File size: 25,889 Bytes
3dcad1f |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 |
;;; Continuation-passing style (CPS) intermediate language (IL)
;; Copyright (C) 2023 Free Software Foundation, Inc.
;;; This library is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU Lesser General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; This library is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU Lesser General Public License
;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;;
;;; When targetting Guile's virtual machine, we can get maximum
;;; performance by expanding out some compound primcalls, both so that
;;; they are available to common subexpression elimination and so that
;;; their lowered forms can be implemented using Guile's low-level VM
;;; capabilities instead of by call-outs to library routines.
;;;
;;; Code:
(define-module (language cps guile-vm lower-primcalls)
#:use-module (ice-9 match)
#:use-module (language cps)
#:use-module (language cps intmap)
#:use-module (language cps utils)
#:use-module (language cps with-cps)
#:use-module (system base target)
#:use-module (system base types internal)
#:export (lower-primcalls))
(define *primcall-lowerers* (make-hash-table))
(define-syntax-rule (define-primcall-lowerer* name proc)
(hashq-set! *primcall-lowerers* 'name proc))
(define-syntax-rule (define-primcall-lowerer (name cps k src param-pat args-pat)
body ...)
(define-primcall-lowerer* name
(lambda (cps k src param args)
(match (cons param args)
((param-pat . args-pat)
body ...)))))
(define *branching-primcall-lowerers* (make-hash-table))
(define-syntax-rule (define-branching-primcall-lowerer* name proc)
(hashq-set! *branching-primcall-lowerers* 'name proc))
(define-syntax-rule (define-branching-primcall-lowerer
(name cps kf kt src param-pat args-pat)
body ...)
(define-branching-primcall-lowerer* name
(lambda (cps kf kt src param args)
(match (cons param args)
((param-pat . args-pat)
body ...)))))
(define-syntax-rule (define-branching-primcall-alias def use ...)
(let ((proc (or (hashq-ref *branching-primcall-lowerers* 'def)
(error "def not found" 'def))))
(hashq-set! *branching-primcall-lowerers* 'use proc)
...))
;; precondition: v is vector. result is u64
(define-primcall-lowerer (vector-length cps k src #f (v))
(with-cps cps
(letv w0 ulen)
(letk kassume
($kargs ('ulen) (ulen)
($continue k src
($primcall 'assume-u64 `(0 . ,(target-max-vector-length)) (ulen)))))
(letk krsh
($kargs ('w0) (w0)
($continue kassume src ($primcall 'ursh/immediate 8 (w0)))))
(build-term
($continue krsh src
($primcall 'word-ref/immediate '(vector . 0) (v))))))
;; precondition: v is vector, uidx is u64 in range
(define-primcall-lowerer (vector-ref cps k src #f (v uidx))
(with-cps cps
(letv upos)
(letk kref ($kargs ('pos) (upos)
($continue k src
($primcall 'scm-ref 'vector (v upos)))))
(build-term
($continue kref src
($primcall 'uadd/immediate 1 (uidx))))))
;; precondition: v is vector, idx is in range
(define-primcall-lowerer (vector-ref/immediate cps k src idx (v))
(let ((pos (1+ idx)))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-ref/immediate `(vector . ,pos) (v)))))))
;; precondition: v is vector, uidx is u64 and is in range
(define-primcall-lowerer (vector-set! cps k src #f (v uidx val))
(with-cps cps
(letv upos)
(letk kset ($kargs ('pos) (upos)
($continue k src
($primcall 'scm-set! 'vector (v upos val)))))
(build-term
($continue kset src
($primcall 'uadd/immediate 1 (uidx))))))
;; precondition: v is vector, idx is in range
(define-primcall-lowerer (vector-set!/immediate cps k src idx (v val))
(let ((pos (1+ idx)))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-set!/immediate `(vector . ,pos) (v val)))))))
(define-primcall-lowerer (allocate-vector/immediate cps k src size ())
(define nwords (1+ size))
(unless (and (exact-integer? size) (<= 0 size (target-max-vector-length)))
(error "precondition failed" size))
(with-cps cps
(letv v w0)
(letk kdone
($kargs () ()
($continue k src ($values (v)))))
(letk ktag1
($kargs ('w0) (w0)
($continue kdone src
($primcall 'word-set!/immediate '(vector . 0) (v w0)))))
(letk ktag0
($kargs ('v) (v)
($continue ktag1 src
($primcall 'load-u64 (+ %tc7-vector (ash size 8)) ()))))
(build-term
($continue ktag0 src
($primcall 'allocate-words/immediate `(vector . ,nwords) ())))))
;; precondition: usize is u64 within range
(define-primcall-lowerer (allocate-vector cps k src #f (usize))
(with-cps cps
(letv nwords v w0-high w0)
(letk kdone
($kargs () ()
($continue k src ($values (v)))))
(letk ktag2
($kargs ('w0) (w0)
($continue kdone src
($primcall 'word-set!/immediate '(vector . 0) (v w0)))))
(letk ktag1
($kargs ('w0-high) (w0-high)
($continue ktag2 src
($primcall 'uadd/immediate %tc7-vector (w0-high)))))
(letk ktag0
($kargs ('v) (v)
($continue ktag1 src
($primcall 'ulsh/immediate 8 (usize)))))
(letk kalloc
($kargs ('nwords) (nwords)
($continue ktag0 src
($primcall 'allocate-words 'vector (nwords)))))
(build-term
($continue kalloc src
;; Header word.
($primcall 'uadd/immediate 1 (usize))))))
;; precondition: none
(define-primcall-lowerer (cons cps k src #f (head tail))
(with-cps cps
(letv pair)
(letk kdone
($kargs () ()
($continue k src ($values (pair)))))
(letk ktail
($kargs () ()
($continue kdone src
($primcall 'scm-set!/immediate '(pair . 1) (pair tail)))))
(letk khead
($kargs ('pair) (pair)
($continue ktail src
($primcall 'scm-set!/immediate '(pair . 0) (pair head)))))
(build-term
($continue khead src
($primcall 'allocate-words/immediate '(pair . 2) ())))))
;; precondition: pair is pair
(define-primcall-lowerer (car cps k src #f (pair))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-ref/immediate '(pair . 0) (pair))))))
;; precondition: pair is pair
(define-primcall-lowerer (cdr cps k src #f (pair))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-ref/immediate '(pair . 1) (pair))))))
;; precondition: pair is mutable pair
(define-primcall-lowerer (set-car! cps k src #f (pair val))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-set!/immediate '(pair . 0) (pair val))))))
;; precondition: pair is mutable pair
(define-primcall-lowerer (set-cdr! cps k src #f (pair val))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-set!/immediate '(pair . 1) (pair val))))))
;; precondition: none
(define-primcall-lowerer (box cps k src #f (val))
(with-cps cps
(letv obj tag)
(letk kdone
($kargs () ()
($continue k src ($values (obj)))))
(letk kval
($kargs () ()
($continue kdone src
($primcall 'scm-set!/immediate '(box . 1) (obj val)))))
(letk ktag1
($kargs ('tag) (tag)
($continue kval src
($primcall 'word-set!/immediate '(box . 0) (obj tag)))))
(letk ktag0
($kargs ('obj) (obj)
($continue ktag1 src
($primcall 'load-u64 %tc7-variable ()))))
(build-term
($continue ktag0 src
($primcall 'allocate-words/immediate '(box . 2) ())))))
;; precondition: box is box. note: no checking for unbound!
(define-primcall-lowerer (box-ref cps k src #f (box))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-ref/immediate '(box . 1) (box))))))
;; precondition: box is box
(define-primcall-lowerer (box-set! cps k src #f (box val))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-set!/immediate '(box . 1) (box val))))))
;; precondition: struct is a struct.
(define-primcall-lowerer (struct-vtable cps k src #f (struct))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-ref/tag 'struct (struct))))))
;; precondition: vtable is a vtable. result is u64
(define-primcall-lowerer (vtable-size cps k src #f (vtable))
(define vtable-index-size 5) ; FIXME: pull from struct.h
(define vtable-offset-size (1+ vtable-index-size))
(with-cps cps
(letv rfields)
(letk kassume
($kargs ('rfields) (rfields)
($continue k src
($primcall 'assume-u64 `(0 . ,(target-max-size-t/scm))
(rfields)))))
(build-term
($continue kassume src
($primcall 'word-ref/immediate
`(struct . ,vtable-offset-size) (vtable))))))
;; precondition: vtable is a vtable.
(define-branching-primcall-lowerer (vtable-vtable? cps kf kt src #f (vtable))
(define vtable-index-flags 1) ; FIXME: pull from struct.h
(define vtable-offset-flags (1+ vtable-index-flags))
(define vtable-validated-mask #b11)
(define vtable-validated-value #b11)
(with-cps cps
(letv flags res)
(letk ktest
($kargs ('res) (res)
($branch kf kt src
'u64-imm-= vtable-validated-value (res))))
(letk kflags
($kargs ('flags) (flags)
($continue ktest src
($primcall 'ulogand/immediate vtable-validated-mask (flags)))))
(build-term
($continue kflags src
($primcall 'word-ref/immediate
`(struct . ,vtable-offset-flags) (vtable))))))
;; precondition: vtable is a vtable.
(define-branching-primcall-lowerer (vtable-has-unboxed-fields? cps kf kt src
nfields (vtable))
(define vtable-index-unboxed-fields 6) ; FIXME: pull from struct.h
(define vtable-offset-unboxed-fields (1+ vtable-index-unboxed-fields))
(define (check-any-unboxed cps ptr word)
(if (< (* word 32) nfields)
(with-cps cps
(letv idx bits)
(let$ checkboxed (check-any-unboxed ptr (1+ word)))
(letk kcheckboxed ($kargs () () ,checkboxed))
(letk kcheck
($kargs ('bits) (bits)
($branch kt kcheckboxed src 'u64-imm-= 0 (bits))))
(letk kword
($kargs ('idx) (idx)
($continue kcheck src
($primcall 'u32-ref 'bitmask (vtable ptr idx)))))
(build-term
($continue kword src
($primcall 'load-u64 word ()))))
(with-cps cps
(build-term ($continue kf src ($values ()))))))
(with-cps cps
(letv ptr)
(let$ checkboxed (check-any-unboxed ptr 0))
(letk kcheckboxed ($kargs ('ptr) (ptr) ,checkboxed))
(build-term
($continue kcheckboxed src
($primcall 'pointer-ref/immediate
`(struct . ,vtable-offset-unboxed-fields)
(vtable))))))
;; precondition: vtable is a vtable, no unboxed fields, nfields matches
;; vtable size.
(define-primcall-lowerer (allocate-struct cps k src nfields (vtable))
(define nwords (1+ nfields))
(with-cps cps
(letv s)
(letk kdone
($kargs () () ($continue k src ($values (s)))))
(letk ktag
($kargs ('s) (s)
($continue kdone src
($primcall 'scm-set!/tag 'struct (s vtable)))))
(build-term
($continue ktag src
($primcall 'allocate-words/immediate `(struct . ,nwords) ())))))
;; precondition: vtable is vtable, idx less than vtable size
(define-branching-primcall-lowerer (vtable-field-boxed? cps kf kt src idx (vtable))
(define vtable-index-unboxed-fields 6) ; FIXME: pull from struct.h
(define vtable-offset-unboxed-fields (1+ vtable-index-unboxed-fields))
(with-cps cps
(letv ptr word bits res)
(letk ktest
($kargs ('res) (res)
($branch kf kt src 'u64-imm-= 0 (res))))
(letk kbits
($kargs ('bits) (bits)
($continue ktest src
($primcall 'ulogand/immediate (ash 1 (logand idx 31)) (bits)))))
(letk kword
($kargs ('word) (word)
($continue kbits src
($primcall 'u32-ref 'bitmask (vtable ptr word)))))
(letk kptr
($kargs ('ptr) (ptr)
($continue kword src
($primcall 'load-u64 (ash idx -5) ()))))
(build-term
($continue kptr src
($primcall 'pointer-ref/immediate
`(struct . ,vtable-offset-unboxed-fields)
(vtable))))))
;; precondition: struct a struct, idx in range, field unboxed.
(define-primcall-lowerer (struct-ref cps k src idx (struct))
(define pos (1+ idx)) ; get past vtable
(with-cps cps
(build-term
($continue k src
($primcall 'scm-ref/immediate `(struct . ,pos) (struct))))))
;; precondition: struct a struct, idx in range, field unboxed.
(define-primcall-lowerer (struct-set! cps k src idx (struct val))
(define pos (1+ idx)) ; get past vtable
(with-cps cps
(build-term
($continue k src
($primcall 'scm-set!/immediate `(struct . ,pos) (struct val))))))
;; precondition: bv is bytevector. result is ptr
(define-primcall-lowerer (bv-contents cps k src #f (bv))
(with-cps cps
(build-term
($continue k src
($primcall 'pointer-ref/immediate '(bytevector . 2) (bv))))))
;; precondition: bv is bytevector. result u64
(define-primcall-lowerer (bv-length cps k src #f (bv))
(with-cps cps
(letv ulen)
(letk kassume
($kargs ('ulen) (ulen)
($continue k src
($primcall 'assume-u64 `(0 . ,(target-max-size-t)) (ulen)))))
(build-term
($continue kassume src
($primcall 'word-ref/immediate '(bytevector . 1) (bv))))))
;; precondition: str is a string. result u64
(define-primcall-lowerer (string-length cps k src #f (str))
(with-cps cps
(letv ulen)
(letk kassume
($kargs ('ulen) (ulen)
($continue k src
($primcall 'assume-u64 `(0 . ,(target-max-size-t)) (ulen)))))
(build-term
($continue kassume src
($primcall 'word-ref/immediate '(string . 3) (str))))))
;; precondition: s a string, uidx in range. result unboxed.
(define-primcall-lowerer (string-ref cps k src #f (s uidx))
(define stringbuf-f-wide #x400)
(with-cps cps
(letv start upos buf ptr tag bits uwpos u32)
(letk kassume
($kargs ('u32) (u32)
($continue k src
($primcall 'assume-u64 '(0 . #xffffff) (u32)))))
(letk kwideref
($kargs ('uwpos) (uwpos)
($continue kassume src
($primcall 'u32-ref 'stringbuf (buf ptr uwpos)))))
(letk kwide
($kargs () ()
($continue kwideref src
($primcall 'ulsh/immediate 2 (upos)))))
(letk knarrow
($kargs () ()
($continue k src
($primcall 'u8-ref 'stringbuf (buf ptr upos)))))
(letk kcmp
($kargs ('bits) (bits)
($branch kwide knarrow src 'u64-imm-= 0 (bits))))
(letk ktag
($kargs ('tag) (tag)
($continue kcmp src
($primcall 'ulogand/immediate stringbuf-f-wide (tag)))))
(letk kptr
($kargs ('ptr) (ptr)
($continue ktag src
($primcall 'word-ref/immediate '(stringbuf . 0) (buf)))))
(letk kwidth
($kargs ('buf) (buf)
($continue kptr src
($primcall 'tail-pointer-ref/immediate '(stringbuf . 2) (buf)))))
(letk kbuf
($kargs ('upos) (upos)
($continue kwidth src
($primcall 'scm-ref/immediate '(string . 1) (s)))))
(letk kadd
($kargs ('start) (start)
($continue kbuf src
($primcall 'uadd #f (start uidx)))))
(build-term
($continue kadd src
($primcall 'word-ref/immediate '(string . 2) (s))))))
;; precondition: sym is a symbol.
(define-primcall-lowerer (symbol-hash cps k src #f (sym))
(with-cps cps
(build-term
($continue k src
($primcall 'word-ref/immediate '(symbol . 2) (sym))))))
;; precondition: none.
(define-primcall-lowerer (make-atomic-box cps k src #f (val))
(with-cps cps
(letv obj tag)
(letk kdone
($kargs () ()
($continue k src ($values (obj)))))
(letk kval
($kargs () ()
($continue kdone src
($primcall 'atomic-scm-set!/immediate '(atomic-box . 1) (obj val)))))
(letk ktag1
($kargs ('tag) (tag)
($continue kval src
($primcall 'word-set!/immediate '(atomic-box . 0) (obj tag)))))
(letk ktag0
($kargs ('obj) (obj)
($continue ktag1 src
($primcall 'load-u64 %tc7-atomic-box ()))))
(build-term
($continue ktag0 src
($primcall 'allocate-words/immediate '(atomic-box . 2) ())))))
;; precondition: x is atomic box
(define-primcall-lowerer (atomic-box-ref cps k src #f (x))
(with-cps cps
(build-term
($continue k src
($primcall 'atomic-scm-ref/immediate '(atomic-box . 1) (x))))))
;; precondition: x is atomic box
(define-primcall-lowerer (atomic-box-set! cps k src #f (x val))
(with-cps cps
(build-term
($continue k src
($primcall 'atomic-scm-set!/immediate '(atomic-box . 1)
(x val))))))
;; precondition: x is atomic box
(define-primcall-lowerer (atomic-box-swap! cps k src param (x val))
(with-cps cps
(build-term
($continue k src
($primcall 'atomic-scm-swap!/immediate '(atomic-box . 1)
(x val))))))
;; precondition: x is atomic box
(define-primcall-lowerer (atomic-box-compare-and-swap! cps k src param (x expected desired))
(with-cps cps
(build-term
($continue k src
($primcall 'atomic-scm-compare-and-swap!/immediate '(atomic-box . 1)
(x expected desired))))))
;; precondition: code is result of $code
(define-primcall-lowerer (make-closure cps k src nfree (code))
(define nwords (+ nfree 2))
(with-cps cps
(letv closure tag)
(letk kdone
($kargs () ()
($continue k src ($values (closure)))))
(letk kinit
($kargs () ()
($continue kdone src
($primcall 'word-set!/immediate '(closure . 1) (closure code)))))
(letk ktag1
($kargs ('tag) (tag)
($continue kinit src
($primcall 'word-set!/immediate '(closure . 0) (closure tag)))))
(letk ktag0
($kargs ('closure) (closure)
($continue ktag1 src
($primcall 'load-u64 (+ %tc7-program (ash nfree 16)) ()))))
(build-term
($continue ktag0 src
($primcall 'allocate-words/immediate `(closure . ,nwords) ())))))
;; precondition: closure is closure, idx is in range
(define-primcall-lowerer (closure-ref cps k src (idx . nfree) (closure))
(let ((pos (+ idx 2)))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-ref/immediate `(closure . ,pos) (closure)))))))
;; precondition: closure is clodure, idx is in range
(define-primcall-lowerer (closure-set! cps k src (idx . nfree) (closure val))
(let ((pos (+ idx 2)))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-set!/immediate `(closure . ,pos) (closure val)))))))
(define-primcall-lowerer (f64->scm cps k src #f (f64))
(with-cps cps
(letv scm tag ptr uidx)
(letk kdone ($kargs () ()
($continue k src ($values (scm)))))
(letk kinit ($kargs ('uidx) (uidx)
($continue kdone src
($primcall 'f64-set! 'flonum (scm ptr uidx f64)))))
(letk kidx ($kargs ('ptr) (ptr)
($continue kinit src ($primcall 'load-u64 0 ()))))
(letk kptr ($kargs () ()
($continue kidx src
($primcall 'tail-pointer-ref/immediate
`(flonum . ,(match (target-word-size)
(4 2)
(8 1)))
(scm)))))
(letk ktag1 ($kargs ('tag) (tag)
($continue kptr src
($primcall 'word-set!/immediate '(flonum . 0) (scm tag)))))
(letk ktag0 ($kargs ('scm) (scm)
($continue ktag1 src
($primcall 'load-u64 %tc16-flonum ()))))
(build-term
($continue ktag0 src
($primcall 'allocate-pointerless-words/immediate
`(flonum . ,(match (target-word-size)
(4 4)
(8 2)))
())))))
(define-primcall-lowerer (keyword->symbol cps k src #f (kw))
(with-cps cps
(build-term
($continue k src
($primcall 'scm-ref/immediate '(keyword . 1) (kw))))))
(define-branching-primcall-lowerer (procedure? cps kf kt src #f (x))
(with-cps cps
(letv procedure? result)
(letk kresult
($kargs ('result) (result)
($branch kt kf src 'eq-constant? #f (result))))
(letk krecv
($kreceive '(result) '() kresult))
(letk kcall
($kargs ('procedure?) (procedure?)
($continue krecv src
($call procedure? (x)))))
(build-term
($continue kcall src ($prim 'procedure?)))))
(define-branching-primcall-lowerer (number? cps kf kt src #f (x))
(with-cps cps
(letk kheap-num
($kargs () ()
($branch kf kt src 'heap-number? #f (x))))
(letk kheap
($kargs () ()
($branch kf kheap-num src 'heap-object? #f (x))))
(build-term
($branch kheap kt src 'fixnum? #f (x)))))
(define-branching-primcall-alias number? complex?)
(define-branching-primcall-lowerer (real? cps kf kt src #f (x))
(with-cps cps
(letk kcomp
($kargs () ()
($branch kt kf src 'compnum? #f (x))))
(letk kheap-num
($kargs () ()
($branch kf kcomp src 'heap-number? #f (x))))
(letk kheap
($kargs () ()
($branch kf kheap-num src 'heap-object? #f (x))))
(build-term
($branch kheap kt src 'fixnum? #f (x)))))
(define-branching-primcall-lowerer (rational? cps kf kt src #f (x))
(with-cps cps
(letv res prim)
(letk ktest
($kargs ('res) (res)
($branch kt kf src 'false? #f (res))))
(letk krecv
($kreceive '(val) #f ktest))
(letk kcall
($kargs ('prim) (prim)
($continue krecv src ($call prim (x)))))
(build-term
($continue kcall src ($prim 'rational?)))))
(define-branching-primcall-lowerer (integer? cps kf kt src #f (x))
(with-cps cps
(letv res prim)
(letk ktest
($kargs ('res) (res)
($branch kt kf src 'false? #f (res))))
(letk krecv
($kreceive '(val) #f ktest))
(letk kcall
($kargs ('prim) (prim)
($continue krecv src ($call prim (x)))))
(build-term
($continue kcall src ($prim 'integer?)))))
(define-branching-primcall-lowerer (exact-integer? cps kf kt src #f (x))
(with-cps cps
(letk kbig
($kargs () ()
($branch kf kt src 'bignum? #f (x))))
(letk kheap
($kargs () ()
($branch kf kbig src 'heap-object? #f (x))))
(build-term
($branch kheap kt src 'fixnum? #f (x)))))
(define-branching-primcall-lowerer (exact? cps kf kt src #f (x))
(with-cps cps
(letk kfrac
($kargs () ()
($branch kf kt src 'fracnum? #f (x))))
(letk kbig
($kargs () ()
($branch kfrac kt src 'bignum? #f (x))))
(build-term
($branch kbig kt src 'fixnum? #f (x)))))
(define-branching-primcall-lowerer (inexact? cps kf kt src #f (x))
(with-cps cps
(letk kcomp
($kargs () ()
($branch kf kt src 'compnum? #f (x))))
(letk kflo
($kargs () ()
($branch kcomp kt src 'flonum? #f (x))))
(build-term
($branch kflo kf src 'fixnum? #f (x)))))
(define (lower-primcalls cps)
(with-fresh-name-state cps
(persistent-intmap
(intmap-fold
(lambda (label cont cps)
(match cont
(($ $kargs names vars
($ $continue k src ($ $calli)))
(error "$calli unsupported by guile-vm backend"))
(($ $kargs names vars
($ $continue k src ($ $primcall op param args)))
(match (hashq-ref *primcall-lowerers* op)
(#f cps)
(lower
(with-cps cps
(let$ term (lower k src param args))
(setk label ($kargs names vars ,term))))))
(($ $kargs names vars
($ $branch kf kt src op param args))
(match (hashq-ref *branching-primcall-lowerers* op)
(#f cps)
(lower
(with-cps cps
(let$ term (lower kf kt src param args))
(setk label ($kargs names vars ,term))))))
(_ cps)))
cps cps))))
|