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# Copyright 2025 Yingwei Zheng
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import llvm_helper
import json
import os
import dateparser
import time
import datetime
import re
from typing import Tuple, Sequence, Union
class TimeCompensationGuard:
def __init__(self, environment):
self.environment = environment
def __enter__(self):
self.start_time = time.time()
self.environment.interaction_time_compensation_enter += 1
def __exit__(self, exception_type, exception_value, exception_traceback):
self.environment.interaction_time_compensation_enter -= 1
if self.environment.interaction_time_compensation_enter == 0:
self.environment.interaction_time_compensation += (
time.time() - self.start_time
)
class Environment:
def __init__(
self,
issue_id,
base_model_knowledge_cutoff: str,
*,
max_build_jobs=None,
max_test_jobs=None,
):
with open(os.path.join(llvm_helper.dataset_dir, f"{issue_id}.json")) as f:
self.data = json.load(f)
self.base_commit = self.data["base_commit"]
self.knowledge_cutoff = dateparser.parse(self.data["knowledge_cutoff"])
self.bug_type = self.data["bug_type"]
self.test_commit = self.data.get(
"test_commit", self.data["hints"]["fix_commit"]
)
self.used_knowledge = dict()
self.use_knowledge("base_model", base_model_knowledge_cutoff)
self.interaction_time_compensation = 0.0
self.interaction_time_compensation_enter = 0
self.build_count = 0
self.build_failure_count = 0
self.fast_check_count = 0
self.full_check_count = 0
self.fast_check_pass = False
self.full_check_pass = False
if max_build_jobs is None:
self.max_build_jobs = os.cpu_count()
else:
self.max_build_jobs = max_build_jobs
if max_test_jobs is None:
self.max_test_jobs = max_build_jobs
else:
self.max_test_jobs = max_test_jobs
self.start_time = time.time()
def use_knowledge(self, url: str, date: Union[str, datetime.datetime]):
if isinstance(date, str):
date = dateparser.parse(date)
if date <= self.knowledge_cutoff:
self.used_knowledge[url] = min(self.used_knowledge.get(url, date), date)
else:
raise ValueError("Knowledge is newer than the cutoff date")
def reset(self):
with TimeCompensationGuard(self):
llvm_helper.reset(self.base_commit)
def verify_head(self):
head = llvm_helper.git_execute(["rev-parse", "HEAD"]).strip()
if head != self.base_commit:
raise RuntimeError("invalid HEAD")
def build(self):
with TimeCompensationGuard(self):
self.build_count += 1
self.verify_head()
res, log = llvm_helper.build(self.max_build_jobs)
if not res:
self.build_failure_count += 1
return res, log
def dump(self, log=None):
wall_time = time.time() - self.start_time - self.interaction_time_compensation
self.verify_head()
patch = llvm_helper.git_execute(["diff", "--", "llvm/lib/*", "llvm/include/*"])
used_knowledge = []
for url, t in self.used_knowledge.items():
used_knowledge.append((url, t.strftime("%Y-%m-%d%z")))
return {
"wall_time": wall_time,
"knowledge": used_knowledge,
"build_count": self.build_count,
"build_failure_count": self.build_failure_count,
"fast_check_count": self.fast_check_count,
"full_check_count": self.full_check_count,
"fast_check_pass": self.fast_check_pass,
"full_check_pass": self.full_check_pass,
"patch": patch,
"log": log,
}
def check_fast(self):
with TimeCompensationGuard(self):
self.fast_check_count += 1
res, reason = self.build()
if not res:
return (False, reason)
res, log = llvm_helper.verify_test_group(
repro=False, input=self.data["tests"], type=self.bug_type
)
if not res:
return (False, log)
self.fast_check_pass = True
return (True, log)
def check_full(self):
with TimeCompensationGuard(self):
self.full_check_count += 1
res, reason = self.build()
if not res:
return (False, reason)
res, log = llvm_helper.verify_test_group(
repro=False, input=self.data["tests"], type=self.bug_type
)
if not res:
return (False, log)
self.fast_check_pass = True
res, log = llvm_helper.verify_lit(
test_commit=self.test_commit,
dirs=self.data["lit_test_dir"],
max_test_jobs=self.max_build_jobs,
)
if not res:
return (False, log)
self.full_check_pass = True
return (True, log)
def get_bug_type(self):
return self.bug_type
def get_base_commit(self):
return self.base_commit
def get_tests(self):
return self.data["tests"]
def get_hint_fix_commit(self):
self.use_knowledge("hint:fix_commit", self.knowledge_cutoff)
return self.data["hints"].get("fix_commit")
def get_hint_components(self):
self.use_knowledge("hint:components", self.knowledge_cutoff)
return self.data["hints"].get("components")
def get_hint_files(self):
self.use_knowledge("hint:files", self.knowledge_cutoff)
lineno = self.data["hints"].get("bug_location_lineno")
if lineno is None:
return None
return sorted(lineno.keys())
def get_hint_bug_functions(self):
self.use_knowledge("hint:bug_functions", self.knowledge_cutoff)
return self.data["hints"].get("bug_location_funcname")
def get_hint_line_level_bug_locations(self):
self.use_knowledge("hint:line_level_bug_locations", self.knowledge_cutoff)
return self.data["hints"].get("bug_location_lineno")
def get_hint_issue(self):
self.use_knowledge("hint:issue", self.knowledge_cutoff)
return self.data.get("issue")
def get_ir_keywords(self, ir: str):
keywords = set()
# instructions
instruction_pattern = re.compile(r"%.+ = (\w+) ")
for match in re.findall(instruction_pattern, ir):
keywords.add(match)
# intrinsics
intrinsic_pattern = re.compile(r"@(llvm.\w+)\(")
for match in re.findall(intrinsic_pattern, ir):
keywords.add(match)
keywords.discard("call")
return keywords
def get_langref_desc(self, keywords):
self.use_knowledge("llvm/docs/LangRef.rst", self.knowledge_cutoff)
return llvm_helper.get_langref_desc(keywords, self.base_commit)
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