget triple = \"aarch64-none-linux-android28\"\r\n\r\n; Function Attrs: null_pointer_is_valid\r\ndefine i64 @foo() #0 {\r\n call fastcc void @bar(ptr null)\r\n ret i64 0\r\n}\r\n\r\ndefine fastcc void @bar(ptr %0) {\r\n store i16 0, ptr %0, align 2\r\n ret void\r\n}\r\n\r\nattributes #0 = { null_pointer_is_valid }\r\n```\r\n\r\nand running\r\n\r\n```\r\nopt -passes=attributor file.ll\r\n```\r\n\r\nwe crash with\r\n\r\n```\r\nopt: llvm-project/llvm/lib/Transforms/IPO/AttributorAttributes.cpp:5901: virtual ChangeStatus (anonymous namespace)::AANoCaptureImpl::updateImpl(Attributor &): Assertion `F && \"Expected a function!\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0. Program arguments: opt -passes=attributor reduced.ll\r\n #0 0x000000000165bf38 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (llvm-project/build/Release/bin/opt+0x165bf38)\r\n #1 0x0000000001659a40 llvm::sys::RunSignalHandlers() (llvm-project/build/Release/bin/opt+0x1659a40)\r\n #2 0x000000000165c938 SignalHandler(int) Signals.cpp:0:0\r\n #3 0x00007f3ec923e6f0 __restore_rt (/lib64/libc.so.6+0x3e6f0)\r\n #4 0x00007f3ec928b94c __pthread_kill_implementation (/lib64/libc.so.6+0x8b94c)\r\n #5 0x00007f3ec923e646 gsignal (/lib64/libc.so.6+0x3e646)\r\n #6 0x00007f3ec92287f3 abort (/lib64/libc.so.6+0x287f3)\r\n #7 0x00007f3ec922871b _nl_load_domain.cold (/lib64/libc.so.6+0x2871b)\r\n #8 0x00007f3ec9237386 (/lib64/libc.so.6+0x37386)\r\n #9 0x0000000002f2a65b (anonymous namespace)::AANoCaptureImpl::updateImpl(llvm::Attributor&) AttributorAttributes.cpp:0:0\r\n#10 0x0000000002ec8492 llvm::AbstractAttribute::update(llvm::Attributor&) (llvm-project/build/Release/bin/opt+0x2ec8492)\r\n#11 0x0000000002ed3b83 llvm::Attributor::updateAA(llvm::AbstractAttribute&) (llvm-project/build/Release/bin/opt+0x2ed3b83)\r\n#12 0x0000000002eec289 llvm::AANoCapture const* llvm::Attributor::getOrCreateAAFor<llvm::AANoCapture>(llvm::IRPosition, llvm::AbstractAttribute const*, llvm::DepClassTy, bool, bool) Attributor.cpp:0:0\r\n#13 0x0000000002f1ab57 (anonymous namespace)::AANoAliasCallSiteArgument::updateImpl(llvm::Attributor&) AttributorAttributes.cpp:0:0\r\n#14 0x0000000002ec8492 llvm::AbstractAttribute::update(llvm::Attributor&) (llvm-project/build/Release/bin/opt+0x2ec8492)\r\n#15 0x0000000002ed3b83 llvm::Attributor::updateAA(llvm::AbstractAttribute&) (llvm-project/build/Release/bin/opt+0x2ed3b83)\r\n#16 0x0000000002efba19 llvm::AANoAlias const* llvm::Attributor::getOrCreateAAFor<llvm::AANoAlias>(llvm::IRPosition, llvm::AbstractAttribute const*, llvm::DepClassTy, bool, bool) Attributor.cpp:0:0\r\n#17 0x0000000002ede880 void llvm::Attributor::checkAndQueryIRAttr<(llvm::Attribute::AttrKind)20, llvm::AANoAlias>(llvm::IRPosition const&, llvm::AttributeSet) (llvm-project/build/Release/bin/opt+0x2ede880)\r\n#18 0x0000000002edd545 llvm::Attributor::identifyDefaultAbstractAttributes(llvm::Function&) (llvm-project/build/Release/bin/opt+0x2edd545)\r\n#19 0x0000000002ee0800 runAttributorOnFunctions(llvm::InformationCache&, llvm::SetVector<llvm::Function*, llvm::SmallVector<llvm::Function*, 0u>, llvm::DenseSet<llvm::Function*, llvm::DenseMapInfo<llvm::Function*, void>>, 0u>&, llvm::AnalysisGetter&, llvm::CallGraphUpdater&, bool, bool) Attributor.cpp:0:0\r\n#20 0x0000000002edfc41 llvm::AttributorPass::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (llvm-project/build/Release/bin/opt+0x2edfc41)\r\n#21 0x0000000002b6fcdd llvm::detail::PassModel<llvm::Module, llvm::AttributorPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) PassBuilderPipelines.cpp:0:0\r\n#22 0x0000000001853e56 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (llvm-project/build/Release/bin/opt+0x1853e56)\r\n#23 0x0000000002afaa4b llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (llvm-project/build/Release/bin/opt+0x2afaa4b)\r\n#24 0x0000000001622f36 optMain (llvm-project/build/Release/bin/opt+0x1622f36)\r\n```", "author": "lanza", "labels": [ "crash-on-valid", "llvm::Attributor" ], "comments": [ { "author": "lanza", "body": "https://github.com/llvm/llvm-project/blob/0f52f4ddd909eb38f2a691ffed8469263fe5f635/llvm/lib/Transforms/IPO/AttributorAttributes.cpp#L5901" }, { "author": "dtcxzyw", "body": "cc @arsenm " }, { "author": "arsenm", "body": "Just returning on the null function seems to work, but I don't understand exactly why it reaches here. AANoCapture::isImpliedByIR is incorrectly reimplementing NullPointerIsDefined but fixing that doesn't seem to help any " } ] }

[ "llvm/test/Transforms/Coroutines" ]

{ "fix_commit": "853bff2122e1f42398587f76234c05d56f16318e", "components": [ "Coroutines" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": [ [ 2080, 2091 ], [ 2105, 2117 ], [ 2200, 2205 ], [ 2211, 2217 ], [ 2223, 2236 ] ], "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": [ "CoroSplitPass::run", "replacePrepare", "splitCoroutine", "updateCallGraphAfterCoroutineSplit" ], "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/Coroutines/gh107139-split-in-scc.ll", "commands": [ "opt < %s -passes='cgscc(coro-split)' -S" ], "tests": [ { "test_name": "<module>", "test_body": "; Verify that we don't crash on mutually recursive coroutines\n\ntarget triple = \"x86_64-redhat-linux-gnu\"\n\ndefine void @foo() presplitcoroutine personality ptr null {\nentry:\n\n %0 = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)\n %1 = call ptr @llvm.coro.begin(token %0, ptr null)\n %2 = call token @llvm.coro.save(ptr null)\n %3 = call i8 @llvm.coro.suspend(token none, i1 false)\n %4 = call token @llvm.coro.save(ptr null)\n call void @llvm.coro.await.suspend.void(ptr null, ptr null, ptr @bar)\n ret void\n}\n\ndefine void @bar(ptr %0, ptr %1) {\nentry:\n call void @foo()\n ret void\n}\n\n\ndeclare token @llvm.coro.id(i32, ptr readnone, ptr nocapture readonly, ptr) #0\ndeclare ptr @llvm.coro.begin(token, ptr writeonly) nounwind\ndeclare token @llvm.coro.save(ptr) nomerge nounwind\ndeclare void @llvm.coro.await.suspend.void(ptr, ptr, ptr)\ndeclare i8 @llvm.coro.suspend(token, i1) nounwind\n\nattributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: read) }", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "\"Invalidated the current SCC\" assertion failure after #79712", "body": "For the source file in https://gist.github.com/smeenai/fcd14380467e813a28f1ef8c5484b775 (reduced from a large example that uses libunifex; it's probably possible to reduce this further but I'm not at all familiar with coroutines), the following command succeeds with Clang 18 but fails with Clang 19 and trunk:\r\n\r\n```\r\n$ clang -c -o /dev/null coroutine_crash.cpp -std=c++20 -w\r\nclang: llvm/lib/Analysis/CGSCCPassManager.cpp:1167: LazyCallGraph::SCC &updateCGAndAnalysisManagerForPass(llvm::LazyCallGraph &, LazyCallGraph::SCC &, LazyCallGraph::Node &, llvm::CGSCCAnalysisManager &, llvm::CGSCCUpdateResult &, llvm::FunctionAnalysisManager &, bool): Assertion `!UR.InvalidatedSCCs.count(C) && \"Invalidated the current SCC!\"' failed.\r\n```\r\n\r\nI bisected this to #79712. CC @fpasserby, @ChuanqiXu9, and @yuxuanchen1997 ", "author": "smeenai", "labels": [ "crash", "coroutines", "llvm:transforms" ], "comments": [ { "author": "yuxuanchen1997", "body": "I took a look at this and I think it was due to incorrect call graph updates. `updateCGAndAnalysisManagerFor(CGSCC|Function)Pass` seems to return an updated SCC but we discarded the updated SCC.\r\n\r\nSee example usage: https://github.com/llvm/llvm-project/blob/main/llvm/lib/Analysis/CGSCCPassManager.cpp#L561-L562\r\nSee implementation: https://github.com/llvm/llvm-project/blob/main/llvm/lib/Analysis/CGSCCPassManager.cpp#L1170-L1175\r\n\r\nI have a patch https://github.com/llvm/llvm-project/pull/107935 but still need some time for a test case. " }, { "author": "yuxuanchen1997", "body": "This happens when foo has is not a single node SCC:\r\n```\r\ndefine void @foo() presplitcoroutine personality ptr null {\r\nentry:\r\n %0 = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)\r\n %1 = call ptr @llvm.coro.begin(token %0, ptr null)\r\n %2 = call token @llvm.coro.save(ptr null)\r\n %3 = call i8 @llvm.coro.suspend(token none, i1 false)\r\n %4 = call token @llvm.coro.save(ptr null)\r\n call void @llvm.coro.await.suspend.void(ptr null, ptr null, ptr @bar)\r\n ret void\r\n}\r\n\r\ndefine void @bar(ptr %0, ptr %1) {\r\nentry:\r\n call void @foo()\r\n ret void\r\n}\r\n\r\ndeclare token @llvm.coro.id(i32, ptr readnone, ptr nocapture readonly, ptr) #0\r\ndeclare ptr @llvm.coro.begin(token, ptr writeonly) nounwind\r\ndeclare token @llvm.coro.save(ptr) nomerge nounwind\r\ndeclare void @llvm.coro.await.suspend.void(ptr, ptr, ptr)\r\ndeclare i8 @llvm.coro.suspend(token, i1) nounwind\r\n\r\nattributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: read) }\r\n```\r\n\r\nRepro the crash with `clang -O0 bad.ll`." }, { "author": "yuxuanchen1997", "body": "The 3rd argument to `@llvm.coro.await.suspend` is the `await_suspend` function in C++. This happens when `await_suspend()` calls the same coroutine from its body. " } ] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "6261c53c6f9c82bfca5df2ed5917876d748ed079", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": [ [ 175, 181 ] ], "llvm/lib/Transforms/Vectorize/VPlan.h": [ [ 913, 918 ], [ 920, 928 ], [ 1016, 1021 ], [ 1221, 1226 ] ], "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": [ "createOr", "createSelect" ], "llvm/lib/Transforms/Vectorize/VPlan.h": [ "GEPFlagsTy", "VPInstruction", "VPRecipeWithIRFlags" ], "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/pr87378-vpinstruction-or-drop-poison-generating-flags.ll", "commands": [ "opt -p loop-vectorize -mattr=\"+v\" -S %s" ], "tests": [ { "test_name": "<module>", "test_body": "\ntarget datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\ntarget triple = \"riscv64-unknown-linux-gnu\"\n\n; Test case for https://github.com/llvm/llvm-project/issues/87378.\ndefine void @pr87378_vpinstruction_or_drop_poison_generating_flags(ptr %arg, i64 %a, i64 %b, i64 %c) {\n;\nentry:\n br label %loop.header\n\nloop.header:\n %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]\n %c.1 = icmp ule i64 %iv, %a\n br i1 %c.1, label %then.1, label %else.1\n\nthen.1:\n %c.2 = icmp ule i64 %iv, %b\n br i1 %c.2, label %else.1, label %merge\n\nelse.1:\n %c.3 = icmp ule i64 %iv, %c\n br i1 %c.3, label %then.2, label %loop.latch\n\nthen.2:\n br label %merge\n\nmerge:\n %idx = phi i64 [ poison, %then.1 ], [ %iv, %then.2 ]\n %getelementptr = getelementptr i16, ptr %arg, i64 %idx\n store i16 0, ptr %getelementptr, align 2\n br label %loop.latch\n\nloop.latch:\n %iv.next = add i64 %iv, 1\n %icmp = icmp eq i64 %iv, 1000\n br i1 %icmp, label %exit, label %loop.header\n\nexit:\n ret void\n}\n;.\n;.", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[LoopVectorize] Assertion `OpType == OperationType::DisjointOp && \"recipe cannot have a disjoing flag\"' failed.", "body": "Reduced LLVM IR:\r\n``` llvm ir\r\ntarget datalayout = \"e-m:e-p:64:64-i64:64-i128:128-n32:64-S128\"\r\ntarget triple = \"riscv64-unknown-linux-gnu\"\r\n\r\ndefine i32 @main() #0 {\r\nentry:\r\n br label %for.body300.us.us.i\r\n\r\nfor.body300.us.us.i: ; preds = %if.end559.us.us.i, %entry\r\n br label %for.body326.us.us.i\r\n\r\nfor.body326.us.us.i: ; preds = %if.end559.us.us.i, %for.body300.us.us.i\r\n %indvars.iv18 = phi i64 [ 0, %for.body300.us.us.i ], [ %indvars.iv.next19, %if.end559.us.us.i ]\r\n br i1 false, label %cond.end339.us.us.i, label %cond.end354.us.us.i\r\n\r\ncond.end339.us.us.i: ; preds = %for.body326.us.us.i\r\n br i1 false, label %cond.end339.us.us.i.if.then357.us.us.i_crit_edge, label %cond.end339.us.us.i.cond.end354.us.us.i_crit_edge\r\n\r\ncond.end339.us.us.i.cond.end354.us.us.i_crit_edge: ; preds = %cond.end339.us.us.i\r\n br label %cond.end354.us.us.i\r\n\r\ncond.end339.us.us.i.if.then357.us.us.i_crit_edge: ; preds = %cond.end339.us.us.i\r\n br label %if.then357.us.us.i\r\n\r\ncond.end354.us.us.i: ; preds = %cond.end339.us.us.i.cond.end354.us.us.i_crit_edge, %for.body326.us.us.i\r\n br i1 false, label %cond.end354.us.us.i.if.then357.us.us.i_crit_edge, label %if.end559.us.us.i\r\n\r\ncond.end354.us.us.i.if.then357.us.us.i_crit_edge: ; preds = %cond.end354.us.us.i\r\n br label %if.then357.us.us.i\r\n\r\nif.then357.us.us.i: ; preds = %cond.end354.us.us.i.if.then357.us.us.i_crit_edge, %cond.end339.us.us.i.if.then357.us.us.i_crit_edge\r\n %.pre1143.i7 = phi i64 [ poison, %cond.end339.us.us.i.if.then357.us.us.i_crit_edge ], [ %indvars.iv18, %cond.end354.us.us.i.if.then357.us.us.i_crit_edge ]\r\n %arrayidx429.us.us.i = getelementptr [14 x i16], ptr null, i64 0, i64 %.pre1143.i7\r\n store i16 0, ptr %arrayidx429.us.us.i, align 2\r\n br label %if.end559.us.us.i\r\n\r\nif.end559.us.us.i: ; preds = %if.then357.us.us.i, %cond.end354.us.us.i\r\n %indvars.iv.next19 = add i64 %indvars.iv18, 1\r\n %0 = trunc i64 %indvars.iv18 to i32\r\n %cmp323.us.us.i = icmp slt i32 %0, 1\r\n br i1 %cmp323.us.us.i, label %for.body326.us.us.i, label %for.body300.us.us.i\r\n}\r\n\r\nattributes #0 = { \"target-features\"=\"+64bit,+a,+c,+d,+f,+m,+relax,+v,+zicsr,+zifencei,+zve32f,+zve32x,+zve64d,+zve64f,+zve64x,+zvl128b,+zvl256b,+zvl32b,+zvl64b,-e,-experimental-smmpm,-experimental-smnpm,-experimental-ssnpm,-experimental-sspm,-experimental-ssqosid,-experimental-supm,-experimental-zaamo,-experimental-zabha,-experimental-zalasr,-experimental-zalrsc,-experimental-zcmop,-experimental-zfbfmin,-experimental-zicfilp,-experimental-zicfiss,-experimental-zimop,-experimental-ztso,-experimental-zvfbfmin,-experimental-zvfbfwma,-h,-shcounterenw,-shgatpa,-shtvala,-shvsatpa,-shvstvala,-shvstvecd,-smaia,-smepmp,-ssaia,-ssccptr,-sscofpmf,-sscounterenw,-ssstateen,-ssstrict,-sstc,-sstvala,-sstvecd,-ssu64xl,-svade,-svadu,-svbare,-svinval,-svnapot,-svpbmt,-xcvalu,-xcvbi,-xcvbitmanip,-xcvelw,-xcvmac,-xcvmem,-xcvsimd,-xsfcease,-xsfvcp,-xsfvfnrclipxfqf,-xsfvfwmaccqqq,-xsfvqmaccdod,-xsfvqmaccqoq,-xsifivecdiscarddlone,-xsifivecflushdlone,-xtheadba,-xtheadbb,-xtheadbs,-xtheadcmo,-xtheadcondmov,-xtheadfmemidx,-xtheadmac,-xtheadmemidx,-xtheadmempair,-xtheadsync,-xtheadvdot,-xventanacondops,-za128rs,-za64rs,-zacas,-zawrs,-zba,-zbb,-zbc,-zbkb,-zbkc,-zbkx,-zbs,-zca,-zcb,-zcd,-zce,-zcf,-zcmp,-zcmt,-zdinx,-zfa,-zfh,-zfhmin,-zfinx,-zhinx,-zhinxmin,-zic64b,-zicbom,-zicbop,-zicboz,-ziccamoa,-ziccif,-zicclsm,-ziccrse,-zicntr,-zicond,-zihintntl,-zihintpause,-zihpm,-zk,-zkn,-zknd,-zkne,-zknh,-zkr,-zks,-zksed,-zksh,-zkt,-zmmul,-zvbb,-zvbc,-zvfh,-zvfhmin,-zvkb,-zvkg,-zvkn,-zvknc,-zvkned,-zvkng,-zvknha,-zvknhb,-zvks,-zvksc,-zvksed,-zvksg,-zvksh,-zvkt,-zvl1024b,-zvl16384b,-zvl2048b,-zvl32768b,-zvl4096b,-zvl512b,-zvl65536b,-zvl8192b\" }\r\n```\r\n\r\nBacktrace:\r\n```\r\nopt: /scratch/tc-testing/tc-apr-2/llvm/llvm/lib/Transforms/Vectorize/VPlan.h:1131: bool llvm::VPRecipeWithIRFlags::isDisjoint() const: Assertion `OpType == OperationType::DisjointOp && \"recipe cannot have a disjoing flag\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0. Program arguments: /scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt reduced.ll --passes=loop-vectorize\r\n #0 0x00005bd204995b60 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2d84b60)\r\n #1 0x00005bd204992f6f llvm::sys::RunSignalHandlers() (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2d81f6f)\r\n #2 0x00005bd2049930c5 SignalHandler(int) Signals.cpp:0:0\r\n #3 0x000076eef1a42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\r\n #4 0x000076eef1a969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76\r\n #5 0x000076eef1a969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10\r\n #6 0x000076eef1a969fc pthread_kill ./nptl/pthread_kill.c:89:10\r\n #7 0x000076eef1a42476 gsignal ./signal/../sysdeps/posix/raise.c:27:6\r\n #8 0x000076eef1a287f3 abort ./stdlib/abort.c:81:7\r\n #9 0x000076eef1a2871b _nl_load_domain ./intl/loadmsgcat.c:1177:9\r\n#10 0x000076eef1a39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)\r\n#11 0x00005bd203b25ea2 llvm::VPlanTransforms::dropPoisonGeneratingRecipes(llvm::VPlan&, llvm::function_ref<bool (llvm::BasicBlock*)>)::'lambda'(llvm::VPRecipeBase*)::operator()(llvm::VPRecipeBase*) const VPlanTransforms.cpp:0:0\r\n#12 0x00005bd203b2c77d llvm::VPlanTransforms::dropPoisonGeneratingRecipes(llvm::VPlan&, llvm::function_ref<bool (llvm::BasicBlock*)>) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1f1b77d)\r\n#13 0x00005bd203a05435 llvm::LoopVectorizationPlanner::tryToBuildVPlanWithVPRecipes(llvm::VFRange&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1df4435)\r\n#14 0x00005bd203a05c9e llvm::LoopVectorizationPlanner::buildVPlansWithVPRecipes(llvm::ElementCount, llvm::ElementCount) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1df4c9e)\r\n#15 0x00005bd203a0c319 llvm::LoopVectorizationPlanner::plan(llvm::ElementCount, unsigned int) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1dfb319)\r\n#16 0x00005bd203a0f8a9 llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1dfe8a9)\r\n#17 0x00005bd203a1273e llvm::LoopVectorizePass::runImpl(llvm::Function&, llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo*, llvm::TargetLibraryInfo*, llvm::DemandedBits&, llvm::AssumptionCache&, llvm::LoopAccessInfoManager&, llvm::OptimizationRemarkEmitter&, llvm::ProfileSummaryInfo*) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1e0173e)\r\n#18 0x00005bd203a1388d llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x1e0288d)\r\n#19 0x00005bd20291a276 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0xd09276)\r\n#20 0x00005bd2047bc141 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2bab141)\r\n#21 0x00005bd202911bd6 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0xd00bd6)\r\n#22 0x00005bd2047bae3b llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2ba9e3b)\r\n#23 0x00005bd202919dc6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0xd08dc6)\r\n#24 0x00005bd2047b8cb1 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x2ba7cb1)\r\n#25 0x00005bd202193ce5 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x582ce5)\r\n#26 0x00005bd202186316 optMain (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x575316)\r\n#27 0x000076eef1a29d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16\r\n#28 0x000076eef1a29e40 call_init ./csu/../csu/libc-start.c:128:20\r\n#29 0x000076eef1a29e40 __libc_start_main ./csu/../csu/libc-start.c:379:5\r\n#30 0x00005bd20217bf95 _start (/scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt+0x56af95)\r\nzsh: IOT instruction (core dumped) /scratch/tc-testing/tc-apr-2/build-rv64gcv/build-llvm-linux/bin/opt reduced.l\r\n```\r\n\r\nGodbolt: https://godbolt.org/z/jj39h3z7M\r\n\r\nMinor spelling nit: `disjoing -> disjoint`\r\n\r\nFound via fuzzer.\r\n\r\nLikely caused/exposed by https://github.com/llvm/llvm-project/commit/6ef829941b38f7e8a28c4cba1ff25cd0ae9f7d3d https://github.com/llvm/llvm-project/pull/83821 @fhahn ", "author": "patrick-rivos", "labels": [ "vectorizers", "crash" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "9e03920cbf946e7ba282e99213707643a23ae5fb", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 12466, 12472 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::isGatherShuffledSingleRegisterEntry" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/root-gather-reused-scalar.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu < %s" ], "tests": [ { "test_name": "test", "test_body": "define void @test(ptr %a, i32 %0, i32 %1, i1 %cmp1) {\nentry:\n %2 = load i32, ptr %a, align 4\n %tobool10.not = icmp eq i32 %0, 0\n %cmp4.3 = icmp ne i32 %1, 0\n %3 = and i1 %cmp4.3, %tobool10.not\n %cmp2.2 = xor i1 %tobool10.not, true\n %conv3.2 = zext i1 %cmp2.2 to i32\n %cmp4.2 = icmp ne i32 %2, %conv3.2\n %cmp2.1 = xor i1 %cmp1, true\n %conv3.1 = zext i1 %cmp2.1 to i32\n %cmp4.1 = icmp ne i32 %2, %conv3.1\n %4 = select i1 %3, i1 %cmp4.2, i1 false\n %5 = select i1 %4, i1 %cmp4.1, i1 false\n %and.3 = zext i1 %5 to i32\n store i32 %and.3, ptr %a, align 4\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "clang crashes on valid code at -O2 on x86_64-linux-gnu: Assertion `TEPtr->UserTreeIndices.size() == 1 && \"Expected only single user of a gather node.\"' failed ", "body": "It appears to be a recent regression as it doesn't reproduce with 19.1.0 and earlier. \r\n\r\nCompiler Explorer: https://godbolt.org/z/a1W3c5ard\r\n\r\n```\r\n[523] % clangtk -v\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git df8b785838a2db01b4d056e603f7317209accefb)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nFound candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9\r\nSelected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11\r\nCandidate multilib: .;@m64\r\nSelected multilib: .;@m64\r\n[524] % \r\n[524] % clangtk -O2 small.c\r\nclang-20: /local/suz-local/software/clangbuild/llvm-project/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:12559: std::optional<llvm::TargetTransformInfo::ShuffleKind> llvm::slpvectorizer::BoUpSLP::isGatherShuffledSingleRegisterEntry(const llvm::slpvectorizer::BoUpSLP::TreeEntry*, llvm::ArrayRef<llvm::Value*>, llvm::MutableArrayRef<int>, llvm::SmallVectorImpl<const llvm::slpvectorizer::BoUpSLP::TreeEntry*>&, unsigned int, bool): Assertion `TEPtr->UserTreeIndices.size() == 1 && \"Expected only single user of a gather node.\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0.\tProgram arguments: /local/suz-local/software/local/clang-trunk/bin/clang-20 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/20241020-clangtk-m64-O2-build-231331/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/20241020-clangtk-m64-O2-build-231331/delta -resource-dir /local/suz-local/software/local/clang-trunk/lib/clang/20 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/suz-local/software/local/clang-trunk/lib/clang/20/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-572b89.o -x c small.c\r\n1.\t<eof> parser at end of file\r\n2.\tOptimizer\r\n3.\tRunning pass \"function<eager-inv>(float2int,lower-constant-intrinsics,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-verify-fixpoint>,loop-unroll<O2>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"small.c\"\r\n4.\tRunning pass \"slp-vectorizer\" on function \"main\"\r\n #0 0x0000560576c8b9af llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x43f29af)\r\n #1 0x0000560576c89184 SignalHandler(int) Signals.cpp:0:0\r\n #2 0x00007f4623c27420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)\r\n #3 0x00007f462365e00b raise /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1\r\n #4 0x00007f462363d859 abort /build/glibc-LcI20x/glibc-2.31/stdlib/abort.c:81:7\r\n #5 0x00007f462363d729 get_sysdep_segment_value /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:509:8\r\n #6 0x00007f462363d729 _nl_load_domain /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:970:34\r\n #7 0x00007f462364efd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)\r\n #8 0x0000560578707edc llvm::slpvectorizer::BoUpSLP::isGatherShuffledSingleRegisterEntry(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::ArrayRef<llvm::Value*>, llvm::MutableArrayRef<int>, llvm::SmallVectorImpl<llvm::slpvectorizer::BoUpSLP::TreeEntry const*>&, unsigned int, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5e6eedc)\r\n #9 0x0000560578708cd8 llvm::slpvectorizer::BoUpSLP::isGatherShuffledEntry(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::ArrayRef<llvm::Value*>, llvm::SmallVectorImpl<int>&, llvm::SmallVectorImpl<llvm::SmallVector<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, 6u>>&, unsigned int, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5e6fcd8)\r\n#10 0x000056057870a6f3 llvm::InstructionCost llvm::slpvectorizer::BoUpSLP::processBuildVector<llvm::slpvectorizer::BoUpSLP::ShuffleCostEstimator, llvm::InstructionCost, llvm::TargetTransformInfo, llvm::ArrayRef<llvm::Value*>, llvm::slpvectorizer::BoUpSLP, llvm::SmallPtrSetImpl<llvm::Value*>>(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::Type*, llvm::TargetTransformInfo&, llvm::ArrayRef<llvm::Value*>&, llvm::slpvectorizer::BoUpSLP&, llvm::SmallPtrSetImpl<llvm::Value*>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5e716f3)\r\n#11 0x000056057870cde7 llvm::slpvectorizer::BoUpSLP::getEntryCost(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::ArrayRef<llvm::Value*>, llvm::SmallPtrSetImpl<llvm::Value*>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5e73de7)\r\n#12 0x0000560578745f69 llvm::slpvectorizer::BoUpSLP::getTreeCost(llvm::ArrayRef<llvm::Value*>) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5eacf69)\r\n#13 0x000056057874b57b (anonymous namespace)::HorizontalReduction::tryToReduce(llvm::slpvectorizer::BoUpSLP&, llvm::DataLayout const&, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo const&) SLPVectorizer.cpp:0:0\r\n#14 0x000056057874eb79 llvm::SLPVectorizerPass::vectorizeHorReduction(llvm::PHINode*, llvm::Instruction*, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&, llvm::SmallVectorImpl<llvm::WeakTrackingVH>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5eb5b79)\r\n#15 0x000056057875349b llvm::SLPVectorizerPass::vectorizeRootInstruction(llvm::PHINode*, llvm::Instruction*, llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (.constprop.0) SLPVectorizer.cpp:0:0\r\n#16 0x0000560578757d50 llvm::SLPVectorizerPass::vectorizeChainsInBlock(llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5ebed50)\r\n#17 0x000056057875e590 llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0\r\n#18 0x000056057875f263 llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5ec6263)\r\n#19 0x00005605781e0e66 llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5947e66)\r\n#20 0x0000560576614891 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3d7b891)\r\n#21 0x000056057410e656 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x1875656)\r\n#22 0x00005605766131fd llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3d7a1fd)\r\n#23 0x000056057410d196 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x1874196)\r\n#24 0x0000560576612c31 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x3d79c31)\r\n#25 0x0000560576f44dd3 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#26 0x0000560576f483a8 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x46af3a8)\r\n#27 0x000056057764462c clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4dab62c)\r\n#28 0x000056057951629c clang::ParseAST(clang::Sema&, bool, bool) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x6c7d29c)\r\n#29 0x0000560577644a48 clang::CodeGenAction::ExecuteAction() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4daba48)\r\n#30 0x000056057790d3d9 clang::FrontendAction::Execute() (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x50743d9)\r\n#31 0x00005605778895ce clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x4ff05ce)\r\n#32 0x00005605779f9f26 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x5160f26)\r\n#33 0x0000560573cd1fe5 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x1438fe5)\r\n#34 0x0000560573cc9afa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#35 0x0000560573cce52e clang_main(int, char**, llvm::ToolContext const&) (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x143552e)\r\n#36 0x0000560573bba67b main (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x132167b)\r\n#37 0x00007f462363f083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3\r\n#38 0x0000560573cc958e _start (/local/suz-local/software/local/clang-trunk/bin/clang-20+0x143058e)\r\nclangtk: error: unable to execute command: Aborted\r\nclangtk: error: clang frontend command failed due to signal (use -v to see invocation)\r\nclang version 20.0.0git (https://github.com/llvm/llvm-project.git df8b785838a2db01b4d056e603f7317209accefb)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /local/suz-local/software/local/clang-trunk/bin\r\nBuild config: +assertions\r\nclangtk: note: diagnostic msg: \r\n********************\r\n\r\nPLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\r\nPreprocessed source(s) and associated run script(s) are located at:\r\nclangtk: note: diagnostic msg: /tmp/small-d99d4e.c\r\nclangtk: note: diagnostic msg: /tmp/small-d99d4e.sh\r\nclangtk: note: diagnostic msg: \r\n\r\n********************\r\n[525] % \r\n[525] % cat small.c\r\nint a, b, c, d, e, f;\r\nint main() {\r\n for (f = 0; f < 4; f++) {\r\n d &= (((a > 0) != b) != c) && b;\r\n for (b = 0; b < 1; b++)\r\n if (e)\r\n break;\r\n }\r\n return 0;\r\n}\r\n```\r\n\r\n", "author": "zhendongsu", "labels": [ "llvm:SLPVectorizer", "crash-on-valid" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "f381cd069965dabfeb277f30a4e532d7fd498f6e", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 16055, 16069 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "BoUpSLP::computeMinimumValueSizes" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/minbw-user-non-sizable.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu < %s -slp-threshold=-100" ], "tests": [ { "test_name": "test", "test_body": "define void @test(ptr %i) {\nbb:\n %i1 = getelementptr i8, ptr %i, i64 4\n br label %bb2\n\nbb2: ; preds = %bb2, %bb\n %i3 = phi i32 [ %i6, %bb2 ], [ 0, %bb ]\n %i4 = phi i32 [ %i8, %bb2 ], [ 0, %bb ]\n store i32 %i3, ptr %i, align 4\n store i32 %i4, ptr %i1, align 4\n %i5 = trunc i32 0 to i1\n %i6 = select i1 %i5, i32 0, i32 0\n %i7 = trunc i32 %i4 to i1\n %i8 = select i1 %i7, i32 0, i32 0\n br label %bb2\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLP] Cannot getTypeInfo() on a type that is unsized!", "body": "I tried the following IR with SLP:\r\n\r\n```llvm\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\ndefine void @foo(ptr %i) {\r\nbb:\r\n %i1 = getelementptr i8, ptr %i, i64 4\r\n br label %bb2\r\n\r\nbb2: ; preds = %bb2, %bb\r\n %i3 = phi i32 [ %i6, %bb2 ], [ 0, %bb ]\r\n %i4 = phi i32 [ %i8, %bb2 ], [ 0, %bb ]\r\n store i32 %i3, ptr %i\r\n store i32 %i4, ptr %i1\r\n %i5 = trunc i32 0 to i1\r\n %i6 = select i1 %i5, i32 0, i32 0\r\n %i7 = trunc i32 %i4 to i1\r\n %i8 = select i1 %i7, i32 0, i32 0\r\n br label %bb2\r\n}\r\n```\r\n\r\nIt failed with an error output:`Ty->isSized() && \"Cannot getTypeInfo() on a type that is unsized!\"' failed`. It's getting the size returned by the `store i32 %i4, ptr %i1` instruction.​\r\n\r\nhttps://llvm.godbolt.org/z/fMx9qMcfK\r\n\r\ncc f6e01b9ece1e73f6eda6e1dbff3aa72e917f4007 @alexey-bataev\r\n", "author": "DianQK", "labels": [ "release:backport", "llvm:SLPVectorizer", "crash-on-valid" ], "comments": [ { "author": "dtcxzyw", "body": "https://github.com/llvm/llvm-project/blob/2cbd1bc830861bc08f78fb6cc11747b82f66c4c6/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp#L16067\r\n\r\n`U` is `store i32 %i4, ptr %i1`.\r\n" }, { "author": "DianQK", "body": "Reverting f6e01b9ece1e73f6eda6e1dbff3aa72e917f4007 seems reasonable to me. What do you think? @alexey-bataev ^^" }, { "author": "alexey-bataev", "body": "will fix it asap today" } ] }

[ "llvm/test/Transforms/LoopUnroll" ]

{ "fix_commit": "5bcc82d43388bb0daa122d5fe7ecda5eca27fc16", "components": [ "LoopPeel" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": [ [ 859, 865 ] ], "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": [ "cloneLoopBlocks" ], "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopUnroll/pr109333.ll", "commands": [ "opt -S -passes=\"print<scalar-evolution>,loop-unroll\" -unroll-runtime < %s 2>&1" ], "tests": [ { "test_name": "test", "test_body": "define void @test(i1 %c, ptr %p) {\nentry:\n br label %loop.1\n\nloop.1: ; preds = %loop.1, %entry\n %phi = phi ptr [ null, %entry ], [ %p, %loop.1 ]\n %load = load i64, ptr %p, align 8\n %add = add i64 %load, 1\n br i1 %c, label %if, label %loop.1\n\nif: ; preds = %loop.1\n %add.lcssa = phi i64 [ %add, %loop.1 ]\n %gep = getelementptr i64, ptr %p, i64 %add.lcssa\n br label %loop.2\n\nloop.2: ; preds = %loop.2, %if\n %iv = phi ptr [ %p, %if ], [ %iv.next, %loop.2 ]\n %iv.next = getelementptr i8, ptr %iv, i64 8\n %icmp = icmp eq ptr %iv, %gep\n br i1 %icmp, label %exit, label %loop.2\n\nexit: ; preds = %loop.2\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "LTO error: Instruction does not dominate all uses", "body": "clang crashes while linking\r\n```\r\nclang: error: unable to execute command: Aborted (core dumped)\r\nclang: error: linker command failed due to signal (use -v to see invocation)\r\n```\r\nI followed the instructions [here](https://llvm.org/docs/HowToSubmitABug.html) and narrowed it down to an LTO bug. File to reproduce is attached. [a.out.0.2.internalize-reduced.bc.tar.gz](https://github.com/user-attachments/files/17066318/a.out.0.2.internalize-reduced.bc.tar.gz)\r\n```\r\n$ opt \"-passes=lto<O3>\" a.out.0.2.internalize-reduced.bc\r\nWARNING: You're attempting to print out a bitcode file.\r\nThis is inadvisable as it may cause display problems. If\r\nyou REALLY want to taste LLVM bitcode first-hand, you\r\ncan force output with the `-f' option.\r\n\r\nInstruction does not dominate all uses!\r\n %.lcssa16 = phi i64 [ %12, %9 ]\r\n %27 = add i64 %.lcssa16, 2\r\nLLVM ERROR: Broken module found, compilation aborted!\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.\r\nStack dump:\r\n0. Program arguments: opt -passes=lto<O3> reduced-redacted.bc #0 0x00007e899efc4d90 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /usr/src/debug/llvm/llvm-18.1.8.src/lib/Support/Unix/Signals.inc:723:22\r\n #1 0x00007e899efc1d4d llvm::sys::RunSignalHandlers() /usr/src/debug/llvm/llvm-18.1.8.src/lib/Support/Signals.cpp:105:20\r\n #2 0x00007e899efc1d4d SignalHandler /usr/src/debug/llvm/llvm-18.1.8.src/lib/Support/Unix/Signals.inc:403:31\r\n #3 0x00007e899e24c1d0 (/usr/lib/libc.so.6+0x3d1d0)\r\n #4 0x00007e899e2a53f4 __pthread_kill_implementation /usr/src/debug/glibc/glibc/nptl/pthread_kill.c:44:76\r\n #5 0x00007e899e24c120 raise /usr/src/debug/glibc/glibc/signal/../sysdeps/posix/raise.c:27:6\r\n #6 0x00007e899e2334c3 abort /usr/src/debug/glibc/glibc/stdlib/abort.c:81:7\r\n #7 0x00007e899ecaba1b std::mutex::lock() /usr/include/c++/14.1.1/bits/std_mutex.h:117:22\r\n #8 0x00007e899ecaba1b std::lock_guard<std::mutex>::lock_guard(std::mutex&) /usr/include/c++/14.1.1/bits/std_mutex.h:250:23\r\n #9 0x00007e899ecaba1b llvm::install_bad_alloc_error_handler(void (*)(void*, char const*, bool), void*) /usr/src/debug/llvm/llvm-18.1.8.src/lib/Support/ErrorHandling.cpp:131:61\r\n#10 0x00007e899eec070e (/usr/lib/libLLVM.so.18.1+0x6c070e)\r\n#11 0x00007e899f21aa1b (/usr/lib/libLLVM.so.18.1+0xa1aa1b)\r\n#12 0x000055a86e4acf57 llvm::detail::PassModel<llvm::Module, llvm::VerifierPass, llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm:\r\n:Module>&) /usr/src/debug/llvm/llvm-18.1.8.src/include/llvm/IR/PassManagerInternal.h:90:3\r\n#13 0x00007e899f1d767e llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /usr/src/debug/llvm/llvm-18.1.8.src/incl\r\nude/llvm/IR/PassManager.h:547:20\r\n#14 0x000055a86e4b7052 llvm::SmallPtrSetImplBase::isSmall() const /usr/src/debug/llvm/llvm-18.1.8.src/include/llvm/ADT/SmallPtrSet.h:195:33\r\n#15 0x000055a86e4b7052 llvm::SmallPtrSetImplBase::~SmallPtrSetImplBase() /usr/src/debug/llvm/llvm-18.1.8.src/include/llvm/ADT/SmallPtrSet.h:83:17\r\n#16 0x000055a86e4b7052 llvm::SmallPtrSetImpl<llvm::AnalysisKey*>::~SmallPtrSetImpl() /usr/src/debug/llvm/llvm-18.1.8.src/include/llvm/ADT/SmallPtrSet.h:345:7\r\n#17 0x000055a86e4b7052 llvm::SmallPtrSet<llvm::AnalysisKey*, 2u>::~SmallPtrSet() /usr/src/debug/llvm/llvm-18.1.8.src/include/llvm/ADT/SmallPtrSet.h:451:7\r\n#18 0x000055a86e4b7052 llvm::PreservedAnalyses::~PreservedAnalyses() /usr/src/debug/llvm/llvm-18.1.8.src/include/llvm/IR/PassManager.h:172:7\r\n#19 0x000055a86e4b7052 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutpu\r\ntFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) /usr/src/debug/llvm/llvm-18.1.8\r\n.src/tools/opt/NewPMDriver.cpp:527:10\r\n#20 0x000055a86e4ab1ed std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>::~basic_string() /usr/include/c++/14.1.1/bits/basic_string.h:809:19\r\n#21 0x000055a86e4ab1ed main /usr/src/debug/llvm/llvm-18.1.8.src/tools/opt/opt.cpp:747:3\r\n#22 0x00007e899e234e08 __libc_start_call_main /usr/src/debug/glibc/glibc/csu/../sysdeps/nptl/libc_start_call_main.h:74:3\r\n#23 0x00007e899e234ecc call_init /usr/src/debug/glibc/glibc/csu/../csu/libc-start.c:128:20\r\n#24 0x00007e899e234ecc __libc_start_main /usr/src/debug/glibc/glibc/csu/../csu/libc-start.c:347:5\r\n#25 0x000055a86e4abfd5 _start (/usr/bin/opt+0x1cfd5)\r\nAborted (core dumped)\r\n```\r\nThis happened after adding `-fsplit-lto-unit` to some parts of my code base.\r\n", "author": "googlebleh", "labels": [ "loopoptim", "release:backport", "llvm:crash" ], "comments": [ { "author": "googlebleh", "body": "While bisecting using this reduced test case, I was able to reproduce this crash on several versions of LLVM between 15 and 18.1.8. I was also able to reproduce on the tip of `main` (e439fdf4ea0dbc6f001428f4d4956700bf26bb97). However, this crash did not reproduce on 15.0.7. The commit on 15.0.7 that \"fixed\" the issue is\r\n```\r\ncommit f3c5289e78462fb96015f79c954d95a0d527ba55 \r\nAuthor: Martin Storsjö <[email protected]> \r\nDate: Wed Oct 5 14:44:21 2022 +0300 \r\n \r\n Revert \"Recommit \"[SCEV] Look through single value PHIs.\" (take 3)\" \r\n \r\n This reverts commit 20d798bd47ec5191de1b2a8a031da06a04e612e1. \r\n \r\n This commit caused crashes in some cases, see github issue #58152. \r\n This is fixed on main, but backporting it requires multiple \r\n nontrivial cherrypicks. \r\n \r\n Updating llvm/test/Transforms/LoopVectorize/create-induction-resume.ll \r\n with update_test_checks.py, so this isn't an exact automatic revert, \r\n as that test case was added after the reverted commit. \r\n \r\n This fixes #58152 for the release branch. \r\n \r\n llvm/lib/Analysis/ScalarEvolution.cpp | 7 ++-\r\n llvm/test/Analysis/DependenceAnalysis/lcssa.ll | 2 +- \r\n llvm/test/Analysis/ScalarEvolution/cycled_phis.ll | 4 +- \r\n .../ScalarEvolution/incorrect-exit-count.ll | 2 +- \r\n .../Analysis/ScalarEvolution/solve-quadratic-i1.ll | 4 +- \r\n .../ScalarEvolution/solve-quadratic-overflow.ll | 6 +-- \r\n llvm/test/Analysis/ScalarEvolution/trivial-phis.ll | 2 +- \r\n llvm/test/Transforms/LoopStrengthReduce/funclet.ll | 40 +++++++++-------\r\n .../LoopVectorize/create-induction-resume.ll | 24 ++++------\r\n llvm/test/Transforms/LoopVectorize/pr45259.ll | 55 +++++++++++-----------\r\n 10 files changed, 75 insertions(+), 71 deletions(-)\r\n```\r\nspecifically, this (almost) 1-line diff\r\n```diff\r\ndiff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp\r\nindex 4b2db80bc1ec..3b73f9511eca 100644\r\n--- a/llvm/lib/Analysis/ScalarEvolution.cpp\r\n+++ b/llvm/lib/Analysis/ScalarEvolution.cpp\r\n@@ -6023,8 +6023,13 @@ const SCEV *ScalarEvolution::createNodeForPHI(PHINode *PN) {\r\n if (const SCEV *S = createAddRecFromPHI(PN))\r\n return S;\r\n \r\n+ // If the PHI has a single incoming value, follow that value, unless the\r\n+ // PHI's incoming blocks are in a different loop, in which case doing so\r\n+ // risks breaking LCSSA form. Instcombine would normally zap these, but\r\n+ // it doesn't have DominatorTree information, so it may miss cases.\r\n if (Value *V = simplifyInstruction(PN, {getDataLayout(), &TLI, &DT, &AC}))\r\n- return getSCEV(V);\r\n+ if (LI.replacementPreservesLCSSAForm(PN, V))\r\n+ return getSCEV(V);\r\n \r\n if (const SCEV *S = createNodeFromSelectLikePHI(PN))\r\n return S;\r\n```\r\n" }, { "author": "nikic", "body": "Reduced:\r\n```llvm\r\n; RUN: opt -passes=\"print<scalar-evolution>,loop-unroll\" -unroll-runtime\r\ndefine void @test(i1 %c, ptr %p) {\r\nentry:\r\n br label %loop\r\n\r\nloop:\r\n %phi = phi ptr [ null, %entry ], [ %p, %loop ]\r\n %load = load i64, ptr %p, align 8\r\n %add = add i64 %load, 1\r\n br i1 %c, label %bb2, label %loop\r\n\r\nbb2:\r\n %add.lcssa = phi i64 [ %add, %loop ]\r\n %gep = getelementptr i64, ptr %p, i64 %add.lcssa\r\n br label %loop2\r\n\r\nloop2:\r\n %iv = phi ptr [ %p, %bb2 ], [ %iv.next, %loop2 ]\r\n %iv.next = getelementptr i8, ptr %iv, i64 8\r\n %icmp = icmp eq ptr %iv, %gep\r\n br i1 %icmp, label %exit, label %loop2\r\n\r\nexit:\r\n ret void\r\n}\r\n```" }, { "author": "nikic", "body": "From a cursory look, the problem here is that the BECount of `loop2` depends on `%load`, and after peeling it should instead depend on a phi node, but instead still depends on `%load`. As the BECount does not dominate the loop, SCEV is invalid.\r\n\r\nThis issue sounds very familiar, we've fixed variants of this in the past." } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "2131115be5b9d8b39af80973d9b64c0adc41d38d", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": [ [ 1039, 1049 ] ], "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, 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null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/fsh.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "fshl_range_trunc", "test_body": "; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.fshl.i32(i32, i32, i32) #0\n\ndefine i8 @fshl_range_trunc(i1 %x) {\n %zext = zext i1 %x to i32\n %or = or disjoint i32 %zext, -2\n %fshl = call range(i32 -4, 2) i32 @llvm.fshl.i32(i32 %or, i32 %or, i32 1)\n %tr = trunc nsw i32 %fshl to i8\n ret i8 %tr\n}\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[clang] Miscompile with -O2/3/s", "body": "This code prints random value at `-O2/3/s` and -1 at `-O0/1`:\n\n```c\nint printf(const char *, ...);\nint a, b;\nvoid c(char d) { a = d; }\nint e(int d) {\n if (d < 0)\n return 1;\n return 0;\n}\nint f() {\n if (b)\n return 0;\n return 1;\n}\nint g(int d) {\n int h = 0;\n if (3 + d)\n h = f() - 1 - 1;\n return e(h) + h + h;\n}\nint main() {\n int i = g(0);\n c(i);\n printf(\"%d\\n\", a);\n}\n```\n\nCompiler Explorer: https://godbolt.org/z/KfWsKxcvE\n\nIt starts from x86_64 clang 19.1.0. ", "author": "cardigan1008", "labels": [ "miscompilation", "llvm:instcombine", "regression:19" ], "comments": [ { "author": "MaskRay", "body": "InstCombine miscompiles \n\n```llvm\ndefine i32 @src(i32 %x) local_unnamed_addr {\nentry:\n %cmp = icmp eq i32 %x, 0\n %zext = zext i1 %cmp to i32\n %or = or disjoint i32 %zext, -2\n %fshl = call range(i32 -4, 2) i32 @llvm.fshl.i32(i32 %or, i32 %or, i32 1)\n %tr = trunc nsw i32 %fshl to i8\n %res = sext i8 %tr to i32\n ret i32 %res\n}\n```\n\nedit: `g` has a Range return attribute, which is propagated to the call site in `main` after inlining.\nInstCombine `InstCombinerImpl::SimplifyDemandedUseBits` simplifies the operand, but keeps the no-longer-valid Range return attribute.\n\nThen, CorrelatedValuePropagationPass added nsw, and the value eventually becomes poison." }, { "author": "nikic", "body": "Slightly reduced: https://alive2.llvm.org/ce/z/3Kf7-2\n\nI assume the problem is that we don't clear the return range attribute in SimplifyDemanded." } ] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "b5f4210e9f51f938ae517f219f04f9ab431a2684", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": [ [ 3343, 3349 ], [ 3366, 3371 ], [ 3379, 3384 ], [ 3448, 3461 ] ], "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": [ "foldBitCeil", "isSafeToRemoveBitCeilSelect" ], "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/bit_ceil.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "pr91691", "test_body": "define i32 @pr91691(i32 %0) {\n %2 = sub nuw i32 -2, %0\n %3 = tail call i32 @llvm.ctlz.i32(i32 %2, i1 false)\n %4 = sub i32 32, %3\n %5 = shl i32 1, %4\n %6 = icmp ult i32 %0, -2\n %7 = select i1 %6, i32 %5, i32 1\n ret i32 %7\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctlz.i32(i32, i1 immarg) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "bit_ceil_v4i32", "test_body": "define <4 x i32> @bit_ceil_v4i32(<4 x i32> %x) {\n %dec = add <4 x i32> %x, splat (i32 -1)\n %ctlz = tail call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %dec, i1 false)\n %sub = sub <4 x i32> splat (i32 32), %ctlz\n %shl = shl <4 x i32> splat (i32 1), %sub\n %ugt = icmp ugt <4 x i32> %x, splat (i32 1)\n %sel = select <4 x i1> %ugt, <4 x i32> %shl, <4 x i32> splat (i32 1)\n ret <4 x i32> %sel\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare <4 x i32> @llvm.ctlz.v4i32(<4 x i32>, i1 immarg) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "pr91691_keep_nsw", "test_body": "define i32 @pr91691_keep_nsw(i32 %0) {\n %2 = sub nsw i32 -2, %0\n %3 = tail call i32 @llvm.ctlz.i32(i32 %2, i1 false)\n %4 = sub i32 32, %3\n %5 = shl i32 1, %4\n %6 = icmp ult i32 %0, -2\n %7 = select i1 %6, i32 %5, i32 1\n ret i32 %7\n}\n\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\ndeclare i32 @llvm.ctlz.i32(i32, i1 immarg) #0\n\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "instcombine removes a select, making code more poisonous", "body": "https://alive2.llvm.org/ce/z/c__jy8\r\n\r\nthis function:\r\n```llvm\r\ndefine i32 @f(i32 %0) {\r\n %2 = sub nuw i32 -2, %0\r\n %3 = tail call i32 @llvm.ctlz.i32(i32 %2, i1 false)\r\n %4 = sub i32 32, %3\r\n %5 = shl i32 1, %4\r\n %6 = icmp ult i32 %0, -2\r\n %7 = select i1 %6, i32 %5, i32 1\r\n ret i32 %7\r\n}\r\n\r\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\r\ndeclare i32 @llvm.ctlz.i32(i32, i1 immarg) #0\r\n\r\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\r\n```\r\n\r\nis getting rewritten to not have the select, but the select was blocking a poison value. the bad thing happens when -1 is passed as an argument, see the Alive link for a detailed execution trace\r\n\r\n```llvm\r\ndefine i32 @f(i32 %0) {\r\n %2 = sub nuw i32 -2, %0\r\n %3 = tail call range(i32 0, 33) i32 @llvm.ctlz.i32(i32 %2, i1 false)\r\n %4 = sub nsw i32 0, %3\r\n %5 = and i32 %4, 31\r\n %6 = shl nuw i32 1, %5\r\n ret i32 %6\r\n}\r\n\r\n; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)\r\ndeclare i32 @llvm.ctlz.i32(i32, i1 immarg) #0\r\n\r\nattributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }\r\n```\r\n\r\ncc @nunoplopes ", "author": "regehr", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "cc943a67d114e28c28f561c3b1a48ff2003264ce", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 3237, 3251 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ "findLaneForValue" ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/AArch64/reused-scalar-repeated-in-node.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=aarch64-unknown-linux-gnu < %s" ], "tests": [ { "test_name": "test", "test_body": "define void @test() {\nentry:\n br label %bb61\n\nbb61: ; preds = %entry\n br label %bb64\n\nbb62: ; No predecessors!\n br i1 poison, label %bb63, label %bb64\n\nbb63: ; preds = %bb62\n br label %bb64\n\nbb64: ; preds = %bb63, %bb62, %bb61\n %i = phi nsz float [ poison, %bb61 ], [ poison, %bb63 ], [ poison, %bb62 ]\n %i65 = phi nsz float [ poison, %bb61 ], [ poison, %bb63 ], [ poison, %bb62 ]\n %i66 = load float, ptr poison, align 16\n %i67 = load float, ptr poison, align 4\n %i68 = load float, ptr poison, align 8\n %i69 = load float, ptr poison, align 4\n %i70 = load float, ptr poison, align 4\n %i71 = load float, ptr poison, align 16\n %i72 = load float, ptr poison, align 4\n %i73 = load float, ptr poison, align 8\n %i74 = load float, ptr poison, align 4\n %i75 = load float, ptr poison, align 16\n %i76 = load float, ptr poison, align 4\n br i1 poison, label %bb167, label %bb77\n\nbb77: ; preds = %bb64\n br label %bb78\n\nbb78: ; preds = %bb78, %bb77\n %i79 = phi nsz float [ %i66, %bb77 ], [ %i103, %bb78 ]\n %i80 = phi nsz float [ %i67, %bb77 ], [ %i104, %bb78 ]\n %i81 = phi nsz float [ %i68, %bb77 ], [ %i105, %bb78 ]\n %i82 = phi nsz float [ poison, %bb77 ], [ %i106, %bb78 ]\n %i83 = phi nsz float [ poison, %bb77 ], [ %i123, %bb78 ]\n %i84 = phi nsz float [ %i69, %bb77 ], [ %i124, %bb78 ]\n %i85 = phi nsz float [ poison, %bb77 ], [ %i125, %bb78 ]\n %i86 = phi nsz float [ %i70, %bb77 ], [ %i126, %bb78 ]\n %i87 = fmul fast float %i79, poison\n %i88 = fmul fast float %i80, poison\n %i89 = fmul fast float %i81, poison\n %i90 = fmul fast float %i82, poison\n %i91 = fmul fast float %i83, poison\n %i92 = fadd fast float %i91, %i87\n %i93 = fmul fast float %i84, poison\n %i94 = fadd fast float %i93, %i88\n %i95 = fmul fast float %i85, poison\n %i96 = fadd fast float %i95, %i89\n %i97 = fmul fast float %i86, poison\n %i98 = fadd fast float %i97, %i90\n %i99 = fadd fast float %i92, poison\n %i100 = fadd fast float %i94, poison\n %i101 = fadd fast float %i96, poison\n %i102 = fadd fast float %i98, poison\n %i103 = fadd fast float %i99, poison\n %i104 = fadd fast float %i100, poison\n %i105 = fadd fast float %i101, poison\n %i106 = fadd fast float %i102, poison\n %i107 = fmul fast float %i79, poison\n %i108 = fmul fast float %i80, poison\n %i109 = fmul fast float %i81, poison\n %i110 = fmul fast float %i82, poison\n %i111 = fmul fast float %i83, poison\n %i112 = fadd fast float %i111, %i107\n %i113 = fmul fast float %i84, poison\n %i114 = fadd fast float %i113, %i108\n %i115 = fmul fast float %i85, poison\n %i116 = fadd fast float %i115, %i109\n %i117 = fmul fast float %i86, poison\n %i118 = fadd fast float %i117, %i110\n %i119 = fadd fast float %i112, poison\n %i120 = fadd fast float %i114, poison\n %i121 = fadd fast float %i116, poison\n %i122 = fadd fast float %i118, poison\n %i123 = fadd fast float %i119, poison\n %i124 = fadd fast float %i120, poison\n %i125 = fadd fast float %i121, poison\n %i126 = fadd fast float %i122, poison\n %i127 = fmul fast float %i79, %i\n %i128 = fmul fast float %i80, %i\n %i129 = fmul fast float %i81, %i\n %i130 = fmul fast float %i82, %i\n %i131 = fmul fast float %i83, %i65\n %i132 = fadd fast float %i131, %i127\n %i133 = fmul fast float %i84, %i65\n %i134 = fadd fast float %i133, %i128\n %i135 = fmul fast float %i85, %i65\n %i136 = fadd fast float %i135, %i129\n %i137 = fmul fast float %i86, %i65\n %i138 = fadd fast float %i137, %i130\n %i139 = fadd fast float %i132, poison\n %i140 = fadd fast float %i134, poison\n %i141 = fadd fast float %i136, poison\n %i142 = fadd fast float %i138, poison\n %i143 = fadd fast float %i139, poison\n %i144 = fadd fast float %i140, poison\n %i145 = fadd fast float %i141, poison\n %i146 = fadd fast float %i142, poison\n %i147 = fmul fast float %i79, poison\n %i148 = fmul fast float %i80, poison\n %i149 = fmul fast float %i81, poison\n %i150 = fmul fast float %i82, poison\n %i151 = fmul fast float %i83, poison\n %i152 = fadd fast float %i151, %i147\n %i153 = fmul fast float %i84, poison\n %i154 = fadd fast float %i153, %i148\n %i155 = fmul fast float %i85, poison\n %i156 = fadd fast float %i155, %i149\n %i157 = fmul fast float %i86, poison\n %i158 = fadd fast float %i157, %i150\n %i159 = fadd fast float %i152, poison\n %i160 = fadd fast float %i154, poison\n %i161 = fadd fast float %i156, poison\n %i162 = fadd fast float %i158, poison\n %i163 = fadd fast float %i159, poison\n %i164 = fadd fast float %i160, poison\n %i165 = fadd fast float %i161, poison\n %i166 = fadd fast float %i162, poison\n br i1 poison, label %bb78, label %bb167\n\nbb167: ; preds = %bb78, %bb64\n %i168 = phi nsz float [ %i76, %bb64 ], [ %i166, %bb78 ]\n %i169 = phi nsz float [ poison, %bb64 ], [ %i165, %bb78 ]\n %i170 = phi nsz float [ poison, %bb64 ], [ %i164, %bb78 ]\n %i171 = phi nsz float [ %i75, %bb64 ], [ %i163, %bb78 ]\n %i172 = phi nsz float [ %i74, %bb64 ], [ %i146, %bb78 ]\n %i173 = phi nsz float [ %i73, %bb64 ], [ %i145, %bb78 ]\n %i174 = phi nsz float [ %i72, %bb64 ], [ %i144, %bb78 ]\n %i175 = phi nsz float [ %i71, %bb64 ], [ %i143, %bb78 ]\n %i176 = phi nsz float [ %i70, %bb64 ], [ %i126, %bb78 ]\n %i177 = phi nsz float [ poison, %bb64 ], [ %i125, %bb78 ]\n %i178 = phi nsz float [ %i69, %bb64 ], [ %i124, %bb78 ]\n %i179 = phi nsz float [ poison, %bb64 ], [ %i123, %bb78 ]\n %i180 = phi nsz float [ poison, %bb64 ], [ %i106, %bb78 ]\n %i181 = phi nsz float [ %i68, %bb64 ], [ %i105, %bb78 ]\n %i182 = phi nsz float [ %i67, %bb64 ], [ %i104, %bb78 ]\n %i183 = phi nsz float [ %i66, %bb64 ], [ %i103, %bb78 ]\n store float %i182, ptr poison, align 1\n store float %i174, ptr poison, align 1\n br i1 poison, label %bb186, label %bb184\n\nbb184: ; preds = %bb167\n br label %bb185\n\nbb185: ; preds = %bb185, %bb184\n br i1 poison, label %bb185, label %bb186\n\nbb186: ; preds = %bb185, %bb167\n %i187 = phi nsz float [ %i178, %bb167 ], [ poison, %bb185 ]\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SLP] Assertion \"All elements in mask must be less than CommonVF.\" failed", "body": "[PR77529](https://github.com/llvm/llvm-project/pull/77529) trigger assertion on \"All elements in mask must be less than CommonVF.\" failed.\r\n\r\n@alexey-bataev \r\n\r\nTo reproduce, run with: opt -S -passes=slp-vectorizer t.ll -o o.ll\r\nUsing reduced t.ll below\r\n```\r\ntarget datalayout = \"e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32\"\r\ntarget triple = \"aarch64-unknown-linux-gnu\"\r\n\r\ndefine void @test() {\r\nentry:\r\n br label %bb61\r\n\r\nbb61:\r\n br label %bb64\r\n\r\nbb62:\r\n br i1 poison, label %bb63, label %bb64\r\n\r\nbb63:\r\n br label %bb64\r\n\r\nbb64:\r\n %i = phi nsz float [ poison, %bb61 ], [ poison, %bb63 ], [ poison, %bb62 ]\r\n %i65 = phi nsz float [ poison, %bb61 ], [ poison, %bb63 ], [ poison, %bb62 ]\r\n %i66 = load float, ptr poison, align 16\r\n %i67 = load float, ptr poison, align 4\r\n %i68 = load float, ptr poison, align 8\r\n %i69 = load float, ptr poison, align 4\r\n %i70 = load float, ptr poison, align 4\r\n %i71 = load float, ptr poison, align 16\r\n %i72 = load float, ptr poison, align 4\r\n %i73 = load float, ptr poison, align 8\r\n %i74 = load float, ptr poison, align 4\r\n %i75 = load float, ptr poison, align 16\r\n %i76 = load float, ptr poison, align 4\r\n br i1 poison, label %bb167, label %bb77\r\n\r\nbb77: ; preds = %bb64\r\n br label %bb78\r\n\r\nbb78: ; preds = %bb78, %bb77\r\n %i79 = phi nsz float [ %i66, %bb77 ], [ %i103, %bb78 ]\r\n %i80 = phi nsz float [ %i67, %bb77 ], [ %i104, %bb78 ]\r\n %i81 = phi nsz float [ %i68, %bb77 ], [ %i105, %bb78 ]\r\n %i82 = phi nsz float [ poison, %bb77 ], [ %i106, %bb78 ]\r\n %i83 = phi nsz float [ poison, %bb77 ], [ %i123, %bb78 ]\r\n %i84 = phi nsz float [ %i69, %bb77 ], [ %i124, %bb78 ]\r\n %i85 = phi nsz float [ poison, %bb77 ], [ %i125, %bb78 ]\r\n %i86 = phi nsz float [ %i70, %bb77 ], [ %i126, %bb78 ]\r\n %i87 = fmul fast float %i79, poison\r\n %i88 = fmul fast float %i80, poison\r\n %i89 = fmul fast float %i81, poison\r\n %i90 = fmul fast float %i82, poison\r\n %i91 = fmul fast float %i83, poison\r\n %i92 = fadd fast float %i91, %i87\r\n %i93 = fmul fast float %i84, poison\r\n %i94 = fadd fast float %i93, %i88\r\n %i95 = fmul fast float %i85, poison\r\n %i96 = fadd fast float %i95, %i89\r\n %i97 = fmul fast float %i86, poison\r\n %i98 = fadd fast float %i97, %i90\r\n %i99 = fadd fast float %i92, poison\r\n %i100 = fadd fast float %i94, poison\r\n %i101 = fadd fast float %i96, poison\r\n %i102 = fadd fast float %i98, poison\r\n %i103 = fadd fast float %i99, poison\r\n %i104 = fadd fast float %i100, poison\r\n %i105 = fadd fast float %i101, poison\r\n %i106 = fadd fast float %i102, poison\r\n %i107 = fmul fast float %i79, poison\r\n %i108 = fmul fast float %i80, poison\r\n %i109 = fmul fast float %i81, poison\r\n %i110 = fmul fast float %i82, poison\r\n %i111 = fmul fast float %i83, poison\r\n %i112 = fadd fast float %i111, %i107\r\n %i113 = fmul fast float %i84, poison\r\n %i114 = fadd fast float %i113, %i108\r\n %i115 = fmul fast float %i85, poison\r\n %i116 = fadd fast float %i115, %i109\r\n %i117 = fmul fast float %i86, poison\r\n %i118 = fadd fast float %i117, %i110\r\n %i119 = fadd fast float %i112, poison\r\n %i120 = fadd fast float %i114, poison\r\n %i121 = fadd fast float %i116, poison\r\n %i122 = fadd fast float %i118, poison\r\n %i123 = fadd fast float %i119, poison\r\n %i124 = fadd fast float %i120, poison\r\n %i125 = fadd fast float %i121, poison\r\n %i126 = fadd fast float %i122, poison\r\n %i127 = fmul fast float %i79, %i\r\n %i128 = fmul fast float %i80, %i\r\n %i129 = fmul fast float %i81, %i\r\n %i130 = fmul fast float %i82, %i\r\n %i131 = fmul fast float %i83, %i65\r\n %i132 = fadd fast float %i131, %i127\r\n %i133 = fmul fast float %i84, %i65\r\n %i134 = fadd fast float %i133, %i128\r\n %i135 = fmul fast float %i85, %i65\r\n %i136 = fadd fast float %i135, %i129\r\n %i137 = fmul fast float %i86, %i65\r\n %i138 = fadd fast float %i137, %i130\r\n %i139 = fadd fast float %i132, poison\r\n %i140 = fadd fast float %i134, poison\r\n %i141 = fadd fast float %i136, poison\r\n %i142 = fadd fast float %i138, poison\r\n %i143 = fadd fast float %i139, poison\r\n %i144 = fadd fast float %i140, poison\r\n %i145 = fadd fast float %i141, poison\r\n %i146 = fadd fast float %i142, poison\r\n %i147 = fmul fast float %i79, poison\r\n %i148 = fmul fast float %i80, poison\r\n %i149 = fmul fast float %i81, poison\r\n %i150 = fmul fast float %i82, poison\r\n %i151 = fmul fast float %i83, poison\r\n %i152 = fadd fast float %i151, %i147\r\n %i153 = fmul fast float %i84, poison\r\n %i154 = fadd fast float %i153, %i148\r\n %i155 = fmul fast float %i85, poison\r\n %i156 = fadd fast float %i155, %i149\r\n %i157 = fmul fast float %i86, poison\r\n %i158 = fadd fast float %i157, %i150\r\n %i159 = fadd fast float %i152, poison\r\n %i160 = fadd fast float %i154, poison\r\n %i161 = fadd fast float %i156, poison\r\n %i162 = fadd fast float %i158, poison\r\n %i163 = fadd fast float %i159, poison\r\n %i164 = fadd fast float %i160, poison\r\n %i165 = fadd fast float %i161, poison\r\n %i166 = fadd fast float %i162, poison\r\n br i1 poison, label %bb78, label %bb167\r\n\r\nbb167: ; preds = %bb78, %bb64\r\n %i168 = phi nsz float [ %i76, %bb64 ], [ %i166, %bb78 ]\r\n %i169 = phi nsz float [ poison, %bb64 ], [ %i165, %bb78 ]\r\n %i170 = phi nsz float [ poison, %bb64 ], [ %i164, %bb78 ]\r\n %i171 = phi nsz float [ %i75, %bb64 ], [ %i163, %bb78 ]\r\n %i172 = phi nsz float [ %i74, %bb64 ], [ %i146, %bb78 ]\r\n %i173 = phi nsz float [ %i73, %bb64 ], [ %i145, %bb78 ]\r\n %i174 = phi nsz float [ %i72, %bb64 ], [ %i144, %bb78 ]\r\n %i175 = phi nsz float [ %i71, %bb64 ], [ %i143, %bb78 ]\r\n %i176 = phi nsz float [ %i70, %bb64 ], [ %i126, %bb78 ]\r\n %i177 = phi nsz float [ poison, %bb64 ], [ %i125, %bb78 ]\r\n %i178 = phi nsz float [ %i69, %bb64 ], [ %i124, %bb78 ]\r\n %i179 = phi nsz float [ poison, %bb64 ], [ %i123, %bb78 ]\r\n %i180 = phi nsz float [ poison, %bb64 ], [ %i106, %bb78 ]\r\n %i181 = phi nsz float [ %i68, %bb64 ], [ %i105, %bb78 ]\r\n %i182 = phi nsz float [ %i67, %bb64 ], [ %i104, %bb78 ]\r\n %i183 = phi nsz float [ %i66, %bb64 ], [ %i103, %bb78 ]\r\n store float %i182, ptr poison, align 1\r\n store float %i174, ptr poison, align 1\r\n br i1 poison, label %bb186, label %bb184\r\n\r\nbb184: ; preds = %bb167\r\n br label %bb185\r\n\r\nbb185: ; preds = %bb185, %bb184\r\n br i1 poison, label %bb185, label %bb186\r\n\r\nbb186: ; preds = %bb185, %bb167\r\n %i187 = phi nsz float [ %i178, %bb167 ], [ poison, %bb185 ]\r\n ret void\r\n}\r\n```", "author": "huihzhang", "labels": [ "llvm:SLPVectorizer", "crash" ], "comments": [] }

[ "llvm/test/Transforms/LoopVectorize" ]

{ "fix_commit": "01cbbc52dc95fe5d9e30ecbfb2ec8c7c1e0199c4", "components": [ "LoopVectorize" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": [ [ 645, 652 ] ], "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": [ "VPInstruction::generate" ], "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LoopVectorize/X86/interleave-ptradd-with-replicated-operand.ll", "commands": [ "opt -p loop-vectorize -force-vector-width=4 -S %s" ], "tests": [ { "test_name": "test_interleave_ptradd_with_replicated_op", "test_body": "target datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine ptr @test_interleave_ptradd_with_replicated_op(ptr %m) #0 {\nentry:\n br label %loop\n\nloop: ; preds = %loop, %entry\n %ptr.iv = phi ptr [ %m, %entry ], [ %ptr.iv.next, %loop ]\n %iv = phi i32 [ 1, %entry ], [ %iv.next, %loop ]\n %ptr.iv.next = getelementptr i8, ptr %ptr.iv, i64 8\n %p.4 = getelementptr i8, ptr %ptr.iv, i64 4\n %l.1 = load i32, ptr %p.4, align 4\n %p.0 = getelementptr i8, ptr %ptr.iv, i64 0\n %l.2 = load i32, ptr %p.0, align 4\n %add = add i32 %l.1, %l.2\n store i32 %add, ptr %ptr.iv, align 4\n %iv.next = add i32 %iv, 1\n %tobool.not = icmp eq i32 %iv, 100\n br i1 %tobool.not, label %exit, label %loop\n\nexit: ; preds = %loop\n ret ptr %p.4\n}\n\nattributes #0 = { \"target-cpu\"=\"znver2\" }\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "A/F: \"Trying to access a single scalar per part but has multiple scalars \" \"per part.\"' failed after 7f74651", "body": "Recently one of our internal tests started hitting an assertion failure when compiling which I bisected back to commit 7f74651. \r\n\r\nHere is a reduced repro from the crashing code:\r\n```c\r\ntypedef float a;\r\ntypedef struct {\r\n a b, c;\r\n} d;\r\ntypedef struct {\r\n d e;\r\n a f;\r\n} g;\r\n#define h() \\\r\n i = j->e.b; \\\r\n k = l->e.c; \\\r\n l->f = k;\r\na i, k;\r\nint m;\r\ng *l;\r\nvoid n() {\r\n g *j = l + 1;\r\n for (; m; ++m, ++l, ++j) {\r\n h()\r\n }\r\n}\r\n```\r\n\r\nWhen compiled with `-O2 -g -ffast-math -march=znver2` using a compiler built from 7f74651 you can see the crash:\r\n```\r\n$ ~/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang -c -O2 -g -ffast-math -march=znver2 repro.c\r\nclang: /home/dyung/src/upstream/llvm_clean_git/llvm/lib/Transforms/Vectorize/VPlan.cpp:258: llvm::Value* llvm::VPTransformState::get(llvm::VPValue*, bool): Assertion `(VF.isScalar() || Def->isLiveIn() || hasVectorValue(Def) || !vputils::onlyFirstLaneUsed(Def) || (hasScalarValue(Def, VPLane(0)) && Data.VPV2Scalars[Def].size() == 1)) && \"Trying to access a single scalar per part but has multiple scalars \" \"per part.\"' failed.\r\nPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.\r\nStack dump:\r\n0. Program arguments: /home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang -c -O2 -g -ffast-math -march=znver2 repro2.c\r\n1. <eof> parser at end of file\r\n2. Optimizer\r\n3. Running pass \"function<eager-inv>(float2int,lower-constant-intrinsics,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-verify-fixpoint>,loop-unroll<O2>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)\" on module \"repro2.c\"\r\n4. Running pass \"loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>\" on function \"n\"\r\n #0 0x000055d0e9ad0e1f llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x235be1f)\r\n #1 0x000055d0e9ace96c llvm::sys::CleanupOnSignal(unsigned long) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x235996c)\r\n #2 0x000055d0e9a20cc8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0\r\n #3 0x00007f44c03e9420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)\r\n #4 0x00007f44bfeb600b raise /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1\r\n #5 0x00007f44bfe95859 abort /build/glibc-LcI20x/glibc-2.31/stdlib/abort.c:81:7\r\n #6 0x00007f44bfe95729 get_sysdep_segment_value /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:509:8\r\n #7 0x00007f44bfe95729 _nl_load_domain /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:970:34\r\n #8 0x00007f44bfea6fd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)\r\n #9 0x000055d0eb66055a llvm::VPTransformState::get(llvm::VPValue*, bool) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3eeb55a)\r\n#10 0x000055d0eb6926a9 llvm::VPInstruction::generate(llvm::VPTransformState&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3f1d6a9)\r\n#11 0x000055d0eb695d01 llvm::VPInstruction::execute(llvm::VPTransformState&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3f20d01)\r\n#12 0x000055d0eb65fb77 llvm::VPBasicBlock::executeRecipes(llvm::VPTransformState*, llvm::BasicBlock*) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3eeab77)\r\n#13 0x000055d0eb66283e llvm::VPBasicBlock::execute(llvm::VPTransformState*) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3eed83e)\r\n#14 0x000055d0eb6645c8 llvm::VPRegionBlock::execute(llvm::VPTransformState*) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3eef5c8)\r\n#15 0x000055d0eb660b8e llvm::VPlan::execute(llvm::VPTransformState*) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3eebb8e)\r\n#16 0x000055d0eb5362cb llvm::LoopVectorizationPlanner::executePlan(llvm::ElementCount, unsigned int, llvm::VPlan&, llvm::InnerLoopVectorizer&, llvm::DominatorTree*, bool, llvm::DenseMap<llvm::SCEV const*, llvm::Value*, llvm::DenseMapInfo<llvm::SCEV const*, void>, llvm::detail::DenseMapPair<llvm::SCEV const*, llvm::Value*>> const*) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3dc12cb)\r\n#17 0x000055d0eb54baf4 llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3dd6af4)\r\n#18 0x000055d0eb54dac1 llvm::LoopVectorizePass::runImpl(llvm::Function&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3dd8ac1)\r\n#19 0x000055d0eb54e133 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3dd9133)\r\n#20 0x000055d0eaf6f396 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x37fa396)\r\n#21 0x000055d0e9589031 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x1e14031)\r\n#22 0x000055d0e86a7026 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0xf32026)\r\n#23 0x000055d0e958799d llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x1e1299d)\r\n#24 0x000055d0e86a79e6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0xf329e6)\r\n#25 0x000055d0e95873d1 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x1e123d1)\r\n#26 0x000055d0e9d65d23 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0\r\n#27 0x000055d0e9d692f8 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x25f42f8)\r\n#28 0x000055d0ea4492ac clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x2cd42ac)\r\n#29 0x000055d0ec3dbb9c clang::ParseAST(clang::Sema&, bool, bool) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x4c66b9c)\r\n#30 0x000055d0ea4496c8 clang::CodeGenAction::ExecuteAction() (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x2cd46c8)\r\n#31 0x000055d0ea7119a9 clang::FrontendAction::Execute() (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x2f9c9a9)\r\n#32 0x000055d0ea68d99e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x2f1899e)\r\n#33 0x000055d0ea7fe466 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x3089466)\r\n#34 0x000055d0e862a295 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0xeb5295)\r\n#35 0x000055d0e862201a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0\r\n#36 0x000055d0ea48f17d void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0\r\n#37 0x000055d0e9a211d0 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x22ac1d0)\r\n#38 0x000055d0ea48f79f clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0\r\n#39 0x000055d0ea4538f4 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x2cde8f4)\r\n#40 0x000055d0ea454a0d clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x2cdfa0d)\r\n#41 0x000055d0ea45cb55 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0x2ce7b55)\r\n#42 0x000055d0e862722b clang_main(int, char**, llvm::ToolContext const&) (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0xeb222b)\r\n#43 0x000055d0e855712b main (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0xde212b)\r\n#44 0x00007f44bfe97083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3\r\n#45 0x000055d0e8621aae _start (/home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin/clang+0xeacaae)\r\nclang: error: clang frontend command failed with exit code 134 (use -v to see invocation)\r\nclang version 20.0.0 (https://github.com/llvm/llvm-project.git 7f74651837b8f95996ea4c774b2e604020446951)\r\nTarget: x86_64-unknown-linux-gnu\r\nThread model: posix\r\nInstalledDir: /home/dyung/src/upstream/7f74651837b8f95996ea4c774b2e604020446951-linux/bin\r\nBuild config: +assertions\r\n```\r\n\r\nHere is a link to godbolt also showing the failure: https://godbolt.org/z/bnPM9qqYo", "author": "dyung", "labels": [ "vectorizers", "crash" ], "comments": [] }

[ "llvm/test/Transforms/LICM" ]

{ "fix_commit": "18b02bbf441660683df7f3925946984203d49bab", "components": [ "LICM", "MemorySSAUpdater" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": [ [ 190, 196 ] ], "llvm/lib/Analysis/MemorySSAUpdater.cpp": [ [ 1403, 1411 ] ], "llvm/lib/Transforms/Scalar/LICM.cpp": [ [ 1465, 1472 ] ], "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": [ "MemorySSAUpdater::createMemoryAccessBefore", "MemorySSAUpdater::createMemoryAccessInBB" ], "llvm/lib/Transforms/Scalar/LICM.cpp": [ "cloneInstructionInExitBlock" ], "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/LICM/PR116813-memoryssa-outdated.ll", "commands": [ "opt -passes='loop-mssa(simple-loop-unswitch<nontrivial>,licm)' -verify-memoryssa -S < %s" ], "tests": [ { "test_name": "<module>", "test_body": "\n; Check that running LICM after SimpleLoopUnswitch does not result in a crash.\n\ndefine i32 @foo(i1 %arg, ptr %arg1) {\n;\nstart:\n br label %loop\n\nloop: ; preds = %loop, %bb\n %i = select i1 %arg, ptr %arg1, ptr @bar\n %i3 = call i32 %i()\n br i1 %arg, label %loop, label %ret\n\nret: ; preds = %loop\n ret i32 %i3\n}\n\ndeclare i32 @bar() nounwind willreturn memory(none)", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "[SimpleLoopUnswitch][LICM] Assertion `NewAccess != nullptr && \"Tried to create a memory access for a \" \"non-memory touching instruction\"'", "body": "The following IR triggers the assertion mentioned in the title:\r\n\r\n```llvm\r\n; opt -passes='loop-mssa(simple-loop-unswitch<nontrivial>,licm)'\r\ndefine i32 @foo(i1 %arg, ptr %arg1) {\r\nbb:\r\n br label %bb2\r\n\r\nbb2: ; preds = %bb2, %bb\r\n %i = select i1 %arg, ptr %arg1, ptr @bar\r\n %i3 = call i32 %i()\r\n br i1 %arg, label %bb2, label %bb4\r\n\r\nbb4: ; preds = %bb2\r\n ret i32 %i3\r\n}\r\n\r\ndeclare i32 @bar() nounwind willreturn memory(none)\r\n```\r\n\r\nhttps://llvm.godbolt.org/z/bj79jxo8x", "author": "DianQK", "labels": [ "crash", "llvm:analysis", "llvm:transforms" ], "comments": [] }

[ "llvm/test/Transforms/SLPVectorizer" ]

{ "fix_commit": "376dad72abb4960cd93e37e3e98de3950b5c3dfe", "components": [ "SLPVectorizer" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": [ [ 16215, 16220 ] ], "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, 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"llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/SLPVectorizer/X86/perfect-matched-reused-bv.ll", "commands": [ "opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu -mattr=+avx512f < %s" ], "tests": [ { "test_name": "test", "test_body": "define void @test() {\nbb:\n br label %bb1\n\nbb1: ; preds = %bb4, %bb\n %phi = phi i32 [ 0, %bb ], [ %add6, %bb4 ]\n %phi2 = phi i32 [ 0, %bb ], [ %add, %bb4 ]\n %or = or i32 %phi2, 0\n %or3 = or i32 %phi, 0\n br i1 false, label %bb7, label %bb4\n\nbb4: ; preds = %bb1\n %add = add i32 0, 0\n %add5 = add i32 0, 0\n %add6 = add i32 %phi, 0\n br i1 false, label %bb7, label %bb1\n\nbb7: ; preds = %bb4, %bb1\n %phi8 = phi i32 [ %or, %bb1 ], [ %add5, %bb4 ]\n %phi9 = phi i32 [ %or3, %bb1 ], [ %add6, %bb4 ]\n ret void\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Instruction does not dominate all uses! LLVM ERROR: Broken module found, compilation aborted! (yet another)", "body": "To reproduce run the test below with -passes slp-vectorizer\n```\n; ModuleID = './reduced.ll'\nsource_filename = \"./reduced.ll\"\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2\"\ntarget triple = \"x86_64-unknown-linux-gnu\"\n\ndefine void @wombat() #0 gc \"statepoint-example\" {\nbb:\n br label %bb1\n\nbb1: ; preds = %bb4, %bb\n %phi = phi i32 [ 0, %bb ], [ %add6, %bb4 ]\n %phi2 = phi i32 [ 0, %bb ], [ %add, %bb4 ]\n %or = or i32 %phi2, 0\n %or3 = or i32 %phi, 0\n br i1 false, label %bb7, label %bb4\n\nbb4: ; preds = %bb1\n %add = add i32 0, 0\n %add5 = add i32 0, 0\n %add6 = add i32 %phi, 0\n br i1 false, label %bb7, label %bb1\n\nbb7: ; preds = %bb4, %bb1\n %phi8 = phi i32 [ %or, %bb1 ], [ %add5, %bb4 ]\n %phi9 = phi i32 [ %or3, %bb1 ], [ %add6, %bb4 ]\n ret void\n}\n\nattributes #0 = { \"target-features\"=\"+prfchw,-cldemote,+avx,+aes,+sahf,+pclmul,-xop,+crc32,-amx-fp8,+xsaves,-avx512fp16,-usermsr,-sm4,-egpr,+sse4.1,-avx512ifma,+xsave,+sse4.2,-tsxldtrk,-sm3,-ptwrite,-widekl,-movrs,+invpcid,+64bit,+xsavec,-avx10.1-512,-avx512vpopcntdq,+cmov,-avx512vp2intersect,+avx512cd,+movbe,-avxvnniint8,-ccmp,-amx-int8,-kl,-avx10.1-256,+evex512,-avxvnni,+rtm,+adx,+avx2,-hreset,-movdiri,-serialize,-sha512,-vpclmulqdq,+avx512vl,-uintr,-cf,+clflushopt,-raoint,-cmpccxadd,+bmi,-amx-tile,+sse,-avx10.2-256,-gfni,-avxvnniint16,-amx-fp16,-zu,-ndd,+xsaveopt,+rdrnd,+avx512f,-amx-bf16,-avx512bf16,-avx512vnni,-push2pop2,+cx8,+avx512bw,+sse3,+pku,-nf,-amx-tf32,-amx-avx512,+fsgsbase,-clzero,-mwaitx,-lwp,+lzcnt,-sha,-movdir64b,-ppx,-wbnoinvd,-enqcmd,-amx-transpose,-avx10.2-512,-avxneconvert,-tbm,-pconfig,-amx-complex,+ssse3,+cx16,+bmi2,+fma,+popcnt,-avxifma,+f16c,-avx512bitalg,-rdpru,+clwb,+mmx,+sse2,+rdseed,-avx512vbmi2,-prefetchi,-amx-movrs,-rdpid,-fma4,-avx512vbmi,-shstk,-vaes,-waitpkg,-sgx,+fxsr,+avx512dq,-sse4a,-avx512f\" }\n```\nReproducer: https://godbolt.org/z/Kqddzds1c\n\nStack dump:\n```\n0.\tProgram arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes slp-vectorizer <source>\n1.\tRunning pass \"verify\" on module \"<source>\"\n #0 0x00000000051b4a48 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x51b4a48)\n #1 0x00000000051b243c SignalHandler(int) Signals.cpp:0:0\n #2 0x00007c6fb5442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)\n #3 0x00007c6fb54969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)\n #4 0x00007c6fb5442476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)\n #5 0x00007c6fb54287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)\n #6 0x00000000007e2469 llvm::json::operator==(llvm::json::Value const&, llvm::json::Value const&) (.cold) JSON.cpp:0:0\n #7 0x00000000050f32d8 (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x50f32d8)\n #8 0x0000000004ff2498 (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4ff2498)\n #9 0x00000000009057ae llvm::detail::PassModel<llvm::Module, llvm::VerifierPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x9057ae)\n#10 0x0000000004fb1d10 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4fb1d10)\n#11 0x0000000000910d7a llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x910d7a)\n#12 0x00000000009033f9 optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x9033f9)\n#13 0x00007c6fb5429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)\n#14 0x00007c6fb5429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)\n#15 0x00000000008facde _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8facde)\nProgram terminated with signal: SIGSEGV\nCompiler returned: 139\n```", "author": "TatyanaDoubts", "labels": [ "llvm:SLPVectorizer", "crash" ], "comments": [] }

[ "llvm/test/Transforms/InstCombine" ]

{ "fix_commit": "e96c0c1d5e0a9916098b1a31acb006ea6c1108fb", "components": [ "InstCombine" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": [ [ 2167, 2180 ] ], "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": [ "collectInsertionElements" ], "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": null, "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/InstCombine/bitcast.ll", "commands": [ "opt < %s -passes=instcombine -S" ], "tests": [ { "test_name": "bitcast_from_single_element_pointer_vector_to_pointer", "test_body": "target datalayout = \"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\ntarget triple = \"x86_64-apple-darwin10.0.0\"\n\ndefine ptr @bitcast_from_single_element_pointer_vector_to_pointer(<1 x ptr> %ptrvec) {\n %ptr = bitcast <1 x ptr> %ptrvec to ptr\n ret ptr %ptr\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "bitcast_shl", "test_body": "target datalayout = \"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\ntarget triple = \"x86_64-apple-darwin10.0.0\"\n\ndefine <4 x i32> @bitcast_shl(i32 %arg) {\n %i = zext i32 %arg to i64\n %i1 = shl i64 %i, 32\n %i2 = or i64 %i1, 65\n %i3 = zext i64 %i2 to i128\n %i4 = shl i128 %i3, 64\n %i5 = bitcast i128 %i4 to <4 x i32>\n ret <4 x i32> %i5\n}\n", "additional_args": null, "lli_expected_out": null }, { "test_name": "select_bitcast_unsized_pointer", "test_body": "target datalayout = \"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64\"\ntarget triple = \"x86_64-apple-darwin10.0.0\"\n\ndeclare void @f1()\n\ndeclare void @f2()\n\ndefine ptr @select_bitcast_unsized_pointer(i1 %c) {\n %s = select i1 %c, ptr @f1, ptr @f2\n ret ptr %s\n}\n", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "InstCombine calculated a wrong `insertelement` instruction", "body": "I tried this IR:\r\n\r\n```llvm\r\ndefine <4 x i32> @src(i32 %arg) {\r\n %i = zext i32 %arg to i64\r\n %i1 = shl i64 %i, 32\r\n %i2 = or i64 %i1, 65\r\n %i3 = zext i64 %i2 to i128\r\n %i4 = shl i128 %i3, 64\r\n %i5 = bitcast i128 %i4 to <4 x i32>\r\n ret <4 x i32> %i5\r\n}\r\n\r\ndefine <4 x i32> @tgt(i32 %arg) {\r\n %i5 = insertelement <4 x i32> <i32 0, i32 0, i32 0, i32 poison>, i32 %arg, i64 3\r\n ret <4 x i32> %i5\r\n}\r\n```\r\n\r\nI expect `src` to be:\r\n\r\n```llvm\r\ndefine <4 x i32> @src(i32 %arg) {\r\n %i5 = insertelement <4 x i32> <i32 0, i32 0, i32 65, i32 poison>, i32 %arg, i64 3\r\n ret <4 x i32> %i5\r\n}\r\n```\r\n\r\nBut I'm getting the same instructions as `tgt`.\r\n\r\nGodbolt: https://llvm.godbolt.org/z/KnMEY4rTq\r\nAlive2: https://alive2.llvm.org/ce/z/7FIJNi\r\nFrom: https://github.com/rust-lang/rust/issues/121996", "author": "DianQK", "labels": [ "miscompilation", "llvm:instcombine" ], "comments": [ { "author": "cbeuw", "body": "Looks like this bug is almost 11 years old: https://github.com/llvm/llvm-project/commit/feb34713d531d1f48c37116e8cab84814202d057! Thanks for fixing" }, { "author": "DianQK", "body": "> Looks like this bug is almost 11 years old: [feb3471](https://github.com/llvm/llvm-project/commit/feb34713d531d1f48c37116e8cab84814202d057)! Thanks for fixing\r\n\r\nBased on my experience, we likely have many more latent bugs. :)" } ] }

[ "llvm/test/Transforms/Reg2Mem" ]

{ "fix_commit": "fdaad738753cde2bba6480c2ee5d1e9fb45064b9", "components": [ "DemoteRegToStack" ], "bug_location_lineno": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/include/llvm/Analysis/ScalarEvolution.h": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.h": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineInternal.h": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/include/llvm/Analysis/MemorySSAUpdater.h": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": [ [ 50, 55 ], [ 102, 110 ] ], "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/include/llvm/IR/CmpPredicate.h": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/include/llvm/Analysis/LoopCacheAnalysis.h": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanValue.h": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/include/llvm/Analysis/ValueTracking.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null }, "bug_location_funcname": { "llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp": null, "llvm/lib/Transforms/Vectorize/VectorCombine.cpp": null, "llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp": null, "llvm/lib/IR/Operator.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp": null, "llvm/lib/Analysis/InstructionSimplify.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp": null, "llvm/lib/Analysis/ScalarEvolution.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorize.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp": null, "llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp": null, "llvm/lib/Analysis/InlineCost.cpp": null, "llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp": null, "llvm/lib/Transforms/IPO/AttributorAttributes.cpp": null, "llvm/lib/Transforms/Coroutines/CoroSplit.cpp": null, "llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h": null, "llvm/lib/Transforms/Vectorize/VPlan.h": null, "llvm/lib/Transforms/Utils/LoopPeel.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp": null, "llvm/lib/Analysis/MemorySSAUpdater.cpp": null, "llvm/lib/Transforms/Scalar/LICM.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp": null, "llvm/lib/Transforms/Utils/LowerSwitch.cpp": null, "llvm/lib/Analysis/ValueTracking.cpp": null, "llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp": null, "llvm/lib/IR/Value.cpp": null, "llvm/lib/IR/AsmWriter.cpp": null, "llvm/lib/Transforms/Scalar/GVN.cpp": null, "llvm/lib/Transforms/Scalar/NewGVN.cpp": null, "llvm/lib/Transforms/Utils/Local.cpp": null, "llvm/lib/Transforms/Scalar/Reassociate.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp": null, "llvm/lib/Transforms/Utils/DemoteRegToStack.cpp": [ "llvm::DemoteRegToStack" ], "llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h": null, "llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstructionCombining.cpp": null, "llvm/lib/Transforms/Utils/SimplifyCFG.cpp": null, "llvm/lib/Transforms/Scalar/ConstraintElimination.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp": null, "llvm/include/llvm/Analysis/SimplifyQuery.h": null, "llvm/lib/Transforms/Scalar/IndVarSimplify.cpp": null, "llvm/lib/IR/Instructions.cpp": null, "llvm/lib/Transforms/Scalar/EarlyCSE.cpp": null, "llvm/lib/Analysis/LazyValueInfo.cpp": null, "llvm/lib/Transforms/Vectorize/VPlanUtils.h": null, "llvm/include/llvm/Analysis/AliasAnalysis.h": null, "llvm/include/llvm/Analysis/BasicAliasAnalysis.h": null, "llvm/lib/Analysis/BasicAliasAnalysis.cpp": null, "llvm/lib/Transforms/Scalar/JumpThreading.cpp": null, "llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp": null, "llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp": null, "llvm/lib/Transforms/Scalar/GVNSink.cpp": null, "llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp": null, "llvm/lib/Analysis/ConstantFolding.cpp": null, "llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp": null, "llvm/lib/Analysis/LoopCacheAnalysis.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp": null, "llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp": null, "llvm/lib/Transforms/Scalar/BDCE.cpp": null, "llvm/lib/Transforms/Utils/SimplifyIndVar.cpp": null, "llvm/lib/IR/ConstantFold.cpp": null, "llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp": null, "llvm/lib/Transforms/Vectorize/VPlan.cpp": null, "llvm/lib/Transforms/Utils/SCCPSolver.cpp": null, "llvm/include/llvm/IR/PatternMatch.h": null, "llvm/lib/Transforms/Utils/MoveAutoInit.cpp": null, "llvm/lib/Transforms/Utils/ValueMapper.cpp": null } }

[ { "file": "llvm/test/Transforms/Reg2Mem/callbr-crash.ll", "commands": [ "opt -passes=reg2mem -S < %s" ], "tests": [ { "test_name": "<module>", "test_body": "\ndefine void @crash() {\n;\nentry:\n %a = callbr i64 asm \"\", \"=r,r,!i\"(i64 0)\n to label %then [label %else]\n\nthen:\n %b = inttoptr i64 %a to ptr\n br label %else\n\nelse:\n ret void\n}", "additional_args": null, "lli_expected_out": null } ] } ]

{ "title": "Reg2Mem pass triggered assertion `isa<To>(V al) && \"cast<Ty>() argument of incompatible type!\"", "body": "https://godbolt.org/z/oxW8zbKr6\r\n`opt --passes=reg2mem reduced.ll`\r\n```llvm\r\ntarget datalayout = \"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128\"\r\ntarget triple = \"x86_64-unknown-linux-gnu\"\r\n\r\n%struct.__large_struct = type { [100 x i64] }\r\n\r\ndefine fastcc i64 @__se_sys_pselect6() {\r\n %1 = callbr i64 asm sideeffect \"\\0A1:\\09movq $1,$0\\0A .pushsection \\22__ex_table\\22,\\22a\\22\\0A .balign 4\\0A .long (1b) - .\\0A .long (${2:l}) - .\\0A .long 3 \\0A .popsection\\0A\", \"=r,*m,!i,~{dirflag},~{fpsr},~{flags}\"(ptr elementtype(%struct.__large_struct) null)\r\n to label %2 [label %common.ret]\r\n\r\n2: ; preds = %0\r\n %3 = inttoptr i64 %1 to ptr\r\n %4 = callbr i64 asm sideeffect \"\\0A1:\\09movq $1,$0\\0A .pushsection \\22__ex_table\\22,\\22a\\22\\0A .balign 4\\0A .long (1b) - .\\0A .long (${2:l}) - .\\0A .long 3 \\0A .popsection\\0A\", \"=r,*m,!i,~{dirflag},~{fpsr},~{flags}\"(ptr elementtype(%struct.__large_struct) null)\r\n to label %common.ret [label %common.ret]\r\n\r\ncommon.ret: ; preds = %2, %2, %0\r\n ret i64 0\r\n}\r\n```", "author": "XChy", "labels": [ "crash", "llvm:transforms" ], "comments": [] }