| //===-- Instructions.cpp - Implement the LLVM instructions ----------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements all of the non-inline methods for the LLVM instruction |
| // classes. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/BasicBlock.h" |
| #include "llvm/Constants.h" |
| #include "llvm/DerivedTypes.h" |
| #include "llvm/Function.h" |
| #include "llvm/Instructions.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<CallInst>(C) || isa<InvokeInst>(C)) && "Not a call!"); |
| I = C; |
| } |
| unsigned CallSite::getCallingConv() const { |
| if (CallInst *CI = dyn_cast<CallInst>(I)) |
| return CI->getCallingConv(); |
| else |
| return cast<InvokeInst>(I)->getCallingConv(); |
| } |
| void CallSite::setCallingConv(unsigned CC) { |
| if (CallInst *CI = dyn_cast<CallInst>(I)) |
| CI->setCallingConv(CC); |
| else |
| cast<InvokeInst>(I)->setCallingConv(CC); |
| } |
| const PAListPtr &CallSite::getParamAttrs() const { |
| if (CallInst *CI = dyn_cast<CallInst>(I)) |
| return CI->getParamAttrs(); |
| else |
| return cast<InvokeInst>(I)->getParamAttrs(); |
| } |
| void CallSite::setParamAttrs(const PAListPtr &PAL) { |
| if (CallInst *CI = dyn_cast<CallInst>(I)) |
| CI->setParamAttrs(PAL); |
| else |
| cast<InvokeInst>(I)->setParamAttrs(PAL); |
| } |
| bool CallSite::paramHasAttr(uint16_t i, ParameterAttributes attr) const { |
| if (CallInst *CI = dyn_cast<CallInst>(I)) |
| return CI->paramHasAttr(i, attr); |
| else |
| return cast<InvokeInst>(I)->paramHasAttr(i, attr); |
| } |
| uint16_t CallSite::getParamAlignment(uint16_t i) const { |
| if (CallInst *CI = dyn_cast<CallInst>(I)) |
| return CI->getParamAlignment(i); |
| else |
| return cast<InvokeInst>(I)->getParamAlignment(i); |
| } |
| |
| bool CallSite::doesNotAccessMemory() const { |
| if (CallInst *CI = dyn_cast<CallInst>(I)) |
| return CI->doesNotAccessMemory(); |
| else |
| return cast<InvokeInst>(I)->doesNotAccessMemory(); |
| } |
| bool CallSite::onlyReadsMemory() const { |
| if (CallInst *CI = dyn_cast<CallInst>(I)) |
| return CI->onlyReadsMemory(); |
| else |
| return cast<InvokeInst>(I)->onlyReadsMemory(); |
| } |
| bool CallSite::doesNotThrow() const { |
| if (CallInst *CI = dyn_cast<CallInst>(I)) |
| return CI->doesNotThrow(); |
| else |
| return cast<InvokeInst>(I)->doesNotThrow(); |
| } |
| void CallSite::setDoesNotThrow(bool doesNotThrow) { |
| if (CallInst *CI = dyn_cast<CallInst>(I)) |
| CI->setDoesNotThrow(doesNotThrow); |
| else |
| cast<InvokeInst>(I)->setDoesNotThrow(doesNotThrow); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // TerminatorInst Class |
| //===----------------------------------------------------------------------===// |
| |
| // Out of line virtual method, so the vtable, etc has a home. |
| TerminatorInst::~TerminatorInst() { |
| } |
| |
| // Out of line virtual method, so the vtable, etc has a home. |
| UnaryInstruction::~UnaryInstruction() { |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // PHINode Class |
| //===----------------------------------------------------------------------===// |
| |
| PHINode::PHINode(const PHINode &PN) |
| : Instruction(PN.getType(), Instruction::PHI, |
| new Use[PN.getNumOperands()], PN.getNumOperands()), |
| ReservedSpace(PN.getNumOperands()) { |
| Use *OL = OperandList; |
| for (unsigned i = 0, e = PN.getNumOperands(); i != e; i+=2) { |
| OL[i].init(PN.getOperand(i), this); |
| OL[i+1].init(PN.getOperand(i+1), this); |
| } |
| } |
| |
| PHINode::~PHINode() { |
| delete [] OperandList; |
| } |
| |
| // removeIncomingValue - Remove an incoming value. This is useful if a |
| // predecessor basic block is deleted. |
| Value *PHINode::removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty) { |
| unsigned NumOps = getNumOperands(); |
| Use *OL = OperandList; |
| assert(Idx*2 < NumOps && "BB not in PHI node!"); |
| Value *Removed = OL[Idx*2]; |
| |
| // Move everything after this operand down. |
| // |
| // FIXME: we could just swap with the end of the list, then erase. However, |
| // client might not expect this to happen. The code as it is thrashes the |
| // use/def lists, which is kinda lame. |
| for (unsigned i = (Idx+1)*2; i != NumOps; i += 2) { |
| OL[i-2] = OL[i]; |
| OL[i-2+1] = OL[i+1]; |
| } |
| |
| // Nuke the last value. |
| OL[NumOps-2].set(0); |
| OL[NumOps-2+1].set(0); |
| NumOperands = NumOps-2; |
| |
| // If the PHI node is dead, because it has zero entries, nuke it now. |
| if (NumOps == 2 && DeletePHIIfEmpty) { |
| // If anyone is using this PHI, make them use a dummy value instead... |
| replaceAllUsesWith(UndefValue::get(getType())); |
| eraseFromParent(); |
| } |
| return Removed; |
| } |
| |
| /// resizeOperands - resize operands - This adjusts the length of the operands |
| /// list according to the following behavior: |
| /// 1. If NumOps == 0, grow the operand list in response to a push_back style |
| /// of operation. This grows the number of ops by 1.5 times. |
| /// 2. If NumOps > NumOperands, reserve space for NumOps operands. |
| /// 3. If NumOps == NumOperands, trim the reserved space. |
| /// |
| void PHINode::resizeOperands(unsigned NumOps) { |
| if (NumOps == 0) { |
| NumOps = (getNumOperands())*3/2; |
| if (NumOps < 4) NumOps = 4; // 4 op PHI nodes are VERY common. |
| } else if (NumOps*2 > NumOperands) { |
| // No resize needed. |
| if (ReservedSpace >= NumOps) return; |
| } else if (NumOps == NumOperands) { |
| if (ReservedSpace == NumOps) return; |
| } else { |
| return; |
| } |
| |
| ReservedSpace = NumOps; |
| Use *NewOps = new Use[NumOps]; |
| Use *OldOps = OperandList; |
| for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { |
| NewOps[i].init(OldOps[i], this); |
| OldOps[i].set(0); |
| } |
| delete [] OldOps; |
| OperandList = NewOps; |
| } |
| |
| /// hasConstantValue - If the specified PHI node always merges together the same |
| /// value, return the value, otherwise return null. |
| /// |
| Value *PHINode::hasConstantValue(bool AllowNonDominatingInstruction) const { |
| // If the PHI node only has one incoming value, eliminate the PHI node... |
| 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. |
| // |
| Value *InVal = 0; |
| bool HasUndefInput = false; |
| for (unsigned i = 0, e = getNumIncomingValues(); i != e; ++i) |
| if (isa<UndefValue>(getIncomingValue(i))) { |
| HasUndefInput = true; |
| } 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 |
| // loop, so kill the PHI. |
| // |
| if (InVal == 0) InVal = UndefValue::get(getType()); |
| |
| // If we have a PHI node like phi(X, undef, X), where X is defined by some |
| // instruction, we cannot always return X as the result of the PHI node. Only |
| // do this if X is not an instruction (thus it must dominate the PHI block), |
| // or if the client is prepared to deal with this possibility. |
| if (HasUndefInput && !AllowNonDominatingInstruction) |
| if (Instruction *IV = dyn_cast<Instruction>(InVal)) |
| // If it's in the entry block, it dominates everything. |
| if (IV->getParent() != &IV->getParent()->getParent()->getEntryBlock() || |
| isa<InvokeInst>(IV)) |
| return 0; // Cannot guarantee that InVal dominates this PHINode. |
| |
| // All of the incoming values are the same, return the value now. |
| return InVal; |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // CallInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| CallInst::~CallInst() { |
| delete [] OperandList; |
| } |
| |
| void CallInst::init(Value *Func, Value* const *Params, unsigned NumParams) { |
| NumOperands = NumParams+1; |
| Use *OL = OperandList = new Use[NumParams+1]; |
| OL[0].init(Func, this); |
| |
| const FunctionType *FTy = |
| cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType()); |
| FTy = FTy; // silence warning. |
| |
| assert((NumParams == FTy->getNumParams() || |
| (FTy->isVarArg() && NumParams > FTy->getNumParams())) && |
| "Calling a function with bad signature!"); |
| for (unsigned i = 0; i != NumParams; ++i) { |
| assert((i >= FTy->getNumParams() || |
| FTy->getParamType(i) == Params[i]->getType()) && |
| "Calling a function with a bad signature!"); |
| OL[i+1].init(Params[i], this); |
| } |
| } |
| |
| void CallInst::init(Value *Func, Value *Actual1, Value *Actual2) { |
| NumOperands = 3; |
| Use *OL = OperandList = new Use[3]; |
| OL[0].init(Func, this); |
| OL[1].init(Actual1, this); |
| OL[2].init(Actual2, this); |
| |
| const FunctionType *FTy = |
| cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType()); |
| FTy = FTy; // silence warning. |
| |
| assert((FTy->getNumParams() == 2 || |
| (FTy->isVarArg() && FTy->getNumParams() < 2)) && |
| "Calling a function with bad signature"); |
| assert((0 >= FTy->getNumParams() || |
| FTy->getParamType(0) == Actual1->getType()) && |
| "Calling a function with a bad signature!"); |
| assert((1 >= FTy->getNumParams() || |
| FTy->getParamType(1) == Actual2->getType()) && |
| "Calling a function with a bad signature!"); |
| } |
| |
| void CallInst::init(Value *Func, Value *Actual) { |
| NumOperands = 2; |
| Use *OL = OperandList = new Use[2]; |
| OL[0].init(Func, this); |
| OL[1].init(Actual, this); |
| |
| const FunctionType *FTy = |
| cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType()); |
| FTy = FTy; // silence warning. |
| |
| assert((FTy->getNumParams() == 1 || |
| (FTy->isVarArg() && FTy->getNumParams() == 0)) && |
| "Calling a function with bad signature"); |
| assert((0 == FTy->getNumParams() || |
| FTy->getParamType(0) == Actual->getType()) && |
| "Calling a function with a bad signature!"); |
| } |
| |
| void CallInst::init(Value *Func) { |
| NumOperands = 1; |
| Use *OL = OperandList = new Use[1]; |
| OL[0].init(Func, this); |
| |
| const FunctionType *FTy = |
| cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType()); |
| FTy = FTy; // silence warning. |
| |
| assert(FTy->getNumParams() == 0 && "Calling a function with bad signature"); |
| } |
| |
| CallInst::CallInst(Value *Func, Value* Actual, const std::string &Name, |
| Instruction *InsertBefore) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, 0, 0, InsertBefore) { |
| init(Func, Actual); |
| setName(Name); |
| } |
| |
| CallInst::CallInst(Value *Func, Value* Actual, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, 0, 0, InsertAtEnd) { |
| init(Func, Actual); |
| setName(Name); |
| } |
| CallInst::CallInst(Value *Func, const std::string &Name, |
| Instruction *InsertBefore) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, 0, 0, InsertBefore) { |
| init(Func); |
| setName(Name); |
| } |
| |
| CallInst::CallInst(Value *Func, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, 0, 0, InsertAtEnd) { |
| init(Func); |
| setName(Name); |
| } |
| |
| CallInst::CallInst(const CallInst &CI) |
| : Instruction(CI.getType(), Instruction::Call, new Use[CI.getNumOperands()], |
| CI.getNumOperands()) { |
| setParamAttrs(CI.getParamAttrs()); |
| SubclassData = CI.SubclassData; |
| Use *OL = OperandList; |
| Use *InOL = CI.OperandList; |
| for (unsigned i = 0, e = CI.getNumOperands(); i != e; ++i) |
| OL[i].init(InOL[i], this); |
| } |
| |
| bool CallInst::paramHasAttr(unsigned i, ParameterAttributes attr) const { |
| if (ParamAttrs.paramHasAttr(i, attr)) |
| return true; |
| if (const Function *F = getCalledFunction()) |
| return F->paramHasAttr(i, attr); |
| return false; |
| } |
| |
| void CallInst::setDoesNotThrow(bool doesNotThrow) { |
| PAListPtr PAL = getParamAttrs(); |
| if (doesNotThrow) |
| PAL = PAL.addAttr(0, ParamAttr::NoUnwind); |
| else |
| PAL = PAL.removeAttr(0, ParamAttr::NoUnwind); |
| setParamAttrs(PAL); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // InvokeInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| InvokeInst::~InvokeInst() { |
| delete [] OperandList; |
| } |
| |
| void InvokeInst::init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException, |
| Value* const *Args, unsigned NumArgs) { |
| NumOperands = 3+NumArgs; |
| Use *OL = OperandList = new Use[3+NumArgs]; |
| OL[0].init(Fn, this); |
| OL[1].init(IfNormal, this); |
| OL[2].init(IfException, this); |
| const FunctionType *FTy = |
| cast<FunctionType>(cast<PointerType>(Fn->getType())->getElementType()); |
| FTy = FTy; // silence warning. |
| |
| assert(((NumArgs == FTy->getNumParams()) || |
| (FTy->isVarArg() && NumArgs > FTy->getNumParams())) && |
| "Calling a function with bad signature"); |
| |
| for (unsigned i = 0, e = NumArgs; i != e; i++) { |
| assert((i >= FTy->getNumParams() || |
| FTy->getParamType(i) == Args[i]->getType()) && |
| "Invoking a function with a bad signature!"); |
| |
| OL[i+3].init(Args[i], this); |
| } |
| } |
| |
| InvokeInst::InvokeInst(const InvokeInst &II) |
| : TerminatorInst(II.getType(), Instruction::Invoke, |
| new Use[II.getNumOperands()], II.getNumOperands()) { |
| setParamAttrs(II.getParamAttrs()); |
| SubclassData = II.SubclassData; |
| Use *OL = OperandList, *InOL = II.OperandList; |
| for (unsigned i = 0, e = II.getNumOperands(); i != e; ++i) |
| OL[i].init(InOL[i], this); |
| } |
| |
| BasicBlock *InvokeInst::getSuccessorV(unsigned idx) const { |
| return getSuccessor(idx); |
| } |
| unsigned InvokeInst::getNumSuccessorsV() const { |
| return getNumSuccessors(); |
| } |
| void InvokeInst::setSuccessorV(unsigned idx, BasicBlock *B) { |
| return setSuccessor(idx, B); |
| } |
| |
| bool InvokeInst::paramHasAttr(unsigned i, ParameterAttributes attr) const { |
| if (ParamAttrs.paramHasAttr(i, attr)) |
| return true; |
| if (const Function *F = getCalledFunction()) |
| return F->paramHasAttr(i, attr); |
| return false; |
| } |
| |
| void InvokeInst::setDoesNotThrow(bool doesNotThrow) { |
| PAListPtr PAL = getParamAttrs(); |
| if (doesNotThrow) |
| PAL = PAL.addAttr(0, ParamAttr::NoUnwind); |
| else |
| PAL = PAL.removeAttr(0, ParamAttr::NoUnwind); |
| setParamAttrs(PAL); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // ReturnInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| ReturnInst::ReturnInst(const ReturnInst &RI) |
| : TerminatorInst(Type::VoidTy, Instruction::Ret, |
| &RetVal, 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) { |
| if (retVal) |
| init(&retVal, 1); |
| } |
| ReturnInst::ReturnInst(Value *retVal, BasicBlock *InsertAtEnd) |
| : TerminatorInst(Type::VoidTy, Instruction::Ret, &RetVal, 0, InsertAtEnd) { |
| 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; |
| } |
| |
| Use *OL = OperandList = new Use[NumOperands]; |
| for (unsigned i = 0; i < NumOperands; ++i) { |
| Value *V = *retVals++; |
| assert(!isa<BasicBlock>(V) && |
| "Cannot return basic block. Probably using the incorrect ctor"); |
| OL[i].init(V, this); |
| } |
| } |
| |
| 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. |
| void ReturnInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) { |
| assert(0 && "ReturnInst has no successors!"); |
| } |
| |
| BasicBlock *ReturnInst::getSuccessorV(unsigned idx) const { |
| assert(0 && "ReturnInst has no successors!"); |
| abort(); |
| return 0; |
| } |
| |
| ReturnInst::~ReturnInst() { |
| if (NumOperands > 1) |
| delete [] OperandList; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // UnwindInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| UnwindInst::UnwindInst(Instruction *InsertBefore) |
| : TerminatorInst(Type::VoidTy, Instruction::Unwind, 0, 0, InsertBefore) { |
| } |
| UnwindInst::UnwindInst(BasicBlock *InsertAtEnd) |
| : TerminatorInst(Type::VoidTy, Instruction::Unwind, 0, 0, InsertAtEnd) { |
| } |
| |
| |
| unsigned UnwindInst::getNumSuccessorsV() const { |
| return getNumSuccessors(); |
| } |
| |
| void UnwindInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) { |
| assert(0 && "UnwindInst has no successors!"); |
| } |
| |
| BasicBlock *UnwindInst::getSuccessorV(unsigned idx) const { |
| assert(0 && "UnwindInst has no successors!"); |
| abort(); |
| return 0; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // UnreachableInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| UnreachableInst::UnreachableInst(Instruction *InsertBefore) |
| : TerminatorInst(Type::VoidTy, Instruction::Unreachable, 0, 0, InsertBefore) { |
| } |
| UnreachableInst::UnreachableInst(BasicBlock *InsertAtEnd) |
| : TerminatorInst(Type::VoidTy, Instruction::Unreachable, 0, 0, InsertAtEnd) { |
| } |
| |
| unsigned UnreachableInst::getNumSuccessorsV() const { |
| return getNumSuccessors(); |
| } |
| |
| void UnreachableInst::setSuccessorV(unsigned idx, BasicBlock *NewSucc) { |
| assert(0 && "UnwindInst has no successors!"); |
| } |
| |
| BasicBlock *UnreachableInst::getSuccessorV(unsigned idx) const { |
| assert(0 && "UnwindInst has no successors!"); |
| abort(); |
| return 0; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // BranchInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void BranchInst::AssertOK() { |
| if (isConditional()) |
| assert(getCondition()->getType() == Type::Int1Ty && |
| "May only branch on boolean predicates!"); |
| } |
| |
| BranchInst::BranchInst(BasicBlock *IfTrue, Instruction *InsertBefore) |
| : TerminatorInst(Type::VoidTy, Instruction::Br, Ops, 1, InsertBefore) { |
| assert(IfTrue != 0 && "Branch destination may not be null!"); |
| Ops[0].init(reinterpret_cast<Value*>(IfTrue), this); |
| } |
| BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond, |
| Instruction *InsertBefore) |
| : TerminatorInst(Type::VoidTy, Instruction::Br, Ops, 3, InsertBefore) { |
| Ops[0].init(reinterpret_cast<Value*>(IfTrue), this); |
| Ops[1].init(reinterpret_cast<Value*>(IfFalse), this); |
| Ops[2].init(Cond, this); |
| #ifndef NDEBUG |
| AssertOK(); |
| #endif |
| } |
| |
| BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd) |
| : TerminatorInst(Type::VoidTy, Instruction::Br, Ops, 1, InsertAtEnd) { |
| assert(IfTrue != 0 && "Branch destination may not be null!"); |
| Ops[0].init(reinterpret_cast<Value*>(IfTrue), this); |
| } |
| |
| BranchInst::BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond, |
| BasicBlock *InsertAtEnd) |
| : TerminatorInst(Type::VoidTy, Instruction::Br, Ops, 3, InsertAtEnd) { |
| Ops[0].init(reinterpret_cast<Value*>(IfTrue), this); |
| Ops[1].init(reinterpret_cast<Value*>(IfFalse), this); |
| Ops[2].init(Cond, this); |
| #ifndef NDEBUG |
| AssertOK(); |
| #endif |
| } |
| |
| |
| BranchInst::BranchInst(const BranchInst &BI) : |
| TerminatorInst(Type::VoidTy, Instruction::Br, Ops, BI.getNumOperands()) { |
| OperandList[0].init(BI.getOperand(0), this); |
| if (BI.getNumOperands() != 1) { |
| assert(BI.getNumOperands() == 3 && "BR can have 1 or 3 operands!"); |
| OperandList[1].init(BI.getOperand(1), this); |
| OperandList[2].init(BI.getOperand(2), this); |
| } |
| } |
| |
| BasicBlock *BranchInst::getSuccessorV(unsigned idx) const { |
| return getSuccessor(idx); |
| } |
| unsigned BranchInst::getNumSuccessorsV() const { |
| return getNumSuccessors(); |
| } |
| void BranchInst::setSuccessorV(unsigned idx, BasicBlock *B) { |
| setSuccessor(idx, B); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // AllocationInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| static Value *getAISize(Value *Amt) { |
| if (!Amt) |
| Amt = ConstantInt::get(Type::Int32Ty, 1); |
| else { |
| assert(!isa<BasicBlock>(Amt) && |
| "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!"); |
| } |
| return Amt; |
| } |
| |
| AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, |
| unsigned Align, const std::string &Name, |
| Instruction *InsertBefore) |
| : UnaryInstruction(PointerType::getUnqual(Ty), iTy, getAISize(ArraySize), |
| InsertBefore) { |
| setAlignment(Align); |
| assert(Ty != Type::VoidTy && "Cannot allocate void!"); |
| setName(Name); |
| } |
| |
| AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, |
| unsigned Align, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : UnaryInstruction(PointerType::getUnqual(Ty), iTy, getAISize(ArraySize), |
| InsertAtEnd) { |
| setAlignment(Align); |
| assert(Ty != Type::VoidTy && "Cannot allocate void!"); |
| setName(Name); |
| } |
| |
| // Out of line virtual method, so the vtable, etc has a home. |
| AllocationInst::~AllocationInst() { |
| } |
| |
| void AllocationInst::setAlignment(unsigned Align) { |
| assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!"); |
| SubclassData = Log2_32(Align) + 1; |
| assert(getAlignment() == Align && "Alignment representation error!"); |
| } |
| |
| bool AllocationInst::isArrayAllocation() const { |
| if (ConstantInt *CI = dyn_cast<ConstantInt>(getOperand(0))) |
| return CI->getZExtValue() != 1; |
| return true; |
| } |
| |
| const Type *AllocationInst::getAllocatedType() const { |
| return getType()->getElementType(); |
| } |
| |
| AllocaInst::AllocaInst(const AllocaInst &AI) |
| : AllocationInst(AI.getType()->getElementType(), (Value*)AI.getOperand(0), |
| Instruction::Alloca, AI.getAlignment()) { |
| } |
| |
| MallocInst::MallocInst(const MallocInst &MI) |
| : AllocationInst(MI.getType()->getElementType(), (Value*)MI.getOperand(0), |
| Instruction::Malloc, MI.getAlignment()) { |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // FreeInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void FreeInst::AssertOK() { |
| assert(isa<PointerType>(getOperand(0)->getType()) && |
| "Can not free something of nonpointer type!"); |
| } |
| |
| FreeInst::FreeInst(Value *Ptr, Instruction *InsertBefore) |
| : UnaryInstruction(Type::VoidTy, Free, Ptr, InsertBefore) { |
| AssertOK(); |
| } |
| |
| FreeInst::FreeInst(Value *Ptr, BasicBlock *InsertAtEnd) |
| : UnaryInstruction(Type::VoidTy, Free, Ptr, InsertAtEnd) { |
| AssertOK(); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // LoadInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void LoadInst::AssertOK() { |
| assert(isa<PointerType>(getOperand(0)->getType()) && |
| "Ptr must have pointer type."); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBef) |
| : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Ptr, InsertBef) { |
| setVolatile(false); |
| setAlignment(0); |
| AssertOK(); |
| setName(Name); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAE) |
| : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Ptr, InsertAE) { |
| setVolatile(false); |
| setAlignment(0); |
| AssertOK(); |
| setName(Name); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, |
| Instruction *InsertBef) |
| : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Ptr, InsertBef) { |
| setVolatile(isVolatile); |
| setAlignment(0); |
| AssertOK(); |
| setName(Name); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, |
| unsigned Align, Instruction *InsertBef) |
| : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Ptr, InsertBef) { |
| setVolatile(isVolatile); |
| setAlignment(Align); |
| AssertOK(); |
| setName(Name); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, |
| unsigned Align, BasicBlock *InsertAE) |
| : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Ptr, InsertAE) { |
| setVolatile(isVolatile); |
| setAlignment(Align); |
| AssertOK(); |
| setName(Name); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, |
| BasicBlock *InsertAE) |
| : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Ptr, InsertAE) { |
| setVolatile(isVolatile); |
| setAlignment(0); |
| AssertOK(); |
| setName(Name); |
| } |
| |
| |
| |
| LoadInst::LoadInst(Value *Ptr, const char *Name, Instruction *InsertBef) |
| : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Ptr, InsertBef) { |
| setVolatile(false); |
| setAlignment(0); |
| AssertOK(); |
| if (Name && Name[0]) setName(Name); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAE) |
| : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Ptr, InsertAE) { |
| setVolatile(false); |
| setAlignment(0); |
| AssertOK(); |
| if (Name && Name[0]) setName(Name); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const char *Name, bool isVolatile, |
| Instruction *InsertBef) |
| : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Ptr, InsertBef) { |
| setVolatile(isVolatile); |
| setAlignment(0); |
| AssertOK(); |
| if (Name && Name[0]) setName(Name); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const char *Name, bool isVolatile, |
| BasicBlock *InsertAE) |
| : UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Ptr, InsertAE) { |
| setVolatile(isVolatile); |
| setAlignment(0); |
| AssertOK(); |
| if (Name && Name[0]) setName(Name); |
| } |
| |
| void LoadInst::setAlignment(unsigned Align) { |
| assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!"); |
| SubclassData = (SubclassData & 1) | ((Log2_32(Align)+1)<<1); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // StoreInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void StoreInst::AssertOK() { |
| assert(isa<PointerType>(getOperand(1)->getType()) && |
| "Ptr must have pointer type!"); |
| assert(getOperand(0)->getType() == |
| cast<PointerType>(getOperand(1)->getType())->getElementType() |
| && "Ptr must be a pointer to Val type!"); |
| } |
| |
| |
| StoreInst::StoreInst(Value *val, Value *addr, Instruction *InsertBefore) |
| : Instruction(Type::VoidTy, Store, Ops, 2, InsertBefore) { |
| Ops[0].init(val, this); |
| Ops[1].init(addr, this); |
| setVolatile(false); |
| setAlignment(0); |
| AssertOK(); |
| } |
| |
| StoreInst::StoreInst(Value *val, Value *addr, BasicBlock *InsertAtEnd) |
| : Instruction(Type::VoidTy, Store, Ops, 2, InsertAtEnd) { |
| Ops[0].init(val, this); |
| Ops[1].init(addr, this); |
| setVolatile(false); |
| setAlignment(0); |
| AssertOK(); |
| } |
| |
| StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile, |
| Instruction *InsertBefore) |
| : Instruction(Type::VoidTy, Store, Ops, 2, InsertBefore) { |
| Ops[0].init(val, this); |
| Ops[1].init(addr, this); |
| setVolatile(isVolatile); |
| setAlignment(0); |
| AssertOK(); |
| } |
| |
| StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile, |
| unsigned Align, Instruction *InsertBefore) |
| : Instruction(Type::VoidTy, Store, Ops, 2, InsertBefore) { |
| Ops[0].init(val, this); |
| Ops[1].init(addr, this); |
| setVolatile(isVolatile); |
| setAlignment(Align); |
| AssertOK(); |
| } |
| |
| StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile, |
| unsigned Align, BasicBlock *InsertAtEnd) |
| : Instruction(Type::VoidTy, Store, Ops, 2, InsertAtEnd) { |
| Ops[0].init(val, this); |
| Ops[1].init(addr, this); |
| setVolatile(isVolatile); |
| setAlignment(Align); |
| AssertOK(); |
| } |
| |
| StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile, |
| BasicBlock *InsertAtEnd) |
| : Instruction(Type::VoidTy, Store, Ops, 2, InsertAtEnd) { |
| Ops[0].init(val, this); |
| Ops[1].init(addr, this); |
| setVolatile(isVolatile); |
| setAlignment(0); |
| AssertOK(); |
| } |
| |
| void StoreInst::setAlignment(unsigned Align) { |
| assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!"); |
| SubclassData = (SubclassData & 1) | ((Log2_32(Align)+1)<<1); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // GetElementPtrInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| static unsigned retrieveAddrSpace(const Value *Val) { |
| return cast<PointerType>(Val->getType())->getAddressSpace(); |
| } |
| |
| void GetElementPtrInst::init(Value *Ptr, Value* const *Idx, unsigned NumIdx) { |
| NumOperands = 1+NumIdx; |
| Use *OL = OperandList = new Use[NumOperands]; |
| OL[0].init(Ptr, this); |
| |
| for (unsigned i = 0; i != NumIdx; ++i) |
| OL[i+1].init(Idx[i], this); |
| } |
| |
| void GetElementPtrInst::init(Value *Ptr, Value *Idx) { |
| NumOperands = 2; |
| Use *OL = OperandList = new Use[2]; |
| OL[0].init(Ptr, this); |
| OL[1].init(Idx, this); |
| } |
| |
| GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx, |
| const std::string &Name, Instruction *InBe) |
| : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(),Idx)), |
| retrieveAddrSpace(Ptr)), |
| GetElementPtr, 0, 0, InBe) { |
| init(Ptr, Idx); |
| setName(Name); |
| } |
| |
| GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx, |
| const std::string &Name, BasicBlock *IAE) |
| : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(),Idx)), |
| retrieveAddrSpace(Ptr)), |
| GetElementPtr, 0, 0, IAE) { |
| init(Ptr, Idx); |
| setName(Name); |
| } |
| |
| GetElementPtrInst::~GetElementPtrInst() { |
| delete[] OperandList; |
| } |
| |
| // getIndexedType - Returns the type of the element that would be loaded with |
| // a load instruction with the specified parameters. |
| // |
| // A null type is returned if the indices are invalid for the specified |
| // pointer type. |
| // |
| const Type* GetElementPtrInst::getIndexedType(const Type *Ptr, |
| Value* const *Idxs, |
| unsigned NumIdx, |
| bool AllowCompositeLeaf) { |
| if (!isa<PointerType>(Ptr)) return 0; // Type isn't a pointer type! |
| |
| // Handle the special case of the empty set index set... |
| if (NumIdx == 0) { |
| if (AllowCompositeLeaf || |
| cast<PointerType>(Ptr)->getElementType()->isFirstClassType()) |
| return cast<PointerType>(Ptr)->getElementType(); |
| else |
| return 0; |
| } |
| |
| unsigned CurIdx = 0; |
| while (const CompositeType *CT = dyn_cast<CompositeType>(Ptr)) { |
| if (NumIdx == CurIdx) { |
| if (AllowCompositeLeaf || CT->isFirstClassType()) return Ptr; |
| return 0; // Can't load a whole structure or array!?!? |
| } |
| |
| Value *Index = Idxs[CurIdx++]; |
| if (isa<PointerType>(CT) && CurIdx != 1) |
| return 0; // Can only index into pointer types at the first index! |
| if (!CT->indexValid(Index)) return 0; |
| Ptr = CT->getTypeAtIndex(Index); |
| |
| // If the new type forwards to another type, then it is in the middle |
| // of being refined to another type (and hence, may have dropped all |
| // references to what it was using before). So, use the new forwarded |
| // type. |
| if (const Type * Ty = Ptr->getForwardedType()) { |
| Ptr = Ty; |
| } |
| } |
| return CurIdx == NumIdx ? Ptr : 0; |
| } |
| |
| const Type* GetElementPtrInst::getIndexedType(const Type *Ptr, Value *Idx) { |
| const PointerType *PTy = dyn_cast<PointerType>(Ptr); |
| if (!PTy) return 0; // Type isn't a pointer type! |
| |
| // Check the pointer index. |
| if (!PTy->indexValid(Idx)) return 0; |
| |
| return PTy->getElementType(); |
| } |
| |
| |
| /// hasAllZeroIndices - Return true if all of the indices of this GEP are |
| /// zeros. If so, the result pointer and the first operand have the same |
| /// value, just potentially different types. |
| bool GetElementPtrInst::hasAllZeroIndices() const { |
| for (unsigned i = 1, e = getNumOperands(); i != e; ++i) { |
| if (ConstantInt *CI = dyn_cast<ConstantInt>(getOperand(i))) { |
| if (!CI->isZero()) return false; |
| } else { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /// hasAllConstantIndices - Return true if all of the indices of this GEP are |
| /// constant integers. If so, the result pointer and the first operand have |
| /// a constant offset between them. |
| bool GetElementPtrInst::hasAllConstantIndices() const { |
| for (unsigned i = 1, e = getNumOperands(); i != e; ++i) { |
| if (!isa<ConstantInt>(getOperand(i))) |
| return false; |
| } |
| return true; |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // ExtractElementInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| ExtractElementInst::ExtractElementInst(Value *Val, Value *Index, |
| const std::string &Name, |
| Instruction *InsertBef) |
| : Instruction(cast<VectorType>(Val->getType())->getElementType(), |
| ExtractElement, Ops, 2, InsertBef) { |
| assert(isValidOperands(Val, Index) && |
| "Invalid extractelement instruction operands!"); |
| Ops[0].init(Val, this); |
| Ops[1].init(Index, this); |
| setName(Name); |
| } |
| |
| ExtractElementInst::ExtractElementInst(Value *Val, unsigned IndexV, |
| const std::string &Name, |
| Instruction *InsertBef) |
| : Instruction(cast<VectorType>(Val->getType())->getElementType(), |
| ExtractElement, Ops, 2, InsertBef) { |
| Constant *Index = ConstantInt::get(Type::Int32Ty, IndexV); |
| assert(isValidOperands(Val, Index) && |
| "Invalid extractelement instruction operands!"); |
| Ops[0].init(Val, this); |
| Ops[1].init(Index, this); |
| setName(Name); |
| } |
| |
| |
| ExtractElementInst::ExtractElementInst(Value *Val, Value *Index, |
| const std::string &Name, |
| BasicBlock *InsertAE) |
| : Instruction(cast<VectorType>(Val->getType())->getElementType(), |
| ExtractElement, Ops, 2, InsertAE) { |
| assert(isValidOperands(Val, Index) && |
| "Invalid extractelement instruction operands!"); |
| |
| Ops[0].init(Val, this); |
| Ops[1].init(Index, this); |
| setName(Name); |
| } |
| |
| ExtractElementInst::ExtractElementInst(Value *Val, unsigned IndexV, |
| const std::string &Name, |
| BasicBlock *InsertAE) |
| : Instruction(cast<VectorType>(Val->getType())->getElementType(), |
| ExtractElement, Ops, 2, InsertAE) { |
| Constant *Index = ConstantInt::get(Type::Int32Ty, IndexV); |
| assert(isValidOperands(Val, Index) && |
| "Invalid extractelement instruction operands!"); |
| |
| Ops[0].init(Val, this); |
| Ops[1].init(Index, this); |
| setName(Name); |
| } |
| |
| |
| bool ExtractElementInst::isValidOperands(const Value *Val, const Value *Index) { |
| if (!isa<VectorType>(Val->getType()) || Index->getType() != Type::Int32Ty) |
| return false; |
| return true; |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // InsertElementInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| InsertElementInst::InsertElementInst(const InsertElementInst &IE) |
| : Instruction(IE.getType(), InsertElement, Ops, 3) { |
| Ops[0].init(IE.Ops[0], this); |
| Ops[1].init(IE.Ops[1], this); |
| Ops[2].init(IE.Ops[2], this); |
| } |
| InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, Value *Index, |
| const std::string &Name, |
| Instruction *InsertBef) |
| : Instruction(Vec->getType(), InsertElement, Ops, 3, InsertBef) { |
| assert(isValidOperands(Vec, Elt, Index) && |
| "Invalid insertelement instruction operands!"); |
| Ops[0].init(Vec, this); |
| Ops[1].init(Elt, this); |
| Ops[2].init(Index, this); |
| setName(Name); |
| } |
| |
| InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, unsigned IndexV, |
| const std::string &Name, |
| Instruction *InsertBef) |
| : Instruction(Vec->getType(), InsertElement, Ops, 3, InsertBef) { |
| Constant *Index = ConstantInt::get(Type::Int32Ty, IndexV); |
| assert(isValidOperands(Vec, Elt, Index) && |
| "Invalid insertelement instruction operands!"); |
| Ops[0].init(Vec, this); |
| Ops[1].init(Elt, this); |
| Ops[2].init(Index, this); |
| setName(Name); |
| } |
| |
| |
| InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, Value *Index, |
| const std::string &Name, |
| BasicBlock *InsertAE) |
| : Instruction(Vec->getType(), InsertElement, Ops, 3, InsertAE) { |
| assert(isValidOperands(Vec, Elt, Index) && |
| "Invalid insertelement instruction operands!"); |
| |
| Ops[0].init(Vec, this); |
| Ops[1].init(Elt, this); |
| Ops[2].init(Index, this); |
| setName(Name); |
| } |
| |
| InsertElementInst::InsertElementInst(Value *Vec, Value *Elt, unsigned IndexV, |
| const std::string &Name, |
| BasicBlock *InsertAE) |
| : Instruction(Vec->getType(), InsertElement, Ops, 3, InsertAE) { |
| Constant *Index = ConstantInt::get(Type::Int32Ty, IndexV); |
| assert(isValidOperands(Vec, Elt, Index) && |
| "Invalid insertelement instruction operands!"); |
| |
| Ops[0].init(Vec, this); |
| Ops[1].init(Elt, this); |
| Ops[2].init(Index, this); |
| setName(Name); |
| } |
| |
| bool InsertElementInst::isValidOperands(const Value *Vec, const Value *Elt, |
| const Value *Index) { |
| if (!isa<VectorType>(Vec->getType())) |
| return false; // First operand of insertelement must be vector type. |
| |
| if (Elt->getType() != cast<VectorType>(Vec->getType())->getElementType()) |
| return false;// Second operand of insertelement must be vector element type. |
| |
| if (Index->getType() != Type::Int32Ty) |
| return false; // Third operand of insertelement must be uint. |
| return true; |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // ShuffleVectorInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| ShuffleVectorInst::ShuffleVectorInst(const ShuffleVectorInst &SV) |
| : Instruction(SV.getType(), ShuffleVector, Ops, 3) { |
| Ops[0].init(SV.Ops[0], this); |
| Ops[1].init(SV.Ops[1], this); |
| Ops[2].init(SV.Ops[2], this); |
| } |
| |
| ShuffleVectorInst::ShuffleVectorInst(Value *V1, Value *V2, Value *Mask, |
| const std::string &Name, |
| Instruction *InsertBefore) |
| : Instruction(V1->getType(), ShuffleVector, Ops, 3, InsertBefore) { |
| assert(isValidOperands(V1, V2, Mask) && |
| "Invalid shuffle vector instruction operands!"); |
| Ops[0].init(V1, this); |
| Ops[1].init(V2, this); |
| Ops[2].init(Mask, this); |
| setName(Name); |
| } |
| |
| ShuffleVectorInst::ShuffleVectorInst(Value *V1, Value *V2, Value *Mask, |
| const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : Instruction(V1->getType(), ShuffleVector, Ops, 3, InsertAtEnd) { |
| assert(isValidOperands(V1, V2, Mask) && |
| "Invalid shuffle vector instruction operands!"); |
| |
| Ops[0].init(V1, this); |
| Ops[1].init(V2, this); |
| Ops[2].init(Mask, this); |
| setName(Name); |
| } |
| |
| bool ShuffleVectorInst::isValidOperands(const Value *V1, const Value *V2, |
| const Value *Mask) { |
| if (!isa<VectorType>(V1->getType()) || |
| V1->getType() != V2->getType()) |
| return false; |
| |
| const VectorType *MaskTy = dyn_cast<VectorType>(Mask->getType()); |
| if (!isa<Constant>(Mask) || MaskTy == 0 || |
| MaskTy->getElementType() != Type::Int32Ty || |
| MaskTy->getNumElements() != |
| cast<VectorType>(V1->getType())->getNumElements()) |
| return false; |
| return true; |
| } |
| |
| /// getMaskValue - Return the index from the shuffle mask for the specified |
| /// output result. This is either -1 if the element is undef or a number less |
| /// than 2*numelements. |
| int ShuffleVectorInst::getMaskValue(unsigned i) const { |
| const Constant *Mask = cast<Constant>(getOperand(2)); |
| if (isa<UndefValue>(Mask)) return -1; |
| if (isa<ConstantAggregateZero>(Mask)) return 0; |
| const ConstantVector *MaskCV = cast<ConstantVector>(Mask); |
| assert(i < MaskCV->getNumOperands() && "Index out of range"); |
| |
| if (isa<UndefValue>(MaskCV->getOperand(i))) |
| return -1; |
| return cast<ConstantInt>(MaskCV->getOperand(i))->getZExtValue(); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // BinaryOperator Class |
| //===----------------------------------------------------------------------===// |
| |
| BinaryOperator::BinaryOperator(BinaryOps iType, Value *S1, Value *S2, |
| const Type *Ty, const std::string &Name, |
| Instruction *InsertBefore) |
| : Instruction(Ty, iType, Ops, 2, InsertBefore) { |
| Ops[0].init(S1, this); |
| Ops[1].init(S2, this); |
| init(iType); |
| setName(Name); |
| } |
| |
| BinaryOperator::BinaryOperator(BinaryOps iType, Value *S1, Value *S2, |
| const Type *Ty, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : Instruction(Ty, iType, Ops, 2, InsertAtEnd) { |
| Ops[0].init(S1, this); |
| Ops[1].init(S2, this); |
| init(iType); |
| setName(Name); |
| } |
| |
| |
| void BinaryOperator::init(BinaryOps iType) { |
| Value *LHS = getOperand(0), *RHS = getOperand(1); |
| LHS = LHS; RHS = RHS; // Silence warnings. |
| assert(LHS->getType() == RHS->getType() && |
| "Binary operator operand types must match!"); |
| #ifndef NDEBUG |
| switch (iType) { |
| case Add: case Sub: |
| case Mul: |
| assert(getType() == LHS->getType() && |
| "Arithmetic operation should return same type as operands!"); |
| assert((getType()->isInteger() || getType()->isFloatingPoint() || |
| isa<VectorType>(getType())) && |
| "Tried to create an arithmetic operation on a non-arithmetic type!"); |
| break; |
| case UDiv: |
| case SDiv: |
| assert(getType() == LHS->getType() && |
| "Arithmetic operation should return same type as operands!"); |
| assert((getType()->isInteger() || (isa<VectorType>(getType()) && |
| cast<VectorType>(getType())->getElementType()->isInteger())) && |
| "Incorrect operand type (not integer) for S/UDIV"); |
| break; |
| case FDiv: |
| assert(getType() == LHS->getType() && |
| "Arithmetic operation should return same type as operands!"); |
| assert((getType()->isFloatingPoint() || (isa<VectorType>(getType()) && |
| cast<VectorType>(getType())->getElementType()->isFloatingPoint())) |
| && "Incorrect operand type (not floating point) for FDIV"); |
| break; |
| case URem: |
| case SRem: |
| assert(getType() == LHS->getType() && |
| "Arithmetic operation should return same type as operands!"); |
| assert((getType()->isInteger() || (isa<VectorType>(getType()) && |
| cast<VectorType>(getType())->getElementType()->isInteger())) && |
| "Incorrect operand type (not integer) for S/UREM"); |
| break; |
| case FRem: |
| assert(getType() == LHS->getType() && |
| "Arithmetic operation should return same type as operands!"); |
| assert((getType()->isFloatingPoint() || (isa<VectorType>(getType()) && |
| cast<VectorType>(getType())->getElementType()->isFloatingPoint())) |
| && "Incorrect operand type (not floating point) for FREM"); |
| break; |
| case Shl: |
| case LShr: |
| case AShr: |
| assert(getType() == LHS->getType() && |
| "Shift operation should return same type as operands!"); |
| assert(getType()->isInteger() && |
| "Shift operation requires integer operands"); |
| break; |
| case And: case Or: |
| case Xor: |
| assert(getType() == LHS->getType() && |
| "Logical operation should return same type as operands!"); |
| assert((getType()->isInteger() || |
| (isa<VectorType>(getType()) && |
| cast<VectorType>(getType())->getElementType()->isInteger())) && |
| "Tried to create a logical operation on a non-integral type!"); |
| break; |
| default: |
| break; |
| } |
| #endif |
| } |
| |
| BinaryOperator *BinaryOperator::create(BinaryOps Op, Value *S1, Value *S2, |
| const std::string &Name, |
| Instruction *InsertBefore) { |
| assert(S1->getType() == S2->getType() && |
| "Cannot create binary operator with two operands of differing type!"); |
| return new BinaryOperator(Op, S1, S2, S1->getType(), Name, InsertBefore); |
| } |
| |
| BinaryOperator *BinaryOperator::create(BinaryOps Op, Value *S1, Value *S2, |
| const std::string &Name, |
| BasicBlock *InsertAtEnd) { |
| BinaryOperator *Res = create(Op, S1, S2, Name); |
| InsertAtEnd->getInstList().push_back(Res); |
| return Res; |
| } |
| |
| BinaryOperator *BinaryOperator::createNeg(Value *Op, const std::string &Name, |
| Instruction *InsertBefore) { |
| Value *zero = ConstantExpr::getZeroValueForNegationExpr(Op->getType()); |
| return new BinaryOperator(Instruction::Sub, |
| zero, Op, |
| Op->getType(), Name, InsertBefore); |
| } |
| |
| BinaryOperator *BinaryOperator::createNeg(Value *Op, const std::string &Name, |
| BasicBlock *InsertAtEnd) { |
| Value *zero = ConstantExpr::getZeroValueForNegationExpr(Op->getType()); |
| return new BinaryOperator(Instruction::Sub, |
| zero, Op, |
| Op->getType(), Name, InsertAtEnd); |
| } |
| |
| BinaryOperator *BinaryOperator::createNot(Value *Op, const std::string &Name, |
| Instruction *InsertBefore) { |
| Constant *C; |
| if (const VectorType *PTy = dyn_cast<VectorType>(Op->getType())) { |
| C = ConstantInt::getAllOnesValue(PTy->getElementType()); |
| C = ConstantVector::get(std::vector<Constant*>(PTy->getNumElements(), C)); |
| } else { |
| C = ConstantInt::getAllOnesValue(Op->getType()); |
| } |
| |
| return new BinaryOperator(Instruction::Xor, Op, C, |
| Op->getType(), Name, InsertBefore); |
| } |
| |
| BinaryOperator *BinaryOperator::createNot(Value *Op, const std::string &Name, |
| BasicBlock *InsertAtEnd) { |
| Constant *AllOnes; |
| if (const VectorType *PTy = dyn_cast<VectorType>(Op->getType())) { |
| // Create a vector of all ones values. |
| Constant *Elt = ConstantInt::getAllOnesValue(PTy->getElementType()); |
| AllOnes = |
| ConstantVector::get(std::vector<Constant*>(PTy->getNumElements(), Elt)); |
| } else { |
| AllOnes = ConstantInt::getAllOnesValue(Op->getType()); |
| } |
| |
| return new BinaryOperator(Instruction::Xor, Op, AllOnes, |
| Op->getType(), Name, InsertAtEnd); |
| } |
| |
| |
| // isConstantAllOnes - Helper function for several functions below |
| static inline bool isConstantAllOnes(const Value *V) { |
| if (const ConstantInt *CI = dyn_cast<ConstantInt>(V)) |
| return CI->isAllOnesValue(); |
| if (const ConstantVector *CV = dyn_cast<ConstantVector>(V)) |
| return CV->isAllOnesValue(); |
| return false; |
| } |
| |
| bool BinaryOperator::isNeg(const Value *V) { |
| if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V)) |
| if (Bop->getOpcode() == Instruction::Sub) |
| return Bop->getOperand(0) == |
| ConstantExpr::getZeroValueForNegationExpr(Bop->getType()); |
| return false; |
| } |
| |
| bool BinaryOperator::isNot(const Value *V) { |
| if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V)) |
| return (Bop->getOpcode() == Instruction::Xor && |
| (isConstantAllOnes(Bop->getOperand(1)) || |
| isConstantAllOnes(Bop->getOperand(0)))); |
| return false; |
| } |
| |
| Value *BinaryOperator::getNegArgument(Value *BinOp) { |
| assert(isNeg(BinOp) && "getNegArgument from non-'neg' instruction!"); |
| return cast<BinaryOperator>(BinOp)->getOperand(1); |
| } |
| |
| const Value *BinaryOperator::getNegArgument(const Value *BinOp) { |
| return getNegArgument(const_cast<Value*>(BinOp)); |
| } |
| |
| Value *BinaryOperator::getNotArgument(Value *BinOp) { |
| assert(isNot(BinOp) && "getNotArgument on non-'not' instruction!"); |
| BinaryOperator *BO = cast<BinaryOperator>(BinOp); |
| Value *Op0 = BO->getOperand(0); |
| Value *Op1 = BO->getOperand(1); |
| if (isConstantAllOnes(Op0)) return Op1; |
| |
| assert(isConstantAllOnes(Op1)); |
| return Op0; |
| } |
| |
| const Value *BinaryOperator::getNotArgument(const Value *BinOp) { |
| return getNotArgument(const_cast<Value*>(BinOp)); |
| } |
| |
| |
| // swapOperands - Exchange the two operands to this instruction. This |
| // instruction is safe to use on any binary instruction and does not |
| // modify the semantics of the instruction. If the instruction is |
| // order dependent (SetLT f.e.) the opcode is changed. |
| // |
| bool BinaryOperator::swapOperands() { |
| if (!isCommutative()) |
| return true; // Can't commute operands |
| std::swap(Ops[0], Ops[1]); |
| return false; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // CastInst Class |
| //===----------------------------------------------------------------------===// |
| |
| // Just determine if this cast only deals with integral->integral conversion. |
| bool CastInst::isIntegerCast() const { |
| switch (getOpcode()) { |
| default: return false; |
| case Instruction::ZExt: |
| case Instruction::SExt: |
| case Instruction::Trunc: |
| return true; |
| case Instruction::BitCast: |
| return getOperand(0)->getType()->isInteger() && getType()->isInteger(); |
| } |
| } |
| |
| bool CastInst::isLosslessCast() const { |
| // Only BitCast can be lossless, exit fast if we're not BitCast |
| if (getOpcode() != Instruction::BitCast) |
| return false; |
| |
| // Identity cast is always lossless |
| const Type* SrcTy = getOperand(0)->getType(); |
| const Type* DstTy = getType(); |
| if (SrcTy == DstTy) |
| return true; |
| |
| // Pointer to pointer is always lossless. |
| if (isa<PointerType>(SrcTy)) |
| return isa<PointerType>(DstTy); |
| return false; // Other types have no identity values |
| } |
| |
| /// This function determines if the CastInst does not require any bits to be |
| /// changed in order to effect the cast. Essentially, it identifies cases where |
| /// no code gen is necessary for the cast, hence the name no-op cast. For |
| /// example, the following are all no-op casts: |
| /// # bitcast uint %X, int |
| /// # bitcast uint* %x, sbyte* |
| /// # bitcast vector< 2 x int > %x, vector< 4 x short> |
| /// # ptrtoint uint* %x, uint ; on 32-bit plaforms only |
| /// @brief Determine if a cast is a no-op. |
| bool CastInst::isNoopCast(const Type *IntPtrTy) const { |
| switch (getOpcode()) { |
| default: |
| assert(!"Invalid CastOp"); |
| case Instruction::Trunc: |
| case Instruction::ZExt: |
| case Instruction::SExt: |
| case Instruction::FPTrunc: |
| case Instruction::FPExt: |
| case Instruction::UIToFP: |
| case Instruction::SIToFP: |
| case Instruction::FPToUI: |
| case Instruction::FPToSI: |
| return false; // These always modify bits |
| case Instruction::BitCast: |
| return true; // BitCast never modifies bits. |
| case Instruction::PtrToInt: |
| return IntPtrTy->getPrimitiveSizeInBits() == |
| getType()->getPrimitiveSizeInBits(); |
| case Instruction::IntToPtr: |
| return IntPtrTy->getPrimitiveSizeInBits() == |
| getOperand(0)->getType()->getPrimitiveSizeInBits(); |
| } |
| } |
| |
| /// This function determines if a pair of casts can be eliminated and what |
| /// opcode should be used in the elimination. This assumes that there are two |
| /// instructions like this: |
| /// * %F = firstOpcode SrcTy %x to MidTy |
| /// * %S = secondOpcode MidTy %F to DstTy |
| /// The function returns a resultOpcode so these two casts can be replaced with: |
| /// * %Replacement = resultOpcode %SrcTy %x to DstTy |
| /// If no such cast is permited, the function returns 0. |
| unsigned CastInst::isEliminableCastPair( |
| Instruction::CastOps firstOp, Instruction::CastOps secondOp, |
| const Type *SrcTy, const Type *MidTy, const Type *DstTy, const Type *IntPtrTy) |
| { |
| // Define the 144 possibilities for these two cast instructions. The values |
| // in this matrix determine what to do in a given situation and select the |
| // case in the switch below. The rows correspond to firstOp, the columns |
| // correspond to secondOp. In looking at the table below, keep in mind |
| // the following cast properties: |
| // |
| // Size Compare Source Destination |
| // Operator Src ? Size Type Sign Type Sign |
| // -------- ------------ ------------------- --------------------- |
| // TRUNC > Integer Any Integral Any |
| // ZEXT < Integral Unsigned Integer Any |
| // SEXT < Integral Signed Integer Any |
| // FPTOUI n/a FloatPt n/a Integral Unsigned |
| // FPTOSI n/a FloatPt n/a Integral Signed |
| // UITOFP n/a Integral Unsigned FloatPt n/a |
| // SITOFP n/a Integral Signed FloatPt n/a |
| // FPTRUNC > FloatPt n/a FloatPt n/a |
| // FPEXT < FloatPt n/a FloatPt n/a |
| // PTRTOINT n/a Pointer n/a Integral Unsigned |
| // INTTOPTR n/a Integral Unsigned Pointer n/a |
| // BITCONVERT = FirstClass n/a FirstClass n/a |
| // |
| // NOTE: some transforms are safe, but we consider them to be non-profitable. |
| // For example, we could merge "fptoui double to uint" + "zext uint to ulong", |
| // into "fptoui double to ulong", but this loses information about the range |
| // of the produced value (we no longer know the top-part is all zeros). |
| // Further this conversion is often much more expensive for typical hardware, |
| // and causes issues when building libgcc. We disallow fptosi+sext for the |
| // same reason. |
| const unsigned numCastOps = |
| Instruction::CastOpsEnd - Instruction::CastOpsBegin; |
| static const uint8_t CastResults[numCastOps][numCastOps] = { |
| // T F F U S F F P I B -+ |
| // R Z S P P I I T P 2 N T | |
| // U E E 2 2 2 2 R E I T C +- secondOp |
| // N X X U S F F N X N 2 V | |
| // C T T I I P P C T T P T -+ |
| { 1, 0, 0,99,99, 0, 0,99,99,99, 0, 3 }, // Trunc -+ |
| { 8, 1, 9,99,99, 2, 0,99,99,99, 2, 3 }, // ZExt | |
| { 8, 0, 1,99,99, 0, 2,99,99,99, 0, 3 }, // SExt | |
| { 0, 0, 0,99,99, 0, 0,99,99,99, 0, 3 }, // FPToUI | |
| { 0, 0, 0,99,99, 0, 0,99,99,99, 0, 3 }, // FPToSI | |
| { 99,99,99, 0, 0,99,99, 0, 0,99,99, 4 }, // UIToFP +- firstOp |
| { 99,99,99, 0, 0,99,99, 0, 0,99,99, 4 }, // SIToFP | |
| { 99,99,99, 0, 0,99,99, 1, 0,99,99, 4 }, // FPTrunc | |
| { 99,99,99, 2, 2,99,99,10, 2,99,99, 4 }, // FPExt | |
| { 1, 0, 0,99,99, 0, 0,99,99,99, 7, 3 }, // PtrToInt | |
| { 99,99,99,99,99,99,99,99,99,13,99,12 }, // IntToPtr | |
| { 5, 5, 5, 6, 6, 5, 5, 6, 6,11, 5, 1 }, // BitCast -+ |
| }; |
| |
| int ElimCase = CastResults[firstOp-Instruction::CastOpsBegin] |
| [secondOp-Instruction::CastOpsBegin]; |
| switch (ElimCase) { |
| case 0: |
| // categorically disallowed |
| return 0; |
| case 1: |
| // allowed, use first cast's opcode |
| return firstOp; |
| case 2: |
| // allowed, use second cast's opcode |
| return secondOp; |
| case 3: |
| // no-op cast in second op implies firstOp as long as the DestTy |
| // is integer |
| if (DstTy->isInteger()) |
| return firstOp; |
| return 0; |
| case 4: |
| // no-op cast in second op implies firstOp as long as the DestTy |
| // is floating point |
| if (DstTy->isFloatingPoint()) |
| return firstOp; |
| return 0; |
| case 5: |
| // no-op cast in first op implies secondOp as long as the SrcTy |
| // is an integer |
| if (SrcTy->isInteger()) |
| return secondOp; |
| return 0; |
| case 6: |
| // no-op cast in first op implies secondOp as long as the SrcTy |
| // is a floating point |
| if (SrcTy->isFloatingPoint()) |
| return secondOp; |
| return 0; |
| case 7: { |
| // ptrtoint, inttoptr -> bitcast (ptr -> ptr) if int size is >= ptr size |
| unsigned PtrSize = IntPtrTy->getPrimitiveSizeInBits(); |
| unsigned MidSize = MidTy->getPrimitiveSizeInBits(); |
| if (MidSize >= PtrSize) |
| return Instruction::BitCast; |
| return 0; |
| } |
| case 8: { |
| // ext, trunc -> bitcast, if the SrcTy and DstTy are same size |
| // ext, trunc -> ext, if sizeof(SrcTy) < sizeof(DstTy) |
| // ext, trunc -> trunc, if sizeof(SrcTy) > sizeof(DstTy) |
| unsigned SrcSize = SrcTy->getPrimitiveSizeInBits(); |
| unsigned DstSize = DstTy->getPrimitiveSizeInBits(); |
| if (SrcSize == DstSize) |
| return Instruction::BitCast; |
| else if (SrcSize < DstSize) |
| return firstOp; |
| return secondOp; |
| } |
| case 9: // zext, sext -> zext, because sext can't sign extend after zext |
| return Instruction::ZExt; |
| case 10: |
| // fpext followed by ftrunc is allowed if the bit size returned to is |
| // the same as the original, in which case its just a bitcast |
| if (SrcTy == DstTy) |
| return Instruction::BitCast; |
| return 0; // If the types are not the same we can't eliminate it. |
| case 11: |
| // bitcast followed by ptrtoint is allowed as long as the bitcast |
| // is a pointer to pointer cast. |
| if (isa<PointerType>(SrcTy) && isa<PointerType>(MidTy)) |
| return secondOp; |
| return 0; |
| case 12: |
| // inttoptr, bitcast -> intptr if bitcast is a ptr to ptr cast |
| if (isa<PointerType>(MidTy) && isa<PointerType>(DstTy)) |
| return firstOp; |
| return 0; |
| case 13: { |
| // inttoptr, ptrtoint -> bitcast if SrcSize<=PtrSize and SrcSize==DstSize |
| unsigned PtrSize = IntPtrTy->getPrimitiveSizeInBits(); |
| unsigned SrcSize = SrcTy->getPrimitiveSizeInBits(); |
| unsigned DstSize = DstTy->getPrimitiveSizeInBits(); |
| if (SrcSize <= PtrSize && SrcSize == DstSize) |
| return Instruction::BitCast; |
| return 0; |
| } |
| case 99: |
| // cast combination can't happen (error in input). This is for all cases |
| // where the MidTy is not the same for the two cast instructions. |
| assert(!"Invalid Cast Combination"); |
| return 0; |
| default: |
| assert(!"Error in CastResults table!!!"); |
| return 0; |
| } |
| return 0; |
| } |
| |
| CastInst *CastInst::create(Instruction::CastOps op, Value *S, const Type *Ty, |
| const std::string &Name, Instruction *InsertBefore) { |
| // Construct and return the appropriate CastInst subclass |
| switch (op) { |
| case Trunc: return new TruncInst (S, Ty, Name, InsertBefore); |
| case ZExt: return new ZExtInst (S, Ty, Name, InsertBefore); |
| case SExt: return new SExtInst (S, Ty, Name, InsertBefore); |
| case FPTrunc: return new FPTruncInst (S, Ty, Name, InsertBefore); |
| case FPExt: return new FPExtInst (S, Ty, Name, InsertBefore); |
| case UIToFP: return new UIToFPInst (S, Ty, Name, InsertBefore); |
| case SIToFP: return new SIToFPInst (S, Ty, Name, InsertBefore); |
| case FPToUI: return new FPToUIInst (S, Ty, Name, InsertBefore); |
| case FPToSI: return new FPToSIInst (S, Ty, Name, InsertBefore); |
| case PtrToInt: return new PtrToIntInst (S, Ty, Name, InsertBefore); |
| case IntToPtr: return new IntToPtrInst (S, Ty, Name, InsertBefore); |
| case BitCast: return new BitCastInst (S, Ty, Name, InsertBefore); |
| default: |
| assert(!"Invalid opcode provided"); |
| } |
| return 0; |
| } |
| |
| CastInst *CastInst::create(Instruction::CastOps op, Value *S, const Type *Ty, |
| const std::string &Name, BasicBlock *InsertAtEnd) { |
| // Construct and return the appropriate CastInst subclass |
| switch (op) { |
| case Trunc: return new TruncInst (S, Ty, Name, InsertAtEnd); |
| case ZExt: return new ZExtInst (S, Ty, Name, InsertAtEnd); |
| case SExt: return new SExtInst (S, Ty, Name, InsertAtEnd); |
| case FPTrunc: return new FPTruncInst (S, Ty, Name, InsertAtEnd); |
| case FPExt: return new FPExtInst (S, Ty, Name, InsertAtEnd); |
| case UIToFP: return new UIToFPInst (S, Ty, Name, InsertAtEnd); |
| case SIToFP: return new SIToFPInst (S, Ty, Name, InsertAtEnd); |
| case FPToUI: return new FPToUIInst (S, Ty, Name, InsertAtEnd); |
| case FPToSI: return new FPToSIInst (S, Ty, Name, InsertAtEnd); |
| case PtrToInt: return new PtrToIntInst (S, Ty, Name, InsertAtEnd); |
| case IntToPtr: return new IntToPtrInst (S, Ty, Name, InsertAtEnd); |
| case BitCast: return new BitCastInst (S, Ty, Name, InsertAtEnd); |
| default: |
| assert(!"Invalid opcode provided"); |
| } |
| return 0; |
| } |
| |
| CastInst *CastInst::createZExtOrBitCast(Value *S, const Type *Ty, |
| const std::string &Name, |
| Instruction *InsertBefore) { |
| if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits()) |
| return create(Instruction::BitCast, S, Ty, Name, InsertBefore); |
| return create(Instruction::ZExt, S, Ty, Name, InsertBefore); |
| } |
| |
| CastInst *CastInst::createZExtOrBitCast(Value *S, const Type *Ty, |
| const std::string &Name, |
| BasicBlock *InsertAtEnd) { |
| if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits()) |
| return create(Instruction::BitCast, S, Ty, Name, InsertAtEnd); |
| return create(Instruction::ZExt, S, Ty, Name, InsertAtEnd); |
| } |
| |
| CastInst *CastInst::createSExtOrBitCast(Value *S, const Type *Ty, |
| const std::string &Name, |
| Instruction *InsertBefore) { |
| if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits()) |
| return create(Instruction::BitCast, S, Ty, Name, InsertBefore); |
| return create(Instruction::SExt, S, Ty, Name, InsertBefore); |
| } |
| |
| CastInst *CastInst::createSExtOrBitCast(Value *S, const Type *Ty, |
| const std::string &Name, |
| BasicBlock *InsertAtEnd) { |
| if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits()) |
| return create(Instruction::BitCast, S, Ty, Name, InsertAtEnd); |
| return create(Instruction::SExt, S, Ty, Name, InsertAtEnd); |
| } |
| |
| CastInst *CastInst::createTruncOrBitCast(Value *S, const Type *Ty, |
| const std::string &Name, |
| Instruction *InsertBefore) { |
| if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits()) |
| return create(Instruction::BitCast, S, Ty, Name, InsertBefore); |
| return create(Instruction::Trunc, S, Ty, Name, InsertBefore); |
| } |
| |
| CastInst *CastInst::createTruncOrBitCast(Value *S, const Type *Ty, |
| const std::string &Name, |
| BasicBlock *InsertAtEnd) { |
| if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits()) |
| return create(Instruction::BitCast, S, Ty, Name, InsertAtEnd); |
| return create(Instruction::Trunc, S, Ty, Name, InsertAtEnd); |
| } |
| |
| CastInst *CastInst::createPointerCast(Value *S, const Type *Ty, |
| const std::string &Name, |
| BasicBlock *InsertAtEnd) { |
| assert(isa<PointerType>(S->getType()) && "Invalid cast"); |
| assert((Ty->isInteger() || isa<PointerType>(Ty)) && |
| "Invalid cast"); |
| |
| if (Ty->isInteger()) |
| return create(Instruction::PtrToInt, S, Ty, Name, InsertAtEnd); |
| return create(Instruction::BitCast, S, Ty, Name, InsertAtEnd); |
| } |
| |
| /// @brief Create a BitCast or a PtrToInt cast instruction |
| CastInst *CastInst::createPointerCast(Value *S, const Type *Ty, |
| const std::string &Name, |
| Instruction *InsertBefore) { |
| assert(isa<PointerType>(S->getType()) && "Invalid cast"); |
| assert((Ty->isInteger() || isa<PointerType>(Ty)) && |
| "Invalid cast"); |
| |
| if (Ty->isInteger()) |
| return create(Instruction::PtrToInt, S, Ty, Name, InsertBefore); |
| return create(Instruction::BitCast, S, Ty, Name, InsertBefore); |
| } |
| |
| CastInst *CastInst::createIntegerCast(Value *C, const Type *Ty, |
| bool isSigned, const std::string &Name, |
| Instruction *InsertBefore) { |
| assert(C->getType()->isInteger() && Ty->isInteger() && "Invalid cast"); |
| unsigned SrcBits = C->getType()->getPrimitiveSizeInBits(); |
| unsigned DstBits = Ty->getPrimitiveSizeInBits(); |
| Instruction::CastOps opcode = |
| (SrcBits == DstBits ? Instruction::BitCast : |
| (SrcBits > DstBits ? Instruction::Trunc : |
| (isSigned ? Instruction::SExt : Instruction::ZExt))); |
| return create(opcode, C, Ty, Name, InsertBefore); |
| } |
| |
| CastInst *CastInst::createIntegerCast(Value *C, const Type *Ty, |
| bool isSigned, const std::string &Name, |
| BasicBlock *InsertAtEnd) { |
| assert(C->getType()->isInteger() && Ty->isInteger() && "Invalid cast"); |
| unsigned SrcBits = C->getType()->getPrimitiveSizeInBits(); |
| unsigned DstBits = Ty->getPrimitiveSizeInBits(); |
| Instruction::CastOps opcode = |
| (SrcBits == DstBits ? Instruction::BitCast : |
| (SrcBits > DstBits ? Instruction::Trunc : |
| (isSigned ? Instruction::SExt : Instruction::ZExt))); |
| return create(opcode, C, Ty, Name, InsertAtEnd); |
| } |
| |
| CastInst *CastInst::createFPCast(Value *C, const Type *Ty, |
| const std::string &Name, |
| Instruction *InsertBefore) { |
| assert(C->getType()->isFloatingPoint() && Ty->isFloatingPoint() && |
| "Invalid cast"); |
| unsigned SrcBits = C->getType()->getPrimitiveSizeInBits(); |
| unsigned DstBits = Ty->getPrimitiveSizeInBits(); |
| Instruction::CastOps opcode = |
| (SrcBits == DstBits ? Instruction::BitCast : |
| (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt)); |
| return create(opcode, C, Ty, Name, InsertBefore); |
| } |
| |
| CastInst *CastInst::createFPCast(Value *C, const Type *Ty, |
| const std::string &Name, |
| BasicBlock *InsertAtEnd) { |
| assert(C->getType()->isFloatingPoint() && Ty->isFloatingPoint() && |
| "Invalid cast"); |
| unsigned SrcBits = C->getType()->getPrimitiveSizeInBits(); |
| unsigned DstBits = Ty->getPrimitiveSizeInBits(); |
| Instruction::CastOps opcode = |
| (SrcBits == DstBits ? Instruction::BitCast : |
| (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt)); |
| 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<VectorType>(SrcTy)) { |
| // Casting from vector |
| return DestBits == PTy->getBitWidth(); |
| } else { // Casting from something else |
| return isa<PointerType>(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<VectorType>(SrcTy)) { |
| // Casting from vector |
| return DestBits == PTy->getBitWidth(); |
| } else { // Casting from something else |
| return false; |
| } |
| } else if (const VectorType *DestPTy = dyn_cast<VectorType>(DestTy)) { |
| // Casting to vector |
| if (const VectorType *SrcPTy = dyn_cast<VectorType>(SrcTy)) { |
| // Casting from vector |
| return DestPTy->getBitWidth() == SrcPTy->getBitWidth(); |
| } else { // Casting from something else |
| return DestPTy->getBitWidth() == SrcBits; |
| } |
| } else if (isa<PointerType>(DestTy)) { // Casting to pointer |
| if (isa<PointerType>(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) { |
| // Get the bit sizes, we'll need these |
| const Type *SrcTy = Src->getType(); |
| 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 |
| if (DestBits < SrcBits) |
| return Trunc; // int -> smaller int |
| else if (DestBits > SrcBits) { // its an extension |
| if (SrcIsSigned) |
| return SExt; // signed -> SEXT |
| else |
| return ZExt; // unsigned -> ZEXT |
| } else { |
| return BitCast; // Same size, No-op cast |
| } |
| } else if (SrcTy->isFloatingPoint()) { // Casting from floating pt |
| if (DestIsSigned) |
| return FPToSI; // FP -> sint |
| else |
| return FPToUI; // FP -> uint |
| } else if (const VectorType *PTy = dyn_cast<VectorType>(SrcTy)) { |
| assert(DestBits == PTy->getBitWidth() && |
| "Casting vector to integer of different width"); |
| return BitCast; // Same size, no-op cast |
| } else { |
| assert(isa<PointerType>(SrcTy) && |
| "Casting from a value that is not first-class type"); |
| return PtrToInt; // ptr -> int |
| } |
| } else if (DestTy->isFloatingPoint()) { // Casting to floating pt |
| if (SrcTy->isInteger()) { // Casting from integral |
| if (SrcIsSigned) |
| return SIToFP; // sint -> FP |
| else |
| return UIToFP; // uint -> FP |
| } else if (SrcTy->isFloatingPoint()) { // Casting from floating pt |
| if (DestBits < SrcBits) { |
| return FPTrunc; // FP -> smaller FP |
| } else if (DestBits > SrcBits) { |
| return FPExt; // FP -> larger FP |
| } else { |
| return BitCast; // same size, no-op cast |
| } |
| } else if (const VectorType *PTy = dyn_cast<VectorType>(SrcTy)) { |
| assert(DestBits == PTy->getBitWidth() && |
| "Casting vector to floating point of different width"); |
| return BitCast; // same size, no-op cast |
| } else { |
| assert(0 && "Casting pointer or non-first class to float"); |
| } |
| } else if (const VectorType *DestPTy = dyn_cast<VectorType>(DestTy)) { |
| if (const VectorType *SrcPTy = dyn_cast<VectorType>(SrcTy)) { |
| assert(DestPTy->getBitWidth() == SrcPTy->getBitWidth() && |
| "Casting vector to vector of different widths"); |
| return BitCast; // vector -> vector |
| } else if (DestPTy->getBitWidth() == SrcBits) { |
| return BitCast; // float/int -> vector |
| } else { |
| assert(!"Illegal cast to vector (wrong type or size)"); |
| } |
| } else if (isa<PointerType>(DestTy)) { |
| if (isa<PointerType>(SrcTy)) { |
| return BitCast; // ptr -> ptr |
| } else if (SrcTy->isInteger()) { |
| return IntToPtr; // int -> ptr |
| } else { |
| assert(!"Casting pointer to other than pointer or int"); |
| } |
| } else { |
| assert(!"Casting to type that is not first-class"); |
| } |
| |
| // If we fall through to here we probably hit an assertion cast above |
| // and assertions are not turned on. Anything we return is an error, so |
| // BitCast is as good a choice as any. |
| return BitCast; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // CastInst SubClass Constructors |
| //===----------------------------------------------------------------------===// |
| |
| /// Check that the construction parameters for a CastInst are correct. This |
| /// could be broken out into the separate constructors but it is useful to have |
| /// it in one place and to eliminate the redundant code for getting the sizes |
| /// of the types involved. |
| bool |
| CastInst::castIsValid(Instruction::CastOps op, Value *S, const Type *DstTy) { |
| |
| // Check for type sanity on the arguments |
| const Type *SrcTy = S->getType(); |
| if (!SrcTy->isFirstClassType() || !DstTy->isFirstClassType()) |
| return false; |
| |
| // Get the size of the types in bits, we'll need this later |
| unsigned SrcBitSize = SrcTy->getPrimitiveSizeInBits(); |
| unsigned DstBitSize = DstTy->getPrimitiveSizeInBits(); |
| |
| // Switch on the opcode provided |
| switch (op) { |
| default: return false; // This is an input error |
| case Instruction::Trunc: |
| return SrcTy->isInteger() && DstTy->isInteger()&& SrcBitSize > DstBitSize; |
| case Instruction::ZExt: |
| return SrcTy->isInteger() && DstTy->isInteger()&& SrcBitSize < DstBitSize; |
| case Instruction::SExt: |
| return SrcTy->isInteger() && DstTy->isInteger()&& SrcBitSize < DstBitSize; |
| case Instruction::FPTrunc: |
| return SrcTy->isFloatingPoint() && DstTy->isFloatingPoint() && |
| SrcBitSize > DstBitSize; |
| case Instruction::FPExt: |
| return SrcTy->isFloatingPoint() && DstTy->isFloatingPoint() && |
| SrcBitSize < DstBitSize; |
| case Instruction::UIToFP: |
| case Instruction::SIToFP: |
| if (const VectorType *SVTy = dyn_cast<VectorType>(SrcTy)) { |
| if (const VectorType *DVTy = dyn_cast<VectorType>(DstTy)) { |
| return SVTy->getElementType()->isInteger() && |
| DVTy->getElementType()->isFloatingPoint() && |
| SVTy->getNumElements() == DVTy->getNumElements(); |
| } |
| } |
| return SrcTy->isInteger() && DstTy->isFloatingPoint(); |
| case Instruction::FPToUI: |
| case Instruction::FPToSI: |
| if (const VectorType *SVTy = dyn_cast<VectorType>(SrcTy)) { |
| if (const VectorType *DVTy = dyn_cast<VectorType>(DstTy)) { |
| return SVTy->getElementType()->isFloatingPoint() && |
| DVTy->getElementType()->isInteger() && |
| SVTy->getNumElements() == DVTy->getNumElements(); |
| } |
| } |
| return SrcTy->isFloatingPoint() && DstTy->isInteger(); |
| case Instruction::PtrToInt: |
| return isa<PointerType>(SrcTy) && DstTy->isInteger(); |
| case Instruction::IntToPtr: |
| return SrcTy->isInteger() && isa<PointerType>(DstTy); |
| case Instruction::BitCast: |
| // BitCast implies a no-op cast of type only. No bits change. |
| // However, you can't cast pointers to anything but pointers. |
| if (isa<PointerType>(SrcTy) != isa<PointerType>(DstTy)) |
| return false; |
| |
| // 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; |
| } |
| } |
| |
| TruncInst::TruncInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, Trunc, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal Trunc"); |
| } |
| |
| TruncInst::TruncInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, Trunc, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal Trunc"); |
| } |
| |
| ZExtInst::ZExtInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, ZExt, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal ZExt"); |
| } |
| |
| ZExtInst::ZExtInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, ZExt, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal ZExt"); |
| } |
| SExtInst::SExtInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, SExt, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal SExt"); |
| } |
| |
| SExtInst::SExtInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, SExt, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal SExt"); |
| } |
| |
| FPTruncInst::FPTruncInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, FPTrunc, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPTrunc"); |
| } |
| |
| FPTruncInst::FPTruncInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, FPTrunc, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPTrunc"); |
| } |
| |
| FPExtInst::FPExtInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, FPExt, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPExt"); |
| } |
| |
| FPExtInst::FPExtInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, FPExt, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPExt"); |
| } |
| |
| UIToFPInst::UIToFPInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, UIToFP, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal UIToFP"); |
| } |
| |
| UIToFPInst::UIToFPInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, UIToFP, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal UIToFP"); |
| } |
| |
| SIToFPInst::SIToFPInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, SIToFP, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal SIToFP"); |
| } |
| |
| SIToFPInst::SIToFPInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, SIToFP, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal SIToFP"); |
| } |
| |
| FPToUIInst::FPToUIInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, FPToUI, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToUI"); |
| } |
| |
| FPToUIInst::FPToUIInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, FPToUI, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToUI"); |
| } |
| |
| FPToSIInst::FPToSIInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, FPToSI, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToSI"); |
| } |
| |
| FPToSIInst::FPToSIInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, FPToSI, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal FPToSI"); |
| } |
| |
| PtrToIntInst::PtrToIntInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, PtrToInt, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal PtrToInt"); |
| } |
| |
| PtrToIntInst::PtrToIntInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, PtrToInt, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal PtrToInt"); |
| } |
| |
| IntToPtrInst::IntToPtrInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, IntToPtr, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal IntToPtr"); |
| } |
| |
| IntToPtrInst::IntToPtrInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, IntToPtr, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal IntToPtr"); |
| } |
| |
| BitCastInst::BitCastInst( |
| Value *S, const Type *Ty, const std::string &Name, Instruction *InsertBefore |
| ) : CastInst(Ty, BitCast, S, Name, InsertBefore) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal BitCast"); |
| } |
| |
| BitCastInst::BitCastInst( |
| Value *S, const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd |
| ) : CastInst(Ty, BitCast, S, Name, InsertAtEnd) { |
| assert(castIsValid(getOpcode(), S, Ty) && "Illegal BitCast"); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // CmpInst Classes |
| //===----------------------------------------------------------------------===// |
| |
| CmpInst::CmpInst(OtherOps op, unsigned short predicate, Value *LHS, Value *RHS, |
| const std::string &Name, Instruction *InsertBefore) |
| : Instruction(Type::Int1Ty, op, Ops, 2, InsertBefore) { |
| Ops[0].init(LHS, this); |
| Ops[1].init(RHS, this); |
| SubclassData = predicate; |
| setName(Name); |
| if (op == Instruction::ICmp) { |
| assert(predicate >= ICmpInst::FIRST_ICMP_PREDICATE && |
| predicate <= ICmpInst::LAST_ICMP_PREDICATE && |
| "Invalid ICmp predicate value"); |
| const Type* Op0Ty = getOperand(0)->getType(); |
| const Type* Op1Ty = getOperand(1)->getType(); |
| 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<PointerType>(Op0Ty)) && |
| "Invalid operand types for ICmp instruction"); |
| return; |
| } |
| assert(op == Instruction::FCmp && "Invalid CmpInst opcode"); |
| assert(predicate <= FCmpInst::LAST_FCMP_PREDICATE && |
| "Invalid FCmp predicate value"); |
| const Type* Op0Ty = getOperand(0)->getType(); |
| const Type* Op1Ty = getOperand(1)->getType(); |
| assert(Op0Ty == Op1Ty && |
| "Both operands to FCmp instruction are not of the same type!"); |
| // Check that the operands are the right type |
| assert(Op0Ty->isFloatingPoint() && |
| "Invalid operand types for FCmp instruction"); |
| } |
| |
| CmpInst::CmpInst(OtherOps op, unsigned short predicate, Value *LHS, Value *RHS, |
| const std::string &Name, BasicBlock *InsertAtEnd) |
| : Instruction(Type::Int1Ty, op, Ops, 2, InsertAtEnd) { |
| Ops[0].init(LHS, this); |
| Ops[1].init(RHS, this); |
| SubclassData = predicate; |
| setName(Name); |
| if (op == Instruction::ICmp) { |
| assert(predicate >= ICmpInst::FIRST_ICMP_PREDICATE && |
| predicate <= ICmpInst::LAST_ICMP_PREDICATE && |
| "Invalid ICmp predicate value"); |
| |
| const Type* Op0Ty = getOperand(0)->getType(); |
| const Type* Op1Ty = getOperand(1)->getType(); |
| 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<PointerType>(Op0Ty)) && |
| "Invalid operand types for ICmp instruction"); |
| return; |
| } |
| assert(op == Instruction::FCmp && "Invalid CmpInst opcode"); |
| assert(predicate <= FCmpInst::LAST_FCMP_PREDICATE && |
| "Invalid FCmp predicate value"); |
| const Type* Op0Ty = getOperand(0)->getType(); |
| const Type* Op1Ty = getOperand(1)->getType(); |
| assert(Op0Ty == Op1Ty && |
| "Both operands to FCmp instruction are not of the same type!"); |
| // Check that the operands are the right type |
| assert(Op0Ty->isFloatingPoint() && |
| "Invalid operand types for FCmp instruction"); |
| } |
| |
| CmpInst * |
| CmpInst::create(OtherOps Op, unsigned short predicate, Value *S1, Value *S2, |
| const std::string &Name, Instruction *InsertBefore) { |
| if (Op == Instruction::ICmp) { |
| return new ICmpInst(ICmpInst::Predicate(predicate), S1, S2, Name, |
| InsertBefore); |
| } |
| return new FCmpInst(FCmpInst::Predicate(predicate), S1, S2, Name, |
| InsertBefore); |
| } |
| |
| CmpInst * |
| CmpInst::create(OtherOps Op, unsigned short predicate, Value *S1, Value *S2, |
| const std::string &Name, BasicBlock *InsertAtEnd) { |
| if (Op == Instruction::ICmp) { |
| return new ICmpInst(ICmpInst::Predicate(predicate), S1, S2, Name, |
| InsertAtEnd); |
| } |
| return new FCmpInst(FCmpInst::Predicate(predicate), S1, S2, Name, |
| InsertAtEnd); |
| } |
| |
| void CmpInst::swapOperands() { |
| if (ICmpInst *IC = dyn_cast<ICmpInst>(this)) |
| IC->swapOperands(); |
| else |
| cast<FCmpInst>(this)->swapOperands(); |
| } |
| |
| bool CmpInst::isCommutative() { |
| if (ICmpInst *IC = dyn_cast<ICmpInst>(this)) |
| return IC->isCommutative(); |
| return cast<FCmpInst>(this)->isCommutative(); |
| } |
| |
| bool CmpInst::isEquality() { |
| if (ICmpInst *IC = dyn_cast<ICmpInst>(this)) |
| return IC->isEquality(); |
| return cast<FCmpInst>(this)->isEquality(); |
| } |
| |
| |
| ICmpInst::Predicate ICmpInst::getInversePredicate(Predicate pred) { |
| switch (pred) { |
| default: |
| assert(!"Unknown icmp predicate!"); |
| case ICMP_EQ: return ICMP_NE; |
| case ICMP_NE: return ICMP_EQ; |
| case ICMP_UGT: return ICMP_ULE; |
| case ICMP_ULT: return ICMP_UGE; |
| case ICMP_UGE: return ICMP_ULT; |
| case ICMP_ULE: return ICMP_UGT; |
| case ICMP_SGT: return ICMP_SLE; |
| case ICMP_SLT: return ICMP_SGE; |
| case ICMP_SGE: return ICMP_SLT; |
| case ICMP_SLE: return ICMP_SGT; |
| } |
| } |
| |
| ICmpInst::Predicate ICmpInst::getSwappedPredicate(Predicate pred) { |
| switch (pred) { |
| default: assert(! "Unknown icmp predicate!"); |
| case ICMP_EQ: case ICMP_NE: |
| return pred; |
| case ICMP_SGT: return ICMP_SLT; |
| case ICMP_SLT: return ICMP_SGT; |
| case ICMP_SGE: return ICMP_SLE; |
| case ICMP_SLE: return ICMP_SGE; |
| case ICMP_UGT: return ICMP_ULT; |
| case ICMP_ULT: return ICMP_UGT; |
| case ICMP_UGE: return ICMP_ULE; |
| case ICMP_ULE: return ICMP_UGE; |
| } |
| } |
| |
| ICmpInst::Predicate ICmpInst::getSignedPredicate(Predicate pred) { |
| switch (pred) { |
| default: assert(! "Unknown icmp predicate!"); |
| case ICMP_EQ: case ICMP_NE: |
| case ICMP_SGT: case ICMP_SLT: case ICMP_SGE: case ICMP_SLE: |
| return pred; |
| case ICMP_UGT: return ICMP_SGT; |
| case ICMP_ULT: return ICMP_SLT; |
| case ICMP_UGE: return ICMP_SGE; |
| case ICMP_ULE: return ICMP_SLE; |
| } |
| } |
| |
| 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!"); |
| case ICMP_SGT: case ICMP_SLT: case ICMP_SGE: case ICMP_SLE: |
| return true; |
| case ICMP_EQ: case ICMP_NE: case ICMP_UGT: case ICMP_ULT: |
| case ICMP_UGE: case ICMP_ULE: |
| return false; |
| } |
| } |
| |
| /// Initialize a set of values that all satisfy the condition with C. |
| /// |
| ConstantRange |
| ICmpInst::makeConstantRange(Predicate pred, const APInt &C) { |
| APInt Lower(C); |
| APInt Upper(C); |
| uint32_t BitWidth = C.getBitWidth(); |
| switch (pred) { |
| default: assert(0 && "Invalid ICmp opcode to ConstantRange ctor!"); |
| case ICmpInst::ICMP_EQ: Upper++; break; |
| case ICmpInst::ICMP_NE: Lower++; break; |
| case ICmpInst::ICMP_ULT: Lower = APInt::getMinValue(BitWidth); break; |
| case ICmpInst::ICMP_SLT: Lower = APInt::getSignedMinValue(BitWidth); break; |
| case ICmpInst::ICMP_UGT: |
| Lower++; Upper = APInt::getMinValue(BitWidth); // Min = Next(Max) |
| break; |
| case ICmpInst::ICMP_SGT: |
| Lower++; Upper = APInt::getSignedMinValue(BitWidth); // Min = Next(Max) |
| break; |
| case ICmpInst::ICMP_ULE: |
| Lower = APInt::getMinValue(BitWidth); Upper++; |
| break; |
| case ICmpInst::ICMP_SLE: |
| Lower = APInt::getSignedMinValue(BitWidth); Upper++; |
| break; |
| case ICmpInst::ICMP_UGE: |
| Upper = APInt::getMinValue(BitWidth); // Min = Next(Max) |
| break; |
| case ICmpInst::ICMP_SGE: |
| Upper = APInt::getSignedMinValue(BitWidth); // Min = Next(Max) |
| break; |
| } |
| return ConstantRange(Lower, Upper); |
| } |
| |
| FCmpInst::Predicate FCmpInst::getInversePredicate(Predicate pred) { |
| switch (pred) { |
| default: |
| assert(!"Unknown icmp predicate!"); |
| case FCMP_OEQ: return FCMP_UNE; |
| case FCMP_ONE: return FCMP_UEQ; |
| case FCMP_OGT: return FCMP_ULE; |
| case FCMP_OLT: return FCMP_UGE; |
| case FCMP_OGE: return FCMP_ULT; |
| case FCMP_OLE: return FCMP_UGT; |
| case FCMP_UEQ: return FCMP_ONE; |
| case FCMP_UNE: return FCMP_OEQ; |
| case FCMP_UGT: return FCMP_OLE; |
| case FCMP_ULT: return FCMP_OGE; |
| case FCMP_UGE: return FCMP_OLT; |
| case FCMP_ULE: return FCMP_OGT; |
| case FCMP_ORD: return FCMP_UNO; |
| case FCMP_UNO: return FCMP_ORD; |
| case FCMP_TRUE: return FCMP_FALSE; |
| case FCMP_FALSE: return FCMP_TRUE; |
| } |
| } |
| |
| FCmpInst::Predicate FCmpInst::getSwappedPredicate(Predicate pred) { |
| switch (pred) { |
| default: assert(!"Unknown fcmp predicate!"); |
| case FCMP_FALSE: case FCMP_TRUE: |
| case FCMP_OEQ: case FCMP_ONE: |
| case FCMP_UEQ: case FCMP_UNE: |
| case FCMP_ORD: case FCMP_UNO: |
| return pred; |
| case FCMP_OGT: return FCMP_OLT; |
| case FCMP_OLT: return FCMP_OGT; |
| case FCMP_OGE: return FCMP_OLE; |
| case FCMP_OLE: return FCMP_OGE; |
| case FCMP_UGT: return FCMP_ULT; |
| case FCMP_ULT: return FCMP_UGT; |
| case FCMP_UGE: return FCMP_ULE; |
| case FCMP_ULE: return FCMP_UGE; |
| } |
| } |
| |
| bool CmpInst::isUnsigned(unsigned short predicate) { |
| switch (predicate) { |
| default: return false; |
| case ICmpInst::ICMP_ULT: case ICmpInst::ICMP_ULE: case ICmpInst::ICMP_UGT: |
| case ICmpInst::ICMP_UGE: return true; |
| } |
| } |
| |
| bool CmpInst::isSigned(unsigned short predicate){ |
| switch (predicate) { |
| default: return false; |
| case ICmpInst::ICMP_SLT: case ICmpInst::ICMP_SLE: case ICmpInst::ICMP_SGT: |
| case ICmpInst::ICMP_SGE: return true; |
| } |
| } |
| |
| bool CmpInst::isOrdered(unsigned short predicate) { |
| switch (predicate) { |
| default: return false; |
| case FCmpInst::FCMP_OEQ: case FCmpInst::FCMP_ONE: case FCmpInst::FCMP_OGT: |
| case FCmpInst::FCMP_OLT: case FCmpInst::FCMP_OGE: case FCmpInst::FCMP_OLE: |
| case FCmpInst::FCMP_ORD: return true; |
| } |
| } |
| |
| bool CmpInst::isUnordered(unsigned short predicate) { |
| switch (predicate) { |
| default: return false; |
| case FCmpInst::FCMP_UEQ: case FCmpInst::FCMP_UNE: case FCmpInst::FCMP_UGT: |
| case FCmpInst::FCMP_ULT: case FCmpInst::FCMP_UGE: case FCmpInst::FCMP_ULE: |
| case FCmpInst::FCMP_UNO: return true; |
| } |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // SwitchInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void SwitchInst::init(Value *Value, BasicBlock *Default, unsigned NumCases) { |
| assert(Value && Default); |
| ReservedSpace = 2+NumCases*2; |
| NumOperands = 2; |
| OperandList = new Use[ReservedSpace]; |
| |
| OperandList[0].init(Value, this); |
| OperandList[1].init(Default, this); |
| } |
| |
| /// SwitchInst ctor - Create a new switch instruction, specifying a value to |
| /// switch on and a default destination. The number of additional cases can |
| /// be specified here to make memory allocation more efficient. This |
| /// constructor can also autoinsert before another instruction. |
| SwitchInst::SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases, |
| Instruction *InsertBefore) |
| : TerminatorInst(Type::VoidTy, Instruction::Switch, 0, 0, InsertBefore) { |
| init(Value, Default, NumCases); |
| } |
| |
| /// SwitchInst ctor - Create a new switch instruction, specifying a value to |
| /// switch on and a default destination. The number of additional cases can |
| /// be specified here to make memory allocation more efficient. This |
| /// constructor also autoinserts at the end of the specified BasicBlock. |
| SwitchInst::SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases, |
| BasicBlock *InsertAtEnd) |
| : TerminatorInst(Type::VoidTy, Instruction::Switch, 0, 0, InsertAtEnd) { |
| init(Value, Default, NumCases); |
| } |
| |
| SwitchInst::SwitchInst(const SwitchInst &SI) |
| : TerminatorInst(Type::VoidTy, Instruction::Switch, |
| new Use[SI.getNumOperands()], SI.getNumOperands()) { |
| Use *OL = OperandList, *InOL = SI.OperandList; |
| for (unsigned i = 0, E = SI.getNumOperands(); i != E; i+=2) { |
| OL[i].init(InOL[i], this); |
| OL[i+1].init(InOL[i+1], this); |
| } |
| } |
| |
| SwitchInst::~SwitchInst() { |
| delete [] OperandList; |
| } |
| |
| |
| /// addCase - Add an entry to the switch instruction... |
| /// |
| void SwitchInst::addCase(ConstantInt *OnVal, BasicBlock *Dest) { |
| unsigned OpNo = NumOperands; |
| if (OpNo+2 > ReservedSpace) |
| resizeOperands(0); // Get more space! |
| // Initialize some new operands. |
| assert(OpNo+1 < ReservedSpace && "Growing didn't work!"); |
| NumOperands = OpNo+2; |
| OperandList[OpNo].init(OnVal, this); |
| OperandList[OpNo+1].init(Dest, this); |
| } |
| |
| /// removeCase - This method removes the specified successor from the switch |
| /// instruction. Note that this cannot be used to remove the default |
| /// destination (successor #0). |
| /// |
| void SwitchInst::removeCase(unsigned idx) { |
| assert(idx != 0 && "Cannot remove the default case!"); |
| assert(idx*2 < getNumOperands() && "Successor index out of range!!!"); |
| |
| unsigned NumOps = getNumOperands(); |
| Use *OL = OperandList; |
| |
| // Move everything after this operand down. |
| // |
| // FIXME: we could just swap with the end of the list, then erase. However, |
| // client might not expect this to happen. The code as it is thrashes the |
| // use/def lists, which is kinda lame. |
| for (unsigned i = (idx+1)*2; i != NumOps; i += 2) { |
| OL[i-2] = OL[i]; |
| OL[i-2+1] = OL[i+1]; |
| } |
| |
| // Nuke the last value. |
| OL[NumOps-2].set(0); |
| OL[NumOps-2+1].set(0); |
| NumOperands = NumOps-2; |
| } |
| |
| /// resizeOperands - resize operands - This adjusts the length of the operands |
| /// list according to the following behavior: |
| /// 1. If NumOps == 0, grow the operand list in response to a push_back style |
| /// of operation. This grows the number of ops by 1.5 times. |
| /// 2. If NumOps > NumOperands, reserve space for NumOps operands. |
| /// 3. If NumOps == NumOperands, trim the reserved space. |
| /// |
| void SwitchInst::resizeOperands(unsigned NumOps) { |
| if (NumOps == 0) { |
| NumOps = getNumOperands()/2*6; |
| } else if (NumOps*2 > NumOperands) { |
| // No resize needed. |
| if (ReservedSpace >= NumOps) return; |
| } else if (NumOps == NumOperands) { |
| if (ReservedSpace == NumOps) return; |
| } else { |
| return; |
| } |
| |
| ReservedSpace = NumOps; |
| Use *NewOps = new Use[NumOps]; |
| Use *OldOps = OperandList; |
| for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { |
| NewOps[i].init(OldOps[i], this); |
| OldOps[i].set(0); |
| } |
| delete [] OldOps; |
| OperandList = NewOps; |
| } |
| |
| |
| BasicBlock *SwitchInst::getSuccessorV(unsigned idx) const { |
| return getSuccessor(idx); |
| } |
| unsigned SwitchInst::getNumSuccessorsV() const { |
| return getNumSuccessors(); |
| } |
| 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<StructType>(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<StructType>(Aggregate->getType())) { |
| unsigned NumElements = STy->getNumElements(); |
| if (Index >= NumElements || NumElements == 0) |
| 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. |
| |
| GetElementPtrInst *GetElementPtrInst::clone() const { |
| return new(getNumOperands()) GetElementPtrInst(*this); |
| } |
| |
| BinaryOperator *BinaryOperator::clone() const { |
| return create(getOpcode(), Ops[0], Ops[1]); |
| } |
| |
| FCmpInst* FCmpInst::clone() const { |
| return new FCmpInst(getPredicate(), Ops[0], Ops[1]); |
| } |
| ICmpInst* ICmpInst::clone() const { |
| return new ICmpInst(getPredicate(), Ops[0], Ops[1]); |
| } |
| |
| MallocInst *MallocInst::clone() const { return new MallocInst(*this); } |
| AllocaInst *AllocaInst::clone() const { return new AllocaInst(*this); } |
| FreeInst *FreeInst::clone() const { return new FreeInst(getOperand(0)); } |
| LoadInst *LoadInst::clone() const { return new LoadInst(*this); } |
| StoreInst *StoreInst::clone() const { return new StoreInst(*this); } |
| CastInst *TruncInst::clone() const { return new TruncInst(*this); } |
| CastInst *ZExtInst::clone() const { return new ZExtInst(*this); } |
| CastInst *SExtInst::clone() const { return new SExtInst(*this); } |
| CastInst *FPTruncInst::clone() const { return new FPTruncInst(*this); } |
| CastInst *FPExtInst::clone() const { return new FPExtInst(*this); } |
| CastInst *UIToFPInst::clone() const { return new UIToFPInst(*this); } |
| CastInst *SIToFPInst::clone() const { return new SIToFPInst(*this); } |
| CastInst *FPToUIInst::clone() const { return new FPToUIInst(*this); } |
| CastInst *FPToSIInst::clone() const { return new FPToSIInst(*this); } |
| CastInst *PtrToIntInst::clone() const { return new PtrToIntInst(*this); } |
| CastInst *IntToPtrInst::clone() const { return new IntToPtrInst(*this); } |
| CastInst *BitCastInst::clone() const { return new BitCastInst(*this); } |
| CallInst *CallInst::clone() const { return new(getNumOperands()) CallInst(*this); } |
| SelectInst *SelectInst::clone() const { return new(getNumOperands()) SelectInst(*this); } |
| VAArgInst *VAArgInst::clone() const { return new VAArgInst(*this); } |
| |
| ExtractElementInst *ExtractElementInst::clone() const { |
| return new ExtractElementInst(*this); |
| } |
| InsertElementInst *InsertElementInst::clone() const { |
| return InsertElementInst::Create(*this); |
| } |
| ShuffleVectorInst *ShuffleVectorInst::clone() const { |
| return new ShuffleVectorInst(*this); |
| } |
| PHINode *PHINode::clone() const { return new PHINode(*this); } |
| ReturnInst *ReturnInst::clone() const { return new(getNumOperands()) ReturnInst(*this); } |
| BranchInst *BranchInst::clone() const { return new(getNumOperands()) BranchInst(*this); } |
| SwitchInst *SwitchInst::clone() const { return new(getNumOperands()) SwitchInst(*this); } |
| InvokeInst *InvokeInst::clone() const { return new(getNumOperands()) InvokeInst(*this); } |
| UnwindInst *UnwindInst::clone() const { return new UnwindInst(); } |
| UnreachableInst *UnreachableInst::clone() const { return new UnreachableInst();} |
| GetResultInst *GetResultInst::clone() const { return new GetResultInst(*this); } |