forked from swiftlang/swift
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathSILInstructions.cpp
1315 lines (1121 loc) · 51.8 KB
/
SILInstructions.cpp
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
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
//===--- SILInstructions.cpp - Instructions for SIL code ------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// This file defines the high-level SILInstruction classes used for SIL code.
//
//===----------------------------------------------------------------------===//
#include "swift/SIL/SILInstruction.h"
#include "swift/AST/AST.h"
#include "swift/Basic/type_traits.h"
#include "swift/Basic/Unicode.h"
#include "swift/Basic/AssertImplements.h"
#include "swift/SIL/FormalLinkage.h"
#include "swift/SIL/SILBuilder.h"
#include "swift/SIL/SILCloner.h"
#include "swift/SIL/SILModule.h"
#include "swift/SIL/SILVisitor.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/ErrorHandling.h"
using namespace swift;
using namespace Lowering;
//===----------------------------------------------------------------------===//
// SILInstruction Subclasses
//===----------------------------------------------------------------------===//
template <typename INST>
static void *allocateDebugVarCarryingInst(SILModule &M, SILDebugVariable Var) {
return M.allocateInst(sizeof(INST) + Var.Name.size(), alignof(INST));
}
TailAllocatedDebugVariable::TailAllocatedDebugVariable(SILDebugVariable Var,
char *buf)
: ArgNo(Var.ArgNo), NameLength(Var.Name.size()), Constant(Var.Constant) {
assert((Var.ArgNo < (2<<16)) && "too many arguments");
assert((NameLength < (2<<15)) && "variable name too long");
memcpy(buf, Var.Name.data(), NameLength);
}
StringRef TailAllocatedDebugVariable::getName(const char *buf) const {
return NameLength ? StringRef(buf, NameLength) : StringRef();
}
AllocStackInst::AllocStackInst(SILDebugLocation Loc, SILType elementType,
SILFunction &F, SILDebugVariable Var)
: AllocationInst(ValueKind::AllocStackInst, Loc,
elementType.getAddressType()),
VarInfo(Var, getTrailingObjects<char>()) {}
AllocStackInst *AllocStackInst::create(SILDebugLocation Loc,
SILType elementType, SILFunction &F,
SILDebugVariable Var) {
void *buf = allocateDebugVarCarryingInst<AllocStackInst>(F.getModule(), Var);
return ::new (buf)
AllocStackInst(Loc, elementType, F, Var);
}
/// getDecl - Return the underlying variable declaration associated with this
/// allocation, or null if this is a temporary allocation.
VarDecl *AllocStackInst::getDecl() const {
return getLoc().getAsASTNode<VarDecl>();
}
AllocRefInst::AllocRefInst(SILDebugLocation Loc, SILType elementType,
SILFunction &F, bool objc, bool canBeOnStack)
: AllocationInst(ValueKind::AllocRefInst, Loc, elementType),
StackPromotable(canBeOnStack), ObjC(objc) {}
AllocBoxInst::AllocBoxInst(SILDebugLocation Loc, SILType ElementType,
SILFunction &F, SILDebugVariable Var)
: AllocationInst(ValueKind::AllocBoxInst, Loc,
SILType::getPrimitiveObjectType(
SILBoxType::get(ElementType.getSwiftRValueType()))),
VarInfo(Var, getTrailingObjects<char>()) {}
AllocBoxInst *AllocBoxInst::create(SILDebugLocation Loc, SILType ElementType,
SILFunction &F, SILDebugVariable Var) {
void *buf = allocateDebugVarCarryingInst<AllocStackInst>(F.getModule(), Var);
return ::new (buf) AllocBoxInst(Loc, ElementType, F, Var);
}
/// getDecl - Return the underlying variable declaration associated with this
/// allocation, or null if this is a temporary allocation.
VarDecl *AllocBoxInst::getDecl() const {
return getLoc().getAsASTNode<VarDecl>();
}
DebugValueInst::DebugValueInst(SILDebugLocation DebugLoc, SILValue Operand,
SILDebugVariable Var)
: UnaryInstructionBase(DebugLoc, Operand),
VarInfo(Var, getTrailingObjects<char>()) {}
DebugValueInst *DebugValueInst::create(SILDebugLocation DebugLoc,
SILValue Operand, SILModule &M,
SILDebugVariable Var) {
void *buf = allocateDebugVarCarryingInst<DebugValueInst>(M, Var);
return ::new (buf) DebugValueInst(DebugLoc, Operand, Var);
}
DebugValueAddrInst::DebugValueAddrInst(SILDebugLocation DebugLoc,
SILValue Operand, SILDebugVariable Var)
: UnaryInstructionBase(DebugLoc, Operand),
VarInfo(Var, getTrailingObjects<char>()) {}
DebugValueAddrInst *DebugValueAddrInst::create(SILDebugLocation DebugLoc,
SILValue Operand, SILModule &M,
SILDebugVariable Var) {
void *buf = allocateDebugVarCarryingInst<DebugValueAddrInst>(M, Var);
return ::new (buf) DebugValueAddrInst(DebugLoc, Operand, Var);
}
VarDecl *DebugValueInst::getDecl() const {
return getLoc().getAsASTNode<VarDecl>();
}
VarDecl *DebugValueAddrInst::getDecl() const {
return getLoc().getAsASTNode<VarDecl>();
}
AllocExistentialBoxInst::AllocExistentialBoxInst(
SILDebugLocation Loc, SILType ExistentialType, CanType ConcreteType,
ArrayRef<ProtocolConformanceRef> Conformances, SILFunction *Parent)
: AllocationInst(ValueKind::AllocExistentialBoxInst, Loc,
ExistentialType.getObjectType()),
ConcreteType(ConcreteType), Conformances(Conformances) {}
static void declareWitnessTable(SILModule &Mod,
ProtocolConformanceRef conformanceRef) {
if (conformanceRef.isAbstract()) return;
auto C = conformanceRef.getConcrete();
if (!Mod.lookUpWitnessTable(C, false))
Mod.createWitnessTableDeclaration(C,
getLinkageForProtocolConformance(C->getRootNormalConformance(),
NotForDefinition));
}
AllocExistentialBoxInst *AllocExistentialBoxInst::create(
SILDebugLocation Loc, SILType ExistentialType, CanType ConcreteType,
ArrayRef<ProtocolConformanceRef> Conformances,
SILFunction *F) {
SILModule &Mod = F->getModule();
void *Buffer = Mod.allocateInst(sizeof(AllocExistentialBoxInst),
alignof(AllocExistentialBoxInst));
for (ProtocolConformanceRef C : Conformances)
declareWitnessTable(Mod, C);
return ::new (Buffer) AllocExistentialBoxInst(Loc,
ExistentialType,
ConcreteType,
Conformances, F);
}
BuiltinInst *BuiltinInst::create(SILDebugLocation Loc, Identifier Name,
SILType ReturnType,
ArrayRef<Substitution> Substitutions,
ArrayRef<SILValue> Args,
SILFunction &F) {
void *Buffer = F.getModule().allocateInst(
sizeof(BuiltinInst)
+ decltype(Operands)::getExtraSize(Args.size())
+ sizeof(Substitution) * Substitutions.size(),
alignof(BuiltinInst));
return ::new (Buffer) BuiltinInst(Loc, Name, ReturnType, Substitutions,
Args);
}
BuiltinInst::BuiltinInst(SILDebugLocation Loc, Identifier Name,
SILType ReturnType, ArrayRef<Substitution> Subs,
ArrayRef<SILValue> Args)
: SILInstruction(ValueKind::BuiltinInst, Loc, ReturnType), Name(Name),
NumSubstitutions(Subs.size()), Operands(this, Args) {
static_assert(IsTriviallyCopyable<Substitution>::value,
"assuming Substitution is trivially copyable");
memcpy(getSubstitutionsStorage(), Subs.begin(),
sizeof(Substitution) * Subs.size());
}
ApplyInst::ApplyInst(SILDebugLocation Loc, SILValue Callee,
SILType SubstCalleeTy, SILType Result,
ArrayRef<Substitution> Subs, ArrayRef<SILValue> Args,
bool isNonThrowing)
: ApplyInstBase(ValueKind::ApplyInst, Loc, Callee, SubstCalleeTy, Subs,
Args, Result) {
setNonThrowing(isNonThrowing);
}
ApplyInst *ApplyInst::create(SILDebugLocation Loc, SILValue Callee,
SILType SubstCalleeTy, SILType Result,
ArrayRef<Substitution> Subs,
ArrayRef<SILValue> Args, bool isNonThrowing,
SILFunction &F) {
void *Buffer = allocate(F, Subs, Args);
return ::new(Buffer) ApplyInst(Loc, Callee, SubstCalleeTy,
Result, Subs, Args, isNonThrowing);
}
bool swift::doesApplyCalleeHaveSemantics(SILValue callee, StringRef semantics) {
if (auto *FRI = dyn_cast<FunctionRefInst>(callee))
if (auto *F = FRI->getReferencedFunction())
return F->hasSemanticsAttr(semantics);
return false;
}
void *swift::allocateApplyInst(SILFunction &F, size_t size, size_t alignment) {
return F.getModule().allocateInst(size, alignment);
}
PartialApplyInst::PartialApplyInst(SILDebugLocation Loc, SILValue Callee,
SILType SubstCalleeTy,
ArrayRef<Substitution> Subs,
ArrayRef<SILValue> Args, SILType ClosureType)
// FIXME: the callee should have a lowered SIL function type, and
// PartialApplyInst
// should derive the type of its result by partially applying the callee's
// type.
: ApplyInstBase(ValueKind::PartialApplyInst, Loc, Callee, SubstCalleeTy,
Subs, Args, ClosureType) {}
PartialApplyInst *
PartialApplyInst::create(SILDebugLocation Loc, SILValue Callee,
SILType SubstCalleeTy, ArrayRef<Substitution> Subs,
ArrayRef<SILValue> Args, SILType ClosureType,
SILFunction &F) {
void *Buffer = allocate(F, Subs, Args);
return ::new(Buffer) PartialApplyInst(Loc, Callee, SubstCalleeTy,
Subs, Args, ClosureType);
}
TryApplyInstBase::TryApplyInstBase(ValueKind valueKind, SILDebugLocation Loc,
SILBasicBlock *normalBB,
SILBasicBlock *errorBB)
: TermInst(valueKind, Loc), DestBBs{{this, normalBB}, {this, errorBB}} {}
TryApplyInst::TryApplyInst(SILDebugLocation Loc, SILValue callee,
SILType substCalleeTy, ArrayRef<Substitution> subs,
ArrayRef<SILValue> args, SILBasicBlock *normalBB,
SILBasicBlock *errorBB)
: ApplyInstBase(ValueKind::TryApplyInst, Loc, callee, substCalleeTy, subs,
args, normalBB, errorBB) {}
TryApplyInst *TryApplyInst::create(SILDebugLocation Loc, SILValue callee,
SILType substCalleeTy,
ArrayRef<Substitution> subs,
ArrayRef<SILValue> args,
SILBasicBlock *normalBB,
SILBasicBlock *errorBB, SILFunction &F) {
void *buffer = allocate(F, subs, args);
return ::new (buffer)
TryApplyInst(Loc, callee, substCalleeTy, subs, args, normalBB, errorBB);
}
FunctionRefInst::FunctionRefInst(SILDebugLocation Loc, SILFunction *F)
: LiteralInst(ValueKind::FunctionRefInst, Loc, F->getLoweredType()),
Function(F) {
F->incrementRefCount();
}
FunctionRefInst::~FunctionRefInst() {
if (Function)
Function->decrementRefCount();
}
void FunctionRefInst::dropReferencedFunction() {
if (Function)
Function->decrementRefCount();
Function = nullptr;
}
AllocGlobalInst::AllocGlobalInst(SILDebugLocation Loc,
SILGlobalVariable *Global)
: SILInstruction(ValueKind::AllocGlobalInst, Loc),
Global(Global) {}
AllocGlobalInst::AllocGlobalInst(SILDebugLocation Loc)
: SILInstruction(ValueKind::AllocGlobalInst, Loc) {}
GlobalAddrInst::GlobalAddrInst(SILDebugLocation Loc,
SILGlobalVariable *Global)
: LiteralInst(ValueKind::GlobalAddrInst, Loc,
Global->getLoweredType().getAddressType()),
Global(Global) {}
GlobalAddrInst::GlobalAddrInst(SILDebugLocation Loc, SILType Ty)
: LiteralInst(ValueKind::GlobalAddrInst, Loc, Ty), Global(nullptr) {}
const IntrinsicInfo &BuiltinInst::getIntrinsicInfo() const {
return getModule().getIntrinsicInfo(getName());
}
const BuiltinInfo &BuiltinInst::getBuiltinInfo() const {
return getModule().getBuiltinInfo(getName());
}
static unsigned getWordsForBitWidth(unsigned bits) {
return (bits + llvm::integerPartWidth - 1)/llvm::integerPartWidth;
}
template<typename INST>
static void *allocateLiteralInstWithTextSize(SILFunction &F, unsigned length) {
return F.getModule().allocateInst(sizeof(INST) + length, alignof(INST));
}
template<typename INST>
static void *allocateLiteralInstWithBitSize(SILFunction &F, unsigned bits) {
unsigned words = getWordsForBitWidth(bits);
return F.getModule().allocateInst(
sizeof(INST) + sizeof(llvm::integerPart)*words, alignof(INST));
}
IntegerLiteralInst::IntegerLiteralInst(SILDebugLocation Loc, SILType Ty,
const llvm::APInt &Value)
: LiteralInst(ValueKind::IntegerLiteralInst, Loc, Ty),
numBits(Value.getBitWidth()) {
std::uninitialized_copy_n(Value.getRawData(), Value.getNumWords(),
getTrailingObjects<llvm::integerPart>());
}
IntegerLiteralInst *IntegerLiteralInst::create(SILDebugLocation Loc,
SILType Ty, const APInt &Value,
SILFunction &B) {
auto intTy = Ty.castTo<BuiltinIntegerType>();
assert(intTy->getGreatestWidth() == Value.getBitWidth() &&
"IntegerLiteralInst APInt value's bit width doesn't match type");
(void)intTy;
void *buf = allocateLiteralInstWithBitSize<IntegerLiteralInst>(B,
Value.getBitWidth());
return ::new (buf) IntegerLiteralInst(Loc, Ty, Value);
}
IntegerLiteralInst *IntegerLiteralInst::create(SILDebugLocation Loc,
SILType Ty, intmax_t Value,
SILFunction &B) {
auto intTy = Ty.castTo<BuiltinIntegerType>();
return create(Loc, Ty,
APInt(intTy->getGreatestWidth(), Value), B);
}
IntegerLiteralInst *IntegerLiteralInst::create(IntegerLiteralExpr *E,
SILDebugLocation Loc,
SILFunction &F) {
return create(
Loc, SILType::getBuiltinIntegerType(
E->getType()->castTo<BuiltinIntegerType>()->getGreatestWidth(),
F.getASTContext()),
E->getValue(), F);
}
/// getValue - Return the APInt for the underlying integer literal.
APInt IntegerLiteralInst::getValue() const {
return APInt(numBits, {getTrailingObjects<llvm::integerPart>(),
getWordsForBitWidth(numBits)});
}
FloatLiteralInst::FloatLiteralInst(SILDebugLocation Loc, SILType Ty,
const APInt &Bits)
: LiteralInst(ValueKind::FloatLiteralInst, Loc, Ty),
numBits(Bits.getBitWidth()) {
std::uninitialized_copy_n(Bits.getRawData(), Bits.getNumWords(),
getTrailingObjects<llvm::integerPart>());
}
FloatLiteralInst *FloatLiteralInst::create(SILDebugLocation Loc, SILType Ty,
const APFloat &Value,
SILFunction &B) {
auto floatTy = Ty.castTo<BuiltinFloatType>();
assert(&floatTy->getAPFloatSemantics() == &Value.getSemantics() &&
"FloatLiteralInst value's APFloat semantics do not match type");
(void)floatTy;
APInt Bits = Value.bitcastToAPInt();
void *buf = allocateLiteralInstWithBitSize<FloatLiteralInst>(B,
Bits.getBitWidth());
return ::new (buf) FloatLiteralInst(Loc, Ty, Bits);
}
FloatLiteralInst *FloatLiteralInst::create(FloatLiteralExpr *E,
SILDebugLocation Loc,
SILFunction &F) {
return create(Loc,
// Builtin floating-point types are always valid SIL types.
SILType::getBuiltinFloatType(
E->getType()->castTo<BuiltinFloatType>()->getFPKind(),
F.getASTContext()),
E->getValue(), F);
}
APInt FloatLiteralInst::getBits() const {
return APInt(numBits, {getTrailingObjects<llvm::integerPart>(),
getWordsForBitWidth(numBits)});
}
APFloat FloatLiteralInst::getValue() const {
return APFloat(getType().castTo<BuiltinFloatType>()->getAPFloatSemantics(),
getBits());
}
StringLiteralInst::StringLiteralInst(SILDebugLocation Loc, StringRef Text,
Encoding encoding, SILType Ty)
: LiteralInst(ValueKind::StringLiteralInst, Loc, Ty), Length(Text.size()),
TheEncoding(encoding) {
memcpy(getTrailingObjects<char>(), Text.data(), Text.size());
}
StringLiteralInst *StringLiteralInst::create(SILDebugLocation Loc,
StringRef text, Encoding encoding,
SILFunction &F) {
void *buf
= allocateLiteralInstWithTextSize<StringLiteralInst>(F, text.size());
auto Ty = SILType::getRawPointerType(F.getModule().getASTContext());
return ::new (buf) StringLiteralInst(Loc, text, encoding, Ty);
}
uint64_t StringLiteralInst::getCodeUnitCount() {
if (TheEncoding == Encoding::UTF16)
return unicode::getUTF16Length(getValue());
return Length;
}
StoreInst::StoreInst(SILDebugLocation Loc, SILValue Src, SILValue Dest)
: SILInstruction(ValueKind::StoreInst, Loc), Operands(this, Src, Dest) {}
AssignInst::AssignInst(SILDebugLocation Loc, SILValue Src, SILValue Dest)
: SILInstruction(ValueKind::AssignInst, Loc), Operands(this, Src, Dest) {}
MarkFunctionEscapeInst *
MarkFunctionEscapeInst::create(SILDebugLocation Loc,
ArrayRef<SILValue> Elements, SILFunction &F) {
void *Buffer = F.getModule().allocateInst(sizeof(MarkFunctionEscapeInst) +
decltype(Operands)::getExtraSize(Elements.size()),
alignof(MarkFunctionEscapeInst));
return ::new(Buffer) MarkFunctionEscapeInst(Loc, Elements);
}
MarkFunctionEscapeInst::MarkFunctionEscapeInst(SILDebugLocation Loc,
ArrayRef<SILValue> Elems)
: SILInstruction(ValueKind::MarkFunctionEscapeInst, Loc),
Operands(this, Elems) {}
static SILType getPinResultType(SILType operandType) {
return SILType::getPrimitiveObjectType(
OptionalType::get(operandType.getSwiftRValueType())->getCanonicalType());
}
StrongPinInst::StrongPinInst(SILDebugLocation Loc, SILValue operand,
Atomicity atomicity)
: UnaryInstructionBase(Loc, operand, getPinResultType(operand->getType())) {
setAtomicity(atomicity);
}
CopyAddrInst::CopyAddrInst(SILDebugLocation Loc, SILValue SrcLValue,
SILValue DestLValue, IsTake_t isTakeOfSrc,
IsInitialization_t isInitializationOfDest)
: SILInstruction(ValueKind::CopyAddrInst, Loc), IsTakeOfSrc(isTakeOfSrc),
IsInitializationOfDest(isInitializationOfDest),
Operands(this, SrcLValue, DestLValue) {}
UncheckedRefCastAddrInst::UncheckedRefCastAddrInst(SILDebugLocation Loc,
SILValue src,
CanType srcType,
SILValue dest,
CanType targetType)
: SILInstruction(ValueKind::UncheckedRefCastAddrInst, Loc),
Operands(this, src, dest), SourceType(srcType), TargetType(targetType) {}
UnconditionalCheckedCastAddrInst::UnconditionalCheckedCastAddrInst(
SILDebugLocation Loc, CastConsumptionKind consumption, SILValue src,
CanType srcType, SILValue dest, CanType targetType)
: SILInstruction(ValueKind::UnconditionalCheckedCastAddrInst, Loc),
Operands(this, src, dest), ConsumptionKind(consumption),
SourceType(srcType), TargetType(targetType) {}
StructInst *StructInst::create(SILDebugLocation Loc, SILType Ty,
ArrayRef<SILValue> Elements, SILFunction &F) {
void *Buffer = F.getModule().allocateInst(sizeof(StructInst) +
decltype(Operands)::getExtraSize(Elements.size()),
alignof(StructInst));
return ::new(Buffer) StructInst(Loc, Ty, Elements);
}
StructInst::StructInst(SILDebugLocation Loc, SILType Ty,
ArrayRef<SILValue> Elems)
: SILInstruction(ValueKind::StructInst, Loc, Ty), Operands(this, Elems) {
assert(!Ty.getStructOrBoundGenericStruct()->hasUnreferenceableStorage());
}
TupleInst *TupleInst::create(SILDebugLocation Loc, SILType Ty,
ArrayRef<SILValue> Elements, SILFunction &F) {
void *Buffer = F.getModule().allocateInst(sizeof(TupleInst) +
decltype(Operands)::getExtraSize(Elements.size()),
alignof(TupleInst));
return ::new(Buffer) TupleInst(Loc, Ty, Elements);
}
TupleInst::TupleInst(SILDebugLocation Loc, SILType Ty,
ArrayRef<SILValue> Elems)
: SILInstruction(ValueKind::TupleInst, Loc, Ty), Operands(this, Elems) {}
MetatypeInst::MetatypeInst(SILDebugLocation Loc, SILType Metatype)
: SILInstruction(ValueKind::MetatypeInst, Loc, Metatype) {}
bool TupleExtractInst::isTrivialEltOfOneRCIDTuple() const {
SILModule &Mod = getModule();
// If we are not trivial, bail.
if (!getType().isTrivial(Mod))
return false;
// If the elt we are extracting is trivial, we cannot have any non trivial
// fields.
if (getOperand()->getType().isTrivial(Mod))
return false;
// Ok, now we know that our tuple has non-trivial fields. Make sure that our
// parent tuple has only one non-trivial field.
bool FoundNonTrivialField = false;
SILType OpTy = getOperand()->getType();
unsigned FieldNo = getFieldNo();
// For each element index of the tuple...
for (unsigned i = 0, e = getNumTupleElts(); i != e; ++i) {
// If the element index is the one we are extracting, skip it...
if (i == FieldNo)
continue;
// Otherwise check if we have a non-trivial type. If we don't have one,
// continue.
if (OpTy.getTupleElementType(i).isTrivial(Mod))
continue;
// Ok, this type is non-trivial. If we have not seen a non-trivial field
// yet, set the FoundNonTrivialField flag.
if (!FoundNonTrivialField) {
FoundNonTrivialField = true;
continue;
}
// If we have seen a field and thus the FoundNonTrivialField flag is set,
// return false.
return false;
}
// We found only one trivial field.
assert(FoundNonTrivialField && "Tuple is non-trivial, but does not have a "
"non-trivial element?!");
return true;
}
bool TupleExtractInst::isEltOnlyNonTrivialElt() const {
SILModule &Mod = getModule();
// If the elt we are extracting is trivial, we cannot be a non-trivial
// field... return false.
if (getType().isTrivial(Mod))
return false;
// Ok, we know that the elt we are extracting is non-trivial. Make sure that
// we have no other non-trivial elts.
SILType OpTy = getOperand()->getType();
unsigned FieldNo = getFieldNo();
// For each element index of the tuple...
for (unsigned i = 0, e = getNumTupleElts(); i != e; ++i) {
// If the element index is the one we are extracting, skip it...
if (i == FieldNo)
continue;
// Otherwise check if we have a non-trivial type. If we don't have one,
// continue.
if (OpTy.getTupleElementType(i).isTrivial(Mod))
continue;
// If we do have a non-trivial type, return false. We have multiple
// non-trivial types violating our condition.
return false;
}
// We checked every other elt of the tuple and did not find any
// non-trivial elt except for ourselves. Return true.
return true;
}
bool StructExtractInst::isTrivialFieldOfOneRCIDStruct() const {
SILModule &Mod = getModule();
// If we are not trivial, bail.
if (!getType().isTrivial(Mod))
return false;
SILType StructTy = getOperand()->getType();
// If the elt we are extracting is trivial, we cannot have any non trivial
// fields.
if (StructTy.isTrivial(Mod))
return false;
// Ok, now we know that our tuple has non-trivial fields. Make sure that our
// parent tuple has only one non-trivial field.
bool FoundNonTrivialField = false;
// For each element index of the tuple...
for (VarDecl *D : getStructDecl()->getStoredProperties()) {
// If the field is the one we are extracting, skip it...
if (Field == D)
continue;
// Otherwise check if we have a non-trivial type. If we don't have one,
// continue.
if (StructTy.getFieldType(D, Mod).isTrivial(Mod))
continue;
// Ok, this type is non-trivial. If we have not seen a non-trivial field
// yet, set the FoundNonTrivialField flag.
if (!FoundNonTrivialField) {
FoundNonTrivialField = true;
continue;
}
// If we have seen a field and thus the FoundNonTrivialField flag is set,
// return false.
return false;
}
// We found only one trivial field.
assert(FoundNonTrivialField && "Struct is non-trivial, but does not have a "
"non-trivial field?!");
return true;
}
/// Return true if we are extracting the only non-trivial field of out parent
/// struct. This implies that a ref count operation on the aggregate is
/// equivalent to a ref count operation on this field.
bool StructExtractInst::isFieldOnlyNonTrivialField() const {
SILModule &Mod = getModule();
// If the field we are extracting is trivial, we cannot be a non-trivial
// field... return false.
if (getType().isTrivial(Mod))
return false;
SILType StructTy = getOperand()->getType();
// Ok, we are visiting a non-trivial field. Then for every stored field...
for (VarDecl *D : getStructDecl()->getStoredProperties()) {
// If we are visiting our own field continue.
if (Field == D)
continue;
// Ok, we have a field that is not equal to the field we are
// extracting. If that field is trivial, we do not care about
// it... continue.
if (StructTy.getFieldType(D, Mod).isTrivial(Mod))
continue;
// We have found a non trivial member that is not the member we are
// extracting, fail.
return false;
}
// We checked every other field of the struct and did not find any
// non-trivial fields except for ourselves. Return true.
return true;
}
//===----------------------------------------------------------------------===//
// Instructions representing terminators
//===----------------------------------------------------------------------===//
TermInst::SuccessorListTy TermInst::getSuccessors() {
#define TERMINATOR(TYPE, PARENT, EFFECT, RELEASING) \
if (auto I = dyn_cast<TYPE>(this)) \
return I->getSuccessors();
#include "swift/SIL/SILNodes.def"
llvm_unreachable("not a terminator?!");
}
bool TermInst::isFunctionExiting() const {
switch (getTermKind()) {
case TermKind::BranchInst:
case TermKind::CondBranchInst:
case TermKind::SwitchValueInst:
case TermKind::SwitchEnumInst:
case TermKind::SwitchEnumAddrInst:
case TermKind::DynamicMethodBranchInst:
case TermKind::CheckedCastBranchInst:
case TermKind::CheckedCastAddrBranchInst:
case TermKind::UnreachableInst:
case TermKind::TryApplyInst:
return false;
case TermKind::ReturnInst:
case TermKind::ThrowInst:
return true;
}
}
BranchInst::BranchInst(SILDebugLocation Loc, SILBasicBlock *DestBB,
ArrayRef<SILValue> Args)
: TermInst(ValueKind::BranchInst, Loc), DestBB(this, DestBB),
Operands(this, Args) {}
BranchInst *BranchInst::create(SILDebugLocation Loc, SILBasicBlock *DestBB,
SILFunction &F) {
return create(Loc, DestBB, {}, F);
}
BranchInst *BranchInst::create(SILDebugLocation Loc,
SILBasicBlock *DestBB, ArrayRef<SILValue> Args,
SILFunction &F) {
void *Buffer = F.getModule().allocateInst(sizeof(BranchInst) +
decltype(Operands)::getExtraSize(Args.size()),
alignof(BranchInst));
return ::new (Buffer) BranchInst(Loc, DestBB, Args);
}
CondBranchInst::CondBranchInst(SILDebugLocation Loc, SILValue Condition,
SILBasicBlock *TrueBB, SILBasicBlock *FalseBB,
ArrayRef<SILValue> Args, unsigned NumTrue,
unsigned NumFalse)
: TermInst(ValueKind::CondBranchInst, Loc),
DestBBs{{this, TrueBB}, {this, FalseBB}}, NumTrueArgs(NumTrue),
NumFalseArgs(NumFalse), Operands(this, Args, Condition) {
assert(Args.size() == (NumTrueArgs + NumFalseArgs) &&
"Invalid number of args");
assert(TrueBB != FalseBB && "Identical destinations");
}
CondBranchInst *CondBranchInst::create(SILDebugLocation Loc,
SILValue Condition,
SILBasicBlock *TrueBB,
SILBasicBlock *FalseBB, SILFunction &F) {
return create(Loc, Condition, TrueBB, {}, FalseBB, {}, F);
}
CondBranchInst *
CondBranchInst::create(SILDebugLocation Loc, SILValue Condition,
SILBasicBlock *TrueBB, ArrayRef<SILValue> TrueArgs,
SILBasicBlock *FalseBB, ArrayRef<SILValue> FalseArgs,
SILFunction &F) {
SmallVector<SILValue, 4> Args;
Args.append(TrueArgs.begin(), TrueArgs.end());
Args.append(FalseArgs.begin(), FalseArgs.end());
void *Buffer = F.getModule().allocateInst(sizeof(CondBranchInst) +
decltype(Operands)::getExtraSize(Args.size()),
alignof(CondBranchInst));
return ::new (Buffer) CondBranchInst(Loc, Condition, TrueBB, FalseBB, Args,
TrueArgs.size(), FalseArgs.size());
}
OperandValueArrayRef CondBranchInst::getTrueArgs() const {
return Operands.asValueArray().slice(1, NumTrueArgs);
}
OperandValueArrayRef CondBranchInst::getFalseArgs() const {
return Operands.asValueArray().slice(1 + NumTrueArgs, NumFalseArgs);
}
SILValue CondBranchInst::getArgForDestBB(const SILBasicBlock *DestBB,
const SILArgument *Arg) const {
return getArgForDestBB(DestBB, Arg->getIndex());
}
SILValue CondBranchInst::getArgForDestBB(const SILBasicBlock *DestBB,
unsigned ArgIndex) const {
// If TrueBB and FalseBB equal, we cannot find an arg for this DestBB so
// return an empty SILValue.
if (getTrueBB() == getFalseBB()) {
assert(DestBB == getTrueBB() && "DestBB is not a target of this cond_br");
return SILValue();
}
if (DestBB == getTrueBB())
return Operands[1 + ArgIndex].get();
assert(DestBB == getFalseBB()
&& "By process of elimination BB must be false BB");
return Operands[1 + NumTrueArgs + ArgIndex].get();
}
ArrayRef<Operand> CondBranchInst::getTrueOperands() const {
if (NumTrueArgs == 0)
return ArrayRef<Operand>();
return ArrayRef<Operand>(&Operands[1], NumTrueArgs);
}
MutableArrayRef<Operand> CondBranchInst::getTrueOperands() {
if (NumTrueArgs == 0)
return MutableArrayRef<Operand>();
return MutableArrayRef<Operand>(&Operands[1], NumTrueArgs);
}
ArrayRef<Operand> CondBranchInst::getFalseOperands() const {
if (NumFalseArgs == 0)
return ArrayRef<Operand>();
return ArrayRef<Operand>(&Operands[1+NumTrueArgs], NumFalseArgs);
}
MutableArrayRef<Operand> CondBranchInst::getFalseOperands() {
if (NumFalseArgs == 0)
return MutableArrayRef<Operand>();
return MutableArrayRef<Operand>(&Operands[1+NumTrueArgs], NumFalseArgs);
}
void CondBranchInst::swapSuccessors() {
// Swap our destinations.
SILBasicBlock *First = DestBBs[0].getBB();
DestBBs[0] = DestBBs[1].getBB();
DestBBs[1] = First;
// If we don't have any arguments return.
if (!NumTrueArgs && !NumFalseArgs)
return;
// Otherwise swap our true and false arguments.
MutableArrayRef<Operand> Ops = getAllOperands();
llvm::SmallVector<SILValue, 4> TrueOps;
for (SILValue V : getTrueArgs())
TrueOps.push_back(V);
auto FalseArgs = getFalseArgs();
for (unsigned i = 0, e = NumFalseArgs; i < e; ++i) {
Ops[1+i].set(FalseArgs[i]);
}
for (unsigned i = 0, e = NumTrueArgs; i < e; ++i) {
Ops[1+i+NumFalseArgs].set(TrueOps[i]);
}
// Finally swap the number of arguments that we have.
std::swap(NumTrueArgs, NumFalseArgs);
}
SwitchValueInst::SwitchValueInst(SILDebugLocation Loc, SILValue Operand,
SILBasicBlock *DefaultBB,
ArrayRef<SILValue> Cases,
ArrayRef<SILBasicBlock *> BBs)
: TermInst(ValueKind::SwitchValueInst, Loc), NumCases(Cases.size()),
HasDefault(bool(DefaultBB)), Operands(this, Cases, Operand) {
// Initialize the successor array.
auto *succs = getSuccessorBuf();
unsigned OperandBitWidth = 0;
if (auto OperandTy = Operand->getType().getAs<BuiltinIntegerType>()) {
OperandBitWidth = OperandTy->getGreatestWidth();
}
for (unsigned i = 0, size = Cases.size(); i < size; ++i) {
// If we have undef, just add the case and continue.
if (isa<SILUndef>(Cases[i])) {
::new (succs + i) SILSuccessor(this, BBs[i]);
continue;
}
if (OperandBitWidth) {
auto *IL = dyn_cast<IntegerLiteralInst>(Cases[i]);
assert(IL && "switch_value case value should be of an integer type");
assert(IL->getValue().getBitWidth() == OperandBitWidth &&
"switch_value case value is not same bit width as operand");
(void)IL;
} else {
auto *FR = dyn_cast<FunctionRefInst>(Cases[i]);
if (!FR) {
if (auto *CF = dyn_cast<ConvertFunctionInst>(Cases[i])) {
FR = dyn_cast<FunctionRefInst>(CF->getOperand());
}
}
assert(FR && "switch_value case value should be a function reference");
}
::new (succs + i) SILSuccessor(this, BBs[i]);
}
if (HasDefault)
::new (succs + NumCases) SILSuccessor(this, DefaultBB);
}
SwitchValueInst::~SwitchValueInst() {
// Destroy the successor records to keep the CFG up to date.
auto *succs = getSuccessorBuf();
for (unsigned i = 0, end = NumCases + HasDefault; i < end; ++i) {
succs[i].~SILSuccessor();
}
}
SwitchValueInst *SwitchValueInst::create(
SILDebugLocation Loc, SILValue Operand, SILBasicBlock *DefaultBB,
ArrayRef<std::pair<SILValue, SILBasicBlock *>> CaseBBs, SILFunction &F) {
// Allocate enough room for the instruction with tail-allocated data for all
// the case values and the SILSuccessor arrays. There are `CaseBBs.size()`
// SILValues and `CaseBBs.size() + (DefaultBB ? 1 : 0)` successors.
SmallVector<SILValue, 8> Cases;
SmallVector<SILBasicBlock *, 8> BBs;
unsigned numCases = CaseBBs.size();
unsigned numSuccessors = numCases + (DefaultBB ? 1 : 0);
for (auto pair: CaseBBs) {
Cases.push_back(pair.first);
BBs.push_back(pair.second);
}
size_t bufSize = sizeof(SwitchValueInst) +
decltype(Operands)::getExtraSize(Cases.size()) +
sizeof(SILSuccessor) * numSuccessors;
void *buf = F.getModule().allocateInst(bufSize, alignof(SwitchValueInst));
return ::new (buf) SwitchValueInst(Loc, Operand, DefaultBB, Cases, BBs);
}
SelectValueInst::SelectValueInst(SILDebugLocation Loc, SILValue Operand,
SILType Type, SILValue DefaultResult,
ArrayRef<SILValue> CaseValuesAndResults)
: SelectInstBase(ValueKind::SelectValueInst, Loc, Type,
CaseValuesAndResults.size() / 2, bool(DefaultResult),
CaseValuesAndResults, Operand) {
unsigned OperandBitWidth = 0;
if (auto OperandTy = Operand->getType().getAs<BuiltinIntegerType>()) {
OperandBitWidth = OperandTy->getGreatestWidth();
}
}
SelectValueInst::~SelectValueInst() {
}
SelectValueInst *
SelectValueInst::create(SILDebugLocation Loc, SILValue Operand, SILType Type,
SILValue DefaultResult,
ArrayRef<std::pair<SILValue, SILValue>> CaseValues,
SILFunction &F) {
// Allocate enough room for the instruction with tail-allocated data for all
// the case values and the SILSuccessor arrays. There are `CaseBBs.size()`
// SILValues and `CaseBBs.size() + (DefaultBB ? 1 : 0)` successors.
SmallVector<SILValue, 8> CaseValuesAndResults;
for (auto pair : CaseValues) {
CaseValuesAndResults.push_back(pair.first);
CaseValuesAndResults.push_back(pair.second);
}
if ((bool)DefaultResult)
CaseValuesAndResults.push_back(DefaultResult);
size_t bufSize = sizeof(SelectValueInst) + decltype(Operands)::getExtraSize(
CaseValuesAndResults.size());
void *buf = F.getModule().allocateInst(bufSize, alignof(SelectValueInst));
return ::new (buf)
SelectValueInst(Loc, Operand, Type, DefaultResult, CaseValuesAndResults);
}
static SmallVector<SILValue, 4>
getCaseOperands(ArrayRef<std::pair<EnumElementDecl*, SILValue>> CaseValues,
SILValue DefaultValue) {
SmallVector<SILValue, 4> result;
for (auto &pair : CaseValues)
result.push_back(pair.second);
if (DefaultValue)
result.push_back(DefaultValue);
return result;
}
SelectEnumInstBase::SelectEnumInstBase(
ValueKind Kind, SILDebugLocation Loc, SILValue Operand, SILType Ty,
SILValue DefaultValue,
ArrayRef<std::pair<EnumElementDecl *, SILValue>> CaseValues)
: SelectInstBase(Kind, Loc, Ty, CaseValues.size(), bool(DefaultValue),
getCaseOperands(CaseValues, DefaultValue), Operand) {
// Initialize the case and successor arrays.
auto *cases = getCaseBuf();
for (unsigned i = 0, size = CaseValues.size(); i < size; ++i) {
cases[i] = CaseValues[i].first;
}
}
template <typename SELECT_ENUM_INST>
SELECT_ENUM_INST *SelectEnumInstBase::createSelectEnum(
SILDebugLocation Loc, SILValue Operand, SILType Ty, SILValue DefaultValue,
ArrayRef<std::pair<EnumElementDecl *, SILValue>> CaseValues,
SILFunction &F) {
// Allocate enough room for the instruction with tail-allocated
// EnumElementDecl and operand arrays. There are `CaseBBs.size()` decls
// and `CaseBBs.size() + (DefaultBB ? 1 : 0)` values.
unsigned numCases = CaseValues.size();
void *buf = F.getModule().allocateInst(
sizeof(SELECT_ENUM_INST) + sizeof(EnumElementDecl*) * numCases
+ TailAllocatedOperandList<1>::getExtraSize(numCases + (bool)DefaultValue),
alignof(SELECT_ENUM_INST));
return ::new (buf) SELECT_ENUM_INST(Loc,Operand,Ty,DefaultValue,CaseValues);