X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FInstructions.cpp;h=c0b3413da33782870832f11d011181ba3ab69485;hb=e6be34a53ecbe8c2ff9f0793b13d847e94c0de91;hp=43f89760af81366c9d22d64914e7f1f8ce468bde;hpb=cd406fe1236a1e0a7f210676768ddd3f69e23166;p=oota-llvm.git diff --git a/lib/VMCore/Instructions.cpp b/lib/VMCore/Instructions.cpp index 43f89760af8..c0b3413da33 100644 --- a/lib/VMCore/Instructions.cpp +++ b/lib/VMCore/Instructions.cpp @@ -2,8 +2,8 @@ // // The LLVM Compiler Infrastructure // -// This file was developed by the LLVM research group and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // @@ -17,12 +17,20 @@ #include "llvm/DerivedTypes.h" #include "llvm/Function.h" #include "llvm/Instructions.h" -#include "llvm/ParameterAttributes.h" +#include "llvm/ParamAttrsList.h" #include "llvm/Support/CallSite.h" #include "llvm/Support/ConstantRange.h" #include "llvm/Support/MathExtras.h" using namespace llvm; +//===----------------------------------------------------------------------===// +// CallSite Class +//===----------------------------------------------------------------------===// + +CallSite::CallSite(Instruction *C) { + assert((isa(C) || isa(C)) && "Not a call!"); + I = C; +} unsigned CallSite::getCallingConv() const { if (CallInst *CI = dyn_cast(I)) return CI->getCallingConv(); @@ -35,9 +43,55 @@ void CallSite::setCallingConv(unsigned CC) { else cast(I)->setCallingConv(CC); } +const ParamAttrsList* CallSite::getParamAttrs() const { + if (CallInst *CI = dyn_cast(I)) + return CI->getParamAttrs(); + else + return cast(I)->getParamAttrs(); +} +void CallSite::setParamAttrs(const ParamAttrsList *PAL) { + if (CallInst *CI = dyn_cast(I)) + CI->setParamAttrs(PAL); + else + cast(I)->setParamAttrs(PAL); +} +bool CallSite::paramHasAttr(uint16_t i, ParameterAttributes attr) const { + if (CallInst *CI = dyn_cast(I)) + return CI->paramHasAttr(i, attr); + else + return cast(I)->paramHasAttr(i, attr); +} +uint16_t CallSite::getParamAlignment(uint16_t i) const { + if (CallInst *CI = dyn_cast(I)) + return CI->getParamAlignment(i); + else + return cast(I)->getParamAlignment(i); +} - - +bool CallSite::doesNotAccessMemory() const { + if (CallInst *CI = dyn_cast(I)) + return CI->doesNotAccessMemory(); + else + return cast(I)->doesNotAccessMemory(); +} +bool CallSite::onlyReadsMemory() const { + if (CallInst *CI = dyn_cast(I)) + return CI->onlyReadsMemory(); + else + return cast(I)->onlyReadsMemory(); +} +bool CallSite::doesNotThrow() const { + if (CallInst *CI = dyn_cast(I)) + return CI->doesNotThrow(); + else + return cast(I)->doesNotThrow(); +} +void CallSite::setDoesNotThrow(bool doesNotThrow) { + if (CallInst *CI = dyn_cast(I)) + CI->setDoesNotThrow(doesNotThrow); + else + cast(I)->setDoesNotThrow(doesNotThrow); +} //===----------------------------------------------------------------------===// // TerminatorInst Class @@ -139,11 +193,12 @@ void PHINode::resizeOperands(unsigned NumOps) { /// Value *PHINode::hasConstantValue(bool AllowNonDominatingInstruction) const { // If the PHI node only has one incoming value, eliminate the PHI node... - if (getNumIncomingValues() == 1) + if (getNumIncomingValues() == 1) { if (getIncomingValue(0) != this) // not X = phi X return getIncomingValue(0); else return UndefValue::get(getType()); // Self cycle is dead. + } // Otherwise if all of the incoming values are the same for the PHI, replace // the PHI node with the incoming value. @@ -151,13 +206,14 @@ Value *PHINode::hasConstantValue(bool AllowNonDominatingInstruction) const { Value *InVal = 0; bool HasUndefInput = false; for (unsigned i = 0, e = getNumIncomingValues(); i != e; ++i) - if (isa(getIncomingValue(i))) + if (isa(getIncomingValue(i))) { HasUndefInput = true; - else if (getIncomingValue(i) != this) // Not the PHI node itself... + } else if (getIncomingValue(i) != this) { // Not the PHI node itself... if (InVal && getIncomingValue(i) != InVal) return 0; // Not the same, bail out. else InVal = getIncomingValue(i); + } // The only case that could cause InVal to be null is if we have a PHI node // that only has entries for itself. In this case, there is no entry into the @@ -267,43 +323,6 @@ void CallInst::init(Value *Func) { assert(FTy->getNumParams() == 0 && "Calling a function with bad signature"); } -#if 0 -// Leave for llvm-gcc -CallInst::CallInst(Value *Func, Value* const *Args, unsigned NumArgs, - const std::string &Name, BasicBlock *InsertAtEnd) - : Instruction(cast(cast(Func->getType()) - ->getElementType())->getReturnType(), - Instruction::Call, 0, 0, InsertAtEnd) { - init(Func, Args, NumArgs); - setName(Name); -} -CallInst::CallInst(Value *Func, Value* const *Args, unsigned NumArgs, - const std::string &Name, Instruction *InsertBefore) - : Instruction(cast(cast(Func->getType()) - ->getElementType())->getReturnType(), - Instruction::Call, 0, 0, InsertBefore) { - init(Func, Args, NumArgs); - setName(Name); -} - -CallInst::CallInst(Value *Func, Value *Actual1, Value *Actual2, - const std::string &Name, Instruction *InsertBefore) - : Instruction(cast(cast(Func->getType()) - ->getElementType())->getReturnType(), - Instruction::Call, 0, 0, InsertBefore) { - init(Func, Actual1, Actual2); - setName(Name); -} - -CallInst::CallInst(Value *Func, Value *Actual1, Value *Actual2, - const std::string &Name, BasicBlock *InsertAtEnd) - : Instruction(cast(cast(Func->getType()) - ->getElementType())->getReturnType(), - Instruction::Call, 0, 0, InsertAtEnd) { - init(Func, Actual1, Actual2); - setName(Name); -} -#endif CallInst::CallInst(Value *Func, Value* Actual, const std::string &Name, Instruction *InsertBefore) : Instruction(cast(cast(Func->getType()) @@ -341,8 +360,9 @@ CallInst::CallInst(Value *Func, const std::string &Name, CallInst::CallInst(const CallInst &CI) : Instruction(CI.getType(), Instruction::Call, new Use[CI.getNumOperands()], - CI.getNumOperands()) { - ParamAttrs = 0; + CI.getNumOperands()), + ParamAttrs(0) { + setParamAttrs(CI.getParamAttrs()); SubclassData = CI.SubclassData; Use *OL = OperandList; Use *InOL = CI.OperandList; @@ -350,7 +370,10 @@ CallInst::CallInst(const CallInst &CI) OL[i].init(InOL[i], this); } -void CallInst::setParamAttrs(ParamAttrsList *newAttrs) { +void CallInst::setParamAttrs(const ParamAttrsList *newAttrs) { + if (ParamAttrs == newAttrs) + return; + if (ParamAttrs) ParamAttrs->dropRef(); @@ -360,6 +383,69 @@ void CallInst::setParamAttrs(ParamAttrsList *newAttrs) { ParamAttrs = newAttrs; } +bool CallInst::paramHasAttr(uint16_t i, ParameterAttributes attr) const { + if (ParamAttrs && ParamAttrs->paramHasAttr(i, attr)) + return true; + if (const Function *F = getCalledFunction()) + return F->paramHasAttr(i, attr); + return false; +} + +uint16_t CallInst::getParamAlignment(uint16_t i) const { + if (ParamAttrs && ParamAttrs->getParamAlignment(i)) + return ParamAttrs->getParamAlignment(i); + if (const Function *F = getCalledFunction()) + return F->getParamAlignment(i); + return 0; +} + +/// @brief Determine if the call does not access memory. +bool CallInst::doesNotAccessMemory() const { + return paramHasAttr(0, ParamAttr::ReadNone); +} + +/// @brief Determine if the call does not access or only reads memory. +bool CallInst::onlyReadsMemory() const { + return doesNotAccessMemory() || paramHasAttr(0, ParamAttr::ReadOnly); +} + +/// @brief Determine if the call cannot return. +bool CallInst::doesNotReturn() const { + return paramHasAttr(0, ParamAttr::NoReturn); +} + +/// @brief Determine if the call cannot unwind. +bool CallInst::doesNotThrow() const { + return paramHasAttr(0, ParamAttr::NoUnwind); +} + +/// @brief Determine if the call returns a structure. +bool CallInst::isStructReturn() const { + // Be friendly and also check the callee. + return paramHasAttr(1, ParamAttr::StructRet); +} + +/// @brief Determine if any call argument is an aggregate passed by value. +bool CallInst::hasByValArgument() const { + if (ParamAttrs && ParamAttrs->hasAttrSomewhere(ParamAttr::ByVal)) + return true; + // Be consistent with other methods and check the callee too. + if (const Function *F = getCalledFunction()) + if (const ParamAttrsList *PAL = F->getParamAttrs()) + return PAL->hasAttrSomewhere(ParamAttr::ByVal); + return false; +} + +void CallInst::setDoesNotThrow(bool doesNotThrow) { + const ParamAttrsList *PAL = getParamAttrs(); + if (doesNotThrow) + PAL = ParamAttrsList::includeAttrs(PAL, 0, ParamAttr::NoUnwind); + else + PAL = ParamAttrsList::excludeAttrs(PAL, 0, ParamAttr::NoUnwind); + setParamAttrs(PAL); +} + + //===----------------------------------------------------------------------===// // InvokeInst Implementation //===----------------------------------------------------------------------===// @@ -382,8 +468,8 @@ void InvokeInst::init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException, cast(cast(Fn->getType())->getElementType()); FTy = FTy; // silence warning. - assert((NumArgs == FTy->getNumParams()) || - (FTy->isVarArg() && NumArgs > FTy->getNumParams()) && + assert(((NumArgs == FTy->getNumParams()) || + (FTy->isVarArg() && NumArgs > FTy->getNumParams())) && "Calling a function with bad signature"); for (unsigned i = 0, e = NumArgs; i != e; i++) { @@ -395,32 +481,11 @@ void InvokeInst::init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException, } } -InvokeInst::InvokeInst(Value *Fn, BasicBlock *IfNormal, - BasicBlock *IfException, - Value* const *Args, unsigned NumArgs, - const std::string &Name, Instruction *InsertBefore) - : TerminatorInst(cast(cast(Fn->getType()) - ->getElementType())->getReturnType(), - Instruction::Invoke, 0, 0, InsertBefore) { - init(Fn, IfNormal, IfException, Args, NumArgs); - setName(Name); -} - -InvokeInst::InvokeInst(Value *Fn, BasicBlock *IfNormal, - BasicBlock *IfException, - Value* const *Args, unsigned NumArgs, - const std::string &Name, BasicBlock *InsertAtEnd) - : TerminatorInst(cast(cast(Fn->getType()) - ->getElementType())->getReturnType(), - Instruction::Invoke, 0, 0, InsertAtEnd) { - init(Fn, IfNormal, IfException, Args, NumArgs); - setName(Name); -} - InvokeInst::InvokeInst(const InvokeInst &II) : TerminatorInst(II.getType(), Instruction::Invoke, - new Use[II.getNumOperands()], II.getNumOperands()) { - ParamAttrs = 0; + new Use[II.getNumOperands()], II.getNumOperands()), + ParamAttrs(0) { + setParamAttrs(II.getParamAttrs()); SubclassData = II.SubclassData; Use *OL = OperandList, *InOL = II.OperandList; for (unsigned i = 0, e = II.getNumOperands(); i != e; ++i) @@ -437,7 +502,10 @@ void InvokeInst::setSuccessorV(unsigned idx, BasicBlock *B) { return setSuccessor(idx, B); } -void InvokeInst::setParamAttrs(ParamAttrsList *newAttrs) { +void InvokeInst::setParamAttrs(const ParamAttrsList *newAttrs) { + if (ParamAttrs == newAttrs) + return; + if (ParamAttrs) ParamAttrs->dropRef(); @@ -447,6 +515,58 @@ void InvokeInst::setParamAttrs(ParamAttrsList *newAttrs) { ParamAttrs = newAttrs; } +bool InvokeInst::paramHasAttr(uint16_t i, ParameterAttributes attr) const { + if (ParamAttrs && ParamAttrs->paramHasAttr(i, attr)) + return true; + if (const Function *F = getCalledFunction()) + return F->paramHasAttr(i, attr); + return false; +} + +uint16_t InvokeInst::getParamAlignment(uint16_t i) const { + if (ParamAttrs && ParamAttrs->getParamAlignment(i)) + return ParamAttrs->getParamAlignment(i); + if (const Function *F = getCalledFunction()) + return F->getParamAlignment(i); + return 0; +} + +/// @brief Determine if the call does not access memory. +bool InvokeInst::doesNotAccessMemory() const { + return paramHasAttr(0, ParamAttr::ReadNone); +} + +/// @brief Determine if the call does not access or only reads memory. +bool InvokeInst::onlyReadsMemory() const { + return doesNotAccessMemory() || paramHasAttr(0, ParamAttr::ReadOnly); +} + +/// @brief Determine if the call cannot return. +bool InvokeInst::doesNotReturn() const { + return paramHasAttr(0, ParamAttr::NoReturn); +} + +/// @brief Determine if the call cannot unwind. +bool InvokeInst::doesNotThrow() const { + return paramHasAttr(0, ParamAttr::NoUnwind); +} + +void InvokeInst::setDoesNotThrow(bool doesNotThrow) { + const ParamAttrsList *PAL = getParamAttrs(); + if (doesNotThrow) + PAL = ParamAttrsList::includeAttrs(PAL, 0, ParamAttr::NoUnwind); + else + PAL = ParamAttrsList::excludeAttrs(PAL, 0, ParamAttr::NoUnwind); + setParamAttrs(PAL); +} + +/// @brief Determine if the call returns a structure. +bool InvokeInst::isStructReturn() const { + // Be friendly and also check the callee. + return paramHasAttr(1, ParamAttr::StructRet); +} + + //===----------------------------------------------------------------------===// // ReturnInst Implementation //===----------------------------------------------------------------------===// @@ -454,30 +574,66 @@ void InvokeInst::setParamAttrs(ParamAttrsList *newAttrs) { ReturnInst::ReturnInst(const ReturnInst &RI) : TerminatorInst(Type::VoidTy, Instruction::Ret, &RetVal, RI.getNumOperands()) { - if (RI.getNumOperands()) + unsigned N = RI.getNumOperands(); + if (N == 1) RetVal.init(RI.RetVal, this); + else if (N) { + Use *OL = OperandList = new Use[N]; + for (unsigned i = 0; i < N; ++i) + OL[i].init(RI.getOperand(i), this); + } } ReturnInst::ReturnInst(Value *retVal, Instruction *InsertBefore) : TerminatorInst(Type::VoidTy, Instruction::Ret, &RetVal, 0, InsertBefore) { - init(retVal); + if (retVal) + init(&retVal, 1); } ReturnInst::ReturnInst(Value *retVal, BasicBlock *InsertAtEnd) : TerminatorInst(Type::VoidTy, Instruction::Ret, &RetVal, 0, InsertAtEnd) { - init(retVal); + if (retVal) + init(&retVal, 1); } ReturnInst::ReturnInst(BasicBlock *InsertAtEnd) : TerminatorInst(Type::VoidTy, Instruction::Ret, &RetVal, 0, InsertAtEnd) { } +ReturnInst::ReturnInst(Value * const* retVals, unsigned N, + Instruction *InsertBefore) + : TerminatorInst(Type::VoidTy, Instruction::Ret, &RetVal, N, InsertBefore) { + if (N != 0) + init(retVals, N); +} +ReturnInst::ReturnInst(Value * const* retVals, unsigned N, + BasicBlock *InsertAtEnd) + : TerminatorInst(Type::VoidTy, Instruction::Ret, &RetVal, N, InsertAtEnd) { + if (N != 0) + init(retVals, N); +} +ReturnInst::ReturnInst(Value * const* retVals, unsigned N) + : TerminatorInst(Type::VoidTy, Instruction::Ret, &RetVal, N) { + if (N != 0) + init(retVals, N); +} + +void ReturnInst::init(Value * const* retVals, unsigned N) { + assert (N > 0 && "Invalid operands numbers in ReturnInst init"); + NumOperands = N; + if (NumOperands == 1) { + Value *V = *retVals; + if (V->getType() == Type::VoidTy) + return; + RetVal.init(V, this); + return; + } -void ReturnInst::init(Value *retVal) { - if (retVal && retVal->getType() != Type::VoidTy) { - assert(!isa(retVal) && + Use *OL = OperandList = new Use[NumOperands]; + for (unsigned i = 0; i < NumOperands; ++i) { + Value *V = *retVals++; + assert(!isa(V) && "Cannot return basic block. Probably using the incorrect ctor"); - NumOperands = 1; - RetVal.init(retVal, this); + OL[i].init(V, this); } } @@ -485,8 +641,8 @@ unsigned ReturnInst::getNumSuccessorsV() const { return getNumSuccessors(); } -// Out-of-line ReturnInst method, put here so the C++ compiler can choose to -// emit the vtable for the class in this translation unit. +/// Out-of-line ReturnInst method, put here so the C++ compiler can choose to +/// emit the vtable for the class in this translation unit. void ReturnInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) { assert(0 && "ReturnInst has no successors!"); } @@ -497,6 +653,10 @@ BasicBlock *ReturnInst::getSuccessorV(unsigned idx) const { return 0; } +ReturnInst::~ReturnInst() { + if (NumOperands > 1) + delete [] OperandList; +} //===----------------------------------------------------------------------===// // UnwindInst Implementation @@ -623,7 +783,7 @@ static Value *getAISize(Value *Amt) { Amt = ConstantInt::get(Type::Int32Ty, 1); else { assert(!isa(Amt) && - "Passed basic block into allocation size parameter! Ue other ctor"); + "Passed basic block into allocation size parameter! Use other ctor"); assert(Amt->getType() == Type::Int32Ty && "Malloc/Allocation array size is not a 32-bit integer!"); } @@ -633,7 +793,7 @@ static Value *getAISize(Value *Amt) { AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align, const std::string &Name, Instruction *InsertBefore) - : UnaryInstruction(PointerType::get(Ty), iTy, getAISize(ArraySize), + : UnaryInstruction(PointerType::getUnqual(Ty), iTy, getAISize(ArraySize), InsertBefore), Alignment(Align) { assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!"); assert(Ty != Type::VoidTy && "Cannot allocate void!"); @@ -643,7 +803,7 @@ AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align, const std::string &Name, BasicBlock *InsertAtEnd) - : UnaryInstruction(PointerType::get(Ty), iTy, getAISize(ArraySize), + : UnaryInstruction(PointerType::getUnqual(Ty), iTy, getAISize(ArraySize), InsertAtEnd), Alignment(Align) { assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!"); assert(Ty != Type::VoidTy && "Cannot allocate void!"); @@ -886,12 +1046,8 @@ void StoreInst::setAlignment(unsigned Align) { // GetElementPtrInst Implementation //===----------------------------------------------------------------------===// -// checkType - Simple wrapper function to give a better assertion failure -// message on bad indexes for a gep instruction. -// -static inline const Type *checkType(const Type *Ty) { - assert(Ty && "Invalid GetElementPtrInst indices for type!"); - return Ty; +static unsigned retrieveAddrSpace(const Value *Val) { + return cast(Val->getType())->getAddressSpace(); } void GetElementPtrInst::init(Value *Ptr, Value* const *Idx, unsigned NumIdx) { @@ -903,14 +1059,6 @@ void GetElementPtrInst::init(Value *Ptr, Value* const *Idx, unsigned NumIdx) { OL[i+1].init(Idx[i], this); } -void GetElementPtrInst::init(Value *Ptr, Value *Idx0, Value *Idx1) { - NumOperands = 3; - Use *OL = OperandList = new Use[3]; - OL[0].init(Ptr, this); - OL[1].init(Idx0, this); - OL[2].init(Idx1, this); -} - void GetElementPtrInst::init(Value *Ptr, Value *Idx) { NumOperands = 2; Use *OL = OperandList = new Use[2]; @@ -918,30 +1066,10 @@ void GetElementPtrInst::init(Value *Ptr, Value *Idx) { OL[1].init(Idx, this); } - -GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value* const *Idx, - unsigned NumIdx, - const std::string &Name, Instruction *InBe) -: Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(), - Idx, NumIdx, true))), - GetElementPtr, 0, 0, InBe) { - init(Ptr, Idx, NumIdx); - setName(Name); -} - -GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value* const *Idx, - unsigned NumIdx, - const std::string &Name, BasicBlock *IAE) -: Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(), - Idx, NumIdx, true))), - GetElementPtr, 0, 0, IAE) { - init(Ptr, Idx, NumIdx); - setName(Name); -} - GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx, const std::string &Name, Instruction *InBe) - : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(),Idx))), + : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(),Idx)), + retrieveAddrSpace(Ptr)), GetElementPtr, 0, 0, InBe) { init(Ptr, Idx); setName(Name); @@ -949,30 +1077,13 @@ GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx, GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx, const std::string &Name, BasicBlock *IAE) - : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(),Idx))), + : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(),Idx)), + retrieveAddrSpace(Ptr)), GetElementPtr, 0, 0, IAE) { init(Ptr, Idx); setName(Name); } -GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1, - const std::string &Name, Instruction *InBe) - : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(), - Idx0, Idx1, true))), - GetElementPtr, 0, 0, InBe) { - init(Ptr, Idx0, Idx1); - setName(Name); -} - -GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1, - const std::string &Name, BasicBlock *IAE) - : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(), - Idx0, Idx1, true))), - GetElementPtr, 0, 0, IAE) { - init(Ptr, Idx0, Idx1); - setName(Name); -} - GetElementPtrInst::~GetElementPtrInst() { delete[] OperandList; } @@ -990,12 +1101,13 @@ const Type* GetElementPtrInst::getIndexedType(const Type *Ptr, if (!isa(Ptr)) return 0; // Type isn't a pointer type! // Handle the special case of the empty set index set... - if (NumIdx == 0) + if (NumIdx == 0) { if (AllowCompositeLeaf || cast(Ptr)->getElementType()->isFirstClassType()) return cast(Ptr)->getElementType(); else return 0; + } unsigned CurIdx = 0; while (const CompositeType *CT = dyn_cast(Ptr)) { @@ -1021,24 +1133,6 @@ const Type* GetElementPtrInst::getIndexedType(const Type *Ptr, return CurIdx == NumIdx ? Ptr : 0; } -const Type* GetElementPtrInst::getIndexedType(const Type *Ptr, - Value *Idx0, Value *Idx1, - bool AllowCompositeLeaf) { - const PointerType *PTy = dyn_cast(Ptr); - if (!PTy) return 0; // Type isn't a pointer type! - - // Check the pointer index. - if (!PTy->indexValid(Idx0)) return 0; - - const CompositeType *CT = dyn_cast(PTy->getElementType()); - if (!CT || !CT->indexValid(Idx1)) return 0; - - const Type *ElTy = CT->getTypeAtIndex(Idx1); - if (AllowCompositeLeaf || ElTy->isFirstClassType()) - return ElTy; - return 0; -} - const Type* GetElementPtrInst::getIndexedType(const Type *Ptr, Value *Idx) { const PointerType *PTy = dyn_cast(Ptr); if (!PTy) return 0; // Type isn't a pointer type! @@ -1881,12 +1975,70 @@ CastInst *CastInst::createFPCast(Value *C, const Type *Ty, return create(opcode, C, Ty, Name, InsertAtEnd); } +// Check whether it is valid to call getCastOpcode for these types. +// This routine must be kept in sync with getCastOpcode. +bool CastInst::isCastable(const Type *SrcTy, const Type *DestTy) { + if (!SrcTy->isFirstClassType() || !DestTy->isFirstClassType()) + return false; + + if (SrcTy == DestTy) + return true; + + // Get the bit sizes, we'll need these + unsigned SrcBits = SrcTy->getPrimitiveSizeInBits(); // 0 for ptr/vector + unsigned DestBits = DestTy->getPrimitiveSizeInBits(); // 0 for ptr/vector + + // Run through the possibilities ... + if (DestTy->isInteger()) { // Casting to integral + if (SrcTy->isInteger()) { // Casting from integral + return true; + } else if (SrcTy->isFloatingPoint()) { // Casting from floating pt + return true; + } else if (const VectorType *PTy = dyn_cast(SrcTy)) { + // Casting from vector + return DestBits == PTy->getBitWidth(); + } else { // Casting from something else + return isa(SrcTy); + } + } else if (DestTy->isFloatingPoint()) { // Casting to floating pt + if (SrcTy->isInteger()) { // Casting from integral + return true; + } else if (SrcTy->isFloatingPoint()) { // Casting from floating pt + return true; + } else if (const VectorType *PTy = dyn_cast(SrcTy)) { + // Casting from vector + return DestBits == PTy->getBitWidth(); + } else { // Casting from something else + return false; + } + } else if (const VectorType *DestPTy = dyn_cast(DestTy)) { + // Casting to vector + if (const VectorType *SrcPTy = dyn_cast(SrcTy)) { + // Casting from vector + return DestPTy->getBitWidth() == SrcPTy->getBitWidth(); + } else { // Casting from something else + return DestPTy->getBitWidth() == SrcBits; + } + } else if (isa(DestTy)) { // Casting to pointer + if (isa(SrcTy)) { // Casting from pointer + return true; + } else if (SrcTy->isInteger()) { // Casting from integral + return true; + } else { // Casting from something else + return false; + } + } else { // Casting to something else + return false; + } +} + // Provide a way to get a "cast" where the cast opcode is inferred from the // types and size of the operand. This, basically, is a parallel of the // logic in the castIsValid function below. This axiom should hold: // castIsValid( getCastOpcode(Val, Ty), Val, Ty) // should not assert in castIsValid. In other words, this produces a "correct" // casting opcode for the arguments passed to it. +// This routine must be kept in sync with isCastable. Instruction::CastOps CastInst::getCastOpcode( const Value *Src, bool SrcIsSigned, const Type *DestTy, bool DestIsSigned) { @@ -1895,6 +2047,9 @@ CastInst::getCastOpcode( unsigned SrcBits = SrcTy->getPrimitiveSizeInBits(); // 0 for ptr/vector unsigned DestBits = DestTy->getPrimitiveSizeInBits(); // 0 for ptr/vector + assert(SrcTy->isFirstClassType() && DestTy->isFirstClassType() && + "Only first class types are castable!"); + // Run through the possibilities ... if (DestTy->isInteger()) { // Casting to integral if (SrcTy->isInteger()) { // Casting from integral @@ -2007,12 +2162,24 @@ CastInst::castIsValid(Instruction::CastOps op, Value *S, const Type *DstTy) { return SrcTy->isFloatingPoint() && DstTy->isFloatingPoint() && SrcBitSize < DstBitSize; case Instruction::UIToFP: - return SrcTy->isInteger() && DstTy->isFloatingPoint(); case Instruction::SIToFP: + if (const VectorType *SVTy = dyn_cast(SrcTy)) { + if (const VectorType *DVTy = dyn_cast(DstTy)) { + return SVTy->getElementType()->isInteger() && + DVTy->getElementType()->isFloatingPoint() && + SVTy->getNumElements() == DVTy->getNumElements(); + } + } return SrcTy->isInteger() && DstTy->isFloatingPoint(); case Instruction::FPToUI: - return SrcTy->isFloatingPoint() && DstTy->isInteger(); case Instruction::FPToSI: + if (const VectorType *SVTy = dyn_cast(SrcTy)) { + if (const VectorType *DVTy = dyn_cast(DstTy)) { + return SVTy->getElementType()->isFloatingPoint() && + DVTy->getElementType()->isInteger() && + SVTy->getNumElements() == DVTy->getNumElements(); + } + } return SrcTy->isFloatingPoint() && DstTy->isInteger(); case Instruction::PtrToInt: return isa(SrcTy) && DstTy->isInteger(); @@ -2024,7 +2191,7 @@ CastInst::castIsValid(Instruction::CastOps op, Value *S, const Type *DstTy) { if (isa(SrcTy) != isa(DstTy)) return false; - // Now we know we're not dealing with a pointer/non-poiner mismatch. In all + // Now we know we're not dealing with a pointer/non-pointer mismatch. In all // these cases, the cast is okay if the source and destination bit widths // are identical. return SrcBitSize == DstBitSize; @@ -2227,7 +2394,7 @@ CmpInst::CmpInst(OtherOps op, unsigned short predicate, Value *LHS, Value *RHS, assert(Op0Ty == Op1Ty && "Both operands to ICmp instruction are not of the same type!"); // Check that the operands are the right type - assert(Op0Ty->isInteger() || isa(Op0Ty) && + assert((Op0Ty->isInteger() || isa(Op0Ty)) && "Invalid operand types for ICmp instruction"); return; } @@ -2331,6 +2498,19 @@ ICmpInst::Predicate ICmpInst::getSignedPredicate(Predicate pred) { } } +ICmpInst::Predicate ICmpInst::getUnsignedPredicate(Predicate pred) { + switch (pred) { + default: assert(! "Unknown icmp predicate!"); + case ICMP_EQ: case ICMP_NE: + case ICMP_UGT: case ICMP_ULT: case ICMP_UGE: case ICMP_ULE: + return pred; + case ICMP_SGT: return ICMP_UGT; + case ICMP_SLT: return ICMP_ULT; + case ICMP_SGE: return ICMP_UGE; + case ICMP_SLE: return ICMP_ULE; + } +} + bool ICmpInst::isSignedPredicate(Predicate pred) { switch (pred) { default: assert(! "Unknown icmp predicate!"); @@ -2583,6 +2763,41 @@ void SwitchInst::setSuccessorV(unsigned idx, BasicBlock *B) { setSuccessor(idx, B); } +//===----------------------------------------------------------------------===// +// GetResultInst Implementation +//===----------------------------------------------------------------------===// + +GetResultInst::GetResultInst(Value *Aggregate, unsigned Index, + const std::string &Name, + Instruction *InsertBef) + : Instruction(cast(Aggregate->getType())->getElementType(Index), + GetResult, &Aggr, 1, InsertBef) { + assert(isValidOperands(Aggregate, Index) && "Invalid GetResultInst operands!"); + Aggr.init(Aggregate, this); + Idx = Index; + setName(Name); +} + +bool GetResultInst::isValidOperands(const Value *Aggregate, unsigned Index) { + if (!Aggregate) + return false; + + if (const StructType *STy = dyn_cast(Aggregate->getType())) { + unsigned NumElements = STy->getNumElements(); + if (Index >= NumElements) + return false; + + // getresult aggregate value's element types are restricted to + // avoid nested aggregates. + for (unsigned i = 0; i < NumElements; ++i) + if (!STy->getElementType(i)->isFirstClassType()) + return false; + + // Otherwise, Aggregate is valid. + return true; + } + return false; +} // Define these methods here so vtables don't get emitted into every translation // unit that uses these classes. @@ -2639,3 +2854,4 @@ SwitchInst *SwitchInst::clone() const { return new SwitchInst(*this); } InvokeInst *InvokeInst::clone() const { return new InvokeInst(*this); } UnwindInst *UnwindInst::clone() const { return new UnwindInst(); } UnreachableInst *UnreachableInst::clone() const { return new UnreachableInst();} +GetResultInst *GetResultInst::clone() const { return new GetResultInst(*this); }