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/Constants.h"
16 #include "llvm/DerivedTypes.h"
17 #include "llvm/Function.h"
18 #include "llvm/Instructions.h"
19 #include "llvm/Support/CallSite.h"
20 #include "llvm/Support/ConstantRange.h"
21 #include "llvm/Support/MathExtras.h"
24 //===----------------------------------------------------------------------===//
26 //===----------------------------------------------------------------------===//
28 #define CALLSITE_DELEGATE_GETTER(METHOD) \
29 Instruction *II(getInstruction()); \
31 ? cast<CallInst>(II)->METHOD \
32 : cast<InvokeInst>(II)->METHOD
34 #define CALLSITE_DELEGATE_SETTER(METHOD) \
35 Instruction *II(getInstruction()); \
37 cast<CallInst>(II)->METHOD; \
39 cast<InvokeInst>(II)->METHOD
41 CallSite::CallSite(Instruction *C) {
42 assert((isa<CallInst>(C) || isa<InvokeInst>(C)) && "Not a call!");
44 I.setInt(isa<CallInst>(C));
46 unsigned CallSite::getCallingConv() const {
47 CALLSITE_DELEGATE_GETTER(getCallingConv());
49 void CallSite::setCallingConv(unsigned CC) {
50 CALLSITE_DELEGATE_SETTER(setCallingConv(CC));
52 const AttrListPtr &CallSite::getAttributes() const {
53 CALLSITE_DELEGATE_GETTER(getAttributes());
55 void CallSite::setAttributes(const AttrListPtr &PAL) {
56 CALLSITE_DELEGATE_SETTER(setAttributes(PAL));
58 bool CallSite::paramHasAttr(uint16_t i, Attributes attr) const {
59 CALLSITE_DELEGATE_GETTER(paramHasAttr(i, attr));
61 uint16_t CallSite::getParamAlignment(uint16_t i) const {
62 CALLSITE_DELEGATE_GETTER(getParamAlignment(i));
64 bool CallSite::doesNotAccessMemory() const {
65 CALLSITE_DELEGATE_GETTER(doesNotAccessMemory());
67 void CallSite::setDoesNotAccessMemory(bool doesNotAccessMemory) {
68 CALLSITE_DELEGATE_SETTER(setDoesNotAccessMemory(doesNotAccessMemory));
70 bool CallSite::onlyReadsMemory() const {
71 CALLSITE_DELEGATE_GETTER(onlyReadsMemory());
73 void CallSite::setOnlyReadsMemory(bool onlyReadsMemory) {
74 CALLSITE_DELEGATE_SETTER(setOnlyReadsMemory(onlyReadsMemory));
76 bool CallSite::doesNotReturn() const {
77 CALLSITE_DELEGATE_GETTER(doesNotReturn());
79 void CallSite::setDoesNotReturn(bool doesNotReturn) {
80 CALLSITE_DELEGATE_SETTER(setDoesNotReturn(doesNotReturn));
82 bool CallSite::doesNotThrow() const {
83 CALLSITE_DELEGATE_GETTER(doesNotThrow());
85 void CallSite::setDoesNotThrow(bool doesNotThrow) {
86 CALLSITE_DELEGATE_SETTER(setDoesNotThrow(doesNotThrow));
89 bool CallSite::hasArgument(const Value *Arg) const {
90 for (arg_iterator AI = this->arg_begin(), E = this->arg_end(); AI != E; ++AI)
96 #undef CALLSITE_DELEGATE_GETTER
97 #undef CALLSITE_DELEGATE_SETTER
99 //===----------------------------------------------------------------------===//
100 // TerminatorInst Class
101 //===----------------------------------------------------------------------===//
103 // Out of line virtual method, so the vtable, etc has a home.
104 TerminatorInst::~TerminatorInst() {
107 //===----------------------------------------------------------------------===//
108 // UnaryInstruction Class
109 //===----------------------------------------------------------------------===//
111 // Out of line virtual method, so the vtable, etc has a home.
112 UnaryInstruction::~UnaryInstruction() {
115 //===----------------------------------------------------------------------===//
117 //===----------------------------------------------------------------------===//
119 /// areInvalidOperands - Return a string if the specified operands are invalid
120 /// for a select operation, otherwise return null.
121 const char *SelectInst::areInvalidOperands(Value *Op0, Value *Op1, Value *Op2) {
122 if (Op1->getType() != Op2->getType())
123 return "both values to select must have same type";
125 if (const VectorType *VT = dyn_cast<VectorType>(Op0->getType())) {
127 if (VT->getElementType() != Type::Int1Ty)
128 return "vector select condition element type must be i1";
129 const VectorType *ET = dyn_cast<VectorType>(Op1->getType());
131 return "selected values for vector select must be vectors";
132 if (ET->getNumElements() != VT->getNumElements())
133 return "vector select requires selected vectors to have "
134 "the same vector length as select condition";
135 } else if (Op0->getType() != Type::Int1Ty) {
136 return "select condition must be i1 or <n x i1>";
142 //===----------------------------------------------------------------------===//
144 //===----------------------------------------------------------------------===//
146 PHINode::PHINode(const PHINode &PN)
147 : Instruction(PN.getType(), Instruction::PHI,
148 allocHungoffUses(PN.getNumOperands()), PN.getNumOperands()),
149 ReservedSpace(PN.getNumOperands()) {
150 Use *OL = OperandList;
151 for (unsigned i = 0, e = PN.getNumOperands(); i != e; i+=2) {
152 OL[i] = PN.getOperand(i);
153 OL[i+1] = PN.getOperand(i+1);
157 PHINode::~PHINode() {
159 dropHungoffUses(OperandList);
162 // removeIncomingValue - Remove an incoming value. This is useful if a
163 // predecessor basic block is deleted.
164 Value *PHINode::removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty) {
165 unsigned NumOps = getNumOperands();
166 Use *OL = OperandList;
167 assert(Idx*2 < NumOps && "BB not in PHI node!");
168 Value *Removed = OL[Idx*2];
170 // Move everything after this operand down.
172 // FIXME: we could just swap with the end of the list, then erase. However,
173 // client might not expect this to happen. The code as it is thrashes the
174 // use/def lists, which is kinda lame.
175 for (unsigned i = (Idx+1)*2; i != NumOps; i += 2) {
180 // Nuke the last value.
182 OL[NumOps-2+1].set(0);
183 NumOperands = NumOps-2;
185 // If the PHI node is dead, because it has zero entries, nuke it now.
186 if (NumOps == 2 && DeletePHIIfEmpty) {
187 // If anyone is using this PHI, make them use a dummy value instead...
188 replaceAllUsesWith(UndefValue::get(getType()));
194 /// resizeOperands - resize operands - This adjusts the length of the operands
195 /// list according to the following behavior:
196 /// 1. If NumOps == 0, grow the operand list in response to a push_back style
197 /// of operation. This grows the number of ops by 1.5 times.
198 /// 2. If NumOps > NumOperands, reserve space for NumOps operands.
199 /// 3. If NumOps == NumOperands, trim the reserved space.
201 void PHINode::resizeOperands(unsigned NumOps) {
202 unsigned e = getNumOperands();
205 if (NumOps < 4) NumOps = 4; // 4 op PHI nodes are VERY common.
206 } else if (NumOps*2 > NumOperands) {
208 if (ReservedSpace >= NumOps) return;
209 } else if (NumOps == NumOperands) {
210 if (ReservedSpace == NumOps) return;
215 ReservedSpace = NumOps;
216 Use *OldOps = OperandList;
217 Use *NewOps = allocHungoffUses(NumOps);
218 std::copy(OldOps, OldOps + e, NewOps);
219 OperandList = NewOps;
220 if (OldOps) Use::zap(OldOps, OldOps + e, true);
223 /// hasConstantValue - If the specified PHI node always merges together the same
224 /// value, return the value, otherwise return null.
226 Value *PHINode::hasConstantValue(bool AllowNonDominatingInstruction) const {
227 // If the PHI node only has one incoming value, eliminate the PHI node...
228 if (getNumIncomingValues() == 1) {
229 if (getIncomingValue(0) != this) // not X = phi X
230 return getIncomingValue(0);
232 return UndefValue::get(getType()); // Self cycle is dead.
235 // Otherwise if all of the incoming values are the same for the PHI, replace
236 // the PHI node with the incoming value.
239 bool HasUndefInput = false;
240 for (unsigned i = 0, e = getNumIncomingValues(); i != e; ++i)
241 if (isa<UndefValue>(getIncomingValue(i))) {
242 HasUndefInput = true;
243 } else if (getIncomingValue(i) != this) { // Not the PHI node itself...
244 if (InVal && getIncomingValue(i) != InVal)
245 return 0; // Not the same, bail out.
247 InVal = getIncomingValue(i);
250 // The only case that could cause InVal to be null is if we have a PHI node
251 // that only has entries for itself. In this case, there is no entry into the
252 // loop, so kill the PHI.
254 if (InVal == 0) InVal = UndefValue::get(getType());
256 // If we have a PHI node like phi(X, undef, X), where X is defined by some
257 // instruction, we cannot always return X as the result of the PHI node. Only
258 // do this if X is not an instruction (thus it must dominate the PHI block),
259 // or if the client is prepared to deal with this possibility.
260 if (HasUndefInput && !AllowNonDominatingInstruction)
261 if (Instruction *IV = dyn_cast<Instruction>(InVal))
262 // If it's in the entry block, it dominates everything.
263 if (IV->getParent() != &IV->getParent()->getParent()->getEntryBlock() ||
265 return 0; // Cannot guarantee that InVal dominates this PHINode.
267 // All of the incoming values are the same, return the value now.
272 //===----------------------------------------------------------------------===//
273 // CallInst Implementation
274 //===----------------------------------------------------------------------===//
276 CallInst::~CallInst() {
279 void CallInst::init(Value *Func, Value* const *Params, unsigned NumParams) {
280 assert(NumOperands == NumParams+1 && "NumOperands not set up?");
281 Use *OL = OperandList;
284 const FunctionType *FTy =
285 cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
286 FTy = FTy; // silence warning.
288 assert((NumParams == FTy->getNumParams() ||
289 (FTy->isVarArg() && NumParams > FTy->getNumParams())) &&
290 "Calling a function with bad signature!");
291 for (unsigned i = 0; i != NumParams; ++i) {
292 assert((i >= FTy->getNumParams() ||
293 FTy->getParamType(i) == Params[i]->getType()) &&
294 "Calling a function with a bad signature!");
299 void CallInst::init(Value *Func, Value *Actual1, Value *Actual2) {
300 assert(NumOperands == 3 && "NumOperands not set up?");
301 Use *OL = OperandList;
306 const FunctionType *FTy =
307 cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
308 FTy = FTy; // silence warning.
310 assert((FTy->getNumParams() == 2 ||
311 (FTy->isVarArg() && FTy->getNumParams() < 2)) &&
312 "Calling a function with bad signature");
313 assert((0 >= FTy->getNumParams() ||
314 FTy->getParamType(0) == Actual1->getType()) &&
315 "Calling a function with a bad signature!");
316 assert((1 >= FTy->getNumParams() ||
317 FTy->getParamType(1) == Actual2->getType()) &&
318 "Calling a function with a bad signature!");
321 void CallInst::init(Value *Func, Value *Actual) {
322 assert(NumOperands == 2 && "NumOperands not set up?");
323 Use *OL = OperandList;
327 const FunctionType *FTy =
328 cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
329 FTy = FTy; // silence warning.
331 assert((FTy->getNumParams() == 1 ||
332 (FTy->isVarArg() && FTy->getNumParams() == 0)) &&
333 "Calling a function with bad signature");
334 assert((0 == FTy->getNumParams() ||
335 FTy->getParamType(0) == Actual->getType()) &&
336 "Calling a function with a bad signature!");
339 void CallInst::init(Value *Func) {
340 assert(NumOperands == 1 && "NumOperands not set up?");
341 Use *OL = OperandList;
344 const FunctionType *FTy =
345 cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
346 FTy = FTy; // silence warning.
348 assert(FTy->getNumParams() == 0 && "Calling a function with bad signature");
351 CallInst::CallInst(Value *Func, Value* Actual, const std::string &Name,
352 Instruction *InsertBefore)
353 : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
354 ->getElementType())->getReturnType(),
356 OperandTraits<CallInst>::op_end(this) - 2,
362 CallInst::CallInst(Value *Func, Value* Actual, const std::string &Name,
363 BasicBlock *InsertAtEnd)
364 : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
365 ->getElementType())->getReturnType(),
367 OperandTraits<CallInst>::op_end(this) - 2,
372 CallInst::CallInst(Value *Func, const std::string &Name,
373 Instruction *InsertBefore)
374 : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
375 ->getElementType())->getReturnType(),
377 OperandTraits<CallInst>::op_end(this) - 1,
383 CallInst::CallInst(Value *Func, const std::string &Name,
384 BasicBlock *InsertAtEnd)
385 : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
386 ->getElementType())->getReturnType(),
388 OperandTraits<CallInst>::op_end(this) - 1,
394 CallInst::CallInst(const CallInst &CI)
395 : Instruction(CI.getType(), Instruction::Call,
396 OperandTraits<CallInst>::op_end(this) - CI.getNumOperands(),
397 CI.getNumOperands()) {
398 setAttributes(CI.getAttributes());
399 SubclassData = CI.SubclassData;
400 Use *OL = OperandList;
401 Use *InOL = CI.OperandList;
402 for (unsigned i = 0, e = CI.getNumOperands(); i != e; ++i)
406 void CallInst::addAttribute(unsigned i, Attributes attr) {
407 AttrListPtr PAL = getAttributes();
408 PAL = PAL.addAttr(i, attr);
412 void CallInst::removeAttribute(unsigned i, Attributes attr) {
413 AttrListPtr PAL = getAttributes();
414 PAL = PAL.removeAttr(i, attr);
418 bool CallInst::paramHasAttr(unsigned i, Attributes attr) const {
419 if (AttributeList.paramHasAttr(i, attr))
421 if (const Function *F = getCalledFunction())
422 return F->paramHasAttr(i, attr);
427 //===----------------------------------------------------------------------===//
428 // InvokeInst Implementation
429 //===----------------------------------------------------------------------===//
431 void InvokeInst::init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
432 Value* const *Args, unsigned NumArgs) {
433 assert(NumOperands == 3+NumArgs && "NumOperands not set up?");
434 Use *OL = OperandList;
438 const FunctionType *FTy =
439 cast<FunctionType>(cast<PointerType>(Fn->getType())->getElementType());
440 FTy = FTy; // silence warning.
442 assert(((NumArgs == FTy->getNumParams()) ||
443 (FTy->isVarArg() && NumArgs > FTy->getNumParams())) &&
444 "Calling a function with bad signature");
446 for (unsigned i = 0, e = NumArgs; i != e; i++) {
447 assert((i >= FTy->getNumParams() ||
448 FTy->getParamType(i) == Args[i]->getType()) &&
449 "Invoking a function with a bad signature!");
455 InvokeInst::InvokeInst(const InvokeInst &II)
456 : TerminatorInst(II.getType(), Instruction::Invoke,
457 OperandTraits<InvokeInst>::op_end(this)
458 - II.getNumOperands(),
459 II.getNumOperands()) {
460 setAttributes(II.getAttributes());
461 SubclassData = II.SubclassData;
462 Use *OL = OperandList, *InOL = II.OperandList;
463 for (unsigned i = 0, e = II.getNumOperands(); i != e; ++i)
467 BasicBlock *InvokeInst::getSuccessorV(unsigned idx) const {
468 return getSuccessor(idx);
470 unsigned InvokeInst::getNumSuccessorsV() const {
471 return getNumSuccessors();
473 void InvokeInst::setSuccessorV(unsigned idx, BasicBlock *B) {
474 return setSuccessor(idx, B);
477 bool InvokeInst::paramHasAttr(unsigned i, Attributes attr) const {
478 if (AttributeList.paramHasAttr(i, attr))
480 if (const Function *F = getCalledFunction())
481 return F->paramHasAttr(i, attr);
485 void InvokeInst::addAttribute(unsigned i, Attributes attr) {
486 AttrListPtr PAL = getAttributes();
487 PAL = PAL.addAttr(i, attr);
491 void InvokeInst::removeAttribute(unsigned i, Attributes attr) {
492 AttrListPtr PAL = getAttributes();
493 PAL = PAL.removeAttr(i, attr);
498 //===----------------------------------------------------------------------===//
499 // ReturnInst Implementation
500 //===----------------------------------------------------------------------===//
502 ReturnInst::ReturnInst(const ReturnInst &RI)
503 : TerminatorInst(Type::VoidTy, Instruction::Ret,
504 OperandTraits<ReturnInst>::op_end(this) -
506 RI.getNumOperands()) {
507 if (RI.getNumOperands())
508 Op<0>() = RI.Op<0>();
511 ReturnInst::ReturnInst(Value *retVal, Instruction *InsertBefore)
512 : TerminatorInst(Type::VoidTy, Instruction::Ret,
513 OperandTraits<ReturnInst>::op_end(this) - !!retVal, !!retVal,
518 ReturnInst::ReturnInst(Value *retVal, BasicBlock *InsertAtEnd)
519 : TerminatorInst(Type::VoidTy, Instruction::Ret,
520 OperandTraits<ReturnInst>::op_end(this) - !!retVal, !!retVal,
525 ReturnInst::ReturnInst(BasicBlock *InsertAtEnd)
526 : TerminatorInst(Type::VoidTy, Instruction::Ret,
527 OperandTraits<ReturnInst>::op_end(this), 0, InsertAtEnd) {
530 unsigned ReturnInst::getNumSuccessorsV() const {
531 return getNumSuccessors();
534 /// Out-of-line ReturnInst method, put here so the C++ compiler can choose to
535 /// emit the vtable for the class in this translation unit.
536 void ReturnInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) {
537 assert(0 && "ReturnInst has no successors!");
540 BasicBlock *ReturnInst::getSuccessorV(unsigned idx) const {
541 assert(0 && "ReturnInst has no successors!");
546 ReturnInst::~ReturnInst() {
549 //===----------------------------------------------------------------------===//
550 // UnwindInst Implementation
551 //===----------------------------------------------------------------------===//
553 UnwindInst::UnwindInst(Instruction *InsertBefore)
554 : TerminatorInst(Type::VoidTy, Instruction::Unwind, 0, 0, InsertBefore) {
556 UnwindInst::UnwindInst(BasicBlock *InsertAtEnd)
557 : TerminatorInst(Type::VoidTy, Instruction::Unwind, 0, 0, InsertAtEnd) {
561 unsigned UnwindInst::getNumSuccessorsV() const {
562 return getNumSuccessors();
565 void UnwindInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) {
566 assert(0 && "UnwindInst has no successors!");
569 BasicBlock *UnwindInst::getSuccessorV(unsigned idx) const {
570 assert(0 && "UnwindInst has no successors!");
575 //===----------------------------------------------------------------------===//
576 // UnreachableInst Implementation
577 //===----------------------------------------------------------------------===//
579 UnreachableInst::UnreachableInst(Instruction *InsertBefore)
580 : TerminatorInst(Type::VoidTy, Instruction::Unreachable, 0, 0, InsertBefore) {
582 UnreachableInst::UnreachableInst(BasicBlock *InsertAtEnd)
583 : TerminatorInst(Type::VoidTy, Instruction::Unreachable, 0, 0, InsertAtEnd) {
586 unsigned UnreachableInst::getNumSuccessorsV() const {
587 return getNumSuccessors();
590 void UnreachableInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) {
591 assert(0 && "UnwindInst has no successors!");
594 BasicBlock *UnreachableInst::getSuccessorV(unsigned idx) const {
595 assert(0 && "UnwindInst has no successors!");
600 //===----------------------------------------------------------------------===//
601 // BranchInst Implementation
602 //===----------------------------------------------------------------------===//
604 void BranchInst::AssertOK() {
606 assert(getCondition()->getType() == Type::Int1Ty &&
607 "May only branch on boolean predicates!");
610 BranchInst::BranchInst(BasicBlock *IfTrue, Instruction *InsertBefore)
611 : TerminatorInst(Type::VoidTy, Instruction::Br,
612 OperandTraits<BranchInst>::op_end(this) - 1,
614 assert(IfTrue != 0 && "Branch destination may not be null!");
617 BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
618 Instruction *InsertBefore)
619 : TerminatorInst(Type::VoidTy, Instruction::Br,
620 OperandTraits<BranchInst>::op_end(this) - 3,
630 BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd)
631 : TerminatorInst(Type::VoidTy, Instruction::Br,
632 OperandTraits<BranchInst>::op_end(this) - 1,
634 assert(IfTrue != 0 && "Branch destination may not be null!");
638 BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
639 BasicBlock *InsertAtEnd)
640 : TerminatorInst(Type::VoidTy, Instruction::Br,
641 OperandTraits<BranchInst>::op_end(this) - 3,
652 BranchInst::BranchInst(const BranchInst &BI) :
653 TerminatorInst(Type::VoidTy, Instruction::Br,
654 OperandTraits<BranchInst>::op_end(this) - BI.getNumOperands(),
655 BI.getNumOperands()) {
656 Op<-1>() = BI.Op<-1>();
657 if (BI.getNumOperands() != 1) {
658 assert(BI.getNumOperands() == 3 && "BR can have 1 or 3 operands!");
659 Op<-3>() = BI.Op<-3>();
660 Op<-2>() = BI.Op<-2>();
665 Use* Use::getPrefix() {
666 PointerIntPair<Use**, 2, PrevPtrTag> &PotentialPrefix(this[-1].Prev);
667 if (PotentialPrefix.getOpaqueValue())
670 return reinterpret_cast<Use*>((char*)&PotentialPrefix + 1);
673 BranchInst::~BranchInst() {
674 if (NumOperands == 1) {
675 if (Use *Prefix = OperandList->getPrefix()) {
678 // mark OperandList to have a special value for scrutiny
679 // by baseclass destructors and operator delete
680 OperandList = Prefix;
683 OperandList = op_begin();
689 BasicBlock *BranchInst::getSuccessorV(unsigned idx) const {
690 return getSuccessor(idx);
692 unsigned BranchInst::getNumSuccessorsV() const {
693 return getNumSuccessors();
695 void BranchInst::setSuccessorV(unsigned idx, BasicBlock *B) {
696 setSuccessor(idx, B);
700 //===----------------------------------------------------------------------===//
701 // AllocationInst Implementation
702 //===----------------------------------------------------------------------===//
704 static Value *getAISize(Value *Amt) {
706 Amt = ConstantInt::get(Type::Int32Ty, 1);
708 assert(!isa<BasicBlock>(Amt) &&
709 "Passed basic block into allocation size parameter! Use other ctor");
710 assert(Amt->getType() == Type::Int32Ty &&
711 "Malloc/Allocation array size is not a 32-bit integer!");
716 AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
717 unsigned Align, const std::string &Name,
718 Instruction *InsertBefore)
719 : UnaryInstruction(PointerType::getUnqual(Ty), iTy, getAISize(ArraySize),
722 assert(Ty != Type::VoidTy && "Cannot allocate void!");
726 AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
727 unsigned Align, const std::string &Name,
728 BasicBlock *InsertAtEnd)
729 : UnaryInstruction(PointerType::getUnqual(Ty), iTy, getAISize(ArraySize),
732 assert(Ty != Type::VoidTy && "Cannot allocate void!");
736 // Out of line virtual method, so the vtable, etc has a home.
737 AllocationInst::~AllocationInst() {
740 void AllocationInst::setAlignment(unsigned Align) {
741 assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
742 SubclassData = Log2_32(Align) + 1;
743 assert(getAlignment() == Align && "Alignment representation error!");
746 bool AllocationInst::isArrayAllocation() const {
747 if (ConstantInt *CI = dyn_cast<ConstantInt>(getOperand(0)))
748 return CI->getZExtValue() != 1;
752 const Type *AllocationInst::getAllocatedType() const {
753 return getType()->getElementType();
756 AllocaInst::AllocaInst(const AllocaInst &AI)
757 : AllocationInst(AI.getType()->getElementType(), (Value*)AI.getOperand(0),
758 Instruction::Alloca, AI.getAlignment()) {
761 /// isStaticAlloca - Return true if this alloca is in the entry block of the
762 /// function and is a constant size. If so, the code generator will fold it
763 /// into the prolog/epilog code, so it is basically free.
764 bool AllocaInst::isStaticAlloca() const {
765 // Must be constant size.
766 if (!isa<ConstantInt>(getArraySize())) return false;
768 // Must be in the entry block.
769 const BasicBlock *Parent = getParent();
770 return Parent == &Parent->getParent()->front();
773 MallocInst::MallocInst(const MallocInst &MI)
774 : AllocationInst(MI.getType()->getElementType(), (Value*)MI.getOperand(0),
775 Instruction::Malloc, MI.getAlignment()) {
778 //===----------------------------------------------------------------------===//
779 // FreeInst Implementation
780 //===----------------------------------------------------------------------===//
782 void FreeInst::AssertOK() {
783 assert(isa<PointerType>(getOperand(0)->getType()) &&
784 "Can not free something of nonpointer type!");
787 FreeInst::FreeInst(Value *Ptr, Instruction *InsertBefore)
788 : UnaryInstruction(Type::VoidTy, Free, Ptr, InsertBefore) {
792 FreeInst::FreeInst(Value *Ptr, BasicBlock *InsertAtEnd)
793 : UnaryInstruction(Type::VoidTy, Free, Ptr, InsertAtEnd) {
798 //===----------------------------------------------------------------------===//
799 // LoadInst Implementation
800 //===----------------------------------------------------------------------===//
802 void LoadInst::AssertOK() {
803 assert(isa<PointerType>(getOperand(0)->getType()) &&
804 "Ptr must have pointer type.");
807 LoadInst::LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBef)
808 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
809 Load, Ptr, InsertBef) {
816 LoadInst::LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAE)
817 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
818 Load, Ptr, InsertAE) {
825 LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
826 Instruction *InsertBef)
827 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
828 Load, Ptr, InsertBef) {
829 setVolatile(isVolatile);
835 LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
836 unsigned Align, Instruction *InsertBef)
837 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
838 Load, Ptr, InsertBef) {
839 setVolatile(isVolatile);
845 LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
846 unsigned Align, BasicBlock *InsertAE)
847 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
848 Load, Ptr, InsertAE) {
849 setVolatile(isVolatile);
855 LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
856 BasicBlock *InsertAE)
857 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
858 Load, Ptr, InsertAE) {
859 setVolatile(isVolatile);
867 LoadInst::LoadInst(Value *Ptr, const char *Name, Instruction *InsertBef)
868 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
869 Load, Ptr, InsertBef) {
873 if (Name && Name[0]) setName(Name);
876 LoadInst::LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAE)
877 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
878 Load, Ptr, InsertAE) {
882 if (Name && Name[0]) setName(Name);
885 LoadInst::LoadInst(Value *Ptr, const char *Name, bool isVolatile,
886 Instruction *InsertBef)
887 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
888 Load, Ptr, InsertBef) {
889 setVolatile(isVolatile);
892 if (Name && Name[0]) setName(Name);
895 LoadInst::LoadInst(Value *Ptr, const char *Name, bool isVolatile,
896 BasicBlock *InsertAE)
897 : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
898 Load, Ptr, InsertAE) {
899 setVolatile(isVolatile);
902 if (Name && Name[0]) setName(Name);
905 void LoadInst::setAlignment(unsigned Align) {
906 assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
907 SubclassData = (SubclassData & 1) | ((Log2_32(Align)+1)<<1);
910 //===----------------------------------------------------------------------===//
911 // StoreInst Implementation
912 //===----------------------------------------------------------------------===//
914 void StoreInst::AssertOK() {
915 assert(getOperand(0) && getOperand(1) && "Both operands must be non-null!");
916 assert(isa<PointerType>(getOperand(1)->getType()) &&
917 "Ptr must have pointer type!");
918 assert(getOperand(0)->getType() ==
919 cast<PointerType>(getOperand(1)->getType())->getElementType()
920 && "Ptr must be a pointer to Val type!");
924 StoreInst::StoreInst(Value *val, Value *addr, Instruction *InsertBefore)
925 : Instruction(Type::VoidTy, Store,
926 OperandTraits<StoreInst>::op_begin(this),
927 OperandTraits<StoreInst>::operands(this),
936 StoreInst::StoreInst(Value *val, Value *addr, BasicBlock *InsertAtEnd)
937 : Instruction(Type::VoidTy, Store,
938 OperandTraits<StoreInst>::op_begin(this),
939 OperandTraits<StoreInst>::operands(this),
948 StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
949 Instruction *InsertBefore)
950 : Instruction(Type::VoidTy, Store,
951 OperandTraits<StoreInst>::op_begin(this),
952 OperandTraits<StoreInst>::operands(this),
956 setVolatile(isVolatile);
961 StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
962 unsigned Align, Instruction *InsertBefore)
963 : Instruction(Type::VoidTy, Store,
964 OperandTraits<StoreInst>::op_begin(this),
965 OperandTraits<StoreInst>::operands(this),
969 setVolatile(isVolatile);
974 StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
975 unsigned Align, BasicBlock *InsertAtEnd)
976 : Instruction(Type::VoidTy, Store,
977 OperandTraits<StoreInst>::op_begin(this),
978 OperandTraits<StoreInst>::operands(this),
982 setVolatile(isVolatile);
987 StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
988 BasicBlock *InsertAtEnd)
989 : Instruction(Type::VoidTy, Store,
990 OperandTraits<StoreInst>::op_begin(this),
991 OperandTraits<StoreInst>::operands(this),
995 setVolatile(isVolatile);
1000 void StoreInst::setAlignment(unsigned Align) {
1001 assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
1002 SubclassData = (SubclassData & 1) | ((Log2_32(Align)+1)<<1);
1005 //===----------------------------------------------------------------------===//
1006 // GetElementPtrInst Implementation
1007 //===----------------------------------------------------------------------===//
1009 static unsigned retrieveAddrSpace(const Value *Val) {
1010 return cast<PointerType>(Val->getType())->getAddressSpace();
1013 void GetElementPtrInst::init(Value *Ptr, Value* const *Idx, unsigned NumIdx,
1014 const std::string &Name) {
1015 assert(NumOperands == 1+NumIdx && "NumOperands not initialized?");
1016 Use *OL = OperandList;
1019 for (unsigned i = 0; i != NumIdx; ++i)
1025 void GetElementPtrInst::init(Value *Ptr, Value *Idx, const std::string &Name) {
1026 assert(NumOperands == 2 && "NumOperands not initialized?");
1027 Use *OL = OperandList;
1034 GetElementPtrInst::GetElementPtrInst(const GetElementPtrInst &GEPI)
1035 : Instruction(GEPI.getType(), GetElementPtr,
1036 OperandTraits<GetElementPtrInst>::op_end(this)
1037 - GEPI.getNumOperands(),
1038 GEPI.getNumOperands()) {
1039 Use *OL = OperandList;
1040 Use *GEPIOL = GEPI.OperandList;
1041 for (unsigned i = 0, E = NumOperands; i != E; ++i)
1045 GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx,
1046 const std::string &Name, Instruction *InBe)
1047 : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(),Idx)),
1048 retrieveAddrSpace(Ptr)),
1050 OperandTraits<GetElementPtrInst>::op_end(this) - 2,
1052 init(Ptr, Idx, Name);
1055 GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx,
1056 const std::string &Name, BasicBlock *IAE)
1057 : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(),Idx)),
1058 retrieveAddrSpace(Ptr)),
1060 OperandTraits<GetElementPtrInst>::op_end(this) - 2,
1062 init(Ptr, Idx, Name);
1065 /// getIndexedType - Returns the type of the element that would be accessed with
1066 /// a gep instruction with the specified parameters.
1068 /// The Idxs pointer should point to a continuous piece of memory containing the
1069 /// indices, either as Value* or uint64_t.
1071 /// A null type is returned if the indices are invalid for the specified
1074 template <typename IndexTy>
1075 static const Type* getIndexedTypeInternal(const Type *Ptr, IndexTy const *Idxs,
1077 const PointerType *PTy = dyn_cast<PointerType>(Ptr);
1078 if (!PTy) return 0; // Type isn't a pointer type!
1079 const Type *Agg = PTy->getElementType();
1081 // Handle the special case of the empty set index set, which is always valid.
1085 // If there is at least one index, the top level type must be sized, otherwise
1086 // it cannot be 'stepped over'. We explicitly allow abstract types (those
1087 // that contain opaque types) under the assumption that it will be resolved to
1088 // a sane type later.
1089 if (!Agg->isSized() && !Agg->isAbstract())
1092 unsigned CurIdx = 1;
1093 for (; CurIdx != NumIdx; ++CurIdx) {
1094 const CompositeType *CT = dyn_cast<CompositeType>(Agg);
1095 if (!CT || isa<PointerType>(CT)) return 0;
1096 IndexTy Index = Idxs[CurIdx];
1097 if (!CT->indexValid(Index)) return 0;
1098 Agg = CT->getTypeAtIndex(Index);
1100 // If the new type forwards to another type, then it is in the middle
1101 // of being refined to another type (and hence, may have dropped all
1102 // references to what it was using before). So, use the new forwarded
1104 if (const Type *Ty = Agg->getForwardedType())
1107 return CurIdx == NumIdx ? Agg : 0;
1110 const Type* GetElementPtrInst::getIndexedType(const Type *Ptr,
1113 return getIndexedTypeInternal(Ptr, Idxs, NumIdx);
1116 const Type* GetElementPtrInst::getIndexedType(const Type *Ptr,
1117 uint64_t const *Idxs,
1119 return getIndexedTypeInternal(Ptr, Idxs, NumIdx);
1122 const Type* GetElementPtrInst::getIndexedType(const Type *Ptr, Value *Idx) {
1123 const PointerType *PTy = dyn_cast<PointerType>(Ptr);
1124 if (!PTy) return 0; // Type isn't a pointer type!
1126 // Check the pointer index.
1127 if (!PTy->indexValid(Idx)) return 0;
1129 return PTy->getElementType();
1133 /// hasAllZeroIndices - Return true if all of the indices of this GEP are
1134 /// zeros. If so, the result pointer and the first operand have the same
1135 /// value, just potentially different types.
1136 bool GetElementPtrInst::hasAllZeroIndices() const {
1137 for (unsigned i = 1, e = getNumOperands(); i != e; ++i) {
1138 if (ConstantInt *CI = dyn_cast<ConstantInt>(getOperand(i))) {
1139 if (!CI->isZero()) return false;
1147 /// hasAllConstantIndices - Return true if all of the indices of this GEP are
1148 /// constant integers. If so, the result pointer and the first operand have
1149 /// a constant offset between them.
1150 bool GetElementPtrInst::hasAllConstantIndices() const {
1151 for (unsigned i = 1, e = getNumOperands(); i != e; ++i) {
1152 if (!isa<ConstantInt>(getOperand(i)))
1159 //===----------------------------------------------------------------------===//
1160 // ExtractElementInst Implementation
1161 //===----------------------------------------------------------------------===//
1163 ExtractElementInst::ExtractElementInst(Value *Val, Value *Index,
1164 const std::string &Name,
1165 Instruction *InsertBef)
1166 : Instruction(cast<VectorType>(Val->getType())->getElementType(),
1168 OperandTraits<ExtractElementInst>::op_begin(this),
1170 assert(isValidOperands(Val, Index) &&
1171 "Invalid extractelement instruction operands!");
1177 ExtractElementInst::ExtractElementInst(Value *Val, unsigned IndexV,
1178 const std::string &Name,
1179 Instruction *InsertBef)
1180 : Instruction(cast<VectorType>(Val->getType())->getElementType(),
1182 OperandTraits<ExtractElementInst>::op_begin(this),
1184 Constant *Index = ConstantInt::get(Type::Int32Ty, IndexV);
1185 assert(isValidOperands(Val, Index) &&
1186 "Invalid extractelement instruction operands!");
1193 ExtractElementInst::ExtractElementInst(Value *Val, Value *Index,
1194 const std::string &Name,
1195 BasicBlock *InsertAE)
1196 : Instruction(cast<VectorType>(Val->getType())->getElementType(),
1198 OperandTraits<ExtractElementInst>::op_begin(this),
1200 assert(isValidOperands(Val, Index) &&
1201 "Invalid extractelement instruction operands!");
1208 ExtractElementInst::ExtractElementInst(Value *Val, unsigned IndexV,
1209 const std::string &Name,
1210 BasicBlock *InsertAE)
1211 : Instruction(cast<VectorType>(Val->getType())->getElementType(),
1213 OperandTraits<ExtractElementInst>::op_begin(this),
1215 Constant *Index = ConstantInt::get(Type::Int32Ty, IndexV);
1216 assert(isValidOperands(Val, Index) &&
1217 "Invalid extractelement instruction operands!");
1225 bool ExtractElementInst::isValidOperands(const Value *Val, const Value *Index) {
1226 if (!isa<VectorType>(Val->getType()) || Index->getType() != Type::Int32Ty)
1232 //===----------------------------------------------------------------------===//
1233 // InsertElementInst Implementation
1234 //===----------------------------------------------------------------------===//
1236 InsertElementInst::InsertElementInst(const InsertElementInst &IE)
1237 : Instruction(IE.getType(), InsertElement,
1238 OperandTraits<InsertElementInst>::op_begin(this), 3) {
1239 Op<0>() = IE.Op<0>();
1240 Op<1>() = IE.Op<1>();
1241 Op<2>() = IE.Op<2>();
1243 InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, Value *Index,
1244 const std::string &Name,
1245 Instruction *InsertBef)
1246 : Instruction(Vec->getType(), InsertElement,
1247 OperandTraits<InsertElementInst>::op_begin(this),
1249 assert(isValidOperands(Vec, Elt, Index) &&
1250 "Invalid insertelement instruction operands!");
1257 InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, unsigned IndexV,
1258 const std::string &Name,
1259 Instruction *InsertBef)
1260 : Instruction(Vec->getType(), InsertElement,
1261 OperandTraits<InsertElementInst>::op_begin(this),
1263 Constant *Index = ConstantInt::get(Type::Int32Ty, IndexV);
1264 assert(isValidOperands(Vec, Elt, Index) &&
1265 "Invalid insertelement instruction operands!");
1273 InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, Value *Index,
1274 const std::string &Name,
1275 BasicBlock *InsertAE)
1276 : Instruction(Vec->getType(), InsertElement,
1277 OperandTraits<InsertElementInst>::op_begin(this),
1279 assert(isValidOperands(Vec, Elt, Index) &&
1280 "Invalid insertelement instruction operands!");
1288 InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, unsigned IndexV,
1289 const std::string &Name,
1290 BasicBlock *InsertAE)
1291 : Instruction(Vec->getType(), InsertElement,
1292 OperandTraits<InsertElementInst>::op_begin(this),
1294 Constant *Index = ConstantInt::get(Type::Int32Ty, IndexV);
1295 assert(isValidOperands(Vec, Elt, Index) &&
1296 "Invalid insertelement instruction operands!");
1304 bool InsertElementInst::isValidOperands(const Value *Vec, const Value *Elt,
1305 const Value *Index) {
1306 if (!isa<VectorType>(Vec->getType()))
1307 return false; // First operand of insertelement must be vector type.
1309 if (Elt->getType() != cast<VectorType>(Vec->getType())->getElementType())
1310 return false;// Second operand of insertelement must be vector element type.
1312 if (Index->getType() != Type::Int32Ty)
1313 return false; // Third operand of insertelement must be i32.
1318 //===----------------------------------------------------------------------===//
1319 // ShuffleVectorInst Implementation
1320 //===----------------------------------------------------------------------===//
1322 ShuffleVectorInst::ShuffleVectorInst(const ShuffleVectorInst &SV)
1323 : Instruction(SV.getType(), ShuffleVector,
1324 OperandTraits<ShuffleVectorInst>::op_begin(this),
1325 OperandTraits<ShuffleVectorInst>::operands(this)) {
1326 Op<0>() = SV.Op<0>();
1327 Op<1>() = SV.Op<1>();
1328 Op<2>() = SV.Op<2>();
1331 ShuffleVectorInst::ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
1332 const std::string &Name,
1333 Instruction *InsertBefore)
1334 : Instruction(VectorType::get(cast<VectorType>(V1->getType())->getElementType(),
1335 cast<VectorType>(Mask->getType())->getNumElements()),
1337 OperandTraits<ShuffleVectorInst>::op_begin(this),
1338 OperandTraits<ShuffleVectorInst>::operands(this),
1340 assert(isValidOperands(V1, V2, Mask) &&
1341 "Invalid shuffle vector instruction operands!");
1348 ShuffleVectorInst::ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
1349 const std::string &Name,
1350 BasicBlock *InsertAtEnd)
1351 : Instruction(V1->getType(), ShuffleVector,
1352 OperandTraits<ShuffleVectorInst>::op_begin(this),
1353 OperandTraits<ShuffleVectorInst>::operands(this),
1355 assert(isValidOperands(V1, V2, Mask) &&
1356 "Invalid shuffle vector instruction operands!");
1364 bool ShuffleVectorInst::isValidOperands(const Value *V1, const Value *V2,
1365 const Value *Mask) {
1366 if (!isa<VectorType>(V1->getType()) || V1->getType() != V2->getType())
1369 const VectorType *MaskTy = dyn_cast<VectorType>(Mask->getType());
1370 if (!isa<Constant>(Mask) || MaskTy == 0 ||
1371 MaskTy->getElementType() != Type::Int32Ty)
1376 /// getMaskValue - Return the index from the shuffle mask for the specified
1377 /// output result. This is either -1 if the element is undef or a number less
1378 /// than 2*numelements.
1379 int ShuffleVectorInst::getMaskValue(unsigned i) const {
1380 const Constant *Mask = cast<Constant>(getOperand(2));
1381 if (isa<UndefValue>(Mask)) return -1;
1382 if (isa<ConstantAggregateZero>(Mask)) return 0;
1383 const ConstantVector *MaskCV = cast<ConstantVector>(Mask);
1384 assert(i < MaskCV->getNumOperands() && "Index out of range");
1386 if (isa<UndefValue>(MaskCV->getOperand(i)))
1388 return cast<ConstantInt>(MaskCV->getOperand(i))->getZExtValue();
1391 //===----------------------------------------------------------------------===//
1392 // InsertValueInst Class
1393 //===----------------------------------------------------------------------===//
1395 void InsertValueInst::init(Value *Agg, Value *Val, const unsigned *Idx,
1396 unsigned NumIdx, const std::string &Name) {
1397 assert(NumOperands == 2 && "NumOperands not initialized?");
1401 Indices.insert(Indices.end(), Idx, Idx + NumIdx);
1405 void InsertValueInst::init(Value *Agg, Value *Val, unsigned Idx,
1406 const std::string &Name) {
1407 assert(NumOperands == 2 && "NumOperands not initialized?");
1411 Indices.push_back(Idx);
1415 InsertValueInst::InsertValueInst(const InsertValueInst &IVI)
1416 : Instruction(IVI.getType(), InsertValue,
1417 OperandTraits<InsertValueInst>::op_begin(this), 2),
1418 Indices(IVI.Indices) {
1419 Op<0>() = IVI.getOperand(0);
1420 Op<1>() = IVI.getOperand(1);
1423 InsertValueInst::InsertValueInst(Value *Agg,
1426 const std::string &Name,
1427 Instruction *InsertBefore)
1428 : Instruction(Agg->getType(), InsertValue,
1429 OperandTraits<InsertValueInst>::op_begin(this),
1431 init(Agg, Val, Idx, Name);
1434 InsertValueInst::InsertValueInst(Value *Agg,
1437 const std::string &Name,
1438 BasicBlock *InsertAtEnd)
1439 : Instruction(Agg->getType(), InsertValue,
1440 OperandTraits<InsertValueInst>::op_begin(this),
1442 init(Agg, Val, Idx, Name);
1445 //===----------------------------------------------------------------------===//
1446 // ExtractValueInst Class
1447 //===----------------------------------------------------------------------===//
1449 void ExtractValueInst::init(const unsigned *Idx, unsigned NumIdx,
1450 const std::string &Name) {
1451 assert(NumOperands == 1 && "NumOperands not initialized?");
1453 Indices.insert(Indices.end(), Idx, Idx + NumIdx);
1457 void ExtractValueInst::init(unsigned Idx, const std::string &Name) {
1458 assert(NumOperands == 1 && "NumOperands not initialized?");
1460 Indices.push_back(Idx);
1464 ExtractValueInst::ExtractValueInst(const ExtractValueInst &EVI)
1465 : UnaryInstruction(EVI.getType(), ExtractValue, EVI.getOperand(0)),
1466 Indices(EVI.Indices) {
1469 // getIndexedType - Returns the type of the element that would be extracted
1470 // with an extractvalue instruction with the specified parameters.
1472 // A null type is returned if the indices are invalid for the specified
1475 const Type* ExtractValueInst::getIndexedType(const Type *Agg,
1476 const unsigned *Idxs,
1478 unsigned CurIdx = 0;
1479 for (; CurIdx != NumIdx; ++CurIdx) {
1480 const CompositeType *CT = dyn_cast<CompositeType>(Agg);
1481 if (!CT || isa<PointerType>(CT) || isa<VectorType>(CT)) return 0;
1482 unsigned Index = Idxs[CurIdx];
1483 if (!CT->indexValid(Index)) return 0;
1484 Agg = CT->getTypeAtIndex(Index);
1486 // If the new type forwards to another type, then it is in the middle
1487 // of being refined to another type (and hence, may have dropped all
1488 // references to what it was using before). So, use the new forwarded
1490 if (const Type *Ty = Agg->getForwardedType())
1493 return CurIdx == NumIdx ? Agg : 0;
1496 const Type* ExtractValueInst::getIndexedType(const Type *Agg,
1498 return getIndexedType(Agg, &Idx, 1);
1501 //===----------------------------------------------------------------------===//
1502 // BinaryOperator Class
1503 //===----------------------------------------------------------------------===//
1505 /// AdjustIType - Map Add, Sub, and Mul to FAdd, FSub, and FMul when the
1506 /// type is floating-point, to help provide compatibility with an older API.
1508 static BinaryOperator::BinaryOps AdjustIType(BinaryOperator::BinaryOps iType,
1510 // API compatibility: Adjust integer opcodes to floating-point opcodes.
1511 if (Ty->isFPOrFPVector()) {
1512 if (iType == BinaryOperator::Add) iType = BinaryOperator::FAdd;
1513 else if (iType == BinaryOperator::Sub) iType = BinaryOperator::FSub;
1514 else if (iType == BinaryOperator::Mul) iType = BinaryOperator::FMul;
1519 BinaryOperator::BinaryOperator(BinaryOps iType, Value *S1, Value *S2,
1520 const Type *Ty, const std::string &Name,
1521 Instruction *InsertBefore)
1522 : Instruction(Ty, AdjustIType(iType, Ty),
1523 OperandTraits<BinaryOperator>::op_begin(this),
1524 OperandTraits<BinaryOperator>::operands(this),
1528 init(AdjustIType(iType, Ty));
1532 BinaryOperator::BinaryOperator(BinaryOps iType, Value *S1, Value *S2,
1533 const Type *Ty, const std::string &Name,
1534 BasicBlock *InsertAtEnd)
1535 : Instruction(Ty, AdjustIType(iType, Ty),
1536 OperandTraits<BinaryOperator>::op_begin(this),
1537 OperandTraits<BinaryOperator>::operands(this),
1541 init(AdjustIType(iType, Ty));
1546 void BinaryOperator::init(BinaryOps iType) {
1547 Value *LHS = getOperand(0), *RHS = getOperand(1);
1548 LHS = LHS; RHS = RHS; // Silence warnings.
1549 assert(LHS->getType() == RHS->getType() &&
1550 "Binary operator operand types must match!");
1555 assert(getType() == LHS->getType() &&
1556 "Arithmetic operation should return same type as operands!");
1557 assert(getType()->isIntOrIntVector() &&
1558 "Tried to create an integer operation on a non-integer type!");
1560 case FAdd: case FSub:
1562 assert(getType() == LHS->getType() &&
1563 "Arithmetic operation should return same type as operands!");
1564 assert(getType()->isFPOrFPVector() &&
1565 "Tried to create a floating-point operation on a "
1566 "non-floating-point type!");
1570 assert(getType() == LHS->getType() &&
1571 "Arithmetic operation should return same type as operands!");
1572 assert((getType()->isInteger() || (isa<VectorType>(getType()) &&
1573 cast<VectorType>(getType())->getElementType()->isInteger())) &&
1574 "Incorrect operand type (not integer) for S/UDIV");
1577 assert(getType() == LHS->getType() &&
1578 "Arithmetic operation should return same type as operands!");
1579 assert(getType()->isFPOrFPVector() &&
1580 "Incorrect operand type (not floating point) for FDIV");
1584 assert(getType() == LHS->getType() &&
1585 "Arithmetic operation should return same type as operands!");
1586 assert((getType()->isInteger() || (isa<VectorType>(getType()) &&
1587 cast<VectorType>(getType())->getElementType()->isInteger())) &&
1588 "Incorrect operand type (not integer) for S/UREM");
1591 assert(getType() == LHS->getType() &&
1592 "Arithmetic operation should return same type as operands!");
1593 assert(getType()->isFPOrFPVector() &&
1594 "Incorrect operand type (not floating point) for FREM");
1599 assert(getType() == LHS->getType() &&
1600 "Shift operation should return same type as operands!");
1601 assert((getType()->isInteger() ||
1602 (isa<VectorType>(getType()) &&
1603 cast<VectorType>(getType())->getElementType()->isInteger())) &&
1604 "Tried to create a shift operation on a non-integral type!");
1608 assert(getType() == LHS->getType() &&
1609 "Logical operation should return same type as operands!");
1610 assert((getType()->isInteger() ||
1611 (isa<VectorType>(getType()) &&
1612 cast<VectorType>(getType())->getElementType()->isInteger())) &&
1613 "Tried to create a logical operation on a non-integral type!");
1621 BinaryOperator *BinaryOperator::Create(BinaryOps Op, Value *S1, Value *S2,
1622 const std::string &Name,
1623 Instruction *InsertBefore) {
1624 assert(S1->getType() == S2->getType() &&
1625 "Cannot create binary operator with two operands of differing type!");
1626 return new BinaryOperator(Op, S1, S2, S1->getType(), Name, InsertBefore);
1629 BinaryOperator *BinaryOperator::Create(BinaryOps Op, Value *S1, Value *S2,
1630 const std::string &Name,
1631 BasicBlock *InsertAtEnd) {
1632 BinaryOperator *Res = Create(Op, S1, S2, Name);
1633 InsertAtEnd->getInstList().push_back(Res);
1637 BinaryOperator *BinaryOperator::CreateNeg(Value *Op, const std::string &Name,
1638 Instruction *InsertBefore) {
1639 Value *zero = ConstantExpr::getZeroValueForNegationExpr(Op->getType());
1640 return new BinaryOperator(Instruction::Sub,
1642 Op->getType(), Name, InsertBefore);
1645 BinaryOperator *BinaryOperator::CreateNeg(Value *Op, const std::string &Name,
1646 BasicBlock *InsertAtEnd) {
1647 Value *zero = ConstantExpr::getZeroValueForNegationExpr(Op->getType());
1648 return new BinaryOperator(Instruction::Sub,
1650 Op->getType(), Name, InsertAtEnd);
1653 BinaryOperator *BinaryOperator::CreateFNeg(Value *Op, const std::string &Name,
1654 Instruction *InsertBefore) {
1655 Value *zero = ConstantExpr::getZeroValueForNegationExpr(Op->getType());
1656 return new BinaryOperator(Instruction::FSub,
1658 Op->getType(), Name, InsertBefore);
1661 BinaryOperator *BinaryOperator::CreateFNeg(Value *Op, const std::string &Name,
1662 BasicBlock *InsertAtEnd) {
1663 Value *zero = ConstantExpr::getZeroValueForNegationExpr(Op->getType());
1664 return new BinaryOperator(Instruction::FSub,
1666 Op->getType(), Name, InsertAtEnd);
1669 BinaryOperator *BinaryOperator::CreateNot(Value *Op, const std::string &Name,
1670 Instruction *InsertBefore) {
1672 if (const VectorType *PTy = dyn_cast<VectorType>(Op->getType())) {
1673 C = ConstantInt::getAllOnesValue(PTy->getElementType());
1674 C = ConstantVector::get(std::vector<Constant*>(PTy->getNumElements(), C));
1676 C = ConstantInt::getAllOnesValue(Op->getType());
1679 return new BinaryOperator(Instruction::Xor, Op, C,
1680 Op->getType(), Name, InsertBefore);
1683 BinaryOperator *BinaryOperator::CreateNot(Value *Op, const std::string &Name,
1684 BasicBlock *InsertAtEnd) {
1686 if (const VectorType *PTy = dyn_cast<VectorType>(Op->getType())) {
1687 // Create a vector of all ones values.
1688 Constant *Elt = ConstantInt::getAllOnesValue(PTy->getElementType());
1690 ConstantVector::get(std::vector<Constant*>(PTy->getNumElements(), Elt));
1692 AllOnes = ConstantInt::getAllOnesValue(Op->getType());
1695 return new BinaryOperator(Instruction::Xor, Op, AllOnes,
1696 Op->getType(), Name, InsertAtEnd);
1700 // isConstantAllOnes - Helper function for several functions below
1701 static inline bool isConstantAllOnes(const Value *V) {
1702 if (const ConstantInt *CI = dyn_cast<ConstantInt>(V))
1703 return CI->isAllOnesValue();
1704 if (const ConstantVector *CV = dyn_cast<ConstantVector>(V))
1705 return CV->isAllOnesValue();
1709 bool BinaryOperator::isNeg(const Value *V) {
1710 if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V))
1711 if (Bop->getOpcode() == Instruction::Sub)
1712 return Bop->getOperand(0) ==
1713 ConstantExpr::getZeroValueForNegationExpr(Bop->getType());
1717 bool BinaryOperator::isFNeg(const Value *V) {
1718 if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V))
1719 if (Bop->getOpcode() == Instruction::FSub)
1720 return Bop->getOperand(0) ==
1721 ConstantExpr::getZeroValueForNegationExpr(Bop->getType());
1725 bool BinaryOperator::isNot(const Value *V) {
1726 if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V))
1727 return (Bop->getOpcode() == Instruction::Xor &&
1728 (isConstantAllOnes(Bop->getOperand(1)) ||
1729 isConstantAllOnes(Bop->getOperand(0))));
1733 Value *BinaryOperator::getNegArgument(Value *BinOp) {
1734 assert(isNeg(BinOp) && "getNegArgument from non-'neg' instruction!");
1735 return cast<BinaryOperator>(BinOp)->getOperand(1);
1738 const Value *BinaryOperator::getNegArgument(const Value *BinOp) {
1739 return getNegArgument(const_cast<Value*>(BinOp));
1742 Value *BinaryOperator::getFNegArgument(Value *BinOp) {
1743 assert(isFNeg(BinOp) && "getFNegArgument from non-'fneg' instruction!");
1744 return cast<BinaryOperator>(BinOp)->getOperand(1);
1747 const Value *BinaryOperator::getFNegArgument(const Value *BinOp) {
1748 return getFNegArgument(const_cast<Value*>(BinOp));
1751 Value *BinaryOperator::getNotArgument(Value *BinOp) {
1752 assert(isNot(BinOp) && "getNotArgument on non-'not' instruction!");
1753 BinaryOperator *BO = cast<BinaryOperator>(BinOp);
1754 Value *Op0 = BO->getOperand(0);
1755 Value *Op1 = BO->getOperand(1);
1756 if (isConstantAllOnes(Op0)) return Op1;
1758 assert(isConstantAllOnes(Op1));
1762 const Value *BinaryOperator::getNotArgument(const Value *BinOp) {
1763 return getNotArgument(const_cast<Value*>(BinOp));
1767 // swapOperands - Exchange the two operands to this instruction. This
1768 // instruction is safe to use on any binary instruction and does not
1769 // modify the semantics of the instruction. If the instruction is
1770 // order dependent (SetLT f.e.) the opcode is changed.
1772 bool BinaryOperator::swapOperands() {
1773 if (!isCommutative())
1774 return true; // Can't commute operands
1775 Op<0>().swap(Op<1>());
1779 //===----------------------------------------------------------------------===//
1781 //===----------------------------------------------------------------------===//
1783 // Just determine if this cast only deals with integral->integral conversion.
1784 bool CastInst::isIntegerCast() const {
1785 switch (getOpcode()) {
1786 default: return false;
1787 case Instruction::ZExt:
1788 case Instruction::SExt:
1789 case Instruction::Trunc:
1791 case Instruction::BitCast:
1792 return getOperand(0)->getType()->isInteger() && getType()->isInteger();
1796 bool CastInst::isLosslessCast() const {
1797 // Only BitCast can be lossless, exit fast if we're not BitCast
1798 if (getOpcode() != Instruction::BitCast)
1801 // Identity cast is always lossless
1802 const Type* SrcTy = getOperand(0)->getType();
1803 const Type* DstTy = getType();
1807 // Pointer to pointer is always lossless.
1808 if (isa<PointerType>(SrcTy))
1809 return isa<PointerType>(DstTy);
1810 return false; // Other types have no identity values
1813 /// This function determines if the CastInst does not require any bits to be
1814 /// changed in order to effect the cast. Essentially, it identifies cases where
1815 /// no code gen is necessary for the cast, hence the name no-op cast. For
1816 /// example, the following are all no-op casts:
1817 /// # bitcast i32* %x to i8*
1818 /// # bitcast <2 x i32> %x to <4 x i16>
1819 /// # ptrtoint i32* %x to i32 ; on 32-bit plaforms only
1820 /// @brief Determine if a cast is a no-op.
1821 bool CastInst::isNoopCast(const Type *IntPtrTy) const {
1822 switch (getOpcode()) {
1824 assert(!"Invalid CastOp");
1825 case Instruction::Trunc:
1826 case Instruction::ZExt:
1827 case Instruction::SExt:
1828 case Instruction::FPTrunc:
1829 case Instruction::FPExt:
1830 case Instruction::UIToFP:
1831 case Instruction::SIToFP:
1832 case Instruction::FPToUI:
1833 case Instruction::FPToSI:
1834 return false; // These always modify bits
1835 case Instruction::BitCast:
1836 return true; // BitCast never modifies bits.
1837 case Instruction::PtrToInt:
1838 return IntPtrTy->getScalarSizeInBits() ==
1839 getType()->getScalarSizeInBits();
1840 case Instruction::IntToPtr:
1841 return IntPtrTy->getScalarSizeInBits() ==
1842 getOperand(0)->getType()->getScalarSizeInBits();
1846 /// This function determines if a pair of casts can be eliminated and what
1847 /// opcode should be used in the elimination. This assumes that there are two
1848 /// instructions like this:
1849 /// * %F = firstOpcode SrcTy %x to MidTy
1850 /// * %S = secondOpcode MidTy %F to DstTy
1851 /// The function returns a resultOpcode so these two casts can be replaced with:
1852 /// * %Replacement = resultOpcode %SrcTy %x to DstTy
1853 /// If no such cast is permited, the function returns 0.
1854 unsigned CastInst::isEliminableCastPair(
1855 Instruction::CastOps firstOp, Instruction::CastOps secondOp,
1856 const Type *SrcTy, const Type *MidTy, const Type *DstTy, const Type *IntPtrTy)
1858 // Define the 144 possibilities for these two cast instructions. The values
1859 // in this matrix determine what to do in a given situation and select the
1860 // case in the switch below. The rows correspond to firstOp, the columns
1861 // correspond to secondOp. In looking at the table below, keep in mind
1862 // the following cast properties:
1864 // Size Compare Source Destination
1865 // Operator Src ? Size Type Sign Type Sign
1866 // -------- ------------ ------------------- ---------------------
1867 // TRUNC > Integer Any Integral Any
1868 // ZEXT < Integral Unsigned Integer Any
1869 // SEXT < Integral Signed Integer Any
1870 // FPTOUI n/a FloatPt n/a Integral Unsigned
1871 // FPTOSI n/a FloatPt n/a Integral Signed
1872 // UITOFP n/a Integral Unsigned FloatPt n/a
1873 // SITOFP n/a Integral Signed FloatPt n/a
1874 // FPTRUNC > FloatPt n/a FloatPt n/a
1875 // FPEXT < FloatPt n/a FloatPt n/a
1876 // PTRTOINT n/a Pointer n/a Integral Unsigned
1877 // INTTOPTR n/a Integral Unsigned Pointer n/a
1878 // BITCONVERT = FirstClass n/a FirstClass n/a
1880 // NOTE: some transforms are safe, but we consider them to be non-profitable.
1881 // For example, we could merge "fptoui double to i32" + "zext i32 to i64",
1882 // into "fptoui double to i64", but this loses information about the range
1883 // of the produced value (we no longer know the top-part is all zeros).
1884 // Further this conversion is often much more expensive for typical hardware,
1885 // and causes issues when building libgcc. We disallow fptosi+sext for the
1887 const unsigned numCastOps =
1888 Instruction::CastOpsEnd - Instruction::CastOpsBegin;
1889 static const uint8_t CastResults[numCastOps][numCastOps] = {
1890 // T F F U S F F P I B -+
1891 // R Z S P P I I T P 2 N T |
1892 // U E E 2 2 2 2 R E I T C +- secondOp
1893 // N X X U S F F N X N 2 V |
1894 // C T T I I P P C T T P T -+
1895 { 1, 0, 0,99,99, 0, 0,99,99,99, 0, 3 }, // Trunc -+
1896 { 8, 1, 9,99,99, 2, 0,99,99,99, 2, 3 }, // ZExt |
1897 { 8, 0, 1,99,99, 0, 2,99,99,99, 0, 3 }, // SExt |
1898 { 0, 0, 0,99,99, 0, 0,99,99,99, 0, 3 }, // FPToUI |
1899 { 0, 0, 0,99,99, 0, 0,99,99,99, 0, 3 }, // FPToSI |
1900 { 99,99,99, 0, 0,99,99, 0, 0,99,99, 4 }, // UIToFP +- firstOp
1901 { 99,99,99, 0, 0,99,99, 0, 0,99,99, 4 }, // SIToFP |
1902 { 99,99,99, 0, 0,99,99, 1, 0,99,99, 4 }, // FPTrunc |
1903 { 99,99,99, 2, 2,99,99,10, 2,99,99, 4 }, // FPExt |
1904 { 1, 0, 0,99,99, 0, 0,99,99,99, 7, 3 }, // PtrToInt |
1905 { 99,99,99,99,99,99,99,99,99,13,99,12 }, // IntToPtr |
1906 { 5, 5, 5, 6, 6, 5, 5, 6, 6,11, 5, 1 }, // BitCast -+
1909 int ElimCase = CastResults[firstOp-Instruction::CastOpsBegin]
1910 [secondOp-Instruction::CastOpsBegin];
1913 // categorically disallowed
1916 // allowed, use first cast's opcode
1919 // allowed, use second cast's opcode
1922 // no-op cast in second op implies firstOp as long as the DestTy
1924 if (DstTy->isInteger())
1928 // no-op cast in second op implies firstOp as long as the DestTy
1929 // is floating point
1930 if (DstTy->isFloatingPoint())
1934 // no-op cast in first op implies secondOp as long as the SrcTy
1936 if (SrcTy->isInteger())
1940 // no-op cast in first op implies secondOp as long as the SrcTy
1941 // is a floating point
1942 if (SrcTy->isFloatingPoint())
1946 // ptrtoint, inttoptr -> bitcast (ptr -> ptr) if int size is >= ptr size
1947 unsigned PtrSize = IntPtrTy->getScalarSizeInBits();
1948 unsigned MidSize = MidTy->getScalarSizeInBits();
1949 if (MidSize >= PtrSize)
1950 return Instruction::BitCast;
1954 // ext, trunc -> bitcast, if the SrcTy and DstTy are same size
1955 // ext, trunc -> ext, if sizeof(SrcTy) < sizeof(DstTy)
1956 // ext, trunc -> trunc, if sizeof(SrcTy) > sizeof(DstTy)
1957 unsigned SrcSize = SrcTy->getScalarSizeInBits();
1958 unsigned DstSize = DstTy->getScalarSizeInBits();
1959 if (SrcSize == DstSize)
1960 return Instruction::BitCast;
1961 else if (SrcSize < DstSize)
1965 case 9: // zext, sext -> zext, because sext can't sign extend after zext
1966 return Instruction::ZExt;
1968 // fpext followed by ftrunc is allowed if the bit size returned to is
1969 // the same as the original, in which case its just a bitcast
1971 return Instruction::BitCast;
1972 return 0; // If the types are not the same we can't eliminate it.
1974 // bitcast followed by ptrtoint is allowed as long as the bitcast
1975 // is a pointer to pointer cast.
1976 if (isa<PointerType>(SrcTy) && isa<PointerType>(MidTy))
1980 // inttoptr, bitcast -> intptr if bitcast is a ptr to ptr cast
1981 if (isa<PointerType>(MidTy) && isa<PointerType>(DstTy))
1985 // inttoptr, ptrtoint -> bitcast if SrcSize<=PtrSize and SrcSize==DstSize
1986 unsigned PtrSize = IntPtrTy->getScalarSizeInBits();
1987 unsigned SrcSize = SrcTy->getScalarSizeInBits();
1988 unsigned DstSize = DstTy->getScalarSizeInBits();
1989 if (SrcSize <= PtrSize && SrcSize == DstSize)
1990 return Instruction::BitCast;
1994 // cast combination can't happen (error in input). This is for all cases
1995 // where the MidTy is not the same for the two cast instructions.
1996 assert(!"Invalid Cast Combination");
1999 assert(!"Error in CastResults table!!!");
2005 CastInst *CastInst::Create(Instruction::CastOps op, Value *S, const Type *Ty,
2006 const std::string &Name, Instruction *InsertBefore) {
2007 // Construct and return the appropriate CastInst subclass
2009 case Trunc: return new TruncInst (S, Ty, Name, InsertBefore);
2010 case ZExt: return new ZExtInst (S, Ty, Name, InsertBefore);
2011 case SExt: return new SExtInst (S, Ty, Name, InsertBefore);
2012 case FPTrunc: return new FPTruncInst (S, Ty, Name, InsertBefore);
2013 case FPExt: return new FPExtInst (S, Ty, Name, InsertBefore);
2014 case UIToFP: return new UIToFPInst (S, Ty, Name, InsertBefore);
2015 case SIToFP: return new SIToFPInst (S, Ty, Name, InsertBefore);
2016 case FPToUI: return new FPToUIInst (S, Ty, Name, InsertBefore);
2017 case FPToSI: return new FPToSIInst (S, Ty, Name, InsertBefore);
2018 case PtrToInt: return new PtrToIntInst (S, Ty, Name, InsertBefore);
2019 case IntToPtr: return new IntToPtrInst (S, Ty, Name, InsertBefore);
2020 case BitCast: return new BitCastInst (S, Ty, Name, InsertBefore);
2022 assert(!"Invalid opcode provided");
2027 CastInst *CastInst::Create(Instruction::CastOps op, Value *S, const Type *Ty,
2028 const std::string &Name, BasicBlock *InsertAtEnd) {
2029 // Construct and return the appropriate CastInst subclass
2031 case Trunc: return new TruncInst (S, Ty, Name, InsertAtEnd);
2032 case ZExt: return new ZExtInst (S, Ty, Name, InsertAtEnd);
2033 case SExt: return new SExtInst (S, Ty, Name, InsertAtEnd);
2034 case FPTrunc: return new FPTruncInst (S, Ty, Name, InsertAtEnd);
2035 case FPExt: return new FPExtInst (S, Ty, Name, InsertAtEnd);
2036 case UIToFP: return new UIToFPInst (S, Ty, Name, InsertAtEnd);
2037 case SIToFP: return new SIToFPInst (S, Ty, Name, InsertAtEnd);
2038 case FPToUI: return new FPToUIInst (S, Ty, Name, InsertAtEnd);
2039 case FPToSI: return new FPToSIInst (S, Ty, Name, InsertAtEnd);
2040 case PtrToInt: return new PtrToIntInst (S, Ty, Name, InsertAtEnd);
2041 case IntToPtr: return new IntToPtrInst (S, Ty, Name, InsertAtEnd);
2042 case BitCast: return new BitCastInst (S, Ty, Name, InsertAtEnd);
2044 assert(!"Invalid opcode provided");
2049 CastInst *CastInst::CreateZExtOrBitCast(Value *S, const Type *Ty,
2050 const std::string &Name,
2051 Instruction *InsertBefore) {
2052 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2053 return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
2054 return Create(Instruction::ZExt, S, Ty, Name, InsertBefore);
2057 CastInst *CastInst::CreateZExtOrBitCast(Value *S, const Type *Ty,
2058 const std::string &Name,
2059 BasicBlock *InsertAtEnd) {
2060 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2061 return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
2062 return Create(Instruction::ZExt, S, Ty, Name, InsertAtEnd);
2065 CastInst *CastInst::CreateSExtOrBitCast(Value *S, const Type *Ty,
2066 const std::string &Name,
2067 Instruction *InsertBefore) {
2068 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2069 return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
2070 return Create(Instruction::SExt, S, Ty, Name, InsertBefore);
2073 CastInst *CastInst::CreateSExtOrBitCast(Value *S, const Type *Ty,
2074 const std::string &Name,
2075 BasicBlock *InsertAtEnd) {
2076 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2077 return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
2078 return Create(Instruction::SExt, S, Ty, Name, InsertAtEnd);
2081 CastInst *CastInst::CreateTruncOrBitCast(Value *S, const Type *Ty,
2082 const std::string &Name,
2083 Instruction *InsertBefore) {
2084 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2085 return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
2086 return Create(Instruction::Trunc, S, Ty, Name, InsertBefore);
2089 CastInst *CastInst::CreateTruncOrBitCast(Value *S, const Type *Ty,
2090 const std::string &Name,
2091 BasicBlock *InsertAtEnd) {
2092 if (S->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
2093 return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
2094 return Create(Instruction::Trunc, S, Ty, Name, InsertAtEnd);
2097 CastInst *CastInst::CreatePointerCast(Value *S, const Type *Ty,
2098 const std::string &Name,
2099 BasicBlock *InsertAtEnd) {
2100 assert(isa<PointerType>(S->getType()) && "Invalid cast");
2101 assert((Ty->isInteger() || isa<PointerType>(Ty)) &&
2104 if (Ty->isInteger())
2105 return Create(Instruction::PtrToInt, S, Ty, Name, InsertAtEnd);
2106 return Create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
2109 /// @brief Create a BitCast or a PtrToInt cast instruction
2110 CastInst *CastInst::CreatePointerCast(Value *S, const Type *Ty,
2111 const std::string &Name,
2112 Instruction *InsertBefore) {
2113 assert(isa<PointerType>(S->getType()) && "Invalid cast");
2114 assert((Ty->isInteger() || isa<PointerType>(Ty)) &&
2117 if (Ty->isInteger())
2118 return Create(Instruction::PtrToInt, S, Ty, Name, InsertBefore);
2119 return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
2122 CastInst *CastInst::CreateIntegerCast(Value *C, const Type *Ty,
2123 bool isSigned, const std::string &Name,
2124 Instruction *InsertBefore) {
2125 assert(C->getType()->isInteger() && Ty->isInteger() && "Invalid cast");
2126 unsigned SrcBits = C->getType()->getScalarSizeInBits();
2127 unsigned DstBits = Ty->getScalarSizeInBits();
2128 Instruction::CastOps opcode =
2129 (SrcBits == DstBits ? Instruction::BitCast :
2130 (SrcBits > DstBits ? Instruction::Trunc :
2131 (isSigned ? Instruction::SExt : Instruction::ZExt)));
2132 return Create(opcode, C, Ty, Name, InsertBefore);
2135 CastInst *CastInst::CreateIntegerCast(Value *C, const Type *Ty,
2136 bool isSigned, const std::string &Name,
2137 BasicBlock *InsertAtEnd) {
2138 assert(C->getType()->isIntOrIntVector() && Ty->isIntOrIntVector() &&
2140 unsigned SrcBits = C->getType()->getScalarSizeInBits();
2141 unsigned DstBits = Ty->getScalarSizeInBits();
2142 Instruction::CastOps opcode =
2143 (SrcBits == DstBits ? Instruction::BitCast :
2144 (SrcBits > DstBits ? Instruction::Trunc :
2145 (isSigned ? Instruction::SExt : Instruction::ZExt)));
2146 return Create(opcode, C, Ty, Name, InsertAtEnd);
2149 CastInst *CastInst::CreateFPCast(Value *C, const Type *Ty,
2150 const std::string &Name,
2151 Instruction *InsertBefore) {
2152 assert(C->getType()->isFPOrFPVector() && Ty->isFPOrFPVector() &&
2154 unsigned SrcBits = C->getType()->getScalarSizeInBits();
2155 unsigned DstBits = Ty->getScalarSizeInBits();
2156 Instruction::CastOps opcode =
2157 (SrcBits == DstBits ? Instruction::BitCast :
2158 (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt));
2159 return Create(opcode, C, Ty, Name, InsertBefore);
2162 CastInst *CastInst::CreateFPCast(Value *C, const Type *Ty,
2163 const std::string &Name,
2164 BasicBlock *InsertAtEnd) {
2165 assert(C->getType()->isFPOrFPVector() && Ty->isFPOrFPVector() &&
2167 unsigned SrcBits = C->getType()->getScalarSizeInBits();
2168 unsigned DstBits = Ty->getScalarSizeInBits();
2169 Instruction::CastOps opcode =
2170 (SrcBits == DstBits ? Instruction::BitCast :
2171 (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt));
2172 return Create(opcode, C, Ty, Name, InsertAtEnd);
2175 // Check whether it is valid to call getCastOpcode for these types.
2176 // This routine must be kept in sync with getCastOpcode.
2177 bool CastInst::isCastable(const Type *SrcTy, const Type *DestTy) {
2178 if (!SrcTy->isFirstClassType() || !DestTy->isFirstClassType())
2181 if (SrcTy == DestTy)
2184 // Get the bit sizes, we'll need these
2185 unsigned SrcBits = SrcTy->getScalarSizeInBits(); // 0 for ptr
2186 unsigned DestBits = DestTy->getScalarSizeInBits(); // 0 for ptr
2188 // Run through the possibilities ...
2189 if (DestTy->isInteger()) { // Casting to integral
2190 if (SrcTy->isInteger()) { // Casting from integral
2192 } else if (SrcTy->isFloatingPoint()) { // Casting from floating pt
2194 } else if (const VectorType *PTy = dyn_cast<VectorType>(SrcTy)) {
2195 // Casting from vector
2196 return DestBits == PTy->getBitWidth();
2197 } else { // Casting from something else
2198 return isa<PointerType>(SrcTy);
2200 } else if (DestTy->isFloatingPoint()) { // Casting to floating pt
2201 if (SrcTy->isInteger()) { // Casting from integral
2203 } else if (SrcTy->isFloatingPoint()) { // Casting from floating pt
2205 } else if (const VectorType *PTy = dyn_cast<VectorType>(SrcTy)) {
2206 // Casting from vector
2207 return DestBits == PTy->getBitWidth();
2208 } else { // Casting from something else
2211 } else if (const VectorType *DestPTy = dyn_cast<VectorType>(DestTy)) {
2212 // Casting to vector
2213 if (const VectorType *SrcPTy = dyn_cast<VectorType>(SrcTy)) {
2214 // Casting from vector
2215 return DestPTy->getBitWidth() == SrcPTy->getBitWidth();
2216 } else { // Casting from something else
2217 return DestPTy->getBitWidth() == SrcBits;
2219 } else if (isa<PointerType>(DestTy)) { // Casting to pointer
2220 if (isa<PointerType>(SrcTy)) { // Casting from pointer
2222 } else if (SrcTy->isInteger()) { // Casting from integral
2224 } else { // Casting from something else
2227 } else { // Casting to something else
2232 // Provide a way to get a "cast" where the cast opcode is inferred from the
2233 // types and size of the operand. This, basically, is a parallel of the
2234 // logic in the castIsValid function below. This axiom should hold:
2235 // castIsValid( getCastOpcode(Val, Ty), Val, Ty)
2236 // should not assert in castIsValid. In other words, this produces a "correct"
2237 // casting opcode for the arguments passed to it.
2238 // This routine must be kept in sync with isCastable.
2239 Instruction::CastOps
2240 CastInst::getCastOpcode(
2241 const Value *Src, bool SrcIsSigned, const Type *DestTy, bool DestIsSigned) {
2242 // Get the bit sizes, we'll need these
2243 const Type *SrcTy = Src->getType();
2244 unsigned SrcBits = SrcTy->getScalarSizeInBits(); // 0 for ptr
2245 unsigned DestBits = DestTy->getScalarSizeInBits(); // 0 for ptr
2247 assert(SrcTy->isFirstClassType() && DestTy->isFirstClassType() &&
2248 "Only first class types are castable!");
2250 // Run through the possibilities ...
2251 if (DestTy->isInteger()) { // Casting to integral
2252 if (SrcTy->isInteger()) { // Casting from integral
2253 if (DestBits < SrcBits)
2254 return Trunc; // int -> smaller int
2255 else if (DestBits > SrcBits) { // its an extension
2257 return SExt; // signed -> SEXT
2259 return ZExt; // unsigned -> ZEXT
2261 return BitCast; // Same size, No-op cast
2263 } else if (SrcTy->isFloatingPoint()) { // Casting from floating pt
2265 return FPToSI; // FP -> sint
2267 return FPToUI; // FP -> uint
2268 } else if (const VectorType *PTy = dyn_cast<VectorType>(SrcTy)) {
2269 assert(DestBits == PTy->getBitWidth() &&
2270 "Casting vector to integer of different width");
2272 return BitCast; // Same size, no-op cast
2274 assert(isa<PointerType>(SrcTy) &&
2275 "Casting from a value that is not first-class type");
2276 return PtrToInt; // ptr -> int
2278 } else if (DestTy->isFloatingPoint()) { // Casting to floating pt
2279 if (SrcTy->isInteger()) { // Casting from integral
2281 return SIToFP; // sint -> FP
2283 return UIToFP; // uint -> FP
2284 } else if (SrcTy->isFloatingPoint()) { // Casting from floating pt
2285 if (DestBits < SrcBits) {
2286 return FPTrunc; // FP -> smaller FP
2287 } else if (DestBits > SrcBits) {
2288 return FPExt; // FP -> larger FP
2290 return BitCast; // same size, no-op cast
2292 } else if (const VectorType *PTy = dyn_cast<VectorType>(SrcTy)) {
2293 assert(DestBits == PTy->getBitWidth() &&
2294 "Casting vector to floating point of different width");
2296 return BitCast; // same size, no-op cast
2298 assert(0 && "Casting pointer or non-first class to float");
2300 } else if (const VectorType *DestPTy = dyn_cast<VectorType>(DestTy)) {
2301 if (const VectorType *SrcPTy = dyn_cast<VectorType>(SrcTy)) {
2302 assert(DestPTy->getBitWidth() == SrcPTy->getBitWidth() &&
2303 "Casting vector to vector of different widths");
2305 return BitCast; // vector -> vector
2306 } else if (DestPTy->getBitWidth() == SrcBits) {
2307 return BitCast; // float/int -> vector
2309 assert(!"Illegal cast to vector (wrong type or size)");
2311 } else if (isa<PointerType>(DestTy)) {
2312 if (isa<PointerType>(SrcTy)) {
2313 return BitCast; // ptr -> ptr
2314 } else if (SrcTy->isInteger()) {
2315 return IntToPtr; // int -> ptr
2317 assert(!"Casting pointer to other than pointer or int");
2320 assert(!"Casting to type that is not first-class");
2323 // If we fall through to here we probably hit an assertion cast above
2324 // and assertions are not turned on. Anything we return is an error, so
2325 // BitCast is as good a choice as any.
2329 //===----------------------------------------------------------------------===//
2330 // CastInst SubClass Constructors
2331 //===----------------------------------------------------------------------===//
2333 /// Check that the construction parameters for a CastInst are correct. This
2334 /// could be broken out into the separate constructors but it is useful to have
2335 /// it in one place and to eliminate the redundant code for getting the sizes
2336 /// of the types involved.
2338 CastInst::castIsValid(Instruction::CastOps op, Value *S, const Type *DstTy) {
2340 // Check for type sanity on the arguments
2341 const Type *SrcTy = S->getType();
2342 if (!SrcTy->isFirstClassType() || !DstTy->isFirstClassType())
2345 // Get the size of the types in bits, we'll need this later
2346 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
2347 unsigned DstBitSize = DstTy->getScalarSizeInBits();
2349 // Switch on the opcode provided
2351 default: return false; // This is an input error
2352 case Instruction::Trunc:
2353 return SrcTy->isIntOrIntVector() &&
2354 DstTy->isIntOrIntVector()&& SrcBitSize > DstBitSize;
2355 case Instruction::ZExt:
2356 return SrcTy->isIntOrIntVector() &&
2357 DstTy->isIntOrIntVector()&& SrcBitSize < DstBitSize;
2358 case Instruction::SExt:
2359 return SrcTy->isIntOrIntVector() &&
2360 DstTy->isIntOrIntVector()&& SrcBitSize < DstBitSize;
2361 case Instruction::FPTrunc:
2362 return SrcTy->isFPOrFPVector() &&
2363 DstTy->isFPOrFPVector() &&
2364 SrcBitSize > DstBitSize;
2365 case Instruction::FPExt:
2366 return SrcTy->isFPOrFPVector() &&
2367 DstTy->isFPOrFPVector() &&
2368 SrcBitSize < DstBitSize;
2369 case Instruction::UIToFP:
2370 case Instruction::SIToFP:
2371 if (const VectorType *SVTy = dyn_cast<VectorType>(SrcTy)) {
2372 if (const VectorType *DVTy = dyn_cast<VectorType>(DstTy)) {
2373 return SVTy->getElementType()->isIntOrIntVector() &&
2374 DVTy->getElementType()->isFPOrFPVector() &&
2375 SVTy->getNumElements() == DVTy->getNumElements();
2378 return SrcTy->isIntOrIntVector() && DstTy->isFPOrFPVector();
2379 case Instruction::FPToUI:
2380 case Instruction::FPToSI:
2381 if (const VectorType *SVTy = dyn_cast<VectorType>(SrcTy)) {
2382 if (const VectorType *DVTy = dyn_cast<VectorType>(DstTy)) {
2383 return SVTy->getElementType()->isFPOrFPVector() &&
2384 DVTy->getElementType()->isIntOrIntVector() &&
2385 SVTy->getNumElements() == DVTy->getNumElements();
2388 return SrcTy->isFPOrFPVector() && DstTy->isIntOrIntVector();
2389 case Instruction::PtrToInt:
2390 return isa<PointerType>(SrcTy) && DstTy->isInteger();
2391 case Instruction::IntToPtr:
2392 return SrcTy->isInteger() && isa<PointerType>(DstTy);
2393 case Instruction::BitCast:
2394 // BitCast implies a no-op cast of type only. No bits change.
2395 // However, you can't cast pointers to anything but pointers.
2396 if (isa<PointerType>(SrcTy) != isa<PointerType>(DstTy))
2399 // Now we know we're not dealing with a pointer/non-pointer mismatch. In all
2400 // these cases, the cast is okay if the source and destination bit widths
2402 return SrcTy->getPrimitiveSizeInBits() == DstTy->getPrimitiveSizeInBits();
2406 TruncInst::TruncInst(
2407 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2408 ) : CastInst(Ty, Trunc, S, Name, InsertBefore) {
2409 assert(castIsValid(getOpcode(), S, Ty) && "Illegal Trunc");
2412 TruncInst::TruncInst(
2413 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2414 ) : CastInst(Ty, Trunc, S, Name, InsertAtEnd) {
2415 assert(castIsValid(getOpcode(), S, Ty) && "Illegal Trunc");
2419 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2420 ) : CastInst(Ty, ZExt, S, Name, InsertBefore) {
2421 assert(castIsValid(getOpcode(), S, Ty) && "Illegal ZExt");
2425 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2426 ) : CastInst(Ty, ZExt, S, Name, InsertAtEnd) {
2427 assert(castIsValid(getOpcode(), S, Ty) && "Illegal ZExt");
2430 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2431 ) : CastInst(Ty, SExt, S, Name, InsertBefore) {
2432 assert(castIsValid(getOpcode(), S, Ty) && "Illegal SExt");
2436 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2437 ) : CastInst(Ty, SExt, S, Name, InsertAtEnd) {
2438 assert(castIsValid(getOpcode(), S, Ty) && "Illegal SExt");
2441 FPTruncInst::FPTruncInst(
2442 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2443 ) : CastInst(Ty, FPTrunc, S, Name, InsertBefore) {
2444 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPTrunc");
2447 FPTruncInst::FPTruncInst(
2448 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2449 ) : CastInst(Ty, FPTrunc, S, Name, InsertAtEnd) {
2450 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPTrunc");
2453 FPExtInst::FPExtInst(
2454 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2455 ) : CastInst(Ty, FPExt, S, Name, InsertBefore) {
2456 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPExt");
2459 FPExtInst::FPExtInst(
2460 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2461 ) : CastInst(Ty, FPExt, S, Name, InsertAtEnd) {
2462 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPExt");
2465 UIToFPInst::UIToFPInst(
2466 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2467 ) : CastInst(Ty, UIToFP, S, Name, InsertBefore) {
2468 assert(castIsValid(getOpcode(), S, Ty) && "Illegal UIToFP");
2471 UIToFPInst::UIToFPInst(
2472 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2473 ) : CastInst(Ty, UIToFP, S, Name, InsertAtEnd) {
2474 assert(castIsValid(getOpcode(), S, Ty) && "Illegal UIToFP");
2477 SIToFPInst::SIToFPInst(
2478 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2479 ) : CastInst(Ty, SIToFP, S, Name, InsertBefore) {
2480 assert(castIsValid(getOpcode(), S, Ty) && "Illegal SIToFP");
2483 SIToFPInst::SIToFPInst(
2484 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2485 ) : CastInst(Ty, SIToFP, S, Name, InsertAtEnd) {
2486 assert(castIsValid(getOpcode(), S, Ty) && "Illegal SIToFP");
2489 FPToUIInst::FPToUIInst(
2490 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2491 ) : CastInst(Ty, FPToUI, S, Name, InsertBefore) {
2492 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToUI");
2495 FPToUIInst::FPToUIInst(
2496 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2497 ) : CastInst(Ty, FPToUI, S, Name, InsertAtEnd) {
2498 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToUI");
2501 FPToSIInst::FPToSIInst(
2502 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2503 ) : CastInst(Ty, FPToSI, S, Name, InsertBefore) {
2504 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToSI");
2507 FPToSIInst::FPToSIInst(
2508 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2509 ) : CastInst(Ty, FPToSI, S, Name, InsertAtEnd) {
2510 assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToSI");
2513 PtrToIntInst::PtrToIntInst(
2514 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2515 ) : CastInst(Ty, PtrToInt, S, Name, InsertBefore) {
2516 assert(castIsValid(getOpcode(), S, Ty) && "Illegal PtrToInt");
2519 PtrToIntInst::PtrToIntInst(
2520 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2521 ) : CastInst(Ty, PtrToInt, S, Name, InsertAtEnd) {
2522 assert(castIsValid(getOpcode(), S, Ty) && "Illegal PtrToInt");
2525 IntToPtrInst::IntToPtrInst(
2526 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2527 ) : CastInst(Ty, IntToPtr, S, Name, InsertBefore) {
2528 assert(castIsValid(getOpcode(), S, Ty) && "Illegal IntToPtr");
2531 IntToPtrInst::IntToPtrInst(
2532 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2533 ) : CastInst(Ty, IntToPtr, S, Name, InsertAtEnd) {
2534 assert(castIsValid(getOpcode(), S, Ty) && "Illegal IntToPtr");
2537 BitCastInst::BitCastInst(
2538 Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore
2539 ) : CastInst(Ty, BitCast, S, Name, InsertBefore) {
2540 assert(castIsValid(getOpcode(), S, Ty) && "Illegal BitCast");
2543 BitCastInst::BitCastInst(
2544 Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd
2545 ) : CastInst(Ty, BitCast, S, Name, InsertAtEnd) {
2546 assert(castIsValid(getOpcode(), S, Ty) && "Illegal BitCast");
2549 //===----------------------------------------------------------------------===//
2551 //===----------------------------------------------------------------------===//
2553 CmpInst::CmpInst(const Type *ty, OtherOps op, unsigned short predicate,
2554 Value *LHS, Value *RHS, const std::string &Name,
2555 Instruction *InsertBefore)
2556 : Instruction(ty, op,
2557 OperandTraits<CmpInst>::op_begin(this),
2558 OperandTraits<CmpInst>::operands(this),
2562 SubclassData = predicate;
2566 CmpInst::CmpInst(const Type *ty, OtherOps op, unsigned short predicate,
2567 Value *LHS, Value *RHS, const std::string &Name,
2568 BasicBlock *InsertAtEnd)
2569 : Instruction(ty, op,
2570 OperandTraits<CmpInst>::op_begin(this),
2571 OperandTraits<CmpInst>::operands(this),
2575 SubclassData = predicate;
2580 CmpInst::Create(OtherOps Op, unsigned short predicate, Value *S1, Value *S2,
2581 const std::string &Name, Instruction *InsertBefore) {
2582 if (Op == Instruction::ICmp) {
2583 return new ICmpInst(CmpInst::Predicate(predicate), S1, S2, Name,
2586 if (Op == Instruction::FCmp) {
2587 return new FCmpInst(CmpInst::Predicate(predicate), S1, S2, Name,
2590 if (Op == Instruction::VICmp) {
2591 return new VICmpInst(CmpInst::Predicate(predicate), S1, S2, Name,
2594 return new VFCmpInst(CmpInst::Predicate(predicate), S1, S2, Name,
2599 CmpInst::Create(OtherOps Op, unsigned short predicate, Value *S1, Value *S2,
2600 const std::string &Name, BasicBlock *InsertAtEnd) {
2601 if (Op == Instruction::ICmp) {
2602 return new ICmpInst(CmpInst::Predicate(predicate), S1, S2, Name,
2605 if (Op == Instruction::FCmp) {
2606 return new FCmpInst(CmpInst::Predicate(predicate), S1, S2, Name,
2609 if (Op == Instruction::VICmp) {
2610 return new VICmpInst(CmpInst::Predicate(predicate), S1, S2, Name,
2613 return new VFCmpInst(CmpInst::Predicate(predicate), S1, S2, Name,
2617 void CmpInst::swapOperands() {
2618 if (ICmpInst *IC = dyn_cast<ICmpInst>(this))
2621 cast<FCmpInst>(this)->swapOperands();
2624 bool CmpInst::isCommutative() {
2625 if (ICmpInst *IC = dyn_cast<ICmpInst>(this))
2626 return IC->isCommutative();
2627 return cast<FCmpInst>(this)->isCommutative();
2630 bool CmpInst::isEquality() {
2631 if (ICmpInst *IC = dyn_cast<ICmpInst>(this))
2632 return IC->isEquality();
2633 return cast<FCmpInst>(this)->isEquality();
2637 CmpInst::Predicate CmpInst::getInversePredicate(Predicate pred) {
2639 default: assert(!"Unknown cmp predicate!");
2640 case ICMP_EQ: return ICMP_NE;
2641 case ICMP_NE: return ICMP_EQ;
2642 case ICMP_UGT: return ICMP_ULE;
2643 case ICMP_ULT: return ICMP_UGE;
2644 case ICMP_UGE: return ICMP_ULT;
2645 case ICMP_ULE: return ICMP_UGT;
2646 case ICMP_SGT: return ICMP_SLE;
2647 case ICMP_SLT: return ICMP_SGE;
2648 case ICMP_SGE: return ICMP_SLT;
2649 case ICMP_SLE: return ICMP_SGT;
2651 case FCMP_OEQ: return FCMP_UNE;
2652 case FCMP_ONE: return FCMP_UEQ;
2653 case FCMP_OGT: return FCMP_ULE;
2654 case FCMP_OLT: return FCMP_UGE;
2655 case FCMP_OGE: return FCMP_ULT;
2656 case FCMP_OLE: return FCMP_UGT;
2657 case FCMP_UEQ: return FCMP_ONE;
2658 case FCMP_UNE: return FCMP_OEQ;
2659 case FCMP_UGT: return FCMP_OLE;
2660 case FCMP_ULT: return FCMP_OGE;
2661 case FCMP_UGE: return FCMP_OLT;
2662 case FCMP_ULE: return FCMP_OGT;
2663 case FCMP_ORD: return FCMP_UNO;
2664 case FCMP_UNO: return FCMP_ORD;
2665 case FCMP_TRUE: return FCMP_FALSE;
2666 case FCMP_FALSE: return FCMP_TRUE;
2670 ICmpInst::Predicate ICmpInst::getSignedPredicate(Predicate pred) {
2672 default: assert(! "Unknown icmp predicate!");
2673 case ICMP_EQ: case ICMP_NE:
2674 case ICMP_SGT: case ICMP_SLT: case ICMP_SGE: case ICMP_SLE:
2676 case ICMP_UGT: return ICMP_SGT;
2677 case ICMP_ULT: return ICMP_SLT;
2678 case ICMP_UGE: return ICMP_SGE;
2679 case ICMP_ULE: return ICMP_SLE;
2683 ICmpInst::Predicate ICmpInst::getUnsignedPredicate(Predicate pred) {
2685 default: assert(! "Unknown icmp predicate!");
2686 case ICMP_EQ: case ICMP_NE:
2687 case ICMP_UGT: case ICMP_ULT: case ICMP_UGE: case ICMP_ULE:
2689 case ICMP_SGT: return ICMP_UGT;
2690 case ICMP_SLT: return ICMP_ULT;
2691 case ICMP_SGE: return ICMP_UGE;
2692 case ICMP_SLE: return ICMP_ULE;
2696 bool ICmpInst::isSignedPredicate(Predicate pred) {
2698 default: assert(! "Unknown icmp predicate!");
2699 case ICMP_SGT: case ICMP_SLT: case ICMP_SGE: case ICMP_SLE:
2701 case ICMP_EQ: case ICMP_NE: case ICMP_UGT: case ICMP_ULT:
2702 case ICMP_UGE: case ICMP_ULE:
2707 /// Initialize a set of values that all satisfy the condition with C.
2710 ICmpInst::makeConstantRange(Predicate pred, const APInt &C) {
2713 uint32_t BitWidth = C.getBitWidth();
2715 default: assert(0 && "Invalid ICmp opcode to ConstantRange ctor!");
2716 case ICmpInst::ICMP_EQ: Upper++; break;
2717 case ICmpInst::ICMP_NE: Lower++; break;
2718 case ICmpInst::ICMP_ULT: Lower = APInt::getMinValue(BitWidth); break;
2719 case ICmpInst::ICMP_SLT: Lower = APInt::getSignedMinValue(BitWidth); break;
2720 case ICmpInst::ICMP_UGT:
2721 Lower++; Upper = APInt::getMinValue(BitWidth); // Min = Next(Max)
2723 case ICmpInst::ICMP_SGT:
2724 Lower++; Upper = APInt::getSignedMinValue(BitWidth); // Min = Next(Max)
2726 case ICmpInst::ICMP_ULE:
2727 Lower = APInt::getMinValue(BitWidth); Upper++;
2729 case ICmpInst::ICMP_SLE:
2730 Lower = APInt::getSignedMinValue(BitWidth); Upper++;
2732 case ICmpInst::ICMP_UGE:
2733 Upper = APInt::getMinValue(BitWidth); // Min = Next(Max)
2735 case ICmpInst::ICMP_SGE:
2736 Upper = APInt::getSignedMinValue(BitWidth); // Min = Next(Max)
2739 return ConstantRange(Lower, Upper);
2742 CmpInst::Predicate CmpInst::getSwappedPredicate(Predicate pred) {
2744 default: assert(!"Unknown cmp predicate!");
2745 case ICMP_EQ: case ICMP_NE:
2747 case ICMP_SGT: return ICMP_SLT;
2748 case ICMP_SLT: return ICMP_SGT;
2749 case ICMP_SGE: return ICMP_SLE;
2750 case ICMP_SLE: return ICMP_SGE;
2751 case ICMP_UGT: return ICMP_ULT;
2752 case ICMP_ULT: return ICMP_UGT;
2753 case ICMP_UGE: return ICMP_ULE;
2754 case ICMP_ULE: return ICMP_UGE;
2756 case FCMP_FALSE: case FCMP_TRUE:
2757 case FCMP_OEQ: case FCMP_ONE:
2758 case FCMP_UEQ: case FCMP_UNE:
2759 case FCMP_ORD: case FCMP_UNO:
2761 case FCMP_OGT: return FCMP_OLT;
2762 case FCMP_OLT: return FCMP_OGT;
2763 case FCMP_OGE: return FCMP_OLE;
2764 case FCMP_OLE: return FCMP_OGE;
2765 case FCMP_UGT: return FCMP_ULT;
2766 case FCMP_ULT: return FCMP_UGT;
2767 case FCMP_UGE: return FCMP_ULE;
2768 case FCMP_ULE: return FCMP_UGE;
2772 bool CmpInst::isUnsigned(unsigned short predicate) {
2773 switch (predicate) {
2774 default: return false;
2775 case ICmpInst::ICMP_ULT: case ICmpInst::ICMP_ULE: case ICmpInst::ICMP_UGT:
2776 case ICmpInst::ICMP_UGE: return true;
2780 bool CmpInst::isSigned(unsigned short predicate){
2781 switch (predicate) {
2782 default: return false;
2783 case ICmpInst::ICMP_SLT: case ICmpInst::ICMP_SLE: case ICmpInst::ICMP_SGT:
2784 case ICmpInst::ICMP_SGE: return true;
2788 bool CmpInst::isOrdered(unsigned short predicate) {
2789 switch (predicate) {
2790 default: return false;
2791 case FCmpInst::FCMP_OEQ: case FCmpInst::FCMP_ONE: case FCmpInst::FCMP_OGT:
2792 case FCmpInst::FCMP_OLT: case FCmpInst::FCMP_OGE: case FCmpInst::FCMP_OLE:
2793 case FCmpInst::FCMP_ORD: return true;
2797 bool CmpInst::isUnordered(unsigned short predicate) {
2798 switch (predicate) {
2799 default: return false;
2800 case FCmpInst::FCMP_UEQ: case FCmpInst::FCMP_UNE: case FCmpInst::FCMP_UGT:
2801 case FCmpInst::FCMP_ULT: case FCmpInst::FCMP_UGE: case FCmpInst::FCMP_ULE:
2802 case FCmpInst::FCMP_UNO: return true;
2806 //===----------------------------------------------------------------------===//
2807 // SwitchInst Implementation
2808 //===----------------------------------------------------------------------===//
2810 void SwitchInst::init(Value *Value, BasicBlock *Default, unsigned NumCases) {
2811 assert(Value && Default);
2812 ReservedSpace = 2+NumCases*2;
2814 OperandList = allocHungoffUses(ReservedSpace);
2816 OperandList[0] = Value;
2817 OperandList[1] = Default;
2820 /// SwitchInst ctor - Create a new switch instruction, specifying a value to
2821 /// switch on and a default destination. The number of additional cases can
2822 /// be specified here to make memory allocation more efficient. This
2823 /// constructor can also autoinsert before another instruction.
2824 SwitchInst::SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
2825 Instruction *InsertBefore)
2826 : TerminatorInst(Type::VoidTy, Instruction::Switch, 0, 0, InsertBefore) {
2827 init(Value, Default, NumCases);
2830 /// SwitchInst ctor - Create a new switch instruction, specifying a value to
2831 /// switch on and a default destination. The number of additional cases can
2832 /// be specified here to make memory allocation more efficient. This
2833 /// constructor also autoinserts at the end of the specified BasicBlock.
2834 SwitchInst::SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
2835 BasicBlock *InsertAtEnd)
2836 : TerminatorInst(Type::VoidTy, Instruction::Switch, 0, 0, InsertAtEnd) {
2837 init(Value, Default, NumCases);
2840 SwitchInst::SwitchInst(const SwitchInst &SI)
2841 : TerminatorInst(Type::VoidTy, Instruction::Switch,
2842 allocHungoffUses(SI.getNumOperands()), SI.getNumOperands()) {
2843 Use *OL = OperandList, *InOL = SI.OperandList;
2844 for (unsigned i = 0, E = SI.getNumOperands(); i != E; i+=2) {
2846 OL[i+1] = InOL[i+1];
2850 SwitchInst::~SwitchInst() {
2851 dropHungoffUses(OperandList);
2855 /// addCase - Add an entry to the switch instruction...
2857 void SwitchInst::addCase(ConstantInt *OnVal, BasicBlock *Dest) {
2858 unsigned OpNo = NumOperands;
2859 if (OpNo+2 > ReservedSpace)
2860 resizeOperands(0); // Get more space!
2861 // Initialize some new operands.
2862 assert(OpNo+1 < ReservedSpace && "Growing didn't work!");
2863 NumOperands = OpNo+2;
2864 OperandList[OpNo] = OnVal;
2865 OperandList[OpNo+1] = Dest;
2868 /// removeCase - This method removes the specified successor from the switch
2869 /// instruction. Note that this cannot be used to remove the default
2870 /// destination (successor #0).
2872 void SwitchInst::removeCase(unsigned idx) {
2873 assert(idx != 0 && "Cannot remove the default case!");
2874 assert(idx*2 < getNumOperands() && "Successor index out of range!!!");
2876 unsigned NumOps = getNumOperands();
2877 Use *OL = OperandList;
2879 // Move everything after this operand down.
2881 // FIXME: we could just swap with the end of the list, then erase. However,
2882 // client might not expect this to happen. The code as it is thrashes the
2883 // use/def lists, which is kinda lame.
2884 for (unsigned i = (idx+1)*2; i != NumOps; i += 2) {
2886 OL[i-2+1] = OL[i+1];
2889 // Nuke the last value.
2890 OL[NumOps-2].set(0);
2891 OL[NumOps-2+1].set(0);
2892 NumOperands = NumOps-2;
2895 /// resizeOperands - resize operands - This adjusts the length of the operands
2896 /// list according to the following behavior:
2897 /// 1. If NumOps == 0, grow the operand list in response to a push_back style
2898 /// of operation. This grows the number of ops by 3 times.
2899 /// 2. If NumOps > NumOperands, reserve space for NumOps operands.
2900 /// 3. If NumOps == NumOperands, trim the reserved space.
2902 void SwitchInst::resizeOperands(unsigned NumOps) {
2903 unsigned e = getNumOperands();
2906 } else if (NumOps*2 > NumOperands) {
2907 // No resize needed.
2908 if (ReservedSpace >= NumOps) return;
2909 } else if (NumOps == NumOperands) {
2910 if (ReservedSpace == NumOps) return;
2915 ReservedSpace = NumOps;
2916 Use *NewOps = allocHungoffUses(NumOps);
2917 Use *OldOps = OperandList;
2918 for (unsigned i = 0; i != e; ++i) {
2919 NewOps[i] = OldOps[i];
2921 OperandList = NewOps;
2922 if (OldOps) Use::zap(OldOps, OldOps + e, true);
2926 BasicBlock *SwitchInst::getSuccessorV(unsigned idx) const {
2927 return getSuccessor(idx);
2929 unsigned SwitchInst::getNumSuccessorsV() const {
2930 return getNumSuccessors();
2932 void SwitchInst::setSuccessorV(unsigned idx, BasicBlock *B) {
2933 setSuccessor(idx, B);
2936 // Define these methods here so vtables don't get emitted into every translation
2937 // unit that uses these classes.
2939 GetElementPtrInst *GetElementPtrInst::clone() const {
2940 return new(getNumOperands()) GetElementPtrInst(*this);
2943 BinaryOperator *BinaryOperator::clone() const {
2944 return Create(getOpcode(), Op<0>(), Op<1>());
2947 FCmpInst* FCmpInst::clone() const {
2948 return new FCmpInst(getPredicate(), Op<0>(), Op<1>());
2950 ICmpInst* ICmpInst::clone() const {
2951 return new ICmpInst(getPredicate(), Op<0>(), Op<1>());
2954 VFCmpInst* VFCmpInst::clone() const {
2955 return new VFCmpInst(getPredicate(), Op<0>(), Op<1>());
2957 VICmpInst* VICmpInst::clone() const {
2958 return new VICmpInst(getPredicate(), Op<0>(), Op<1>());
2961 ExtractValueInst *ExtractValueInst::clone() const {
2962 return new ExtractValueInst(*this);
2964 InsertValueInst *InsertValueInst::clone() const {
2965 return new InsertValueInst(*this);
2969 MallocInst *MallocInst::clone() const { return new MallocInst(*this); }
2970 AllocaInst *AllocaInst::clone() const { return new AllocaInst(*this); }
2971 FreeInst *FreeInst::clone() const { return new FreeInst(getOperand(0)); }
2972 LoadInst *LoadInst::clone() const { return new LoadInst(*this); }
2973 StoreInst *StoreInst::clone() const { return new StoreInst(*this); }
2974 CastInst *TruncInst::clone() const { return new TruncInst(*this); }
2975 CastInst *ZExtInst::clone() const { return new ZExtInst(*this); }
2976 CastInst *SExtInst::clone() const { return new SExtInst(*this); }
2977 CastInst *FPTruncInst::clone() const { return new FPTruncInst(*this); }
2978 CastInst *FPExtInst::clone() const { return new FPExtInst(*this); }
2979 CastInst *UIToFPInst::clone() const { return new UIToFPInst(*this); }
2980 CastInst *SIToFPInst::clone() const { return new SIToFPInst(*this); }
2981 CastInst *FPToUIInst::clone() const { return new FPToUIInst(*this); }
2982 CastInst *FPToSIInst::clone() const { return new FPToSIInst(*this); }
2983 CastInst *PtrToIntInst::clone() const { return new PtrToIntInst(*this); }
2984 CastInst *IntToPtrInst::clone() const { return new IntToPtrInst(*this); }
2985 CastInst *BitCastInst::clone() const { return new BitCastInst(*this); }
2986 CallInst *CallInst::clone() const {
2987 return new(getNumOperands()) CallInst(*this);
2989 SelectInst *SelectInst::clone() const {
2990 return new(getNumOperands()) SelectInst(*this);
2992 VAArgInst *VAArgInst::clone() const { return new VAArgInst(*this); }
2994 ExtractElementInst *ExtractElementInst::clone() const {
2995 return new ExtractElementInst(*this);
2997 InsertElementInst *InsertElementInst::clone() const {
2998 return InsertElementInst::Create(*this);
3000 ShuffleVectorInst *ShuffleVectorInst::clone() const {
3001 return new ShuffleVectorInst(*this);
3003 PHINode *PHINode::clone() const { return new PHINode(*this); }
3004 ReturnInst *ReturnInst::clone() const {
3005 return new(getNumOperands()) ReturnInst(*this);
3007 BranchInst *BranchInst::clone() const {
3008 unsigned Ops(getNumOperands());
3009 return new(Ops, Ops == 1) BranchInst(*this);
3011 SwitchInst *SwitchInst::clone() const { return new SwitchInst(*this); }
3012 InvokeInst *InvokeInst::clone() const {
3013 return new(getNumOperands()) InvokeInst(*this);
3015 UnwindInst *UnwindInst::clone() const { return new UnwindInst(); }
3016 UnreachableInst *UnreachableInst::clone() const { return new UnreachableInst();}