1 //===-- Instructions.cpp - Implement the LLVM instructions ----------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements all of the non-inline methods for the LLVM instruction
13 //===----------------------------------------------------------------------===//
15 #include "llvm/IR/Instructions.h"
16 #include "LLVMContextImpl.h"
17 #include "llvm/IR/CallSite.h"
18 #include "llvm/IR/ConstantRange.h"
19 #include "llvm/IR/Constants.h"
20 #include "llvm/IR/DataLayout.h"
21 #include "llvm/IR/DerivedTypes.h"
22 #include "llvm/IR/Function.h"
23 #include "llvm/IR/Module.h"
24 #include "llvm/IR/Operator.h"
25 #include "llvm/Support/ErrorHandling.h"
26 #include "llvm/Support/MathExtras.h"
29 //===----------------------------------------------------------------------===//
31 //===----------------------------------------------------------------------===//
33 User::op_iterator CallSite::getCallee() const {
34 Instruction *II(getInstruction());
36 ? cast<CallInst>(II)->op_end() - 1 // Skip Callee
37 : cast<InvokeInst>(II)->op_end() - 3; // Skip BB, BB, Callee
40 //===----------------------------------------------------------------------===//
41 // TerminatorInst Class
42 //===----------------------------------------------------------------------===//
44 // Out of line virtual method, so the vtable, etc has a home.
45 TerminatorInst::~TerminatorInst() {
48 //===----------------------------------------------------------------------===//
49 // UnaryInstruction Class
50 //===----------------------------------------------------------------------===//
52 // Out of line virtual method, so the vtable, etc has a home.
53 UnaryInstruction::~UnaryInstruction() {
56 //===----------------------------------------------------------------------===//
58 //===----------------------------------------------------------------------===//
60 /// areInvalidOperands - Return a string if the specified operands are invalid
61 /// for a select operation, otherwise return null.
62 const char *SelectInst::areInvalidOperands(Value *Op0, Value *Op1, Value *Op2) {
63 if (Op1->getType() != Op2->getType())
64 return "both values to select must have same type";
66 if (Op1->getType()->isTokenTy())
67 return "select values cannot have token type";
69 if (VectorType *VT = dyn_cast<VectorType>(Op0->getType())) {
71 if (VT->getElementType() != Type::getInt1Ty(Op0->getContext()))
72 return "vector select condition element type must be i1";
73 VectorType *ET = dyn_cast<VectorType>(Op1->getType());
75 return "selected values for vector select must be vectors";
76 if (ET->getNumElements() != VT->getNumElements())
77 return "vector select requires selected vectors to have "
78 "the same vector length as select condition";
79 } else if (Op0->getType() != Type::getInt1Ty(Op0->getContext())) {
80 return "select condition must be i1 or <n x i1>";
86 //===----------------------------------------------------------------------===//
88 //===----------------------------------------------------------------------===//
90 PHINode::PHINode(const PHINode &PN)
91 : Instruction(PN.getType(), Instruction::PHI, nullptr, PN.getNumOperands()),
92 ReservedSpace(PN.getNumOperands()) {
93 allocHungoffUses(PN.getNumOperands());
94 std::copy(PN.op_begin(), PN.op_end(), op_begin());
95 std::copy(PN.block_begin(), PN.block_end(), block_begin());
96 SubclassOptionalData = PN.SubclassOptionalData;
99 // removeIncomingValue - Remove an incoming value. This is useful if a
100 // predecessor basic block is deleted.
101 Value *PHINode::removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty) {
102 Value *Removed = getIncomingValue(Idx);
104 // Move everything after this operand down.
106 // FIXME: we could just swap with the end of the list, then erase. However,
107 // clients might not expect this to happen. The code as it is thrashes the
108 // use/def lists, which is kinda lame.
109 std::copy(op_begin() + Idx + 1, op_end(), op_begin() + Idx);
110 std::copy(block_begin() + Idx + 1, block_end(), block_begin() + Idx);
112 // Nuke the last value.
113 Op<-1>().set(nullptr);
114 setNumHungOffUseOperands(getNumOperands() - 1);
116 // If the PHI node is dead, because it has zero entries, nuke it now.
117 if (getNumOperands() == 0 && DeletePHIIfEmpty) {
118 // If anyone is using this PHI, make them use a dummy value instead...
119 replaceAllUsesWith(UndefValue::get(getType()));
125 /// growOperands - grow operands - This grows the operand list in response
126 /// to a push_back style of operation. This grows the number of ops by 1.5
129 void PHINode::growOperands() {
130 unsigned e = getNumOperands();
131 unsigned NumOps = e + e / 2;
132 if (NumOps < 2) NumOps = 2; // 2 op PHI nodes are VERY common.
134 ReservedSpace = NumOps;
135 growHungoffUses(ReservedSpace, /* IsPhi */ true);
138 /// hasConstantValue - If the specified PHI node always merges together the same
139 /// value, return the value, otherwise return null.
140 Value *PHINode::hasConstantValue() const {
141 // Exploit the fact that phi nodes always have at least one entry.
142 Value *ConstantValue = getIncomingValue(0);
143 for (unsigned i = 1, e = getNumIncomingValues(); i != e; ++i)
144 if (getIncomingValue(i) != ConstantValue && getIncomingValue(i) != this) {
145 if (ConstantValue != this)
146 return nullptr; // Incoming values not all the same.
147 // The case where the first value is this PHI.
148 ConstantValue = getIncomingValue(i);
150 if (ConstantValue == this)
151 return UndefValue::get(getType());
152 return ConstantValue;
155 //===----------------------------------------------------------------------===//
156 // LandingPadInst Implementation
157 //===----------------------------------------------------------------------===//
159 LandingPadInst::LandingPadInst(Type *RetTy, unsigned NumReservedValues,
160 const Twine &NameStr, Instruction *InsertBefore)
161 : Instruction(RetTy, Instruction::LandingPad, nullptr, 0, InsertBefore) {
162 init(NumReservedValues, NameStr);
165 LandingPadInst::LandingPadInst(Type *RetTy, unsigned NumReservedValues,
166 const Twine &NameStr, BasicBlock *InsertAtEnd)
167 : Instruction(RetTy, Instruction::LandingPad, nullptr, 0, InsertAtEnd) {
168 init(NumReservedValues, NameStr);
171 LandingPadInst::LandingPadInst(const LandingPadInst &LP)
172 : Instruction(LP.getType(), Instruction::LandingPad, nullptr,
173 LP.getNumOperands()),
174 ReservedSpace(LP.getNumOperands()) {
175 allocHungoffUses(LP.getNumOperands());
176 Use *OL = getOperandList();
177 const Use *InOL = LP.getOperandList();
178 for (unsigned I = 0, E = ReservedSpace; I != E; ++I)
181 setCleanup(LP.isCleanup());
184 LandingPadInst *LandingPadInst::Create(Type *RetTy, unsigned NumReservedClauses,
185 const Twine &NameStr,
186 Instruction *InsertBefore) {
187 return new LandingPadInst(RetTy, NumReservedClauses, NameStr, InsertBefore);
190 LandingPadInst *LandingPadInst::Create(Type *RetTy, unsigned NumReservedClauses,
191 const Twine &NameStr,
192 BasicBlock *InsertAtEnd) {
193 return new LandingPadInst(RetTy, NumReservedClauses, NameStr, InsertAtEnd);
196 void LandingPadInst::init(unsigned NumReservedValues, const Twine &NameStr) {
197 ReservedSpace = NumReservedValues;
198 setNumHungOffUseOperands(0);
199 allocHungoffUses(ReservedSpace);
204 /// growOperands - grow operands - This grows the operand list in response to a
205 /// push_back style of operation. This grows the number of ops by 2 times.
206 void LandingPadInst::growOperands(unsigned Size) {
207 unsigned e = getNumOperands();
208 if (ReservedSpace >= e + Size) return;
209 ReservedSpace = (std::max(e, 1U) + Size / 2) * 2;
210 growHungoffUses(ReservedSpace);
213 void LandingPadInst::addClause(Constant *Val) {
214 unsigned OpNo = getNumOperands();
216 assert(OpNo < ReservedSpace && "Growing didn't work!");
217 setNumHungOffUseOperands(getNumOperands() + 1);
218 getOperandList()[OpNo] = Val;
221 //===----------------------------------------------------------------------===//
222 // CallInst Implementation
223 //===----------------------------------------------------------------------===//
225 CallInst::~CallInst() {
228 void CallInst::init(FunctionType *FTy, Value *Func, ArrayRef<Value *> Args,
229 ArrayRef<OperandBundleDef> Bundles, const Twine &NameStr) {
231 assert(getNumOperands() == Args.size() + CountBundleInputs(Bundles) + 1 &&
232 "NumOperands not set up?");
236 assert((Args.size() == FTy->getNumParams() ||
237 (FTy->isVarArg() && Args.size() > FTy->getNumParams())) &&
238 "Calling a function with bad signature!");
240 for (unsigned i = 0; i != Args.size(); ++i)
241 assert((i >= FTy->getNumParams() ||
242 FTy->getParamType(i) == Args[i]->getType()) &&
243 "Calling a function with a bad signature!");
246 std::copy(Args.begin(), Args.end(), op_begin());
248 auto It = populateBundleOperandInfos(Bundles, Args.size());
250 assert(It + 1 == op_end() && "Should add up!");
255 void CallInst::init(Value *Func, const Twine &NameStr) {
257 cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
258 assert(getNumOperands() == 1 && "NumOperands not set up?");
261 assert(FTy->getNumParams() == 0 && "Calling a function with bad signature");
266 CallInst::CallInst(Value *Func, const Twine &Name,
267 Instruction *InsertBefore)
268 : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
269 ->getElementType())->getReturnType(),
271 OperandTraits<CallInst>::op_end(this) - 1,
276 CallInst::CallInst(Value *Func, const Twine &Name,
277 BasicBlock *InsertAtEnd)
278 : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
279 ->getElementType())->getReturnType(),
281 OperandTraits<CallInst>::op_end(this) - 1,
286 CallInst::CallInst(const CallInst &CI)
287 : Instruction(CI.getType(), Instruction::Call,
288 OperandTraits<CallInst>::op_end(this) - CI.getNumOperands(),
289 CI.getNumOperands()),
290 AttributeList(CI.AttributeList), FTy(CI.FTy) {
291 setTailCallKind(CI.getTailCallKind());
292 setCallingConv(CI.getCallingConv());
294 std::copy(CI.op_begin(), CI.op_end(), op_begin());
295 std::copy(CI.bundle_op_info_begin(), CI.bundle_op_info_end(),
296 bundle_op_info_begin());
297 SubclassOptionalData = CI.SubclassOptionalData;
300 void CallInst::addAttribute(unsigned i, Attribute::AttrKind attr) {
301 AttributeSet PAL = getAttributes();
302 PAL = PAL.addAttribute(getContext(), i, attr);
306 void CallInst::addAttribute(unsigned i, StringRef Kind, StringRef Value) {
307 AttributeSet PAL = getAttributes();
308 PAL = PAL.addAttribute(getContext(), i, Kind, Value);
312 void CallInst::removeAttribute(unsigned i, Attribute attr) {
313 AttributeSet PAL = getAttributes();
315 LLVMContext &Context = getContext();
316 PAL = PAL.removeAttributes(Context, i,
317 AttributeSet::get(Context, i, B));
321 void CallInst::addDereferenceableAttr(unsigned i, uint64_t Bytes) {
322 AttributeSet PAL = getAttributes();
323 PAL = PAL.addDereferenceableAttr(getContext(), i, Bytes);
327 void CallInst::addDereferenceableOrNullAttr(unsigned i, uint64_t Bytes) {
328 AttributeSet PAL = getAttributes();
329 PAL = PAL.addDereferenceableOrNullAttr(getContext(), i, Bytes);
333 bool CallInst::paramHasAttr(unsigned i, Attribute::AttrKind A) const {
334 assert(i < (getNumArgOperands() + 1) && "Param index out of bounds!");
336 if (AttributeList.hasAttribute(i, A))
338 if (const Function *F = getCalledFunction())
339 return F->getAttributes().hasAttribute(i, A);
343 /// IsConstantOne - Return true only if val is constant int 1
344 static bool IsConstantOne(Value *val) {
345 assert(val && "IsConstantOne does not work with nullptr val");
346 const ConstantInt *CVal = dyn_cast<ConstantInt>(val);
347 return CVal && CVal->isOne();
350 static Instruction *createMalloc(Instruction *InsertBefore,
351 BasicBlock *InsertAtEnd, Type *IntPtrTy,
352 Type *AllocTy, Value *AllocSize,
353 Value *ArraySize, Function *MallocF,
355 assert(((!InsertBefore && InsertAtEnd) || (InsertBefore && !InsertAtEnd)) &&
356 "createMalloc needs either InsertBefore or InsertAtEnd");
358 // malloc(type) becomes:
359 // bitcast (i8* malloc(typeSize)) to type*
360 // malloc(type, arraySize) becomes:
361 // bitcast (i8 *malloc(typeSize*arraySize)) to type*
363 ArraySize = ConstantInt::get(IntPtrTy, 1);
364 else if (ArraySize->getType() != IntPtrTy) {
366 ArraySize = CastInst::CreateIntegerCast(ArraySize, IntPtrTy, false,
369 ArraySize = CastInst::CreateIntegerCast(ArraySize, IntPtrTy, false,
373 if (!IsConstantOne(ArraySize)) {
374 if (IsConstantOne(AllocSize)) {
375 AllocSize = ArraySize; // Operand * 1 = Operand
376 } else if (Constant *CO = dyn_cast<Constant>(ArraySize)) {
377 Constant *Scale = ConstantExpr::getIntegerCast(CO, IntPtrTy,
379 // Malloc arg is constant product of type size and array size
380 AllocSize = ConstantExpr::getMul(Scale, cast<Constant>(AllocSize));
382 // Multiply type size by the array size...
384 AllocSize = BinaryOperator::CreateMul(ArraySize, AllocSize,
385 "mallocsize", InsertBefore);
387 AllocSize = BinaryOperator::CreateMul(ArraySize, AllocSize,
388 "mallocsize", InsertAtEnd);
392 assert(AllocSize->getType() == IntPtrTy && "malloc arg is wrong size");
393 // Create the call to Malloc.
394 BasicBlock* BB = InsertBefore ? InsertBefore->getParent() : InsertAtEnd;
395 Module* M = BB->getParent()->getParent();
396 Type *BPTy = Type::getInt8PtrTy(BB->getContext());
397 Value *MallocFunc = MallocF;
399 // prototype malloc as "void *malloc(size_t)"
400 MallocFunc = M->getOrInsertFunction("malloc", BPTy, IntPtrTy, nullptr);
401 PointerType *AllocPtrType = PointerType::getUnqual(AllocTy);
402 CallInst *MCall = nullptr;
403 Instruction *Result = nullptr;
405 MCall = CallInst::Create(MallocFunc, AllocSize, "malloccall", InsertBefore);
407 if (Result->getType() != AllocPtrType)
408 // Create a cast instruction to convert to the right type...
409 Result = new BitCastInst(MCall, AllocPtrType, Name, InsertBefore);
411 MCall = CallInst::Create(MallocFunc, AllocSize, "malloccall");
413 if (Result->getType() != AllocPtrType) {
414 InsertAtEnd->getInstList().push_back(MCall);
415 // Create a cast instruction to convert to the right type...
416 Result = new BitCastInst(MCall, AllocPtrType, Name);
419 MCall->setTailCall();
420 if (Function *F = dyn_cast<Function>(MallocFunc)) {
421 MCall->setCallingConv(F->getCallingConv());
422 if (!F->doesNotAlias(0)) F->setDoesNotAlias(0);
424 assert(!MCall->getType()->isVoidTy() && "Malloc has void return type");
429 /// CreateMalloc - Generate the IR for a call to malloc:
430 /// 1. Compute the malloc call's argument as the specified type's size,
431 /// possibly multiplied by the array size if the array size is not
433 /// 2. Call malloc with that argument.
434 /// 3. Bitcast the result of the malloc call to the specified type.
435 Instruction *CallInst::CreateMalloc(Instruction *InsertBefore,
436 Type *IntPtrTy, Type *AllocTy,
437 Value *AllocSize, Value *ArraySize,
440 return createMalloc(InsertBefore, nullptr, IntPtrTy, AllocTy, AllocSize,
441 ArraySize, MallocF, Name);
444 /// CreateMalloc - Generate the IR for a call to malloc:
445 /// 1. Compute the malloc call's argument as the specified type's size,
446 /// possibly multiplied by the array size if the array size is not
448 /// 2. Call malloc with that argument.
449 /// 3. Bitcast the result of the malloc call to the specified type.
450 /// Note: This function does not add the bitcast to the basic block, that is the
451 /// responsibility of the caller.
452 Instruction *CallInst::CreateMalloc(BasicBlock *InsertAtEnd,
453 Type *IntPtrTy, Type *AllocTy,
454 Value *AllocSize, Value *ArraySize,
455 Function *MallocF, const Twine &Name) {
456 return createMalloc(nullptr, InsertAtEnd, IntPtrTy, AllocTy, AllocSize,
457 ArraySize, MallocF, Name);
460 static Instruction* createFree(Value* Source, Instruction *InsertBefore,
461 BasicBlock *InsertAtEnd) {
462 assert(((!InsertBefore && InsertAtEnd) || (InsertBefore && !InsertAtEnd)) &&
463 "createFree needs either InsertBefore or InsertAtEnd");
464 assert(Source->getType()->isPointerTy() &&
465 "Can not free something of nonpointer type!");
467 BasicBlock* BB = InsertBefore ? InsertBefore->getParent() : InsertAtEnd;
468 Module* M = BB->getParent()->getParent();
470 Type *VoidTy = Type::getVoidTy(M->getContext());
471 Type *IntPtrTy = Type::getInt8PtrTy(M->getContext());
472 // prototype free as "void free(void*)"
473 Value *FreeFunc = M->getOrInsertFunction("free", VoidTy, IntPtrTy, nullptr);
474 CallInst* Result = nullptr;
475 Value *PtrCast = Source;
477 if (Source->getType() != IntPtrTy)
478 PtrCast = new BitCastInst(Source, IntPtrTy, "", InsertBefore);
479 Result = CallInst::Create(FreeFunc, PtrCast, "", InsertBefore);
481 if (Source->getType() != IntPtrTy)
482 PtrCast = new BitCastInst(Source, IntPtrTy, "", InsertAtEnd);
483 Result = CallInst::Create(FreeFunc, PtrCast, "");
485 Result->setTailCall();
486 if (Function *F = dyn_cast<Function>(FreeFunc))
487 Result->setCallingConv(F->getCallingConv());
492 /// CreateFree - Generate the IR for a call to the builtin free function.
493 Instruction * CallInst::CreateFree(Value* Source, Instruction *InsertBefore) {
494 return createFree(Source, InsertBefore, nullptr);
497 /// CreateFree - Generate the IR for a call to the builtin free function.
498 /// Note: This function does not add the call to the basic block, that is the
499 /// responsibility of the caller.
500 Instruction* CallInst::CreateFree(Value* Source, BasicBlock *InsertAtEnd) {
501 Instruction* FreeCall = createFree(Source, nullptr, InsertAtEnd);
502 assert(FreeCall && "CreateFree did not create a CallInst");
506 //===----------------------------------------------------------------------===//
507 // InvokeInst Implementation
508 //===----------------------------------------------------------------------===//
510 void InvokeInst::init(FunctionType *FTy, Value *Fn, BasicBlock *IfNormal,
511 BasicBlock *IfException, ArrayRef<Value *> Args,
512 ArrayRef<OperandBundleDef> Bundles,
513 const Twine &NameStr) {
516 assert(getNumOperands() == 3 + Args.size() + CountBundleInputs(Bundles) &&
517 "NumOperands not set up?");
520 Op<-1>() = IfException;
523 assert(((Args.size() == FTy->getNumParams()) ||
524 (FTy->isVarArg() && Args.size() > FTy->getNumParams())) &&
525 "Invoking a function with bad signature");
527 for (unsigned i = 0, e = Args.size(); i != e; i++)
528 assert((i >= FTy->getNumParams() ||
529 FTy->getParamType(i) == Args[i]->getType()) &&
530 "Invoking a function with a bad signature!");
533 std::copy(Args.begin(), Args.end(), op_begin());
535 auto It = populateBundleOperandInfos(Bundles, Args.size());
537 assert(It + 3 == op_end() && "Should add up!");
542 InvokeInst::InvokeInst(const InvokeInst &II)
543 : TerminatorInst(II.getType(), Instruction::Invoke,
544 OperandTraits<InvokeInst>::op_end(this) -
546 II.getNumOperands()),
547 AttributeList(II.AttributeList), FTy(II.FTy) {
548 setCallingConv(II.getCallingConv());
549 std::copy(II.op_begin(), II.op_end(), op_begin());
550 std::copy(II.bundle_op_info_begin(), II.bundle_op_info_end(),
551 bundle_op_info_begin());
552 SubclassOptionalData = II.SubclassOptionalData;
555 BasicBlock *InvokeInst::getSuccessorV(unsigned idx) const {
556 return getSuccessor(idx);
558 unsigned InvokeInst::getNumSuccessorsV() const {
559 return getNumSuccessors();
561 void InvokeInst::setSuccessorV(unsigned idx, BasicBlock *B) {
562 return setSuccessor(idx, B);
565 bool InvokeInst::hasFnAttrImpl(Attribute::AttrKind A) const {
566 if (AttributeList.hasAttribute(AttributeSet::FunctionIndex, A))
569 // Operand bundles override attributes on the called function, but don't
570 // override attributes directly present on the invoke instruction.
571 if (isFnAttrDisallowedByOpBundle(A))
574 if (const Function *F = getCalledFunction())
575 return F->getAttributes().hasAttribute(AttributeSet::FunctionIndex, A);
579 bool InvokeInst::paramHasAttr(unsigned i, Attribute::AttrKind A) const {
580 assert(i < (getNumArgOperands() + 1) && "Param index out of bounds!");
582 if (AttributeList.hasAttribute(i, A))
584 if (const Function *F = getCalledFunction())
585 return F->getAttributes().hasAttribute(i, A);
589 void InvokeInst::addAttribute(unsigned i, Attribute::AttrKind attr) {
590 AttributeSet PAL = getAttributes();
591 PAL = PAL.addAttribute(getContext(), i, attr);
595 void InvokeInst::removeAttribute(unsigned i, Attribute attr) {
596 AttributeSet PAL = getAttributes();
598 PAL = PAL.removeAttributes(getContext(), i,
599 AttributeSet::get(getContext(), i, B));
603 void InvokeInst::addDereferenceableAttr(unsigned i, uint64_t Bytes) {
604 AttributeSet PAL = getAttributes();
605 PAL = PAL.addDereferenceableAttr(getContext(), i, Bytes);
609 void InvokeInst::addDereferenceableOrNullAttr(unsigned i, uint64_t Bytes) {
610 AttributeSet PAL = getAttributes();
611 PAL = PAL.addDereferenceableOrNullAttr(getContext(), i, Bytes);
615 LandingPadInst *InvokeInst::getLandingPadInst() const {
616 return cast<LandingPadInst>(getUnwindDest()->getFirstNonPHI());
619 //===----------------------------------------------------------------------===//
620 // ReturnInst Implementation
621 //===----------------------------------------------------------------------===//
623 ReturnInst::ReturnInst(const ReturnInst &RI)
624 : TerminatorInst(Type::getVoidTy(RI.getContext()), Instruction::Ret,
625 OperandTraits<ReturnInst>::op_end(this) -
627 RI.getNumOperands()) {
628 if (RI.getNumOperands())
629 Op<0>() = RI.Op<0>();
630 SubclassOptionalData = RI.SubclassOptionalData;
633 ReturnInst::ReturnInst(LLVMContext &C, Value *retVal, Instruction *InsertBefore)
634 : TerminatorInst(Type::getVoidTy(C), Instruction::Ret,
635 OperandTraits<ReturnInst>::op_end(this) - !!retVal, !!retVal,
640 ReturnInst::ReturnInst(LLVMContext &C, Value *retVal, BasicBlock *InsertAtEnd)
641 : TerminatorInst(Type::getVoidTy(C), Instruction::Ret,
642 OperandTraits<ReturnInst>::op_end(this) - !!retVal, !!retVal,
647 ReturnInst::ReturnInst(LLVMContext &Context, BasicBlock *InsertAtEnd)
648 : TerminatorInst(Type::getVoidTy(Context), Instruction::Ret,
649 OperandTraits<ReturnInst>::op_end(this), 0, InsertAtEnd) {
652 unsigned ReturnInst::getNumSuccessorsV() const {
653 return getNumSuccessors();
656 /// Out-of-line ReturnInst method, put here so the C++ compiler can choose to
657 /// emit the vtable for the class in this translation unit.
658 void ReturnInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) {
659 llvm_unreachable("ReturnInst has no successors!");
662 BasicBlock *ReturnInst::getSuccessorV(unsigned idx) const {
663 llvm_unreachable("ReturnInst has no successors!");
666 ReturnInst::~ReturnInst() {
669 //===----------------------------------------------------------------------===//
670 // ResumeInst Implementation
671 //===----------------------------------------------------------------------===//
673 ResumeInst::ResumeInst(const ResumeInst &RI)
674 : TerminatorInst(Type::getVoidTy(RI.getContext()), Instruction::Resume,
675 OperandTraits<ResumeInst>::op_begin(this), 1) {
676 Op<0>() = RI.Op<0>();
679 ResumeInst::ResumeInst(Value *Exn, Instruction *InsertBefore)
680 : TerminatorInst(Type::getVoidTy(Exn->getContext()), Instruction::Resume,
681 OperandTraits<ResumeInst>::op_begin(this), 1, InsertBefore) {
685 ResumeInst::ResumeInst(Value *Exn, BasicBlock *InsertAtEnd)
686 : TerminatorInst(Type::getVoidTy(Exn->getContext()), Instruction::Resume,
687 OperandTraits<ResumeInst>::op_begin(this), 1, InsertAtEnd) {
691 unsigned ResumeInst::getNumSuccessorsV() const {
692 return getNumSuccessors();
695 void ResumeInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) {
696 llvm_unreachable("ResumeInst has no successors!");
699 BasicBlock *ResumeInst::getSuccessorV(unsigned idx) const {
700 llvm_unreachable("ResumeInst has no successors!");
703 //===----------------------------------------------------------------------===//
704 // CleanupEndPadInst Implementation
705 //===----------------------------------------------------------------------===//
707 CleanupEndPadInst::CleanupEndPadInst(const CleanupEndPadInst &CEPI)
708 : TerminatorInst(CEPI.getType(), Instruction::CleanupEndPad,
709 OperandTraits<CleanupEndPadInst>::op_end(this) -
710 CEPI.getNumOperands(),
711 CEPI.getNumOperands()) {
712 setInstructionSubclassData(CEPI.getSubclassDataFromInstruction());
713 setCleanupPad(CEPI.getCleanupPad());
714 if (BasicBlock *UnwindDest = CEPI.getUnwindDest())
715 setUnwindDest(UnwindDest);
718 void CleanupEndPadInst::init(CleanupPadInst *CleanupPad, BasicBlock *UnwindBB) {
719 setCleanupPad(CleanupPad);
721 setInstructionSubclassData(getSubclassDataFromInstruction() | 1);
722 setUnwindDest(UnwindBB);
726 CleanupEndPadInst::CleanupEndPadInst(CleanupPadInst *CleanupPad,
727 BasicBlock *UnwindBB, unsigned Values,
728 Instruction *InsertBefore)
729 : TerminatorInst(Type::getVoidTy(CleanupPad->getContext()),
730 Instruction::CleanupEndPad,
731 OperandTraits<CleanupEndPadInst>::op_end(this) - Values,
732 Values, InsertBefore) {
733 init(CleanupPad, UnwindBB);
736 CleanupEndPadInst::CleanupEndPadInst(CleanupPadInst *CleanupPad,
737 BasicBlock *UnwindBB, unsigned Values,
738 BasicBlock *InsertAtEnd)
739 : TerminatorInst(Type::getVoidTy(CleanupPad->getContext()),
740 Instruction::CleanupEndPad,
741 OperandTraits<CleanupEndPadInst>::op_end(this) - Values,
742 Values, InsertAtEnd) {
743 init(CleanupPad, UnwindBB);
746 BasicBlock *CleanupEndPadInst::getSuccessorV(unsigned Idx) const {
748 return getUnwindDest();
750 unsigned CleanupEndPadInst::getNumSuccessorsV() const {
751 return getNumSuccessors();
753 void CleanupEndPadInst::setSuccessorV(unsigned Idx, BasicBlock *B) {
758 //===----------------------------------------------------------------------===//
759 // CleanupReturnInst Implementation
760 //===----------------------------------------------------------------------===//
762 CleanupReturnInst::CleanupReturnInst(const CleanupReturnInst &CRI)
763 : TerminatorInst(CRI.getType(), Instruction::CleanupRet,
764 OperandTraits<CleanupReturnInst>::op_end(this) -
765 CRI.getNumOperands(),
766 CRI.getNumOperands()) {
767 setInstructionSubclassData(CRI.getSubclassDataFromInstruction());
768 Op<-1>() = CRI.Op<-1>();
769 if (CRI.hasUnwindDest())
770 Op<-2>() = CRI.Op<-2>();
773 void CleanupReturnInst::init(CleanupPadInst *CleanupPad, BasicBlock *UnwindBB) {
775 setInstructionSubclassData(getSubclassDataFromInstruction() | 1);
777 Op<-1>() = CleanupPad;
782 CleanupReturnInst::CleanupReturnInst(CleanupPadInst *CleanupPad,
783 BasicBlock *UnwindBB, unsigned Values,
784 Instruction *InsertBefore)
785 : TerminatorInst(Type::getVoidTy(CleanupPad->getContext()),
786 Instruction::CleanupRet,
787 OperandTraits<CleanupReturnInst>::op_end(this) - Values,
788 Values, InsertBefore) {
789 init(CleanupPad, UnwindBB);
792 CleanupReturnInst::CleanupReturnInst(CleanupPadInst *CleanupPad,
793 BasicBlock *UnwindBB, unsigned Values,
794 BasicBlock *InsertAtEnd)
795 : TerminatorInst(Type::getVoidTy(CleanupPad->getContext()),
796 Instruction::CleanupRet,
797 OperandTraits<CleanupReturnInst>::op_end(this) - Values,
798 Values, InsertAtEnd) {
799 init(CleanupPad, UnwindBB);
802 BasicBlock *CleanupReturnInst::getSuccessorV(unsigned Idx) const {
804 return getUnwindDest();
806 unsigned CleanupReturnInst::getNumSuccessorsV() const {
807 return getNumSuccessors();
809 void CleanupReturnInst::setSuccessorV(unsigned Idx, BasicBlock *B) {
814 //===----------------------------------------------------------------------===//
815 // CatchEndPadInst Implementation
816 //===----------------------------------------------------------------------===//
818 CatchEndPadInst::CatchEndPadInst(const CatchEndPadInst &CRI)
819 : TerminatorInst(CRI.getType(), Instruction::CatchEndPad,
820 OperandTraits<CatchEndPadInst>::op_end(this) -
821 CRI.getNumOperands(),
822 CRI.getNumOperands()) {
823 setInstructionSubclassData(CRI.getSubclassDataFromInstruction());
824 if (BasicBlock *UnwindDest = CRI.getUnwindDest())
825 setUnwindDest(UnwindDest);
828 void CatchEndPadInst::init(BasicBlock *UnwindBB) {
830 setInstructionSubclassData(getSubclassDataFromInstruction() | 1);
831 setUnwindDest(UnwindBB);
835 CatchEndPadInst::CatchEndPadInst(LLVMContext &C, BasicBlock *UnwindBB,
836 unsigned Values, Instruction *InsertBefore)
837 : TerminatorInst(Type::getVoidTy(C), Instruction::CatchEndPad,
838 OperandTraits<CatchEndPadInst>::op_end(this) - Values,
839 Values, InsertBefore) {
843 CatchEndPadInst::CatchEndPadInst(LLVMContext &C, BasicBlock *UnwindBB,
844 unsigned Values, BasicBlock *InsertAtEnd)
845 : TerminatorInst(Type::getVoidTy(C), Instruction::CatchEndPad,
846 OperandTraits<CatchEndPadInst>::op_end(this) - Values,
847 Values, InsertAtEnd) {
851 BasicBlock *CatchEndPadInst::getSuccessorV(unsigned Idx) const {
853 return getUnwindDest();
855 unsigned CatchEndPadInst::getNumSuccessorsV() const {
856 return getNumSuccessors();
858 void CatchEndPadInst::setSuccessorV(unsigned Idx, BasicBlock *B) {
863 //===----------------------------------------------------------------------===//
864 // CatchReturnInst Implementation
865 //===----------------------------------------------------------------------===//
866 void CatchReturnInst::init(CatchPadInst *CatchPad, BasicBlock *BB) {
871 CatchReturnInst::CatchReturnInst(const CatchReturnInst &CRI)
872 : TerminatorInst(Type::getVoidTy(CRI.getContext()), Instruction::CatchRet,
873 OperandTraits<CatchReturnInst>::op_begin(this), 2) {
874 Op<0>() = CRI.Op<0>();
875 Op<1>() = CRI.Op<1>();
878 CatchReturnInst::CatchReturnInst(CatchPadInst *CatchPad, BasicBlock *BB,
879 Instruction *InsertBefore)
880 : TerminatorInst(Type::getVoidTy(BB->getContext()), Instruction::CatchRet,
881 OperandTraits<CatchReturnInst>::op_begin(this), 2,
886 CatchReturnInst::CatchReturnInst(CatchPadInst *CatchPad, BasicBlock *BB,
887 BasicBlock *InsertAtEnd)
888 : TerminatorInst(Type::getVoidTy(BB->getContext()), Instruction::CatchRet,
889 OperandTraits<CatchReturnInst>::op_begin(this), 2,
894 BasicBlock *CatchReturnInst::getSuccessorV(unsigned Idx) const {
895 assert(Idx < getNumSuccessors() && "Successor # out of range for catchret!");
896 return getSuccessor();
898 unsigned CatchReturnInst::getNumSuccessorsV() const {
899 return getNumSuccessors();
901 void CatchReturnInst::setSuccessorV(unsigned Idx, BasicBlock *B) {
902 assert(Idx < getNumSuccessors() && "Successor # out of range for catchret!");
906 //===----------------------------------------------------------------------===//
907 // CatchPadInst Implementation
908 //===----------------------------------------------------------------------===//
909 void CatchPadInst::init(BasicBlock *IfNormal, BasicBlock *IfException,
910 ArrayRef<Value *> Args, const Twine &NameStr) {
911 assert(getNumOperands() == 2 + Args.size() && "NumOperands not set up?");
913 Op<-1>() = IfException;
914 std::copy(Args.begin(), Args.end(), op_begin());
918 CatchPadInst::CatchPadInst(const CatchPadInst &CPI)
919 : TerminatorInst(CPI.getType(), Instruction::CatchPad,
920 OperandTraits<CatchPadInst>::op_end(this) -
921 CPI.getNumOperands(),
922 CPI.getNumOperands()) {
923 std::copy(CPI.op_begin(), CPI.op_end(), op_begin());
926 CatchPadInst::CatchPadInst(BasicBlock *IfNormal, BasicBlock *IfException,
927 ArrayRef<Value *> Args, unsigned Values,
928 const Twine &NameStr, Instruction *InsertBefore)
929 : TerminatorInst(Type::getTokenTy(IfNormal->getContext()),
930 Instruction::CatchPad,
931 OperandTraits<CatchPadInst>::op_end(this) - Values, Values,
933 init(IfNormal, IfException, Args, NameStr);
936 CatchPadInst::CatchPadInst(BasicBlock *IfNormal, BasicBlock *IfException,
937 ArrayRef<Value *> Args, unsigned Values,
938 const Twine &NameStr, BasicBlock *InsertAtEnd)
939 : TerminatorInst(Type::getTokenTy(IfNormal->getContext()),
940 Instruction::CatchPad,
941 OperandTraits<CatchPadInst>::op_end(this) - Values, Values,
943 init(IfNormal, IfException, Args, NameStr);
946 BasicBlock *CatchPadInst::getSuccessorV(unsigned Idx) const {
947 return getSuccessor(Idx);
949 unsigned CatchPadInst::getNumSuccessorsV() const {
950 return getNumSuccessors();
952 void CatchPadInst::setSuccessorV(unsigned Idx, BasicBlock *B) {
953 return setSuccessor(Idx, B);
956 //===----------------------------------------------------------------------===//
957 // TerminatePadInst Implementation
958 //===----------------------------------------------------------------------===//
959 void TerminatePadInst::init(BasicBlock *BB, ArrayRef<Value *> Args) {
961 setInstructionSubclassData(getSubclassDataFromInstruction() | 1);
964 std::copy(Args.begin(), Args.end(), op_begin());
967 TerminatePadInst::TerminatePadInst(const TerminatePadInst &TPI)
968 : TerminatorInst(TPI.getType(), Instruction::TerminatePad,
969 OperandTraits<TerminatePadInst>::op_end(this) -
970 TPI.getNumOperands(),
971 TPI.getNumOperands()) {
972 setInstructionSubclassData(TPI.getSubclassDataFromInstruction());
973 std::copy(TPI.op_begin(), TPI.op_end(), op_begin());
976 TerminatePadInst::TerminatePadInst(LLVMContext &C, BasicBlock *BB,
977 ArrayRef<Value *> Args, unsigned Values,
978 Instruction *InsertBefore)
979 : TerminatorInst(Type::getVoidTy(C), Instruction::TerminatePad,
980 OperandTraits<TerminatePadInst>::op_end(this) - Values,
981 Values, InsertBefore) {
985 TerminatePadInst::TerminatePadInst(LLVMContext &C, BasicBlock *BB,
986 ArrayRef<Value *> Args, unsigned Values,
987 BasicBlock *InsertAtEnd)
988 : TerminatorInst(Type::getVoidTy(C), Instruction::TerminatePad,
989 OperandTraits<TerminatePadInst>::op_end(this) - Values,
990 Values, InsertAtEnd) {
994 BasicBlock *TerminatePadInst::getSuccessorV(unsigned Idx) const {
996 return getUnwindDest();
998 unsigned TerminatePadInst::getNumSuccessorsV() const {
999 return getNumSuccessors();
1001 void TerminatePadInst::setSuccessorV(unsigned Idx, BasicBlock *B) {
1003 return setUnwindDest(B);
1006 //===----------------------------------------------------------------------===//
1007 // CleanupPadInst Implementation
1008 //===----------------------------------------------------------------------===//
1009 void CleanupPadInst::init(ArrayRef<Value *> Args, const Twine &NameStr) {
1010 assert(getNumOperands() == Args.size() && "NumOperands not set up?");
1011 std::copy(Args.begin(), Args.end(), op_begin());
1015 CleanupPadInst::CleanupPadInst(const CleanupPadInst &CPI)
1016 : Instruction(CPI.getType(), Instruction::CleanupPad,
1017 OperandTraits<CleanupPadInst>::op_end(this) -
1018 CPI.getNumOperands(),
1019 CPI.getNumOperands()) {
1020 std::copy(CPI.op_begin(), CPI.op_end(), op_begin());
1023 CleanupPadInst::CleanupPadInst(LLVMContext &C, ArrayRef<Value *> Args,
1024 const Twine &NameStr, Instruction *InsertBefore)
1025 : Instruction(Type::getTokenTy(C), Instruction::CleanupPad,
1026 OperandTraits<CleanupPadInst>::op_end(this) - Args.size(),
1027 Args.size(), InsertBefore) {
1028 init(Args, NameStr);
1031 CleanupPadInst::CleanupPadInst(LLVMContext &C, ArrayRef<Value *> Args,
1032 const Twine &NameStr, BasicBlock *InsertAtEnd)
1033 : Instruction(Type::getTokenTy(C), Instruction::CleanupPad,
1034 OperandTraits<CleanupPadInst>::op_end(this) - Args.size(),
1035 Args.size(), InsertAtEnd) {
1036 init(Args, NameStr);
1039 //===----------------------------------------------------------------------===//
1040 // UnreachableInst Implementation
1041 //===----------------------------------------------------------------------===//
1043 UnreachableInst::UnreachableInst(LLVMContext &Context,
1044 Instruction *InsertBefore)
1045 : TerminatorInst(Type::getVoidTy(Context), Instruction::Unreachable,
1046 nullptr, 0, InsertBefore) {
1048 UnreachableInst::UnreachableInst(LLVMContext &Context, BasicBlock *InsertAtEnd)
1049 : TerminatorInst(Type::getVoidTy(Context), Instruction::Unreachable,
1050 nullptr, 0, InsertAtEnd) {
1053 unsigned UnreachableInst::getNumSuccessorsV() const {
1054 return getNumSuccessors();
1057 void UnreachableInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) {
1058 llvm_unreachable("UnreachableInst has no successors!");
1061 BasicBlock *UnreachableInst::getSuccessorV(unsigned idx) const {
1062 llvm_unreachable("UnreachableInst has no successors!");
1065 //===----------------------------------------------------------------------===//
1066 // BranchInst Implementation
1067 //===----------------------------------------------------------------------===//
1069 void BranchInst::AssertOK() {
1070 if (isConditional())
1071 assert(getCondition()->getType()->isIntegerTy(1) &&
1072 "May only branch on boolean predicates!");
1075 BranchInst::BranchInst(BasicBlock *IfTrue, Instruction *InsertBefore)
1076 : TerminatorInst(Type::getVoidTy(IfTrue->getContext()), Instruction::Br,
1077 OperandTraits<BranchInst>::op_end(this) - 1,
1079 assert(IfTrue && "Branch destination may not be null!");
1082 BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
1083 Instruction *InsertBefore)
1084 : TerminatorInst(Type::getVoidTy(IfTrue->getContext()), Instruction::Br,
1085 OperandTraits<BranchInst>::op_end(this) - 3,
1095 BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd)
1096 : TerminatorInst(Type::getVoidTy(IfTrue->getContext()), Instruction::Br,
1097 OperandTraits<BranchInst>::op_end(this) - 1,
1099 assert(IfTrue && "Branch destination may not be null!");
1103 BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
1104 BasicBlock *InsertAtEnd)
1105 : TerminatorInst(Type::getVoidTy(IfTrue->getContext()), Instruction::Br,
1106 OperandTraits<BranchInst>::op_end(this) - 3,
1117 BranchInst::BranchInst(const BranchInst &BI) :
1118 TerminatorInst(Type::getVoidTy(BI.getContext()), Instruction::Br,
1119 OperandTraits<BranchInst>::op_end(this) - BI.getNumOperands(),
1120 BI.getNumOperands()) {
1121 Op<-1>() = BI.Op<-1>();
1122 if (BI.getNumOperands() != 1) {
1123 assert(BI.getNumOperands() == 3 && "BR can have 1 or 3 operands!");
1124 Op<-3>() = BI.Op<-3>();
1125 Op<-2>() = BI.Op<-2>();
1127 SubclassOptionalData = BI.SubclassOptionalData;
1130 void BranchInst::swapSuccessors() {
1131 assert(isConditional() &&
1132 "Cannot swap successors of an unconditional branch");
1133 Op<-1>().swap(Op<-2>());
1135 // Update profile metadata if present and it matches our structural
1137 MDNode *ProfileData = getMetadata(LLVMContext::MD_prof);
1138 if (!ProfileData || ProfileData->getNumOperands() != 3)
1141 // The first operand is the name. Fetch them backwards and build a new one.
1142 Metadata *Ops[] = {ProfileData->getOperand(0), ProfileData->getOperand(2),
1143 ProfileData->getOperand(1)};
1144 setMetadata(LLVMContext::MD_prof,
1145 MDNode::get(ProfileData->getContext(), Ops));
1148 BasicBlock *BranchInst::getSuccessorV(unsigned idx) const {
1149 return getSuccessor(idx);
1151 unsigned BranchInst::getNumSuccessorsV() const {
1152 return getNumSuccessors();
1154 void BranchInst::setSuccessorV(unsigned idx, BasicBlock *B) {
1155 setSuccessor(idx, B);
1159 //===----------------------------------------------------------------------===//
1160 // AllocaInst Implementation
1161 //===----------------------------------------------------------------------===//
1163 static Value *getAISize(LLVMContext &Context, Value *Amt) {
1165 Amt = ConstantInt::get(Type::getInt32Ty(Context), 1);
1167 assert(!isa<BasicBlock>(Amt) &&
1168 "Passed basic block into allocation size parameter! Use other ctor");
1169 assert(Amt->getType()->isIntegerTy() &&
1170 "Allocation array size is not an integer!");
1175 AllocaInst::AllocaInst(Type *Ty, const Twine &Name, Instruction *InsertBefore)
1176 : AllocaInst(Ty, /*ArraySize=*/nullptr, Name, InsertBefore) {}
1178 AllocaInst::AllocaInst(Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd)
1179 : AllocaInst(Ty, /*ArraySize=*/nullptr, Name, InsertAtEnd) {}
1181 AllocaInst::AllocaInst(Type *Ty, Value *ArraySize, const Twine &Name,
1182 Instruction *InsertBefore)
1183 : AllocaInst(Ty, ArraySize, /*Align=*/0, Name, InsertBefore) {}
1185 AllocaInst::AllocaInst(Type *Ty, Value *ArraySize, const Twine &Name,
1186 BasicBlock *InsertAtEnd)
1187 : AllocaInst(Ty, ArraySize, /*Align=*/0, Name, InsertAtEnd) {}
1189 AllocaInst::AllocaInst(Type *Ty, Value *ArraySize, unsigned Align,
1190 const Twine &Name, Instruction *InsertBefore)
1191 : UnaryInstruction(PointerType::getUnqual(Ty), Alloca,
1192 getAISize(Ty->getContext(), ArraySize), InsertBefore),
1194 setAlignment(Align);
1195 assert(!Ty->isVoidTy() && "Cannot allocate void!");
1199 AllocaInst::AllocaInst(Type *Ty, Value *ArraySize, unsigned Align,
1200 const Twine &Name, BasicBlock *InsertAtEnd)
1201 : UnaryInstruction(PointerType::getUnqual(Ty), Alloca,
1202 getAISize(Ty->getContext(), ArraySize), InsertAtEnd),
1204 setAlignment(Align);
1205 assert(!Ty->isVoidTy() && "Cannot allocate void!");
1209 // Out of line virtual method, so the vtable, etc has a home.
1210 AllocaInst::~AllocaInst() {
1213 void AllocaInst::setAlignment(unsigned Align) {
1214 assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
1215 assert(Align <= MaximumAlignment &&
1216 "Alignment is greater than MaximumAlignment!");
1217 setInstructionSubclassData((getSubclassDataFromInstruction() & ~31) |
1218 (Log2_32(Align) + 1));
1219 assert(getAlignment() == Align && "Alignment representation error!");
1222 bool AllocaInst::isArrayAllocation() const {
1223 if (ConstantInt *CI = dyn_cast<ConstantInt>(getOperand(0)))
1224 return !CI->isOne();
1228 /// isStaticAlloca - Return true if this alloca is in the entry block of the
1229 /// function and is a constant size. If so, the code generator will fold it
1230 /// into the prolog/epilog code, so it is basically free.
1231 bool AllocaInst::isStaticAlloca() const {
1232 // Must be constant size.
1233 if (!isa<ConstantInt>(getArraySize())) return false;
1235 // Must be in the entry block.
1236 const BasicBlock *Parent = getParent();
1237 return Parent == &Parent->getParent()->front() && !isUsedWithInAlloca();
1240 //===----------------------------------------------------------------------===//
1241 // LoadInst Implementation
1242 //===----------------------------------------------------------------------===//
1244 void LoadInst::AssertOK() {
1245 assert(getOperand(0)->getType()->isPointerTy() &&
1246 "Ptr must have pointer type.");
1247 assert(!(isAtomic() && getAlignment() == 0) &&
1248 "Alignment required for atomic load");
1251 LoadInst::LoadInst(Value *Ptr, const Twine &Name, Instruction *InsertBef)
1252 : LoadInst(Ptr, Name, /*isVolatile=*/false, InsertBef) {}
1254 LoadInst::LoadInst(Value *Ptr, const Twine &Name, BasicBlock *InsertAE)
1255 : LoadInst(Ptr, Name, /*isVolatile=*/false, InsertAE) {}
1257 LoadInst::LoadInst(Type *Ty, Value *Ptr, const Twine &Name, bool isVolatile,
1258 Instruction *InsertBef)
1259 : LoadInst(Ty, Ptr, Name, isVolatile, /*Align=*/0, InsertBef) {}
1261 LoadInst::LoadInst(Value *Ptr, const Twine &Name, bool isVolatile,
1262 BasicBlock *InsertAE)
1263 : LoadInst(Ptr, Name, isVolatile, /*Align=*/0, InsertAE) {}
1265 LoadInst::LoadInst(Type *Ty, Value *Ptr, const Twine &Name, bool isVolatile,
1266 unsigned Align, Instruction *InsertBef)
1267 : LoadInst(Ty, Ptr, Name, isVolatile, Align, NotAtomic, CrossThread,
1270 LoadInst::LoadInst(Value *Ptr, const Twine &Name, bool isVolatile,
1271 unsigned Align, BasicBlock *InsertAE)
1272 : LoadInst(Ptr, Name, isVolatile, Align, NotAtomic, CrossThread, InsertAE) {
1275 LoadInst::LoadInst(Type *Ty, Value *Ptr, const Twine &Name, bool isVolatile,
1276 unsigned Align, AtomicOrdering Order,
1277 SynchronizationScope SynchScope, Instruction *InsertBef)
1278 : UnaryInstruction(Ty, Load, Ptr, InsertBef) {
1279 assert(Ty == cast<PointerType>(Ptr->getType())->getElementType());
1280 setVolatile(isVolatile);
1281 setAlignment(Align);
1282 setAtomic(Order, SynchScope);
1287 LoadInst::LoadInst(Value *Ptr, const Twine &Name, bool isVolatile,
1288 unsigned Align, AtomicOrdering Order,
1289 SynchronizationScope SynchScope,
1290 BasicBlock *InsertAE)
1291 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
1292 Load, Ptr, InsertAE) {
1293 setVolatile(isVolatile);
1294 setAlignment(Align);
1295 setAtomic(Order, SynchScope);
1300 LoadInst::LoadInst(Value *Ptr, const char *Name, Instruction *InsertBef)
1301 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
1302 Load, Ptr, InsertBef) {
1305 setAtomic(NotAtomic);
1307 if (Name && Name[0]) setName(Name);
1310 LoadInst::LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAE)
1311 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
1312 Load, Ptr, InsertAE) {
1315 setAtomic(NotAtomic);
1317 if (Name && Name[0]) setName(Name);
1320 LoadInst::LoadInst(Type *Ty, Value *Ptr, const char *Name, bool isVolatile,
1321 Instruction *InsertBef)
1322 : UnaryInstruction(Ty, Load, Ptr, InsertBef) {
1323 assert(Ty == cast<PointerType>(Ptr->getType())->getElementType());
1324 setVolatile(isVolatile);
1326 setAtomic(NotAtomic);
1328 if (Name && Name[0]) setName(Name);
1331 LoadInst::LoadInst(Value *Ptr, const char *Name, bool isVolatile,
1332 BasicBlock *InsertAE)
1333 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
1334 Load, Ptr, InsertAE) {
1335 setVolatile(isVolatile);
1337 setAtomic(NotAtomic);
1339 if (Name && Name[0]) setName(Name);
1342 void LoadInst::setAlignment(unsigned Align) {
1343 assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
1344 assert(Align <= MaximumAlignment &&
1345 "Alignment is greater than MaximumAlignment!");
1346 setInstructionSubclassData((getSubclassDataFromInstruction() & ~(31 << 1)) |
1347 ((Log2_32(Align)+1)<<1));
1348 assert(getAlignment() == Align && "Alignment representation error!");
1351 //===----------------------------------------------------------------------===//
1352 // StoreInst Implementation
1353 //===----------------------------------------------------------------------===//
1355 void StoreInst::AssertOK() {
1356 assert(getOperand(0) && getOperand(1) && "Both operands must be non-null!");
1357 assert(getOperand(1)->getType()->isPointerTy() &&
1358 "Ptr must have pointer type!");
1359 assert(getOperand(0)->getType() ==
1360 cast<PointerType>(getOperand(1)->getType())->getElementType()
1361 && "Ptr must be a pointer to Val type!");
1362 assert(!(isAtomic() && getAlignment() == 0) &&
1363 "Alignment required for atomic store");
1366 StoreInst::StoreInst(Value *val, Value *addr, Instruction *InsertBefore)
1367 : StoreInst(val, addr, /*isVolatile=*/false, InsertBefore) {}
1369 StoreInst::StoreInst(Value *val, Value *addr, BasicBlock *InsertAtEnd)
1370 : StoreInst(val, addr, /*isVolatile=*/false, InsertAtEnd) {}
1372 StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
1373 Instruction *InsertBefore)
1374 : StoreInst(val, addr, isVolatile, /*Align=*/0, InsertBefore) {}
1376 StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
1377 BasicBlock *InsertAtEnd)
1378 : StoreInst(val, addr, isVolatile, /*Align=*/0, InsertAtEnd) {}
1380 StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile, unsigned Align,
1381 Instruction *InsertBefore)
1382 : StoreInst(val, addr, isVolatile, Align, NotAtomic, CrossThread,
1385 StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile, unsigned Align,
1386 BasicBlock *InsertAtEnd)
1387 : StoreInst(val, addr, isVolatile, Align, NotAtomic, CrossThread,
1390 StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
1391 unsigned Align, AtomicOrdering Order,
1392 SynchronizationScope SynchScope,
1393 Instruction *InsertBefore)
1394 : Instruction(Type::getVoidTy(val->getContext()), Store,
1395 OperandTraits<StoreInst>::op_begin(this),
1396 OperandTraits<StoreInst>::operands(this),
1400 setVolatile(isVolatile);
1401 setAlignment(Align);
1402 setAtomic(Order, SynchScope);
1406 StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
1407 unsigned Align, AtomicOrdering Order,
1408 SynchronizationScope SynchScope,
1409 BasicBlock *InsertAtEnd)
1410 : Instruction(Type::getVoidTy(val->getContext()), Store,
1411 OperandTraits<StoreInst>::op_begin(this),
1412 OperandTraits<StoreInst>::operands(this),
1416 setVolatile(isVolatile);
1417 setAlignment(Align);
1418 setAtomic(Order, SynchScope);
1422 void StoreInst::setAlignment(unsigned Align) {
1423 assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
1424 assert(Align <= MaximumAlignment &&
1425 "Alignment is greater than MaximumAlignment!");
1426 setInstructionSubclassData((getSubclassDataFromInstruction() & ~(31 << 1)) |
1427 ((Log2_32(Align)+1) << 1));
1428 assert(getAlignment() == Align && "Alignment representation error!");
1431 //===----------------------------------------------------------------------===//
1432 // AtomicCmpXchgInst Implementation
1433 //===----------------------------------------------------------------------===//
1435 void AtomicCmpXchgInst::Init(Value *Ptr, Value *Cmp, Value *NewVal,
1436 AtomicOrdering SuccessOrdering,
1437 AtomicOrdering FailureOrdering,
1438 SynchronizationScope SynchScope) {
1442 setSuccessOrdering(SuccessOrdering);
1443 setFailureOrdering(FailureOrdering);
1444 setSynchScope(SynchScope);
1446 assert(getOperand(0) && getOperand(1) && getOperand(2) &&
1447 "All operands must be non-null!");
1448 assert(getOperand(0)->getType()->isPointerTy() &&
1449 "Ptr must have pointer type!");
1450 assert(getOperand(1)->getType() ==
1451 cast<PointerType>(getOperand(0)->getType())->getElementType()
1452 && "Ptr must be a pointer to Cmp type!");
1453 assert(getOperand(2)->getType() ==
1454 cast<PointerType>(getOperand(0)->getType())->getElementType()
1455 && "Ptr must be a pointer to NewVal type!");
1456 assert(SuccessOrdering != NotAtomic &&
1457 "AtomicCmpXchg instructions must be atomic!");
1458 assert(FailureOrdering != NotAtomic &&
1459 "AtomicCmpXchg instructions must be atomic!");
1460 assert(SuccessOrdering >= FailureOrdering &&
1461 "AtomicCmpXchg success ordering must be at least as strong as fail");
1462 assert(FailureOrdering != Release && FailureOrdering != AcquireRelease &&
1463 "AtomicCmpXchg failure ordering cannot include release semantics");
1466 AtomicCmpXchgInst::AtomicCmpXchgInst(Value *Ptr, Value *Cmp, Value *NewVal,
1467 AtomicOrdering SuccessOrdering,
1468 AtomicOrdering FailureOrdering,
1469 SynchronizationScope SynchScope,
1470 Instruction *InsertBefore)
1472 StructType::get(Cmp->getType(), Type::getInt1Ty(Cmp->getContext()),
1474 AtomicCmpXchg, OperandTraits<AtomicCmpXchgInst>::op_begin(this),
1475 OperandTraits<AtomicCmpXchgInst>::operands(this), InsertBefore) {
1476 Init(Ptr, Cmp, NewVal, SuccessOrdering, FailureOrdering, SynchScope);
1479 AtomicCmpXchgInst::AtomicCmpXchgInst(Value *Ptr, Value *Cmp, Value *NewVal,
1480 AtomicOrdering SuccessOrdering,
1481 AtomicOrdering FailureOrdering,
1482 SynchronizationScope SynchScope,
1483 BasicBlock *InsertAtEnd)
1485 StructType::get(Cmp->getType(), Type::getInt1Ty(Cmp->getContext()),
1487 AtomicCmpXchg, OperandTraits<AtomicCmpXchgInst>::op_begin(this),
1488 OperandTraits<AtomicCmpXchgInst>::operands(this), InsertAtEnd) {
1489 Init(Ptr, Cmp, NewVal, SuccessOrdering, FailureOrdering, SynchScope);
1492 //===----------------------------------------------------------------------===//
1493 // AtomicRMWInst Implementation
1494 //===----------------------------------------------------------------------===//
1496 void AtomicRMWInst::Init(BinOp Operation, Value *Ptr, Value *Val,
1497 AtomicOrdering Ordering,
1498 SynchronizationScope SynchScope) {
1501 setOperation(Operation);
1502 setOrdering(Ordering);
1503 setSynchScope(SynchScope);
1505 assert(getOperand(0) && getOperand(1) &&
1506 "All operands must be non-null!");
1507 assert(getOperand(0)->getType()->isPointerTy() &&
1508 "Ptr must have pointer type!");
1509 assert(getOperand(1)->getType() ==
1510 cast<PointerType>(getOperand(0)->getType())->getElementType()
1511 && "Ptr must be a pointer to Val type!");
1512 assert(Ordering != NotAtomic &&
1513 "AtomicRMW instructions must be atomic!");
1516 AtomicRMWInst::AtomicRMWInst(BinOp Operation, Value *Ptr, Value *Val,
1517 AtomicOrdering Ordering,
1518 SynchronizationScope SynchScope,
1519 Instruction *InsertBefore)
1520 : Instruction(Val->getType(), AtomicRMW,
1521 OperandTraits<AtomicRMWInst>::op_begin(this),
1522 OperandTraits<AtomicRMWInst>::operands(this),
1524 Init(Operation, Ptr, Val, Ordering, SynchScope);
1527 AtomicRMWInst::AtomicRMWInst(BinOp Operation, Value *Ptr, Value *Val,
1528 AtomicOrdering Ordering,
1529 SynchronizationScope SynchScope,
1530 BasicBlock *InsertAtEnd)
1531 : Instruction(Val->getType(), AtomicRMW,
1532 OperandTraits<AtomicRMWInst>::op_begin(this),
1533 OperandTraits<AtomicRMWInst>::operands(this),
1535 Init(Operation, Ptr, Val, Ordering, SynchScope);
1538 //===----------------------------------------------------------------------===//
1539 // FenceInst Implementation
1540 //===----------------------------------------------------------------------===//
1542 FenceInst::FenceInst(LLVMContext &C, AtomicOrdering Ordering,
1543 SynchronizationScope SynchScope,
1544 Instruction *InsertBefore)
1545 : Instruction(Type::getVoidTy(C), Fence, nullptr, 0, InsertBefore) {
1546 setOrdering(Ordering);
1547 setSynchScope(SynchScope);
1550 FenceInst::FenceInst(LLVMContext &C, AtomicOrdering Ordering,
1551 SynchronizationScope SynchScope,
1552 BasicBlock *InsertAtEnd)
1553 : Instruction(Type::getVoidTy(C), Fence, nullptr, 0, InsertAtEnd) {
1554 setOrdering(Ordering);
1555 setSynchScope(SynchScope);
1558 //===----------------------------------------------------------------------===//
1559 // GetElementPtrInst Implementation
1560 //===----------------------------------------------------------------------===//
1562 void GetElementPtrInst::init(Value *Ptr, ArrayRef<Value *> IdxList,
1563 const Twine &Name) {
1564 assert(getNumOperands() == 1 + IdxList.size() &&
1565 "NumOperands not initialized?");
1567 std::copy(IdxList.begin(), IdxList.end(), op_begin() + 1);
1571 GetElementPtrInst::GetElementPtrInst(const GetElementPtrInst &GEPI)
1572 : Instruction(GEPI.getType(), GetElementPtr,
1573 OperandTraits<GetElementPtrInst>::op_end(this) -
1574 GEPI.getNumOperands(),
1575 GEPI.getNumOperands()),
1576 SourceElementType(GEPI.SourceElementType),
1577 ResultElementType(GEPI.ResultElementType) {
1578 std::copy(GEPI.op_begin(), GEPI.op_end(), op_begin());
1579 SubclassOptionalData = GEPI.SubclassOptionalData;
1582 /// getIndexedType - Returns the type of the element that would be accessed with
1583 /// a gep instruction with the specified parameters.
1585 /// The Idxs pointer should point to a continuous piece of memory containing the
1586 /// indices, either as Value* or uint64_t.
1588 /// A null type is returned if the indices are invalid for the specified
1591 template <typename IndexTy>
1592 static Type *getIndexedTypeInternal(Type *Agg, ArrayRef<IndexTy> IdxList) {
1593 // Handle the special case of the empty set index set, which is always valid.
1594 if (IdxList.empty())
1597 // If there is at least one index, the top level type must be sized, otherwise
1598 // it cannot be 'stepped over'.
1599 if (!Agg->isSized())
1602 unsigned CurIdx = 1;
1603 for (; CurIdx != IdxList.size(); ++CurIdx) {
1604 CompositeType *CT = dyn_cast<CompositeType>(Agg);
1605 if (!CT || CT->isPointerTy()) return nullptr;
1606 IndexTy Index = IdxList[CurIdx];
1607 if (!CT->indexValid(Index)) return nullptr;
1608 Agg = CT->getTypeAtIndex(Index);
1610 return CurIdx == IdxList.size() ? Agg : nullptr;
1613 Type *GetElementPtrInst::getIndexedType(Type *Ty, ArrayRef<Value *> IdxList) {
1614 return getIndexedTypeInternal(Ty, IdxList);
1617 Type *GetElementPtrInst::getIndexedType(Type *Ty,
1618 ArrayRef<Constant *> IdxList) {
1619 return getIndexedTypeInternal(Ty, IdxList);
1622 Type *GetElementPtrInst::getIndexedType(Type *Ty, ArrayRef<uint64_t> IdxList) {
1623 return getIndexedTypeInternal(Ty, IdxList);
1626 /// hasAllZeroIndices - Return true if all of the indices of this GEP are
1627 /// zeros. If so, the result pointer and the first operand have the same
1628 /// value, just potentially different types.
1629 bool GetElementPtrInst::hasAllZeroIndices() const {
1630 for (unsigned i = 1, e = getNumOperands(); i != e; ++i) {
1631 if (ConstantInt *CI = dyn_cast<ConstantInt>(getOperand(i))) {
1632 if (!CI->isZero()) return false;
1640 /// hasAllConstantIndices - Return true if all of the indices of this GEP are
1641 /// constant integers. If so, the result pointer and the first operand have
1642 /// a constant offset between them.
1643 bool GetElementPtrInst::hasAllConstantIndices() const {
1644 for (unsigned i = 1, e = getNumOperands(); i != e; ++i) {
1645 if (!isa<ConstantInt>(getOperand(i)))
1651 void GetElementPtrInst::setIsInBounds(bool B) {
1652 cast<GEPOperator>(this)->setIsInBounds(B);
1655 bool GetElementPtrInst::isInBounds() const {
1656 return cast<GEPOperator>(this)->isInBounds();
1659 bool GetElementPtrInst::accumulateConstantOffset(const DataLayout &DL,
1660 APInt &Offset) const {
1661 // Delegate to the generic GEPOperator implementation.
1662 return cast<GEPOperator>(this)->accumulateConstantOffset(DL, Offset);
1665 //===----------------------------------------------------------------------===//
1666 // ExtractElementInst Implementation
1667 //===----------------------------------------------------------------------===//
1669 ExtractElementInst::ExtractElementInst(Value *Val, Value *Index,
1671 Instruction *InsertBef)
1672 : Instruction(cast<VectorType>(Val->getType())->getElementType(),
1674 OperandTraits<ExtractElementInst>::op_begin(this),
1676 assert(isValidOperands(Val, Index) &&
1677 "Invalid extractelement instruction operands!");
1683 ExtractElementInst::ExtractElementInst(Value *Val, Value *Index,
1685 BasicBlock *InsertAE)
1686 : Instruction(cast<VectorType>(Val->getType())->getElementType(),
1688 OperandTraits<ExtractElementInst>::op_begin(this),
1690 assert(isValidOperands(Val, Index) &&
1691 "Invalid extractelement instruction operands!");
1699 bool ExtractElementInst::isValidOperands(const Value *Val, const Value *Index) {
1700 if (!Val->getType()->isVectorTy() || !Index->getType()->isIntegerTy())
1706 //===----------------------------------------------------------------------===//
1707 // InsertElementInst Implementation
1708 //===----------------------------------------------------------------------===//
1710 InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, Value *Index,
1712 Instruction *InsertBef)
1713 : Instruction(Vec->getType(), InsertElement,
1714 OperandTraits<InsertElementInst>::op_begin(this),
1716 assert(isValidOperands(Vec, Elt, Index) &&
1717 "Invalid insertelement instruction operands!");
1724 InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, Value *Index,
1726 BasicBlock *InsertAE)
1727 : Instruction(Vec->getType(), InsertElement,
1728 OperandTraits<InsertElementInst>::op_begin(this),
1730 assert(isValidOperands(Vec, Elt, Index) &&
1731 "Invalid insertelement instruction operands!");
1739 bool InsertElementInst::isValidOperands(const Value *Vec, const Value *Elt,
1740 const Value *Index) {
1741 if (!Vec->getType()->isVectorTy())
1742 return false; // First operand of insertelement must be vector type.
1744 if (Elt->getType() != cast<VectorType>(Vec->getType())->getElementType())
1745 return false;// Second operand of insertelement must be vector element type.
1747 if (!Index->getType()->isIntegerTy())
1748 return false; // Third operand of insertelement must be i32.
1753 //===----------------------------------------------------------------------===//
1754 // ShuffleVectorInst Implementation
1755 //===----------------------------------------------------------------------===//
1757 ShuffleVectorInst::ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
1759 Instruction *InsertBefore)
1760 : Instruction(VectorType::get(cast<VectorType>(V1->getType())->getElementType(),
1761 cast<VectorType>(Mask->getType())->getNumElements()),
1763 OperandTraits<ShuffleVectorInst>::op_begin(this),
1764 OperandTraits<ShuffleVectorInst>::operands(this),
1766 assert(isValidOperands(V1, V2, Mask) &&
1767 "Invalid shuffle vector instruction operands!");
1774 ShuffleVectorInst::ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
1776 BasicBlock *InsertAtEnd)
1777 : Instruction(VectorType::get(cast<VectorType>(V1->getType())->getElementType(),
1778 cast<VectorType>(Mask->getType())->getNumElements()),
1780 OperandTraits<ShuffleVectorInst>::op_begin(this),
1781 OperandTraits<ShuffleVectorInst>::operands(this),
1783 assert(isValidOperands(V1, V2, Mask) &&
1784 "Invalid shuffle vector instruction operands!");
1792 bool ShuffleVectorInst::isValidOperands(const Value *V1, const Value *V2,
1793 const Value *Mask) {
1794 // V1 and V2 must be vectors of the same type.
1795 if (!V1->getType()->isVectorTy() || V1->getType() != V2->getType())
1798 // Mask must be vector of i32.
1799 VectorType *MaskTy = dyn_cast<VectorType>(Mask->getType());
1800 if (!MaskTy || !MaskTy->getElementType()->isIntegerTy(32))
1803 // Check to see if Mask is valid.
1804 if (isa<UndefValue>(Mask) || isa<ConstantAggregateZero>(Mask))
1807 if (const ConstantVector *MV = dyn_cast<ConstantVector>(Mask)) {
1808 unsigned V1Size = cast<VectorType>(V1->getType())->getNumElements();
1809 for (Value *Op : MV->operands()) {
1810 if (ConstantInt *CI = dyn_cast<ConstantInt>(Op)) {
1811 if (CI->uge(V1Size*2))
1813 } else if (!isa<UndefValue>(Op)) {
1820 if (const ConstantDataSequential *CDS =
1821 dyn_cast<ConstantDataSequential>(Mask)) {
1822 unsigned V1Size = cast<VectorType>(V1->getType())->getNumElements();
1823 for (unsigned i = 0, e = MaskTy->getNumElements(); i != e; ++i)
1824 if (CDS->getElementAsInteger(i) >= V1Size*2)
1829 // The bitcode reader can create a place holder for a forward reference
1830 // used as the shuffle mask. When this occurs, the shuffle mask will
1831 // fall into this case and fail. To avoid this error, do this bit of
1832 // ugliness to allow such a mask pass.
1833 if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(Mask))
1834 if (CE->getOpcode() == Instruction::UserOp1)
1840 /// getMaskValue - Return the index from the shuffle mask for the specified
1841 /// output result. This is either -1 if the element is undef or a number less
1842 /// than 2*numelements.
1843 int ShuffleVectorInst::getMaskValue(Constant *Mask, unsigned i) {
1844 assert(i < Mask->getType()->getVectorNumElements() && "Index out of range");
1845 if (ConstantDataSequential *CDS =dyn_cast<ConstantDataSequential>(Mask))
1846 return CDS->getElementAsInteger(i);
1847 Constant *C = Mask->getAggregateElement(i);
1848 if (isa<UndefValue>(C))
1850 return cast<ConstantInt>(C)->getZExtValue();
1853 /// getShuffleMask - Return the full mask for this instruction, where each
1854 /// element is the element number and undef's are returned as -1.
1855 void ShuffleVectorInst::getShuffleMask(Constant *Mask,
1856 SmallVectorImpl<int> &Result) {
1857 unsigned NumElts = Mask->getType()->getVectorNumElements();
1859 if (ConstantDataSequential *CDS=dyn_cast<ConstantDataSequential>(Mask)) {
1860 for (unsigned i = 0; i != NumElts; ++i)
1861 Result.push_back(CDS->getElementAsInteger(i));
1864 for (unsigned i = 0; i != NumElts; ++i) {
1865 Constant *C = Mask->getAggregateElement(i);
1866 Result.push_back(isa<UndefValue>(C) ? -1 :
1867 cast<ConstantInt>(C)->getZExtValue());
1872 //===----------------------------------------------------------------------===//
1873 // InsertValueInst Class
1874 //===----------------------------------------------------------------------===//
1876 void InsertValueInst::init(Value *Agg, Value *Val, ArrayRef<unsigned> Idxs,
1877 const Twine &Name) {
1878 assert(getNumOperands() == 2 && "NumOperands not initialized?");
1880 // There's no fundamental reason why we require at least one index
1881 // (other than weirdness with &*IdxBegin being invalid; see
1882 // getelementptr's init routine for example). But there's no
1883 // present need to support it.
1884 assert(Idxs.size() > 0 && "InsertValueInst must have at least one index");
1886 assert(ExtractValueInst::getIndexedType(Agg->getType(), Idxs) ==
1887 Val->getType() && "Inserted value must match indexed type!");
1891 Indices.append(Idxs.begin(), Idxs.end());
1895 InsertValueInst::InsertValueInst(const InsertValueInst &IVI)
1896 : Instruction(IVI.getType(), InsertValue,
1897 OperandTraits<InsertValueInst>::op_begin(this), 2),
1898 Indices(IVI.Indices) {
1899 Op<0>() = IVI.getOperand(0);
1900 Op<1>() = IVI.getOperand(1);
1901 SubclassOptionalData = IVI.SubclassOptionalData;
1904 //===----------------------------------------------------------------------===//
1905 // ExtractValueInst Class
1906 //===----------------------------------------------------------------------===//
1908 void ExtractValueInst::init(ArrayRef<unsigned> Idxs, const Twine &Name) {
1909 assert(getNumOperands() == 1 && "NumOperands not initialized?");
1911 // There's no fundamental reason why we require at least one index.
1912 // But there's no present need to support it.
1913 assert(Idxs.size() > 0 && "ExtractValueInst must have at least one index");
1915 Indices.append(Idxs.begin(), Idxs.end());
1919 ExtractValueInst::ExtractValueInst(const ExtractValueInst &EVI)
1920 : UnaryInstruction(EVI.getType(), ExtractValue, EVI.getOperand(0)),
1921 Indices(EVI.Indices) {
1922 SubclassOptionalData = EVI.SubclassOptionalData;
1925 // getIndexedType - Returns the type of the element that would be extracted
1926 // with an extractvalue instruction with the specified parameters.
1928 // A null type is returned if the indices are invalid for the specified
1931 Type *ExtractValueInst::getIndexedType(Type *Agg,
1932 ArrayRef<unsigned> Idxs) {
1933 for (unsigned Index : Idxs) {
1934 // We can't use CompositeType::indexValid(Index) here.
1935 // indexValid() always returns true for arrays because getelementptr allows
1936 // out-of-bounds indices. Since we don't allow those for extractvalue and
1937 // insertvalue we need to check array indexing manually.
1938 // Since the only other types we can index into are struct types it's just
1939 // as easy to check those manually as well.
1940 if (ArrayType *AT = dyn_cast<ArrayType>(Agg)) {
1941 if (Index >= AT->getNumElements())
1943 } else if (StructType *ST = dyn_cast<StructType>(Agg)) {
1944 if (Index >= ST->getNumElements())
1947 // Not a valid type to index into.
1951 Agg = cast<CompositeType>(Agg)->getTypeAtIndex(Index);
1953 return const_cast<Type*>(Agg);
1956 //===----------------------------------------------------------------------===//
1957 // BinaryOperator Class
1958 //===----------------------------------------------------------------------===//
1960 BinaryOperator::BinaryOperator(BinaryOps iType, Value *S1, Value *S2,
1961 Type *Ty, const Twine &Name,
1962 Instruction *InsertBefore)
1963 : Instruction(Ty, iType,
1964 OperandTraits<BinaryOperator>::op_begin(this),
1965 OperandTraits<BinaryOperator>::operands(this),
1973 BinaryOperator::BinaryOperator(BinaryOps iType, Value *S1, Value *S2,
1974 Type *Ty, const Twine &Name,
1975 BasicBlock *InsertAtEnd)
1976 : Instruction(Ty, iType,
1977 OperandTraits<BinaryOperator>::op_begin(this),
1978 OperandTraits<BinaryOperator>::operands(this),
1987 void BinaryOperator::init(BinaryOps iType) {
1988 Value *LHS = getOperand(0), *RHS = getOperand(1);
1989 (void)LHS; (void)RHS; // Silence warnings.
1990 assert(LHS->getType() == RHS->getType() &&
1991 "Binary operator operand types must match!");
1996 assert(getType() == LHS->getType() &&
1997 "Arithmetic operation should return same type as operands!");
1998 assert(getType()->isIntOrIntVectorTy() &&
1999 "Tried to create an integer operation on a non-integer type!");
2001 case FAdd: case FSub:
2003 assert(getType() == LHS->getType() &&
2004 "Arithmetic operation should return same type as operands!");
2005 assert(getType()->isFPOrFPVectorTy() &&
2006 "Tried to create a floating-point operation on a "
2007 "non-floating-point type!");
2011 assert(getType() == LHS->getType() &&
2012 "Arithmetic operation should return same type as operands!");
2013 assert((getType()->isIntegerTy() || (getType()->isVectorTy() &&
2014 cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
2015 "Incorrect operand type (not integer) for S/UDIV");
2018 assert(getType() == LHS->getType() &&
2019 "Arithmetic operation should return same type as operands!");
2020 assert(getType()->isFPOrFPVectorTy() &&
2021 "Incorrect operand type (not floating point) for FDIV");
2025 assert(getType() == LHS->getType() &&
2026 "Arithmetic operation should return same type as operands!");
2027 assert((getType()->isIntegerTy() || (getType()->isVectorTy() &&
2028 cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
2029 "Incorrect operand type (not integer) for S/UREM");
2032 assert(getType() == LHS->getType() &&
2033 "Arithmetic operation should return same type as operands!");
2034 assert(getType()->isFPOrFPVectorTy() &&
2035 "Incorrect operand type (not floating point) for FREM");
2040 assert(getType() == LHS->getType() &&
2041 "Shift operation should return same type as operands!");
2042 assert((getType()->isIntegerTy() ||
2043 (getType()->isVectorTy() &&
2044 cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
2045 "Tried to create a shift operation on a non-integral type!");
2049 assert(getType() == LHS->getType() &&
2050 "Logical operation should return same type as operands!");
2051 assert((getType()->isIntegerTy() ||
2052 (getType()->isVectorTy() &&
2053 cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
2054 "Tried to create a logical operation on a non-integral type!");
2062 BinaryOperator *BinaryOperator::Create(BinaryOps Op, Value *S1, Value *S2,
2064 Instruction *InsertBefore) {
2065 assert(S1->getType() == S2->getType() &&
2066 "Cannot create binary operator with two operands of differing type!");
2067 return new BinaryOperator(Op, S1, S2, S1->getType(), Name, InsertBefore);
2070 BinaryOperator *BinaryOperator::Create(BinaryOps Op, Value *S1, Value *S2,
2072 BasicBlock *InsertAtEnd) {
2073 BinaryOperator *Res = Create(Op, S1, S2, Name);
2074 InsertAtEnd->getInstList().push_back(Res);
2078 BinaryOperator *BinaryOperator::CreateNeg(Value *Op, const Twine &Name,
2079 Instruction *InsertBefore) {
2080 Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
2081 return new BinaryOperator(Instruction::Sub,
2083 Op->getType(), Name, InsertBefore);
2086 BinaryOperator *BinaryOperator::CreateNeg(Value *Op, const Twine &Name,
2087 BasicBlock *InsertAtEnd) {
2088 Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
2089 return new BinaryOperator(Instruction::Sub,
2091 Op->getType(), Name, InsertAtEnd);
2094 BinaryOperator *BinaryOperator::CreateNSWNeg(Value *Op, const Twine &Name,
2095 Instruction *InsertBefore) {
2096 Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
2097 return BinaryOperator::CreateNSWSub(zero, Op, Name, InsertBefore);
2100 BinaryOperator *BinaryOperator::CreateNSWNeg(Value *Op, const Twine &Name,
2101 BasicBlock *InsertAtEnd) {
2102 Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
2103 return BinaryOperator::CreateNSWSub(zero, Op, Name, InsertAtEnd);
2106 BinaryOperator *BinaryOperator::CreateNUWNeg(Value *Op, const Twine &Name,
2107 Instruction *InsertBefore) {
2108 Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
2109 return BinaryOperator::CreateNUWSub(zero, Op, Name, InsertBefore);
2112 BinaryOperator *BinaryOperator::CreateNUWNeg(Value *Op, const Twine &Name,
2113 BasicBlock *InsertAtEnd) {
2114 Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
2115 return BinaryOperator::CreateNUWSub(zero, Op, Name, InsertAtEnd);
2118 BinaryOperator *BinaryOperator::CreateFNeg(Value *Op, const Twine &Name,
2119 Instruction *InsertBefore) {
2120 Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
2121 return new BinaryOperator(Instruction::FSub, zero, Op,
2122 Op->getType(), Name, InsertBefore);
2125 BinaryOperator *BinaryOperator::CreateFNeg(Value *Op, const Twine &Name,
2126 BasicBlock *InsertAtEnd) {
2127 Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
2128 return new BinaryOperator(Instruction::FSub, zero, Op,
2129 Op->getType(), Name, InsertAtEnd);
2132 BinaryOperator *BinaryOperator::CreateNot(Value *Op, const Twine &Name,
2133 Instruction *InsertBefore) {
2134 Constant *C = Constant::getAllOnesValue(Op->getType());
2135 return new BinaryOperator(Instruction::Xor, Op, C,
2136 Op->getType(), Name, InsertBefore);
2139 BinaryOperator *BinaryOperator::CreateNot(Value *Op, const Twine &Name,
2140 BasicBlock *InsertAtEnd) {
2141 Constant *AllOnes = Constant::getAllOnesValue(Op->getType());
2142 return new BinaryOperator(Instruction::Xor, Op, AllOnes,
2143 Op->getType(), Name, InsertAtEnd);
2147 // isConstantAllOnes - Helper function for several functions below
2148 static inline bool isConstantAllOnes(const Value *V) {
2149 if (const Constant *C = dyn_cast<Constant>(V))
2150 return C->isAllOnesValue();
2154 bool BinaryOperator::isNeg(const Value *V) {
2155 if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V))
2156 if (Bop->getOpcode() == Instruction::Sub)
2157 if (Constant* C = dyn_cast<Constant>(Bop->getOperand(0)))
2158 return C->isNegativeZeroValue();
2162 bool BinaryOperator::isFNeg(const Value *V, bool IgnoreZeroSign) {
2163 if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V))
2164 if (Bop->getOpcode() == Instruction::FSub)
2165 if (Constant* C = dyn_cast<Constant>(Bop->getOperand(0))) {
2166 if (!IgnoreZeroSign)
2167 IgnoreZeroSign = cast<Instruction>(V)->hasNoSignedZeros();
2168 return !IgnoreZeroSign ? C->isNegativeZeroValue() : C->isZeroValue();
2173 bool BinaryOperator::isNot(const Value *V) {
2174 if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V))
2175 return (Bop->getOpcode() == Instruction::Xor &&
2176 (isConstantAllOnes(Bop->getOperand(1)) ||
2177 isConstantAllOnes(Bop->getOperand(0))));
2181 Value *BinaryOperator::getNegArgument(Value *BinOp) {
2182 return cast<BinaryOperator>(BinOp)->getOperand(1);
2185 const Value *BinaryOperator::getNegArgument(const Value *BinOp) {
2186 return getNegArgument(const_cast<Value*>(BinOp));
2189 Value *BinaryOperator::getFNegArgument(Value *BinOp) {
2190 return cast<BinaryOperator>(BinOp)->getOperand(1);
2193 const Value *BinaryOperator::getFNegArgument(const Value *BinOp) {
2194 return getFNegArgument(const_cast<Value*>(BinOp));
2197 Value *BinaryOperator::getNotArgument(Value *BinOp) {
2198 assert(isNot(BinOp) && "getNotArgument on non-'not' instruction!");
2199 BinaryOperator *BO = cast<BinaryOperator>(BinOp);
2200 Value *Op0 = BO->getOperand(0);
2201 Value *Op1 = BO->getOperand(1);
2202 if (isConstantAllOnes(Op0)) return Op1;
2204 assert(isConstantAllOnes(Op1));
2208 const Value *BinaryOperator::getNotArgument(const Value *BinOp) {
2209 return getNotArgument(const_cast<Value*>(BinOp));
2213 // swapOperands - Exchange the two operands to this instruction. This
2214 // instruction is safe to use on any binary instruction and does not
2215 // modify the semantics of the instruction. If the instruction is
2216 // order dependent (SetLT f.e.) the opcode is changed.
2218 bool BinaryOperator::swapOperands() {
2219 if (!isCommutative())
2220 return true; // Can't commute operands
2221 Op<0>().swap(Op<1>());
2225 void BinaryOperator::setHasNoUnsignedWrap(bool b) {
2226 cast<OverflowingBinaryOperator>(this)->setHasNoUnsignedWrap(b);
2229 void BinaryOperator::setHasNoSignedWrap(bool b) {
2230 cast<OverflowingBinaryOperator>(this)->setHasNoSignedWrap(b);
2233 void BinaryOperator::setIsExact(bool b) {
2234 cast<PossiblyExactOperator>(this)->setIsExact(b);
2237 bool BinaryOperator::hasNoUnsignedWrap() const {
2238 return cast<OverflowingBinaryOperator>(this)->hasNoUnsignedWrap();
2241 bool BinaryOperator::hasNoSignedWrap() const {
2242 return cast<OverflowingBinaryOperator>(this)->hasNoSignedWrap();
2245 bool BinaryOperator::isExact() const {
2246 return cast<PossiblyExactOperator>(this)->isExact();
2249 void BinaryOperator::copyIRFlags(const Value *V) {
2250 // Copy the wrapping flags.
2251 if (auto *OB = dyn_cast<OverflowingBinaryOperator>(V)) {
2252 setHasNoSignedWrap(OB->hasNoSignedWrap());
2253 setHasNoUnsignedWrap(OB->hasNoUnsignedWrap());
2256 // Copy the exact flag.
2257 if (auto *PE = dyn_cast<PossiblyExactOperator>(V))
2258 setIsExact(PE->isExact());
2260 // Copy the fast-math flags.
2261 if (auto *FP = dyn_cast<FPMathOperator>(V))
2262 copyFastMathFlags(FP->getFastMathFlags());
2265 void BinaryOperator::andIRFlags(const Value *V) {
2266 if (auto *OB = dyn_cast<OverflowingBinaryOperator>(V)) {
2267 setHasNoSignedWrap(hasNoSignedWrap() & OB->hasNoSignedWrap());
2268 setHasNoUnsignedWrap(hasNoUnsignedWrap() & OB->hasNoUnsignedWrap());
2271 if (auto *PE = dyn_cast<PossiblyExactOperator>(V))
2272 setIsExact(isExact() & PE->isExact());
2274 if (auto *FP = dyn_cast<FPMathOperator>(V)) {
2275 FastMathFlags FM = getFastMathFlags();
2276 FM &= FP->getFastMathFlags();
2277 copyFastMathFlags(FM);
2282 //===----------------------------------------------------------------------===//
2283 // FPMathOperator Class
2284 //===----------------------------------------------------------------------===//
2286 /// getFPAccuracy - Get the maximum error permitted by this operation in ULPs.
2287 /// An accuracy of 0.0 means that the operation should be performed with the
2288 /// default precision.
2289 float FPMathOperator::getFPAccuracy() const {
2291 cast<Instruction>(this)->getMetadata(LLVMContext::MD_fpmath);
2294 ConstantFP *Accuracy = mdconst::extract<ConstantFP>(MD->getOperand(0));
2295 return Accuracy->getValueAPF().convertToFloat();
2299 //===----------------------------------------------------------------------===//
2301 //===----------------------------------------------------------------------===//
2303 void CastInst::anchor() {}
2305 // Just determine if this cast only deals with integral->integral conversion.
2306 bool CastInst::isIntegerCast() const {
2307 switch (getOpcode()) {
2308 default: return false;
2309 case Instruction::ZExt:
2310 case Instruction::SExt:
2311 case Instruction::Trunc:
2313 case Instruction::BitCast:
2314 return getOperand(0)->getType()->isIntegerTy() &&
2315 getType()->isIntegerTy();
2319 bool CastInst::isLosslessCast() const {
2320 // Only BitCast can be lossless, exit fast if we're not BitCast
2321 if (getOpcode() != Instruction::BitCast)
2324 // Identity cast is always lossless
2325 Type* SrcTy = getOperand(0)->getType();
2326 Type* DstTy = getType();
2330 // Pointer to pointer is always lossless.
2331 if (SrcTy->isPointerTy())
2332 return DstTy->isPointerTy();
2333 return false; // Other types have no identity values
2336 /// This function determines if the CastInst does not require any bits to be
2337 /// changed in order to effect the cast. Essentially, it identifies cases where
2338 /// no code gen is necessary for the cast, hence the name no-op cast. For
2339 /// example, the following are all no-op casts:
2340 /// # bitcast i32* %x to i8*
2341 /// # bitcast <2 x i32> %x to <4 x i16>
2342 /// # ptrtoint i32* %x to i32 ; on 32-bit plaforms only
2343 /// @brief Determine if the described cast is a no-op.
2344 bool CastInst::isNoopCast(Instruction::CastOps Opcode,
2349 default: llvm_unreachable("Invalid CastOp");
2350 case Instruction::Trunc:
2351 case Instruction::ZExt:
2352 case Instruction::SExt:
2353 case Instruction::FPTrunc:
2354 case Instruction::FPExt:
2355 case Instruction::UIToFP:
2356 case Instruction::SIToFP:
2357 case Instruction::FPToUI:
2358 case Instruction::FPToSI:
2359 case Instruction::AddrSpaceCast:
2360 // TODO: Target informations may give a more accurate answer here.
2362 case Instruction::BitCast:
2363 return true; // BitCast never modifies bits.
2364 case Instruction::PtrToInt:
2365 return IntPtrTy->getScalarSizeInBits() ==
2366 DestTy->getScalarSizeInBits();
2367 case Instruction::IntToPtr:
2368 return IntPtrTy->getScalarSizeInBits() ==
2369 SrcTy->getScalarSizeInBits();
2373 /// @brief Determine if a cast is a no-op.
2374 bool CastInst::isNoopCast(Type *IntPtrTy) const {
2375 return isNoopCast(getOpcode(), getOperand(0)->getType(), getType(), IntPtrTy);
2378 bool CastInst::isNoopCast(const DataLayout &DL) const {
2379 Type *PtrOpTy = nullptr;
2380 if (getOpcode() == Instruction::PtrToInt)
2381 PtrOpTy = getOperand(0)->getType();
2382 else if (getOpcode() == Instruction::IntToPtr)
2383 PtrOpTy = getType();
2386 PtrOpTy ? DL.getIntPtrType(PtrOpTy) : DL.getIntPtrType(getContext(), 0);
2388 return isNoopCast(getOpcode(), getOperand(0)->getType(), getType(), IntPtrTy);
2391 /// This function determines if a pair of casts can be eliminated and what
2392 /// opcode should be used in the elimination. This assumes that there are two
2393 /// instructions like this:
2394 /// * %F = firstOpcode SrcTy %x to MidTy
2395 /// * %S = secondOpcode MidTy %F to DstTy
2396 /// The function returns a resultOpcode so these two casts can be replaced with:
2397 /// * %Replacement = resultOpcode %SrcTy %x to DstTy
2398 /// If no such cast is permited, the function returns 0.
2399 unsigned CastInst::isEliminableCastPair(
2400 Instruction::CastOps firstOp, Instruction::CastOps secondOp,
2401 Type *SrcTy, Type *MidTy, Type *DstTy, Type *SrcIntPtrTy, Type *MidIntPtrTy,
2402 Type *DstIntPtrTy) {
2403 // Define the 144 possibilities for these two cast instructions. The values
2404 // in this matrix determine what to do in a given situation and select the
2405 // case in the switch below. The rows correspond to firstOp, the columns
2406 // correspond to secondOp. In looking at the table below, keep in mind
2407 // the following cast properties:
2409 // Size Compare Source Destination
2410 // Operator Src ? Size Type Sign Type Sign
2411 // -------- ------------ ------------------- ---------------------
2412 // TRUNC > Integer Any Integral Any
2413 // ZEXT < Integral Unsigned Integer Any
2414 // SEXT < Integral Signed Integer Any
2415 // FPTOUI n/a FloatPt n/a Integral Unsigned
2416 // FPTOSI n/a FloatPt n/a Integral Signed
2417 // UITOFP n/a Integral Unsigned FloatPt n/a
2418 // SITOFP n/a Integral Signed FloatPt n/a
2419 // FPTRUNC > FloatPt n/a FloatPt n/a
2420 // FPEXT < FloatPt n/a FloatPt n/a
2421 // PTRTOINT n/a Pointer n/a Integral Unsigned
2422 // INTTOPTR n/a Integral Unsigned Pointer n/a
2423 // BITCAST = FirstClass n/a FirstClass n/a
2424 // ADDRSPCST n/a Pointer n/a Pointer n/a
2426 // NOTE: some transforms are safe, but we consider them to be non-profitable.
2427 // For example, we could merge "fptoui double to i32" + "zext i32 to i64",
2428 // into "fptoui double to i64", but this loses information about the range
2429 // of the produced value (we no longer know the top-part is all zeros).
2430 // Further this conversion is often much more expensive for typical hardware,
2431 // and causes issues when building libgcc. We disallow fptosi+sext for the
2433 const unsigned numCastOps =
2434 Instruction::CastOpsEnd - Instruction::CastOpsBegin;
2435 static const uint8_t CastResults[numCastOps][numCastOps] = {
2436 // T F F U S F F P I B A -+
2437 // R Z S P P I I T P 2 N T S |
2438 // U E E 2 2 2 2 R E I T C C +- secondOp
2439 // N X X U S F F N X N 2 V V |
2440 // C T T I I P P C T T P T T -+
2441 { 1, 0, 0,99,99, 0, 0,99,99,99, 0, 3, 0}, // Trunc -+
2442 { 8, 1, 9,99,99, 2,17,99,99,99, 2, 3, 0}, // ZExt |
2443 { 8, 0, 1,99,99, 0, 2,99,99,99, 0, 3, 0}, // SExt |
2444 { 0, 0, 0,99,99, 0, 0,99,99,99, 0, 3, 0}, // FPToUI |
2445 { 0, 0, 0,99,99, 0, 0,99,99,99, 0, 3, 0}, // FPToSI |
2446 { 99,99,99, 0, 0,99,99, 0, 0,99,99, 4, 0}, // UIToFP +- firstOp
2447 { 99,99,99, 0, 0,99,99, 0, 0,99,99, 4, 0}, // SIToFP |
2448 { 99,99,99, 0, 0,99,99, 0, 0,99,99, 4, 0}, // FPTrunc |
2449 { 99,99,99, 2, 2,99,99,10, 2,99,99, 4, 0}, // FPExt |
2450 { 1, 0, 0,99,99, 0, 0,99,99,99, 7, 3, 0}, // PtrToInt |
2451 { 99,99,99,99,99,99,99,99,99,11,99,15, 0}, // IntToPtr |
2452 { 5, 5, 5, 6, 6, 5, 5, 6, 6,16, 5, 1,14}, // BitCast |
2453 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,13,12}, // AddrSpaceCast -+
2456 // If either of the casts are a bitcast from scalar to vector, disallow the
2457 // merging. However, bitcast of A->B->A are allowed.
2458 bool isFirstBitcast = (firstOp == Instruction::BitCast);
2459 bool isSecondBitcast = (secondOp == Instruction::BitCast);
2460 bool chainedBitcast = (SrcTy == DstTy && isFirstBitcast && isSecondBitcast);
2462 // Check if any of the bitcasts convert scalars<->vectors.
2463 if ((isFirstBitcast && isa<VectorType>(SrcTy) != isa<VectorType>(MidTy)) ||
2464 (isSecondBitcast && isa<VectorType>(MidTy) != isa<VectorType>(DstTy)))
2465 // Unless we are bitcasing to the original type, disallow optimizations.
2466 if (!chainedBitcast) return 0;
2468 int ElimCase = CastResults[firstOp-Instruction::CastOpsBegin]
2469 [secondOp-Instruction::CastOpsBegin];
2472 // Categorically disallowed.
2475 // Allowed, use first cast's opcode.
2478 // Allowed, use second cast's opcode.
2481 // No-op cast in second op implies firstOp as long as the DestTy
2482 // is integer and we are not converting between a vector and a
2484 if (!SrcTy->isVectorTy() && DstTy->isIntegerTy())
2488 // No-op cast in second op implies firstOp as long as the DestTy
2489 // is floating point.
2490 if (DstTy->isFloatingPointTy())
2494 // No-op cast in first op implies secondOp as long as the SrcTy
2496 if (SrcTy->isIntegerTy())
2500 // No-op cast in first op implies secondOp as long as the SrcTy
2501 // is a floating point.
2502 if (SrcTy->isFloatingPointTy())
2506 // Cannot simplify if address spaces are different!
2507 if (SrcTy->getPointerAddressSpace() != DstTy->getPointerAddressSpace())
2510 unsigned MidSize = MidTy->getScalarSizeInBits();
2511 // We can still fold this without knowing the actual sizes as long we
2512 // know that the intermediate pointer is the largest possible
2514 // FIXME: Is this always true?
2516 return Instruction::BitCast;
2518 // ptrtoint, inttoptr -> bitcast (ptr -> ptr) if int size is >= ptr size.
2519 if (!SrcIntPtrTy || DstIntPtrTy != SrcIntPtrTy)
2521 unsigned PtrSize = SrcIntPtrTy->getScalarSizeInBits();
2522 if (MidSize >= PtrSize)
2523 return Instruction::BitCast;
2527 // ext, trunc -> bitcast, if the SrcTy and DstTy are same size
2528 // ext, trunc -> ext, if sizeof(SrcTy) < sizeof(DstTy)
2529 // ext, trunc -> trunc, if sizeof(SrcTy) > sizeof(DstTy)
2530 unsigned SrcSize = SrcTy->getScalarSizeInBits();
2531 unsigned DstSize = DstTy->getScalarSizeInBits();
2532 if (SrcSize == DstSize)
2533 return Instruction::BitCast;
2534 else if (SrcSize < DstSize)
2539 // zext, sext -> zext, because sext can't sign extend after zext
2540 return Instruction::ZExt;
2542 // fpext followed by ftrunc is allowed if the bit size returned to is
2543 // the same as the original, in which case its just a bitcast
2545 return Instruction::BitCast;
2546 return 0; // If the types are not the same we can't eliminate it.
2548 // inttoptr, ptrtoint -> bitcast if SrcSize<=PtrSize and SrcSize==DstSize
2551 unsigned PtrSize = MidIntPtrTy->getScalarSizeInBits();
2552 unsigned SrcSize = SrcTy->getScalarSizeInBits();
2553 unsigned DstSize = DstTy->getScalarSizeInBits();
2554 if (SrcSize <= PtrSize && SrcSize == DstSize)
2555 return Instruction::BitCast;
2559 // addrspacecast, addrspacecast -> bitcast, if SrcAS == DstAS
2560 // addrspacecast, addrspacecast -> addrspacecast, if SrcAS != DstAS
2561 if (SrcTy->getPointerAddressSpace() != DstTy->getPointerAddressSpace())
2562 return Instruction::AddrSpaceCast;
2563 return Instruction::BitCast;
2566 // FIXME: this state can be merged with (1), but the following assert
2567 // is useful to check the correcteness of the sequence due to semantic
2568 // change of bitcast.
2570 SrcTy->isPtrOrPtrVectorTy() &&
2571 MidTy->isPtrOrPtrVectorTy() &&
2572 DstTy->isPtrOrPtrVectorTy() &&
2573 SrcTy->getPointerAddressSpace() != MidTy->getPointerAddressSpace() &&
2574 MidTy->getPointerAddressSpace() == DstTy->getPointerAddressSpace() &&
2575 "Illegal addrspacecast, bitcast sequence!");
2576 // Allowed, use first cast's opcode
2579 // bitcast, addrspacecast -> addrspacecast if the element type of
2580 // bitcast's source is the same as that of addrspacecast's destination.
2581 if (SrcTy->getPointerElementType() == DstTy->getPointerElementType())
2582 return Instruction::AddrSpaceCast;
2586 // FIXME: this state can be merged with (1), but the following assert
2587 // is useful to check the correcteness of the sequence due to semantic
2588 // change of bitcast.
2590 SrcTy->isIntOrIntVectorTy() &&
2591 MidTy->isPtrOrPtrVectorTy() &&
2592 DstTy->isPtrOrPtrVectorTy() &&
2593 MidTy->getPointerAddressSpace() == DstTy->getPointerAddressSpace() &&
2594 "Illegal inttoptr, bitcast sequence!");
2595 // Allowed, use first cast's opcode
2598 // FIXME: this state can be merged with (2), but the following assert
2599 // is useful to check the correcteness of the sequence due to semantic
2600 // change of bitcast.
2602 SrcTy->isPtrOrPtrVectorTy() &&
2603 MidTy->isPtrOrPtrVectorTy() &&
2604 DstTy->isIntOrIntVectorTy() &&
2605 SrcTy->getPointerAddressSpace() == MidTy->getPointerAddressSpace() &&
2606 "Illegal bitcast, ptrtoint sequence!");
2607 // Allowed, use second cast's opcode
2610 // (sitofp (zext x)) -> (uitofp x)
2611 return Instruction::UIToFP;
2613 // Cast combination can't happen (error in input). This is for all cases
2614 // where the MidTy is not the same for the two cast instructions.
2615 llvm_unreachable("Invalid Cast Combination");
2617 llvm_unreachable("Error in CastResults table!!!");
2621 CastInst *CastInst::Create(Instruction::CastOps op, Value *S, Type *Ty,
2622 const Twine &Name, Instruction *InsertBefore) {
2623 assert(castIsValid(op, S, Ty) && "Invalid cast!");
2624 // Construct and return the appropriate CastInst subclass
2626 case Trunc: return new TruncInst (S, Ty, Name, InsertBefore);
2627 case ZExt: return new ZExtInst (S, Ty, Name, InsertBefore);
2628 case SExt: return new SExtInst (S, Ty, Name, InsertBefore);
2629 case FPTrunc: return new FPTruncInst (S, Ty, Name, InsertBefore);
2630 case FPExt: return new FPExtInst (S, Ty, Name, InsertBefore);
2631 case UIToFP: return new UIToFPInst (S, Ty, Name, InsertBefore);
2632 case SIToFP: return new SIToFPInst (S, Ty, Name, InsertBefore);
2633 case FPToUI: return new FPToUIInst (S, Ty, Name, InsertBefore);
2634 case FPToSI: return new FPToSIInst (S, Ty, Name, InsertBefore);
2635 case PtrToInt: return new PtrToIntInst (S, Ty, Name, InsertBefore);
2636 case IntToPtr: return new IntToPtrInst (S, Ty, Name, InsertBefore);
2637 case BitCast: return new BitCastInst (S, Ty, Name, InsertBefore);
2638 case AddrSpaceCast: return new AddrSpaceCastInst (S, Ty, Name, InsertBefore);
2639 default: llvm_unreachable("Invalid opcode provided");
2643 CastInst *CastInst::Create(Instruction::CastOps op, Value *S, Type *Ty,
2644 const Twine &Name, BasicBlock *InsertAtEnd) {
2645 assert(castIsValid(op, S, Ty) && "Invalid cast!");
2646 // Construct and return the appropriate CastInst subclass
2648 case Trunc: return new TruncInst (S, Ty, Name, InsertAtEnd);
2649 case ZExt: return new ZExtInst (S, Ty, Name, InsertAtEnd);
2650 case SExt: return new SExtInst (S, Ty, Name, InsertAtEnd);
2651 case FPTrunc: return new FPTruncInst (S, Ty, Name, InsertAtEnd);
2652 case FPExt: return new FPExtInst (S, Ty, Name, InsertAtEnd);
2653 case UIToFP: return new UIToFPInst (S, Ty, Name, InsertAtEnd);
2654 case SIToFP: return new SIToFPInst (S, Ty, Name, InsertAtEnd);
2655 case FPToUI: return new FPToUIInst (S, Ty, Name, InsertAtEnd);
2656 case FPToSI: return new FPToSIInst (S, Ty, Name, InsertAtEnd);
2657 case PtrToInt: return new PtrToIntInst (S, Ty, Name, InsertAtEnd);
2658 case IntToPtr: return new IntToPtrInst (S, Ty, Name, InsertAtEnd);
2659 case BitCast: return new BitCastInst (S, Ty, Name, InsertAtEnd);
2660 case AddrSpaceCast: return new AddrSpaceCastInst (S, Ty, Name, InsertAtEnd);
2661 default: llvm_unreachable("Invalid opcode provided");
2665 CastInst *CastInst::CreateZExtOrBitCast(Value *S, Type *Ty,
2667 Instruction *InsertBefore) {
2668 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2669 return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
2670 return Create(Instruction::ZExt, S, Ty, Name, InsertBefore);
2673 CastInst *CastInst::CreateZExtOrBitCast(Value *S, Type *Ty,
2675 BasicBlock *InsertAtEnd) {
2676 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2677 return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
2678 return Create(Instruction::ZExt, S, Ty, Name, InsertAtEnd);
2681 CastInst *CastInst::CreateSExtOrBitCast(Value *S, Type *Ty,
2683 Instruction *InsertBefore) {
2684 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2685 return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
2686 return Create(Instruction::SExt, S, Ty, Name, InsertBefore);
2689 CastInst *CastInst::CreateSExtOrBitCast(Value *S, Type *Ty,
2691 BasicBlock *InsertAtEnd) {
2692 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2693 return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
2694 return Create(Instruction::SExt, S, Ty, Name, InsertAtEnd);
2697 CastInst *CastInst::CreateTruncOrBitCast(Value *S, Type *Ty,
2699 Instruction *InsertBefore) {
2700 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2701 return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
2702 return Create(Instruction::Trunc, S, Ty, Name, InsertBefore);
2705 CastInst *CastInst::CreateTruncOrBitCast(Value *S, Type *Ty,
2707 BasicBlock *InsertAtEnd) {
2708 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2709 return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
2710 return Create(Instruction::Trunc, S, Ty, Name, InsertAtEnd);
2713 CastInst *CastInst::CreatePointerCast(Value *S, Type *Ty,
2715 BasicBlock *InsertAtEnd) {
2716 assert(S->getType()->isPtrOrPtrVectorTy() && "Invalid cast");
2717 assert((Ty->isIntOrIntVectorTy() || Ty->isPtrOrPtrVectorTy()) &&
2719 assert(Ty->isVectorTy() == S->getType()->isVectorTy() && "Invalid cast");
2720 assert((!Ty->isVectorTy() ||
2721 Ty->getVectorNumElements() == S->getType()->getVectorNumElements()) &&
2724 if (Ty->isIntOrIntVectorTy())
2725 return Create(Instruction::PtrToInt, S, Ty, Name, InsertAtEnd);
2727 return CreatePointerBitCastOrAddrSpaceCast(S, Ty, Name, InsertAtEnd);
2730 /// @brief Create a BitCast or a PtrToInt cast instruction
2731 CastInst *CastInst::CreatePointerCast(Value *S, Type *Ty,
2733 Instruction *InsertBefore) {
2734 assert(S->getType()->isPtrOrPtrVectorTy() && "Invalid cast");
2735 assert((Ty->isIntOrIntVectorTy() || Ty->isPtrOrPtrVectorTy()) &&
2737 assert(Ty->isVectorTy() == S->getType()->isVectorTy() && "Invalid cast");
2738 assert((!Ty->isVectorTy() ||
2739 Ty->getVectorNumElements() == S->getType()->getVectorNumElements()) &&
2742 if (Ty->isIntOrIntVectorTy())
2743 return Create(Instruction::PtrToInt, S, Ty, Name, InsertBefore);
2745 return CreatePointerBitCastOrAddrSpaceCast(S, Ty, Name, InsertBefore);
2748 CastInst *CastInst::CreatePointerBitCastOrAddrSpaceCast(
2751 BasicBlock *InsertAtEnd) {
2752 assert(S->getType()->isPtrOrPtrVectorTy() && "Invalid cast");
2753 assert(Ty->isPtrOrPtrVectorTy() && "Invalid cast");
2755 if (S->getType()->getPointerAddressSpace() != Ty->getPointerAddressSpace())
2756 return Create(Instruction::AddrSpaceCast, S, Ty, Name, InsertAtEnd);
2758 return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
2761 CastInst *CastInst::CreatePointerBitCastOrAddrSpaceCast(
2764 Instruction *InsertBefore) {
2765 assert(S->getType()->isPtrOrPtrVectorTy() && "Invalid cast");
2766 assert(Ty->isPtrOrPtrVectorTy() && "Invalid cast");
2768 if (S->getType()->getPointerAddressSpace() != Ty->getPointerAddressSpace())
2769 return Create(Instruction::AddrSpaceCast, S, Ty, Name, InsertBefore);
2771 return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
2774 CastInst *CastInst::CreateBitOrPointerCast(Value *S, Type *Ty,
2776 Instruction *InsertBefore) {
2777 if (S->getType()->isPointerTy() && Ty->isIntegerTy())
2778 return Create(Instruction::PtrToInt, S, Ty, Name, InsertBefore);
2779 if (S->getType()->isIntegerTy() && Ty->isPointerTy())
2780 return Create(Instruction::IntToPtr, S, Ty, Name, InsertBefore);
2782 return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
2785 CastInst *CastInst::CreateIntegerCast(Value *C, Type *Ty,
2786 bool isSigned, const Twine &Name,
2787 Instruction *InsertBefore) {
2788 assert(C->getType()->isIntOrIntVectorTy() && Ty->isIntOrIntVectorTy() &&
2789 "Invalid integer cast");
2790 unsigned SrcBits = C->getType()->getScalarSizeInBits();
2791 unsigned DstBits = Ty->getScalarSizeInBits();
2792 Instruction::CastOps opcode =
2793 (SrcBits == DstBits ? Instruction::BitCast :
2794 (SrcBits > DstBits ? Instruction::Trunc :
2795 (isSigned ? Instruction::SExt : Instruction::ZExt)));
2796 return Create(opcode, C, Ty, Name, InsertBefore);
2799 CastInst *CastInst::CreateIntegerCast(Value *C, Type *Ty,
2800 bool isSigned, const Twine &Name,
2801 BasicBlock *InsertAtEnd) {
2802 assert(C->getType()->isIntOrIntVectorTy() && Ty->isIntOrIntVectorTy() &&
2804 unsigned SrcBits = C->getType()->getScalarSizeInBits();
2805 unsigned DstBits = Ty->getScalarSizeInBits();
2806 Instruction::CastOps opcode =
2807 (SrcBits == DstBits ? Instruction::BitCast :
2808 (SrcBits > DstBits ? Instruction::Trunc :
2809 (isSigned ? Instruction::SExt : Instruction::ZExt)));
2810 return Create(opcode, C, Ty, Name, InsertAtEnd);
2813 CastInst *CastInst::CreateFPCast(Value *C, Type *Ty,
2815 Instruction *InsertBefore) {
2816 assert(C->getType()->isFPOrFPVectorTy() && Ty->isFPOrFPVectorTy() &&
2818 unsigned SrcBits = C->getType()->getScalarSizeInBits();
2819 unsigned DstBits = Ty->getScalarSizeInBits();
2820 Instruction::CastOps opcode =
2821 (SrcBits == DstBits ? Instruction::BitCast :
2822 (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt));
2823 return Create(opcode, C, Ty, Name, InsertBefore);
2826 CastInst *CastInst::CreateFPCast(Value *C, Type *Ty,
2828 BasicBlock *InsertAtEnd) {
2829 assert(C->getType()->isFPOrFPVectorTy() && Ty->isFPOrFPVectorTy() &&
2831 unsigned SrcBits = C->getType()->getScalarSizeInBits();
2832 unsigned DstBits = Ty->getScalarSizeInBits();
2833 Instruction::CastOps opcode =
2834 (SrcBits == DstBits ? Instruction::BitCast :
2835 (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt));
2836 return Create(opcode, C, Ty, Name, InsertAtEnd);
2839 // Check whether it is valid to call getCastOpcode for these types.
2840 // This routine must be kept in sync with getCastOpcode.
2841 bool CastInst::isCastable(Type *SrcTy, Type *DestTy) {
2842 if (!SrcTy->isFirstClassType() || !DestTy->isFirstClassType())
2845 if (SrcTy == DestTy)
2848 if (VectorType *SrcVecTy = dyn_cast<VectorType>(SrcTy))
2849 if (VectorType *DestVecTy = dyn_cast<VectorType>(DestTy))
2850 if (SrcVecTy->getNumElements() == DestVecTy->getNumElements()) {
2851 // An element by element cast. Valid if casting the elements is valid.
2852 SrcTy = SrcVecTy->getElementType();
2853 DestTy = DestVecTy->getElementType();
2856 // Get the bit sizes, we'll need these
2857 unsigned SrcBits = SrcTy->getPrimitiveSizeInBits(); // 0 for ptr
2858 unsigned DestBits = DestTy->getPrimitiveSizeInBits(); // 0 for ptr
2860 // Run through the possibilities ...
2861 if (DestTy->isIntegerTy()) { // Casting to integral
2862 if (SrcTy->isIntegerTy()) // Casting from integral
2864 if (SrcTy->isFloatingPointTy()) // Casting from floating pt
2866 if (SrcTy->isVectorTy()) // Casting from vector
2867 return DestBits == SrcBits;
2868 // Casting from something else
2869 return SrcTy->isPointerTy();
2871 if (DestTy->isFloatingPointTy()) { // Casting to floating pt
2872 if (SrcTy->isIntegerTy()) // Casting from integral
2874 if (SrcTy->isFloatingPointTy()) // Casting from floating pt
2876 if (SrcTy->isVectorTy()) // Casting from vector
2877 return DestBits == SrcBits;
2878 // Casting from something else
2881 if (DestTy->isVectorTy()) // Casting to vector
2882 return DestBits == SrcBits;
2883 if (DestTy->isPointerTy()) { // Casting to pointer
2884 if (SrcTy->isPointerTy()) // Casting from pointer
2886 return SrcTy->isIntegerTy(); // Casting from integral
2888 if (DestTy->isX86_MMXTy()) {
2889 if (SrcTy->isVectorTy())
2890 return DestBits == SrcBits; // 64-bit vector to MMX
2892 } // Casting to something else
2896 bool CastInst::isBitCastable(Type *SrcTy, Type *DestTy) {
2897 if (!SrcTy->isFirstClassType() || !DestTy->isFirstClassType())
2900 if (SrcTy == DestTy)
2903 if (VectorType *SrcVecTy = dyn_cast<VectorType>(SrcTy)) {
2904 if (VectorType *DestVecTy = dyn_cast<VectorType>(DestTy)) {
2905 if (SrcVecTy->getNumElements() == DestVecTy->getNumElements()) {
2906 // An element by element cast. Valid if casting the elements is valid.
2907 SrcTy = SrcVecTy->getElementType();
2908 DestTy = DestVecTy->getElementType();
2913 if (PointerType *DestPtrTy = dyn_cast<PointerType>(DestTy)) {
2914 if (PointerType *SrcPtrTy = dyn_cast<PointerType>(SrcTy)) {
2915 return SrcPtrTy->getAddressSpace() == DestPtrTy->getAddressSpace();
2919 unsigned SrcBits = SrcTy->getPrimitiveSizeInBits(); // 0 for ptr
2920 unsigned DestBits = DestTy->getPrimitiveSizeInBits(); // 0 for ptr
2922 // Could still have vectors of pointers if the number of elements doesn't
2924 if (SrcBits == 0 || DestBits == 0)
2927 if (SrcBits != DestBits)
2930 if (DestTy->isX86_MMXTy() || SrcTy->isX86_MMXTy())
2936 bool CastInst::isBitOrNoopPointerCastable(Type *SrcTy, Type *DestTy,
2937 const DataLayout &DL) {
2938 if (auto *PtrTy = dyn_cast<PointerType>(SrcTy))
2939 if (auto *IntTy = dyn_cast<IntegerType>(DestTy))
2940 return IntTy->getBitWidth() == DL.getPointerTypeSizeInBits(PtrTy);
2941 if (auto *PtrTy = dyn_cast<PointerType>(DestTy))
2942 if (auto *IntTy = dyn_cast<IntegerType>(SrcTy))
2943 return IntTy->getBitWidth() == DL.getPointerTypeSizeInBits(PtrTy);
2945 return isBitCastable(SrcTy, DestTy);
2948 // Provide a way to get a "cast" where the cast opcode is inferred from the
2949 // types and size of the operand. This, basically, is a parallel of the
2950 // logic in the castIsValid function below. This axiom should hold:
2951 // castIsValid( getCastOpcode(Val, Ty), Val, Ty)
2952 // should not assert in castIsValid. In other words, this produces a "correct"
2953 // casting opcode for the arguments passed to it.
2954 // This routine must be kept in sync with isCastable.
2955 Instruction::CastOps
2956 CastInst::getCastOpcode(
2957 const Value *Src, bool SrcIsSigned, Type *DestTy, bool DestIsSigned) {
2958 Type *SrcTy = Src->getType();
2960 assert(SrcTy->isFirstClassType() && DestTy->isFirstClassType() &&
2961 "Only first class types are castable!");
2963 if (SrcTy == DestTy)
2966 // FIXME: Check address space sizes here
2967 if (VectorType *SrcVecTy = dyn_cast<VectorType>(SrcTy))
2968 if (VectorType *DestVecTy = dyn_cast<VectorType>(DestTy))
2969 if (SrcVecTy->getNumElements() == DestVecTy->getNumElements()) {
2970 // An element by element cast. Find the appropriate opcode based on the
2972 SrcTy = SrcVecTy->getElementType();
2973 DestTy = DestVecTy->getElementType();
2976 // Get the bit sizes, we'll need these
2977 unsigned SrcBits = SrcTy->getPrimitiveSizeInBits(); // 0 for ptr
2978 unsigned DestBits = DestTy->getPrimitiveSizeInBits(); // 0 for ptr
2980 // Run through the possibilities ...
2981 if (DestTy->isIntegerTy()) { // Casting to integral
2982 if (SrcTy->isIntegerTy()) { // Casting from integral
2983 if (DestBits < SrcBits)
2984 return Trunc; // int -> smaller int
2985 else if (DestBits > SrcBits) { // its an extension
2987 return SExt; // signed -> SEXT
2989 return ZExt; // unsigned -> ZEXT
2991 return BitCast; // Same size, No-op cast
2993 } else if (SrcTy->isFloatingPointTy()) { // Casting from floating pt
2995 return FPToSI; // FP -> sint
2997 return FPToUI; // FP -> uint
2998 } else if (SrcTy->isVectorTy()) {
2999 assert(DestBits == SrcBits &&
3000 "Casting vector to integer of different width");
3001 return BitCast; // Same size, no-op cast
3003 assert(SrcTy->isPointerTy() &&
3004 "Casting from a value that is not first-class type");
3005 return PtrToInt; // ptr -> int
3007 } else if (DestTy->isFloatingPointTy()) { // Casting to floating pt
3008 if (SrcTy->isIntegerTy()) { // Casting from integral
3010 return SIToFP; // sint -> FP
3012 return UIToFP; // uint -> FP
3013 } else if (SrcTy->isFloatingPointTy()) { // Casting from floating pt
3014 if (DestBits < SrcBits) {
3015 return FPTrunc; // FP -> smaller FP
3016 } else if (DestBits > SrcBits) {
3017 return FPExt; // FP -> larger FP
3019 return BitCast; // same size, no-op cast
3021 } else if (SrcTy->isVectorTy()) {
3022 assert(DestBits == SrcBits &&
3023 "Casting vector to floating point of different width");
3024 return BitCast; // same size, no-op cast
3026 llvm_unreachable("Casting pointer or non-first class to float");
3027 } else if (DestTy->isVectorTy()) {
3028 assert(DestBits == SrcBits &&
3029 "Illegal cast to vector (wrong type or size)");
3031 } else if (DestTy->isPointerTy()) {
3032 if (SrcTy->isPointerTy()) {
3033 if (DestTy->getPointerAddressSpace() != SrcTy->getPointerAddressSpace())
3034 return AddrSpaceCast;
3035 return BitCast; // ptr -> ptr
3036 } else if (SrcTy->isIntegerTy()) {
3037 return IntToPtr; // int -> ptr
3039 llvm_unreachable("Casting pointer to other than pointer or int");
3040 } else if (DestTy->isX86_MMXTy()) {
3041 if (SrcTy->isVectorTy()) {
3042 assert(DestBits == SrcBits && "Casting vector of wrong width to X86_MMX");
3043 return BitCast; // 64-bit vector to MMX
3045 llvm_unreachable("Illegal cast to X86_MMX");
3047 llvm_unreachable("Casting to type that is not first-class");
3050 //===----------------------------------------------------------------------===//
3051 // CastInst SubClass Constructors
3052 //===----------------------------------------------------------------------===//
3054 /// Check that the construction parameters for a CastInst are correct. This
3055 /// could be broken out into the separate constructors but it is useful to have
3056 /// it in one place and to eliminate the redundant code for getting the sizes
3057 /// of the types involved.
3059 CastInst::castIsValid(Instruction::CastOps op, Value *S, Type *DstTy) {
3061 // Check for type sanity on the arguments
3062 Type *SrcTy = S->getType();
3064 if (!SrcTy->isFirstClassType() || !DstTy->isFirstClassType() ||
3065 SrcTy->isAggregateType() || DstTy->isAggregateType())
3068 // Get the size of the types in bits, we'll need this later
3069 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
3070 unsigned DstBitSize = DstTy->getScalarSizeInBits();
3072 // If these are vector types, get the lengths of the vectors (using zero for
3073 // scalar types means that checking that vector lengths match also checks that
3074 // scalars are not being converted to vectors or vectors to scalars).
3075 unsigned SrcLength = SrcTy->isVectorTy() ?
3076 cast<VectorType>(SrcTy)->getNumElements() : 0;
3077 unsigned DstLength = DstTy->isVectorTy() ?
3078 cast<VectorType>(DstTy)->getNumElements() : 0;
3080 // Switch on the opcode provided
3082 default: return false; // This is an input error
3083 case Instruction::Trunc:
3084 return SrcTy->isIntOrIntVectorTy() && DstTy->isIntOrIntVectorTy() &&
3085 SrcLength == DstLength && SrcBitSize > DstBitSize;
3086 case Instruction::ZExt:
3087 return SrcTy->isIntOrIntVectorTy() && DstTy->isIntOrIntVectorTy() &&
3088 SrcLength == DstLength && SrcBitSize < DstBitSize;
3089 case Instruction::SExt:
3090 return SrcTy->isIntOrIntVectorTy() && DstTy->isIntOrIntVectorTy() &&
3091 SrcLength == DstLength && SrcBitSize < DstBitSize;
3092 case Instruction::FPTrunc:
3093 return SrcTy->isFPOrFPVectorTy() && DstTy->isFPOrFPVectorTy() &&
3094 SrcLength == DstLength && SrcBitSize > DstBitSize;
3095 case Instruction::FPExt:
3096 return SrcTy->isFPOrFPVectorTy() && DstTy->isFPOrFPVectorTy() &&
3097 SrcLength == DstLength && SrcBitSize < DstBitSize;
3098 case Instruction::UIToFP:
3099 case Instruction::SIToFP:
3100 return SrcTy->isIntOrIntVectorTy() && DstTy->isFPOrFPVectorTy() &&
3101 SrcLength == DstLength;
3102 case Instruction::FPToUI:
3103 case Instruction::FPToSI:
3104 return SrcTy->isFPOrFPVectorTy() && DstTy->isIntOrIntVectorTy() &&
3105 SrcLength == DstLength;
3106 case Instruction::PtrToInt:
3107 if (isa<VectorType>(SrcTy) != isa<VectorType>(DstTy))
3109 if (VectorType *VT = dyn_cast<VectorType>(SrcTy))
3110 if (VT->getNumElements() != cast<VectorType>(DstTy)->getNumElements())
3112 return SrcTy->getScalarType()->isPointerTy() &&
3113 DstTy->getScalarType()->isIntegerTy();
3114 case Instruction::IntToPtr:
3115 if (isa<VectorType>(SrcTy) != isa<VectorType>(DstTy))
3117 if (VectorType *VT = dyn_cast<VectorType>(SrcTy))
3118 if (VT->getNumElements() != cast<VectorType>(DstTy)->getNumElements())
3120 return SrcTy->getScalarType()->isIntegerTy() &&
3121 DstTy->getScalarType()->isPointerTy();
3122 case Instruction::BitCast: {
3123 PointerType *SrcPtrTy = dyn_cast<PointerType>(SrcTy->getScalarType());
3124 PointerType *DstPtrTy = dyn_cast<PointerType>(DstTy->getScalarType());
3126 // BitCast implies a no-op cast of type only. No bits change.
3127 // However, you can't cast pointers to anything but pointers.
3128 if (!SrcPtrTy != !DstPtrTy)
3131 // For non-pointer cases, the cast is okay if the source and destination bit
3132 // widths are identical.
3134 return SrcTy->getPrimitiveSizeInBits() == DstTy->getPrimitiveSizeInBits();
3136 // If both are pointers then the address spaces must match.
3137 if (SrcPtrTy->getAddressSpace() != DstPtrTy->getAddressSpace())
3140 // A vector of pointers must have the same number of elements.
3141 if (VectorType *SrcVecTy = dyn_cast<VectorType>(SrcTy)) {
3142 if (VectorType *DstVecTy = dyn_cast<VectorType>(DstTy))
3143 return (SrcVecTy->getNumElements() == DstVecTy->getNumElements());
3150 case Instruction::AddrSpaceCast: {
3151 PointerType *SrcPtrTy = dyn_cast<PointerType>(SrcTy->getScalarType());
3155 PointerType *DstPtrTy = dyn_cast<PointerType>(DstTy->getScalarType());
3159 if (SrcPtrTy->getAddressSpace() == DstPtrTy->getAddressSpace())
3162 if (VectorType *SrcVecTy = dyn_cast<VectorType>(SrcTy)) {
3163 if (VectorType *DstVecTy = dyn_cast<VectorType>(DstTy))
3164 return (SrcVecTy->getNumElements() == DstVecTy->getNumElements());
3174 TruncInst::TruncInst(
3175 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3176 ) : CastInst(Ty, Trunc, S, Name, InsertBefore) {
3177 assert(castIsValid(getOpcode(), S, Ty) && "Illegal Trunc");
3180 TruncInst::TruncInst(
3181 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3182 ) : CastInst(Ty, Trunc, S, Name, InsertAtEnd) {
3183 assert(castIsValid(getOpcode(), S, Ty) && "Illegal Trunc");
3187 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3188 ) : CastInst(Ty, ZExt, S, Name, InsertBefore) {
3189 assert(castIsValid(getOpcode(), S, Ty) && "Illegal ZExt");
3193 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3194 ) : CastInst(Ty, ZExt, S, Name, InsertAtEnd) {
3195 assert(castIsValid(getOpcode(), S, Ty) && "Illegal ZExt");
3198 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3199 ) : CastInst(Ty, SExt, S, Name, InsertBefore) {
3200 assert(castIsValid(getOpcode(), S, Ty) && "Illegal SExt");
3204 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3205 ) : CastInst(Ty, SExt, S, Name, InsertAtEnd) {
3206 assert(castIsValid(getOpcode(), S, Ty) && "Illegal SExt");
3209 FPTruncInst::FPTruncInst(
3210 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3211 ) : CastInst(Ty, FPTrunc, S, Name, InsertBefore) {
3212 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPTrunc");
3215 FPTruncInst::FPTruncInst(
3216 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3217 ) : CastInst(Ty, FPTrunc, S, Name, InsertAtEnd) {
3218 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPTrunc");
3221 FPExtInst::FPExtInst(
3222 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3223 ) : CastInst(Ty, FPExt, S, Name, InsertBefore) {
3224 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPExt");
3227 FPExtInst::FPExtInst(
3228 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3229 ) : CastInst(Ty, FPExt, S, Name, InsertAtEnd) {
3230 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPExt");
3233 UIToFPInst::UIToFPInst(
3234 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3235 ) : CastInst(Ty, UIToFP, S, Name, InsertBefore) {
3236 assert(castIsValid(getOpcode(), S, Ty) && "Illegal UIToFP");
3239 UIToFPInst::UIToFPInst(
3240 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3241 ) : CastInst(Ty, UIToFP, S, Name, InsertAtEnd) {
3242 assert(castIsValid(getOpcode(), S, Ty) && "Illegal UIToFP");
3245 SIToFPInst::SIToFPInst(
3246 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3247 ) : CastInst(Ty, SIToFP, S, Name, InsertBefore) {
3248 assert(castIsValid(getOpcode(), S, Ty) && "Illegal SIToFP");
3251 SIToFPInst::SIToFPInst(
3252 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3253 ) : CastInst(Ty, SIToFP, S, Name, InsertAtEnd) {
3254 assert(castIsValid(getOpcode(), S, Ty) && "Illegal SIToFP");
3257 FPToUIInst::FPToUIInst(
3258 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3259 ) : CastInst(Ty, FPToUI, S, Name, InsertBefore) {
3260 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToUI");
3263 FPToUIInst::FPToUIInst(
3264 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3265 ) : CastInst(Ty, FPToUI, S, Name, InsertAtEnd) {
3266 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToUI");
3269 FPToSIInst::FPToSIInst(
3270 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3271 ) : CastInst(Ty, FPToSI, S, Name, InsertBefore) {
3272 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToSI");
3275 FPToSIInst::FPToSIInst(
3276 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3277 ) : CastInst(Ty, FPToSI, S, Name, InsertAtEnd) {
3278 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToSI");
3281 PtrToIntInst::PtrToIntInst(
3282 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3283 ) : CastInst(Ty, PtrToInt, S, Name, InsertBefore) {
3284 assert(castIsValid(getOpcode(), S, Ty) && "Illegal PtrToInt");
3287 PtrToIntInst::PtrToIntInst(
3288 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3289 ) : CastInst(Ty, PtrToInt, S, Name, InsertAtEnd) {
3290 assert(castIsValid(getOpcode(), S, Ty) && "Illegal PtrToInt");
3293 IntToPtrInst::IntToPtrInst(
3294 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3295 ) : CastInst(Ty, IntToPtr, S, Name, InsertBefore) {
3296 assert(castIsValid(getOpcode(), S, Ty) && "Illegal IntToPtr");
3299 IntToPtrInst::IntToPtrInst(
3300 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3301 ) : CastInst(Ty, IntToPtr, S, Name, InsertAtEnd) {
3302 assert(castIsValid(getOpcode(), S, Ty) && "Illegal IntToPtr");
3305 BitCastInst::BitCastInst(
3306 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3307 ) : CastInst(Ty, BitCast, S, Name, InsertBefore) {
3308 assert(castIsValid(getOpcode(), S, Ty) && "Illegal BitCast");
3311 BitCastInst::BitCastInst(
3312 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3313 ) : CastInst(Ty, BitCast, S, Name, InsertAtEnd) {
3314 assert(castIsValid(getOpcode(), S, Ty) && "Illegal BitCast");
3317 AddrSpaceCastInst::AddrSpaceCastInst(
3318 Value *S, Type *Ty, const Twine &Name, Instruction *InsertBefore
3319 ) : CastInst(Ty, AddrSpaceCast, S, Name, InsertBefore) {
3320 assert(castIsValid(getOpcode(), S, Ty) && "Illegal AddrSpaceCast");
3323 AddrSpaceCastInst::AddrSpaceCastInst(
3324 Value *S, Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd
3325 ) : CastInst(Ty, AddrSpaceCast, S, Name, InsertAtEnd) {
3326 assert(castIsValid(getOpcode(), S, Ty) && "Illegal AddrSpaceCast");
3329 //===----------------------------------------------------------------------===//
3331 //===----------------------------------------------------------------------===//
3333 void CmpInst::anchor() {}
3335 CmpInst::CmpInst(Type *ty, OtherOps op, unsigned short predicate,
3336 Value *LHS, Value *RHS, const Twine &Name,
3337 Instruction *InsertBefore)
3338 : Instruction(ty, op,
3339 OperandTraits<CmpInst>::op_begin(this),
3340 OperandTraits<CmpInst>::operands(this),
3344 setPredicate((Predicate)predicate);
3348 CmpInst::CmpInst(Type *ty, OtherOps op, unsigned short predicate,
3349 Value *LHS, Value *RHS, const Twine &Name,
3350 BasicBlock *InsertAtEnd)
3351 : Instruction(ty, op,
3352 OperandTraits<CmpInst>::op_begin(this),
3353 OperandTraits<CmpInst>::operands(this),
3357 setPredicate((Predicate)predicate);
3362 CmpInst::Create(OtherOps Op, unsigned short predicate,
3363 Value *S1, Value *S2,
3364 const Twine &Name, Instruction *InsertBefore) {
3365 if (Op == Instruction::ICmp) {
3367 return new ICmpInst(InsertBefore, CmpInst::Predicate(predicate),
3370 return new ICmpInst(CmpInst::Predicate(predicate),
3375 return new FCmpInst(InsertBefore, CmpInst::Predicate(predicate),
3378 return new FCmpInst(CmpInst::Predicate(predicate),
3383 CmpInst::Create(OtherOps Op, unsigned short predicate, Value *S1, Value *S2,
3384 const Twine &Name, BasicBlock *InsertAtEnd) {
3385 if (Op == Instruction::ICmp) {
3386 return new ICmpInst(*InsertAtEnd, CmpInst::Predicate(predicate),
3389 return new FCmpInst(*InsertAtEnd, CmpInst::Predicate(predicate),
3393 void CmpInst::swapOperands() {
3394 if (ICmpInst *IC = dyn_cast<ICmpInst>(this))
3397 cast<FCmpInst>(this)->swapOperands();
3400 bool CmpInst::isCommutative() const {
3401 if (const ICmpInst *IC = dyn_cast<ICmpInst>(this))
3402 return IC->isCommutative();
3403 return cast<FCmpInst>(this)->isCommutative();
3406 bool CmpInst::isEquality() const {
3407 if (const ICmpInst *IC = dyn_cast<ICmpInst>(this))
3408 return IC->isEquality();
3409 return cast<FCmpInst>(this)->isEquality();
3413 CmpInst::Predicate CmpInst::getInversePredicate(Predicate pred) {
3415 default: llvm_unreachable("Unknown cmp predicate!");
3416 case ICMP_EQ: return ICMP_NE;
3417 case ICMP_NE: return ICMP_EQ;
3418 case ICMP_UGT: return ICMP_ULE;
3419 case ICMP_ULT: return ICMP_UGE;
3420 case ICMP_UGE: return ICMP_ULT;
3421 case ICMP_ULE: return ICMP_UGT;
3422 case ICMP_SGT: return ICMP_SLE;
3423 case ICMP_SLT: return ICMP_SGE;
3424 case ICMP_SGE: return ICMP_SLT;
3425 case ICMP_SLE: return ICMP_SGT;
3427 case FCMP_OEQ: return FCMP_UNE;
3428 case FCMP_ONE: return FCMP_UEQ;
3429 case FCMP_OGT: return FCMP_ULE;
3430 case FCMP_OLT: return FCMP_UGE;
3431 case FCMP_OGE: return FCMP_ULT;
3432 case FCMP_OLE: return FCMP_UGT;
3433 case FCMP_UEQ: return FCMP_ONE;
3434 case FCMP_UNE: return FCMP_OEQ;
3435 case FCMP_UGT: return FCMP_OLE;
3436 case FCMP_ULT: return FCMP_OGE;
3437 case FCMP_UGE: return FCMP_OLT;
3438 case FCMP_ULE: return FCMP_OGT;
3439 case FCMP_ORD: return FCMP_UNO;
3440 case FCMP_UNO: return FCMP_ORD;
3441 case FCMP_TRUE: return FCMP_FALSE;
3442 case FCMP_FALSE: return FCMP_TRUE;
3446 ICmpInst::Predicate ICmpInst::getSignedPredicate(Predicate pred) {
3448 default: llvm_unreachable("Unknown icmp predicate!");
3449 case ICMP_EQ: case ICMP_NE:
3450 case ICMP_SGT: case ICMP_SLT: case ICMP_SGE: case ICMP_SLE:
3452 case ICMP_UGT: return ICMP_SGT;
3453 case ICMP_ULT: return ICMP_SLT;
3454 case ICMP_UGE: return ICMP_SGE;
3455 case ICMP_ULE: return ICMP_SLE;
3459 ICmpInst::Predicate ICmpInst::getUnsignedPredicate(Predicate pred) {
3461 default: llvm_unreachable("Unknown icmp predicate!");
3462 case ICMP_EQ: case ICMP_NE:
3463 case ICMP_UGT: case ICMP_ULT: case ICMP_UGE: case ICMP_ULE:
3465 case ICMP_SGT: return ICMP_UGT;
3466 case ICMP_SLT: return ICMP_ULT;
3467 case ICMP_SGE: return ICMP_UGE;
3468 case ICMP_SLE: return ICMP_ULE;
3472 /// Initialize a set of values that all satisfy the condition with C.
3475 ICmpInst::makeConstantRange(Predicate pred, const APInt &C) {
3478 uint32_t BitWidth = C.getBitWidth();
3480 default: llvm_unreachable("Invalid ICmp opcode to ConstantRange ctor!");
3481 case ICmpInst::ICMP_EQ: ++Upper; break;
3482 case ICmpInst::ICMP_NE: ++Lower; break;
3483 case ICmpInst::ICMP_ULT:
3484 Lower = APInt::getMinValue(BitWidth);
3485 // Check for an empty-set condition.
3487 return ConstantRange(BitWidth, /*isFullSet=*/false);
3489 case ICmpInst::ICMP_SLT:
3490 Lower = APInt::getSignedMinValue(BitWidth);
3491 // Check for an empty-set condition.
3493 return ConstantRange(BitWidth, /*isFullSet=*/false);
3495 case ICmpInst::ICMP_UGT:
3496 ++Lower; Upper = APInt::getMinValue(BitWidth); // Min = Next(Max)
3497 // Check for an empty-set condition.
3499 return ConstantRange(BitWidth, /*isFullSet=*/false);
3501 case ICmpInst::ICMP_SGT:
3502 ++Lower; Upper = APInt::getSignedMinValue(BitWidth); // Min = Next(Max)
3503 // Check for an empty-set condition.
3505 return ConstantRange(BitWidth, /*isFullSet=*/false);
3507 case ICmpInst::ICMP_ULE:
3508 Lower = APInt::getMinValue(BitWidth); ++Upper;
3509 // Check for a full-set condition.
3511 return ConstantRange(BitWidth, /*isFullSet=*/true);
3513 case ICmpInst::ICMP_SLE:
3514 Lower = APInt::getSignedMinValue(BitWidth); ++Upper;
3515 // Check for a full-set condition.
3517 return ConstantRange(BitWidth, /*isFullSet=*/true);
3519 case ICmpInst::ICMP_UGE:
3520 Upper = APInt::getMinValue(BitWidth); // Min = Next(Max)
3521 // Check for a full-set condition.
3523 return ConstantRange(BitWidth, /*isFullSet=*/true);
3525 case ICmpInst::ICMP_SGE:
3526 Upper = APInt::getSignedMinValue(BitWidth); // Min = Next(Max)
3527 // Check for a full-set condition.
3529 return ConstantRange(BitWidth, /*isFullSet=*/true);
3532 return ConstantRange(Lower, Upper);
3535 CmpInst::Predicate CmpInst::getSwappedPredicate(Predicate pred) {
3537 default: llvm_unreachable("Unknown cmp predicate!");
3538 case ICMP_EQ: case ICMP_NE:
3540 case ICMP_SGT: return ICMP_SLT;
3541 case ICMP_SLT: return ICMP_SGT;
3542 case ICMP_SGE: return ICMP_SLE;
3543 case ICMP_SLE: return ICMP_SGE;
3544 case ICMP_UGT: return ICMP_ULT;
3545 case ICMP_ULT: return ICMP_UGT;
3546 case ICMP_UGE: return ICMP_ULE;
3547 case ICMP_ULE: return ICMP_UGE;
3549 case FCMP_FALSE: case FCMP_TRUE:
3550 case FCMP_OEQ: case FCMP_ONE:
3551 case FCMP_UEQ: case FCMP_UNE:
3552 case FCMP_ORD: case FCMP_UNO:
3554 case FCMP_OGT: return FCMP_OLT;
3555 case FCMP_OLT: return FCMP_OGT;
3556 case FCMP_OGE: return FCMP_OLE;
3557 case FCMP_OLE: return FCMP_OGE;
3558 case FCMP_UGT: return FCMP_ULT;
3559 case FCMP_ULT: return FCMP_UGT;
3560 case FCMP_UGE: return FCMP_ULE;
3561 case FCMP_ULE: return FCMP_UGE;
3565 CmpInst::Predicate CmpInst::getSignedPredicate(Predicate pred) {
3566 assert(CmpInst::isUnsigned(pred) && "Call only with signed predicates!");
3570 llvm_unreachable("Unknown predicate!");
3571 case CmpInst::ICMP_ULT:
3572 return CmpInst::ICMP_SLT;
3573 case CmpInst::ICMP_ULE:
3574 return CmpInst::ICMP_SLE;
3575 case CmpInst::ICMP_UGT:
3576 return CmpInst::ICMP_SGT;
3577 case CmpInst::ICMP_UGE:
3578 return CmpInst::ICMP_SGE;
3582 bool CmpInst::isUnsigned(unsigned short predicate) {
3583 switch (predicate) {
3584 default: return false;
3585 case ICmpInst::ICMP_ULT: case ICmpInst::ICMP_ULE: case ICmpInst::ICMP_UGT:
3586 case ICmpInst::ICMP_UGE: return true;
3590 bool CmpInst::isSigned(unsigned short predicate) {
3591 switch (predicate) {
3592 default: return false;
3593 case ICmpInst::ICMP_SLT: case ICmpInst::ICMP_SLE: case ICmpInst::ICMP_SGT:
3594 case ICmpInst::ICMP_SGE: return true;
3598 bool CmpInst::isOrdered(unsigned short predicate) {
3599 switch (predicate) {
3600 default: return false;
3601 case FCmpInst::FCMP_OEQ: case FCmpInst::FCMP_ONE: case FCmpInst::FCMP_OGT:
3602 case FCmpInst::FCMP_OLT: case FCmpInst::FCMP_OGE: case FCmpInst::FCMP_OLE:
3603 case FCmpInst::FCMP_ORD: return true;
3607 bool CmpInst::isUnordered(unsigned short predicate) {
3608 switch (predicate) {
3609 default: return false;
3610 case FCmpInst::FCMP_UEQ: case FCmpInst::FCMP_UNE: case FCmpInst::FCMP_UGT:
3611 case FCmpInst::FCMP_ULT: case FCmpInst::FCMP_UGE: case FCmpInst::FCMP_ULE:
3612 case FCmpInst::FCMP_UNO: return true;
3616 bool CmpInst::isTrueWhenEqual(unsigned short predicate) {
3618 default: return false;
3619 case ICMP_EQ: case ICMP_UGE: case ICMP_ULE: case ICMP_SGE: case ICMP_SLE:
3620 case FCMP_TRUE: case FCMP_UEQ: case FCMP_UGE: case FCMP_ULE: return true;
3624 bool CmpInst::isFalseWhenEqual(unsigned short predicate) {
3626 case ICMP_NE: case ICMP_UGT: case ICMP_ULT: case ICMP_SGT: case ICMP_SLT:
3627 case FCMP_FALSE: case FCMP_ONE: case FCMP_OGT: case FCMP_OLT: return true;
3628 default: return false;
3633 //===----------------------------------------------------------------------===//
3634 // SwitchInst Implementation
3635 //===----------------------------------------------------------------------===//
3637 void SwitchInst::init(Value *Value, BasicBlock *Default, unsigned NumReserved) {
3638 assert(Value && Default && NumReserved);
3639 ReservedSpace = NumReserved;
3640 setNumHungOffUseOperands(2);
3641 allocHungoffUses(ReservedSpace);
3647 /// SwitchInst ctor - Create a new switch instruction, specifying a value to
3648 /// switch on and a default destination. The number of additional cases can
3649 /// be specified here to make memory allocation more efficient. This
3650 /// constructor can also autoinsert before another instruction.
3651 SwitchInst::SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
3652 Instruction *InsertBefore)
3653 : TerminatorInst(Type::getVoidTy(Value->getContext()), Instruction::Switch,
3654 nullptr, 0, InsertBefore) {
3655 init(Value, Default, 2+NumCases*2);
3658 /// SwitchInst ctor - Create a new switch instruction, specifying a value to
3659 /// switch on and a default destination. The number of additional cases can
3660 /// be specified here to make memory allocation more efficient. This
3661 /// constructor also autoinserts at the end of the specified BasicBlock.
3662 SwitchInst::SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
3663 BasicBlock *InsertAtEnd)
3664 : TerminatorInst(Type::getVoidTy(Value->getContext()), Instruction::Switch,
3665 nullptr, 0, InsertAtEnd) {
3666 init(Value, Default, 2+NumCases*2);
3669 SwitchInst::SwitchInst(const SwitchInst &SI)
3670 : TerminatorInst(SI.getType(), Instruction::Switch, nullptr, 0) {
3671 init(SI.getCondition(), SI.getDefaultDest(), SI.getNumOperands());
3672 setNumHungOffUseOperands(SI.getNumOperands());
3673 Use *OL = getOperandList();
3674 const Use *InOL = SI.getOperandList();
3675 for (unsigned i = 2, E = SI.getNumOperands(); i != E; i += 2) {
3677 OL[i+1] = InOL[i+1];
3679 SubclassOptionalData = SI.SubclassOptionalData;
3683 /// addCase - Add an entry to the switch instruction...
3685 void SwitchInst::addCase(ConstantInt *OnVal, BasicBlock *Dest) {
3686 unsigned NewCaseIdx = getNumCases();
3687 unsigned OpNo = getNumOperands();
3688 if (OpNo+2 > ReservedSpace)
3689 growOperands(); // Get more space!
3690 // Initialize some new operands.
3691 assert(OpNo+1 < ReservedSpace && "Growing didn't work!");
3692 setNumHungOffUseOperands(OpNo+2);
3693 CaseIt Case(this, NewCaseIdx);
3694 Case.setValue(OnVal);
3695 Case.setSuccessor(Dest);
3698 /// removeCase - This method removes the specified case and its successor
3699 /// from the switch instruction.
3700 void SwitchInst::removeCase(CaseIt i) {
3701 unsigned idx = i.getCaseIndex();
3703 assert(2 + idx*2 < getNumOperands() && "Case index out of range!!!");
3705 unsigned NumOps = getNumOperands();
3706 Use *OL = getOperandList();
3708 // Overwrite this case with the end of the list.
3709 if (2 + (idx + 1) * 2 != NumOps) {
3710 OL[2 + idx * 2] = OL[NumOps - 2];
3711 OL[2 + idx * 2 + 1] = OL[NumOps - 1];
3714 // Nuke the last value.
3715 OL[NumOps-2].set(nullptr);
3716 OL[NumOps-2+1].set(nullptr);
3717 setNumHungOffUseOperands(NumOps-2);
3720 /// growOperands - grow operands - This grows the operand list in response
3721 /// to a push_back style of operation. This grows the number of ops by 3 times.
3723 void SwitchInst::growOperands() {
3724 unsigned e = getNumOperands();
3725 unsigned NumOps = e*3;
3727 ReservedSpace = NumOps;
3728 growHungoffUses(ReservedSpace);
3732 BasicBlock *SwitchInst::getSuccessorV(unsigned idx) const {
3733 return getSuccessor(idx);
3735 unsigned SwitchInst::getNumSuccessorsV() const {
3736 return getNumSuccessors();
3738 void SwitchInst::setSuccessorV(unsigned idx, BasicBlock *B) {
3739 setSuccessor(idx, B);
3742 //===----------------------------------------------------------------------===//
3743 // IndirectBrInst Implementation
3744 //===----------------------------------------------------------------------===//
3746 void IndirectBrInst::init(Value *Address, unsigned NumDests) {
3747 assert(Address && Address->getType()->isPointerTy() &&
3748 "Address of indirectbr must be a pointer");
3749 ReservedSpace = 1+NumDests;
3750 setNumHungOffUseOperands(1);
3751 allocHungoffUses(ReservedSpace);
3757 /// growOperands - grow operands - This grows the operand list in response
3758 /// to a push_back style of operation. This grows the number of ops by 2 times.
3760 void IndirectBrInst::growOperands() {
3761 unsigned e = getNumOperands();
3762 unsigned NumOps = e*2;
3764 ReservedSpace = NumOps;
3765 growHungoffUses(ReservedSpace);
3768 IndirectBrInst::IndirectBrInst(Value *Address, unsigned NumCases,
3769 Instruction *InsertBefore)
3770 : TerminatorInst(Type::getVoidTy(Address->getContext()),Instruction::IndirectBr,
3771 nullptr, 0, InsertBefore) {
3772 init(Address, NumCases);
3775 IndirectBrInst::IndirectBrInst(Value *Address, unsigned NumCases,
3776 BasicBlock *InsertAtEnd)
3777 : TerminatorInst(Type::getVoidTy(Address->getContext()),Instruction::IndirectBr,
3778 nullptr, 0, InsertAtEnd) {
3779 init(Address, NumCases);
3782 IndirectBrInst::IndirectBrInst(const IndirectBrInst &IBI)
3783 : TerminatorInst(Type::getVoidTy(IBI.getContext()), Instruction::IndirectBr,
3784 nullptr, IBI.getNumOperands()) {
3785 allocHungoffUses(IBI.getNumOperands());
3786 Use *OL = getOperandList();
3787 const Use *InOL = IBI.getOperandList();
3788 for (unsigned i = 0, E = IBI.getNumOperands(); i != E; ++i)
3790 SubclassOptionalData = IBI.SubclassOptionalData;
3793 /// addDestination - Add a destination.
3795 void IndirectBrInst::addDestination(BasicBlock *DestBB) {
3796 unsigned OpNo = getNumOperands();
3797 if (OpNo+1 > ReservedSpace)
3798 growOperands(); // Get more space!
3799 // Initialize some new operands.
3800 assert(OpNo < ReservedSpace && "Growing didn't work!");
3801 setNumHungOffUseOperands(OpNo+1);
3802 getOperandList()[OpNo] = DestBB;
3805 /// removeDestination - This method removes the specified successor from the
3806 /// indirectbr instruction.
3807 void IndirectBrInst::removeDestination(unsigned idx) {
3808 assert(idx < getNumOperands()-1 && "Successor index out of range!");
3810 unsigned NumOps = getNumOperands();
3811 Use *OL = getOperandList();
3813 // Replace this value with the last one.
3814 OL[idx+1] = OL[NumOps-1];
3816 // Nuke the last value.
3817 OL[NumOps-1].set(nullptr);
3818 setNumHungOffUseOperands(NumOps-1);
3821 BasicBlock *IndirectBrInst::getSuccessorV(unsigned idx) const {
3822 return getSuccessor(idx);
3824 unsigned IndirectBrInst::getNumSuccessorsV() const {
3825 return getNumSuccessors();
3827 void IndirectBrInst::setSuccessorV(unsigned idx, BasicBlock *B) {
3828 setSuccessor(idx, B);
3831 //===----------------------------------------------------------------------===//
3832 // cloneImpl() implementations
3833 //===----------------------------------------------------------------------===//
3835 // Define these methods here so vtables don't get emitted into every translation
3836 // unit that uses these classes.
3838 GetElementPtrInst *GetElementPtrInst::cloneImpl() const {
3839 return new (getNumOperands()) GetElementPtrInst(*this);
3842 BinaryOperator *BinaryOperator::cloneImpl() const {
3843 return Create(getOpcode(), Op<0>(), Op<1>());
3846 FCmpInst *FCmpInst::cloneImpl() const {
3847 return new FCmpInst(getPredicate(), Op<0>(), Op<1>());
3850 ICmpInst *ICmpInst::cloneImpl() const {
3851 return new ICmpInst(getPredicate(), Op<0>(), Op<1>());
3854 ExtractValueInst *ExtractValueInst::cloneImpl() const {
3855 return new ExtractValueInst(*this);
3858 InsertValueInst *InsertValueInst::cloneImpl() const {
3859 return new InsertValueInst(*this);
3862 AllocaInst *AllocaInst::cloneImpl() const {
3863 AllocaInst *Result = new AllocaInst(getAllocatedType(),
3864 (Value *)getOperand(0), getAlignment());
3865 Result->setUsedWithInAlloca(isUsedWithInAlloca());
3869 LoadInst *LoadInst::cloneImpl() const {
3870 return new LoadInst(getOperand(0), Twine(), isVolatile(),
3871 getAlignment(), getOrdering(), getSynchScope());
3874 StoreInst *StoreInst::cloneImpl() const {
3875 return new StoreInst(getOperand(0), getOperand(1), isVolatile(),
3876 getAlignment(), getOrdering(), getSynchScope());
3880 AtomicCmpXchgInst *AtomicCmpXchgInst::cloneImpl() const {
3881 AtomicCmpXchgInst *Result =
3882 new AtomicCmpXchgInst(getOperand(0), getOperand(1), getOperand(2),
3883 getSuccessOrdering(), getFailureOrdering(),
3885 Result->setVolatile(isVolatile());
3886 Result->setWeak(isWeak());
3890 AtomicRMWInst *AtomicRMWInst::cloneImpl() const {
3891 AtomicRMWInst *Result =
3892 new AtomicRMWInst(getOperation(),getOperand(0), getOperand(1),
3893 getOrdering(), getSynchScope());
3894 Result->setVolatile(isVolatile());
3898 FenceInst *FenceInst::cloneImpl() const {
3899 return new FenceInst(getContext(), getOrdering(), getSynchScope());
3902 TruncInst *TruncInst::cloneImpl() const {
3903 return new TruncInst(getOperand(0), getType());
3906 ZExtInst *ZExtInst::cloneImpl() const {
3907 return new ZExtInst(getOperand(0), getType());
3910 SExtInst *SExtInst::cloneImpl() const {
3911 return new SExtInst(getOperand(0), getType());
3914 FPTruncInst *FPTruncInst::cloneImpl() const {
3915 return new FPTruncInst(getOperand(0), getType());
3918 FPExtInst *FPExtInst::cloneImpl() const {
3919 return new FPExtInst(getOperand(0), getType());
3922 UIToFPInst *UIToFPInst::cloneImpl() const {
3923 return new UIToFPInst(getOperand(0), getType());
3926 SIToFPInst *SIToFPInst::cloneImpl() const {
3927 return new SIToFPInst(getOperand(0), getType());
3930 FPToUIInst *FPToUIInst::cloneImpl() const {
3931 return new FPToUIInst(getOperand(0), getType());
3934 FPToSIInst *FPToSIInst::cloneImpl() const {
3935 return new FPToSIInst(getOperand(0), getType());
3938 PtrToIntInst *PtrToIntInst::cloneImpl() const {
3939 return new PtrToIntInst(getOperand(0), getType());
3942 IntToPtrInst *IntToPtrInst::cloneImpl() const {
3943 return new IntToPtrInst(getOperand(0), getType());
3946 BitCastInst *BitCastInst::cloneImpl() const {
3947 return new BitCastInst(getOperand(0), getType());
3950 AddrSpaceCastInst *AddrSpaceCastInst::cloneImpl() const {
3951 return new AddrSpaceCastInst(getOperand(0), getType());
3954 CallInst *CallInst::cloneImpl() const {
3955 return new(getNumOperands()) CallInst(*this);
3958 SelectInst *SelectInst::cloneImpl() const {
3959 return SelectInst::Create(getOperand(0), getOperand(1), getOperand(2));
3962 VAArgInst *VAArgInst::cloneImpl() const {
3963 return new VAArgInst(getOperand(0), getType());
3966 ExtractElementInst *ExtractElementInst::cloneImpl() const {
3967 return ExtractElementInst::Create(getOperand(0), getOperand(1));
3970 InsertElementInst *InsertElementInst::cloneImpl() const {
3971 return InsertElementInst::Create(getOperand(0), getOperand(1), getOperand(2));
3974 ShuffleVectorInst *ShuffleVectorInst::cloneImpl() const {
3975 return new ShuffleVectorInst(getOperand(0), getOperand(1), getOperand(2));
3978 PHINode *PHINode::cloneImpl() const { return new PHINode(*this); }
3980 LandingPadInst *LandingPadInst::cloneImpl() const {
3981 return new LandingPadInst(*this);
3984 ReturnInst *ReturnInst::cloneImpl() const {
3985 return new(getNumOperands()) ReturnInst(*this);
3988 BranchInst *BranchInst::cloneImpl() const {
3989 return new(getNumOperands()) BranchInst(*this);
3992 SwitchInst *SwitchInst::cloneImpl() const { return new SwitchInst(*this); }
3994 IndirectBrInst *IndirectBrInst::cloneImpl() const {
3995 return new IndirectBrInst(*this);
3998 InvokeInst *InvokeInst::cloneImpl() const {
3999 return new(getNumOperands()) InvokeInst(*this);
4002 ResumeInst *ResumeInst::cloneImpl() const { return new (1) ResumeInst(*this); }
4004 CleanupEndPadInst *CleanupEndPadInst::cloneImpl() const {
4005 return new (getNumOperands()) CleanupEndPadInst(*this);
4008 CleanupReturnInst *CleanupReturnInst::cloneImpl() const {
4009 return new (getNumOperands()) CleanupReturnInst(*this);
4012 CatchEndPadInst *CatchEndPadInst::cloneImpl() const {
4013 return new (getNumOperands()) CatchEndPadInst(*this);
4016 CatchReturnInst *CatchReturnInst::cloneImpl() const {
4017 return new (getNumOperands()) CatchReturnInst(*this);
4020 CatchPadInst *CatchPadInst::cloneImpl() const {
4021 return new (getNumOperands()) CatchPadInst(*this);
4024 TerminatePadInst *TerminatePadInst::cloneImpl() const {
4025 return new (getNumOperands()) TerminatePadInst(*this);
4028 CleanupPadInst *CleanupPadInst::cloneImpl() const {
4029 return new (getNumOperands()) CleanupPadInst(*this);
4032 UnreachableInst *UnreachableInst::cloneImpl() const {
4033 LLVMContext &Context = getContext();
4034 return new UnreachableInst(Context);