| //===-- Instructions.cpp - Implement the LLVM instructions ----------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file was developed by the LLVM research group and is distributed under |
| // the University of Illinois Open Source License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the LLVM instructions... |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #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" |
| using namespace llvm; |
| |
| //===----------------------------------------------------------------------===// |
| // CallInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void CallInst::init(Value *Func, const std::vector<Value*> &Params) |
| { |
| Operands.reserve(1+Params.size()); |
| Operands.push_back(Use(Func, this)); |
| |
| const FunctionType *FTy = |
| cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType()); |
| |
| assert((Params.size() == FTy->getNumParams() || |
| (FTy->isVarArg() && Params.size() > FTy->getNumParams())) && |
| "Calling a function with bad signature"); |
| for (unsigned i = 0; i != Params.size(); i++) |
| Operands.push_back(Use(Params[i], this)); |
| } |
| |
| void CallInst::init(Value *Func, Value *Actual1, Value *Actual2) |
| { |
| Operands.reserve(3); |
| Operands.push_back(Use(Func, this)); |
| |
| const FunctionType *MTy = |
| cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType()); |
| |
| assert((MTy->getNumParams() == 2 || |
| (MTy->isVarArg() && MTy->getNumParams() == 0)) && |
| "Calling a function with bad signature"); |
| Operands.push_back(Use(Actual1, this)); |
| Operands.push_back(Use(Actual2, this)); |
| } |
| |
| void CallInst::init(Value *Func, Value *Actual) |
| { |
| Operands.reserve(2); |
| Operands.push_back(Use(Func, this)); |
| |
| const FunctionType *MTy = |
| cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType()); |
| |
| assert((MTy->getNumParams() == 1 || |
| (MTy->isVarArg() && MTy->getNumParams() == 0)) && |
| "Calling a function with bad signature"); |
| Operands.push_back(Use(Actual, this)); |
| } |
| |
| void CallInst::init(Value *Func) |
| { |
| Operands.reserve(1); |
| Operands.push_back(Use(Func, this)); |
| |
| const FunctionType *MTy = |
| cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType()); |
| |
| assert(MTy->getNumParams() == 0 && "Calling a function with bad signature"); |
| } |
| |
| CallInst::CallInst(Value *Func, const std::vector<Value*> &Params, |
| const std::string &Name, Instruction *InsertBefore) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, Name, InsertBefore) { |
| init(Func, Params); |
| } |
| |
| CallInst::CallInst(Value *Func, const std::vector<Value*> &Params, |
| const std::string &Name, BasicBlock *InsertAtEnd) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, Name, InsertAtEnd) { |
| init(Func, Params); |
| } |
| |
| CallInst::CallInst(Value *Func, Value *Actual1, Value *Actual2, |
| const std::string &Name, Instruction *InsertBefore) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, Name, InsertBefore) { |
| init(Func, Actual1, Actual2); |
| } |
| |
| CallInst::CallInst(Value *Func, Value *Actual1, Value *Actual2, |
| const std::string &Name, BasicBlock *InsertAtEnd) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, Name, InsertAtEnd) { |
| init(Func, Actual1, Actual2); |
| } |
| |
| CallInst::CallInst(Value *Func, Value* Actual, const std::string &Name, |
| Instruction *InsertBefore) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, Name, InsertBefore) { |
| init(Func, Actual); |
| } |
| |
| CallInst::CallInst(Value *Func, Value* Actual, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, Name, InsertAtEnd) { |
| init(Func, Actual); |
| } |
| |
| CallInst::CallInst(Value *Func, const std::string &Name, |
| Instruction *InsertBefore) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, Name, InsertBefore) { |
| init(Func); |
| } |
| |
| CallInst::CallInst(Value *Func, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Call, Name, InsertAtEnd) { |
| init(Func); |
| } |
| |
| CallInst::CallInst(const CallInst &CI) |
| : Instruction(CI.getType(), Instruction::Call) { |
| Operands.reserve(CI.Operands.size()); |
| for (unsigned i = 0; i < CI.Operands.size(); ++i) |
| Operands.push_back(Use(CI.Operands[i], this)); |
| } |
| |
| const Function *CallInst::getCalledFunction() const { |
| if (const Function *F = dyn_cast<Function>(Operands[0])) |
| return F; |
| return 0; |
| } |
| Function *CallInst::getCalledFunction() { |
| if (Function *F = dyn_cast<Function>(Operands[0])) |
| return F; |
| return 0; |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // InvokeInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void InvokeInst::init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException, |
| const std::vector<Value*> &Params) |
| { |
| Operands.reserve(3+Params.size()); |
| Operands.push_back(Use(Fn, this)); |
| Operands.push_back(Use((Value*)IfNormal, this)); |
| Operands.push_back(Use((Value*)IfException, this)); |
| const FunctionType *MTy = |
| cast<FunctionType>(cast<PointerType>(Fn->getType())->getElementType()); |
| |
| assert((Params.size() == MTy->getNumParams()) || |
| (MTy->isVarArg() && Params.size() > MTy->getNumParams()) && |
| "Calling a function with bad signature"); |
| |
| for (unsigned i = 0; i < Params.size(); i++) |
| Operands.push_back(Use(Params[i], this)); |
| } |
| |
| InvokeInst::InvokeInst(Value *Fn, BasicBlock *IfNormal, |
| BasicBlock *IfException, |
| const std::vector<Value*> &Params, |
| const std::string &Name, Instruction *InsertBefore) |
| : TerminatorInst(cast<FunctionType>(cast<PointerType>(Fn->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Invoke, Name, InsertBefore) { |
| init(Fn, IfNormal, IfException, Params); |
| } |
| |
| InvokeInst::InvokeInst(Value *Fn, BasicBlock *IfNormal, |
| BasicBlock *IfException, |
| const std::vector<Value*> &Params, |
| const std::string &Name, BasicBlock *InsertAtEnd) |
| : TerminatorInst(cast<FunctionType>(cast<PointerType>(Fn->getType()) |
| ->getElementType())->getReturnType(), |
| Instruction::Invoke, Name, InsertAtEnd) { |
| init(Fn, IfNormal, IfException, Params); |
| } |
| |
| InvokeInst::InvokeInst(const InvokeInst &CI) |
| : TerminatorInst(CI.getType(), Instruction::Invoke) { |
| Operands.reserve(CI.Operands.size()); |
| for (unsigned i = 0; i < CI.Operands.size(); ++i) |
| Operands.push_back(Use(CI.Operands[i], this)); |
| } |
| |
| const Function *InvokeInst::getCalledFunction() const { |
| if (const Function *F = dyn_cast<Function>(Operands[0])) |
| return F; |
| return 0; |
| } |
| Function *InvokeInst::getCalledFunction() { |
| if (Function *F = dyn_cast<Function>(Operands[0])) |
| return F; |
| return 0; |
| } |
| |
| // FIXME: Is this supposed to be here? |
| Function *CallSite::getCalledFunction() const { |
| Value *Callee = getCalledValue(); |
| if (Function *F = dyn_cast<Function>(Callee)) |
| return F; |
| return 0; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // ReturnInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| // 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::setSuccessor(unsigned idx, BasicBlock *NewSucc) { |
| assert(0 && "ReturnInst has no successors!"); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // UnwindInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| // Likewise for UnwindInst |
| void UnwindInst::setSuccessor(unsigned idx, BasicBlock *NewSucc) { |
| assert(0 && "UnwindInst has no successors!"); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // BranchInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void BranchInst::init(BasicBlock *IfTrue) |
| { |
| assert(IfTrue != 0 && "Branch destination may not be null!"); |
| Operands.reserve(1); |
| Operands.push_back(Use(IfTrue, this)); |
| } |
| |
| void BranchInst::init(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond) |
| { |
| assert(IfTrue && IfFalse && Cond && |
| "Branch destinations and condition may not be null!"); |
| assert(Cond && Cond->getType() == Type::BoolTy && |
| "May only branch on boolean predicates!"); |
| Operands.reserve(3); |
| Operands.push_back(Use(IfTrue, this)); |
| Operands.push_back(Use(IfFalse, this)); |
| Operands.push_back(Use(Cond, this)); |
| } |
| |
| BranchInst::BranchInst(const BranchInst &BI) : TerminatorInst(Instruction::Br) { |
| Operands.reserve(BI.Operands.size()); |
| Operands.push_back(Use(BI.Operands[0], this)); |
| if (BI.Operands.size() != 1) { |
| assert(BI.Operands.size() == 3 && "BR can have 1 or 3 operands!"); |
| Operands.push_back(Use(BI.Operands[1], this)); |
| Operands.push_back(Use(BI.Operands[2], this)); |
| } |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // AllocationInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void AllocationInst::init(const Type *Ty, Value *ArraySize, unsigned iTy) { |
| assert(Ty != Type::VoidTy && "Cannot allocate void elements!"); |
| // ArraySize defaults to 1. |
| if (!ArraySize) ArraySize = ConstantUInt::get(Type::UIntTy, 1); |
| |
| Operands.reserve(1); |
| assert(ArraySize->getType() == Type::UIntTy && |
| "Malloc/Allocation array size != UIntTy!"); |
| |
| Operands.push_back(Use(ArraySize, this)); |
| } |
| |
| AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, |
| const std::string &Name, |
| Instruction *InsertBefore) |
| : Instruction(PointerType::get(Ty), iTy, Name, InsertBefore) { |
| init(Ty, ArraySize, iTy); |
| } |
| |
| AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, |
| const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : Instruction(PointerType::get(Ty), iTy, Name, InsertAtEnd) { |
| init(Ty, ArraySize, iTy); |
| } |
| |
| bool AllocationInst::isArrayAllocation() const { |
| return getOperand(0) != ConstantUInt::get(Type::UIntTy, 1); |
| } |
| |
| const Type *AllocationInst::getAllocatedType() const { |
| return getType()->getElementType(); |
| } |
| |
| AllocaInst::AllocaInst(const AllocaInst &AI) |
| : AllocationInst(AI.getType()->getElementType(), (Value*)AI.getOperand(0), |
| Instruction::Alloca) { |
| } |
| |
| MallocInst::MallocInst(const MallocInst &MI) |
| : AllocationInst(MI.getType()->getElementType(), (Value*)MI.getOperand(0), |
| Instruction::Malloc) { |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // FreeInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void FreeInst::init(Value *Ptr) |
| { |
| assert(Ptr && isa<PointerType>(Ptr->getType()) && "Can't free nonpointer!"); |
| Operands.reserve(1); |
| Operands.push_back(Use(Ptr, this)); |
| } |
| |
| FreeInst::FreeInst(Value *Ptr, Instruction *InsertBefore) |
| : Instruction(Type::VoidTy, Free, "", InsertBefore) { |
| init(Ptr); |
| } |
| |
| FreeInst::FreeInst(Value *Ptr, BasicBlock *InsertAtEnd) |
| : Instruction(Type::VoidTy, Free, "", InsertAtEnd) { |
| init(Ptr); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // LoadInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void LoadInst::init(Value *Ptr) { |
| assert(Ptr && isa<PointerType>(Ptr->getType()) && |
| "Ptr must have pointer type."); |
| Operands.reserve(1); |
| Operands.push_back(Use(Ptr, this)); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBef) |
| : Instruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Name, InsertBef), Volatile(false) { |
| init(Ptr); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAE) |
| : Instruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Name, InsertAE), Volatile(false) { |
| init(Ptr); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, |
| Instruction *InsertBef) |
| : Instruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Name, InsertBef), Volatile(isVolatile) { |
| init(Ptr); |
| } |
| |
| LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, |
| BasicBlock *InsertAE) |
| : Instruction(cast<PointerType>(Ptr->getType())->getElementType(), |
| Load, Name, InsertAE), Volatile(isVolatile) { |
| init(Ptr); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // StoreInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| StoreInst::StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore) |
| : Instruction(Type::VoidTy, Store, "", InsertBefore), Volatile(false) { |
| init(Val, Ptr); |
| } |
| |
| StoreInst::StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd) |
| : Instruction(Type::VoidTy, Store, "", InsertAtEnd), Volatile(false) { |
| init(Val, Ptr); |
| } |
| |
| StoreInst::StoreInst(Value *Val, Value *Ptr, bool isVolatile, |
| Instruction *InsertBefore) |
| : Instruction(Type::VoidTy, Store, "", InsertBefore), Volatile(isVolatile) { |
| init(Val, Ptr); |
| } |
| |
| StoreInst::StoreInst(Value *Val, Value *Ptr, bool isVolatile, |
| BasicBlock *InsertAtEnd) |
| : Instruction(Type::VoidTy, Store, "", InsertAtEnd), Volatile(isVolatile) { |
| init(Val, Ptr); |
| } |
| |
| void StoreInst::init(Value *Val, Value *Ptr) { |
| assert(isa<PointerType>(Ptr->getType()) && |
| Val->getType() == cast<PointerType>(Ptr->getType())->getElementType() |
| && "Ptr must have pointer type."); |
| |
| Operands.reserve(2); |
| Operands.push_back(Use(Val, this)); |
| Operands.push_back(Use(Ptr, this)); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // GetElementPtrInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| // checkType - Simple wrapper function to give a better assertion failure |
| // message on bad indexes for a gep instruction. |
| // |
| static inline const Type *checkType(const Type *Ty) { |
| assert(Ty && "Invalid indices for type!"); |
| return Ty; |
| } |
| |
| void GetElementPtrInst::init(Value *Ptr, const std::vector<Value*> &Idx) |
| { |
| Operands.reserve(1+Idx.size()); |
| Operands.push_back(Use(Ptr, this)); |
| |
| for (unsigned i = 0, E = Idx.size(); i != E; ++i) |
| Operands.push_back(Use(Idx[i], this)); |
| } |
| |
| void GetElementPtrInst::init(Value *Ptr, Value *Idx0, Value *Idx1) { |
| Operands.reserve(3); |
| Operands.push_back(Use(Ptr, this)); |
| Operands.push_back(Use(Idx0, this)); |
| Operands.push_back(Use(Idx1, this)); |
| } |
| |
| GetElementPtrInst::GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx, |
| const std::string &Name, Instruction *InBe) |
| : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(), |
| Idx, true))), |
| GetElementPtr, Name, InBe) { |
| init(Ptr, Idx); |
| } |
| |
| GetElementPtrInst::GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx, |
| const std::string &Name, BasicBlock *IAE) |
| : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(), |
| Idx, true))), |
| GetElementPtr, Name, IAE) { |
| init(Ptr, Idx); |
| } |
| |
| GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1, |
| const std::string &Name, Instruction *InBe) |
| : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(), |
| Idx0, Idx1, true))), |
| GetElementPtr, Name, InBe) { |
| init(Ptr, Idx0, Idx1); |
| } |
| |
| GetElementPtrInst::GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1, |
| const std::string &Name, BasicBlock *IAE) |
| : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(), |
| Idx0, Idx1, true))), |
| GetElementPtr, Name, IAE) { |
| init(Ptr, Idx0, Idx1); |
| } |
| |
| // 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, |
| const std::vector<Value*> &Idx, |
| 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 (Idx.empty()) |
| 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 (Idx.size() == CurIdx) { |
| if (AllowCompositeLeaf || CT->isFirstClassType()) return Ptr; |
| return 0; // Can't load a whole structure or array!?!? |
| } |
| |
| Value *Index = Idx[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 == Idx.size() ? Ptr : 0; |
| } |
| |
| const Type* GetElementPtrInst::getIndexedType(const Type *Ptr, |
| Value *Idx0, Value *Idx1, |
| bool AllowCompositeLeaf) { |
| const PointerType *PTy = dyn_cast<PointerType>(Ptr); |
| if (!PTy) return 0; // Type isn't a pointer type! |
| |
| // Check the pointer index. |
| if (!PTy->indexValid(Idx0)) return 0; |
| |
| const CompositeType *CT = dyn_cast<CompositeType>(PTy->getElementType()); |
| if (!CT || !CT->indexValid(Idx1)) return 0; |
| |
| const Type *ElTy = CT->getTypeAtIndex(Idx1); |
| if (AllowCompositeLeaf || ElTy->isFirstClassType()) |
| return ElTy; |
| return 0; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // BinaryOperator Class |
| //===----------------------------------------------------------------------===// |
| |
| void BinaryOperator::init(BinaryOps iType, Value *S1, Value *S2) |
| { |
| Operands.reserve(2); |
| Operands.push_back(Use(S1, this)); |
| Operands.push_back(Use(S2, this)); |
| assert(S1 && S2 && S1->getType() == S2->getType()); |
| |
| #ifndef NDEBUG |
| switch (iType) { |
| case Add: case Sub: |
| case Mul: case Div: |
| case Rem: |
| assert(getType() == S1->getType() && |
| "Arithmetic operation should return same type as operands!"); |
| assert((getType()->isInteger() || getType()->isFloatingPoint()) && |
| "Tried to create an arithmetic operation on a non-arithmetic type!"); |
| break; |
| case And: case Or: |
| case Xor: |
| assert(getType() == S1->getType() && |
| "Logical operation should return same type as operands!"); |
| assert(getType()->isIntegral() && |
| "Tried to create an logical operation on a non-integral type!"); |
| break; |
| case SetLT: case SetGT: case SetLE: |
| case SetGE: case SetEQ: case SetNE: |
| assert(getType() == Type::BoolTy && "Setcc must return bool!"); |
| 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!"); |
| switch (Op) { |
| // Binary comparison operators... |
| case SetLT: case SetGT: case SetLE: |
| case SetGE: case SetEQ: case SetNE: |
| return new SetCondInst(Op, S1, S2, Name, InsertBefore); |
| |
| default: |
| 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) { |
| if (!Op->getType()->isFloatingPoint()) |
| return new BinaryOperator(Instruction::Sub, |
| Constant::getNullValue(Op->getType()), Op, |
| Op->getType(), Name, InsertBefore); |
| else |
| return new BinaryOperator(Instruction::Sub, |
| ConstantFP::get(Op->getType(), -0.0), Op, |
| Op->getType(), Name, InsertBefore); |
| } |
| |
| BinaryOperator *BinaryOperator::createNeg(Value *Op, const std::string &Name, |
| BasicBlock *InsertAtEnd) { |
| if (!Op->getType()->isFloatingPoint()) |
| return new BinaryOperator(Instruction::Sub, |
| Constant::getNullValue(Op->getType()), Op, |
| Op->getType(), Name, InsertAtEnd); |
| else |
| return new BinaryOperator(Instruction::Sub, |
| ConstantFP::get(Op->getType(), -0.0), Op, |
| Op->getType(), Name, InsertAtEnd); |
| } |
| |
| BinaryOperator *BinaryOperator::createNot(Value *Op, const std::string &Name, |
| Instruction *InsertBefore) { |
| return new BinaryOperator(Instruction::Xor, Op, |
| ConstantIntegral::getAllOnesValue(Op->getType()), |
| Op->getType(), Name, InsertBefore); |
| } |
| |
| BinaryOperator *BinaryOperator::createNot(Value *Op, const std::string &Name, |
| BasicBlock *InsertAtEnd) { |
| return new BinaryOperator(Instruction::Xor, Op, |
| ConstantIntegral::getAllOnesValue(Op->getType()), |
| Op->getType(), Name, InsertAtEnd); |
| } |
| |
| |
| // isConstantAllOnes - Helper function for several functions below |
| static inline bool isConstantAllOnes(const Value *V) { |
| return isa<ConstantIntegral>(V) &&cast<ConstantIntegral>(V)->isAllOnesValue(); |
| } |
| |
| bool BinaryOperator::isNeg(const Value *V) { |
| if (const BinaryOperator *Bop = dyn_cast<BinaryOperator>(V)) |
| if (Bop->getOpcode() == Instruction::Sub) |
| if (!V->getType()->isFloatingPoint()) |
| return Bop->getOperand(0) == Constant::getNullValue(Bop->getType()); |
| else |
| return Bop->getOperand(0) == ConstantFP::get(Bop->getType(), -0.0); |
| 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(BinaryOperator *Bop) { |
| assert(isNeg(Bop) && "getNegArgument from non-'neg' instruction!"); |
| return Bop->getOperand(1); |
| } |
| |
| const Value *BinaryOperator::getNegArgument(const BinaryOperator *Bop) { |
| return getNegArgument((BinaryOperator*)Bop); |
| } |
| |
| Value *BinaryOperator::getNotArgument(BinaryOperator *Bop) { |
| assert(isNot(Bop) && "getNotArgument on non-'not' instruction!"); |
| Value *Op0 = Bop->getOperand(0); |
| Value *Op1 = Bop->getOperand(1); |
| if (isConstantAllOnes(Op0)) return Op1; |
| |
| assert(isConstantAllOnes(Op1)); |
| return Op0; |
| } |
| |
| const Value *BinaryOperator::getNotArgument(const BinaryOperator *Bop) { |
| return getNotArgument((BinaryOperator*)Bop); |
| } |
| |
| |
| // 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()) |
| ; // If the instruction is commutative, it is safe to swap the operands |
| else if (SetCondInst *SCI = dyn_cast<SetCondInst>(this)) |
| /// FIXME: SetCC instructions shouldn't all have different opcodes. |
| setOpcode(SCI->getSwappedCondition()); |
| else |
| return true; // Can't commute operands |
| |
| std::swap(Operands[0], Operands[1]); |
| return false; |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // SetCondInst Class |
| //===----------------------------------------------------------------------===// |
| |
| SetCondInst::SetCondInst(BinaryOps Opcode, Value *S1, Value *S2, |
| const std::string &Name, Instruction *InsertBefore) |
| : BinaryOperator(Opcode, S1, S2, Type::BoolTy, Name, InsertBefore) { |
| |
| // Make sure it's a valid type... getInverseCondition will assert out if not. |
| assert(getInverseCondition(Opcode)); |
| } |
| |
| SetCondInst::SetCondInst(BinaryOps Opcode, Value *S1, Value *S2, |
| const std::string &Name, BasicBlock *InsertAtEnd) |
| : BinaryOperator(Opcode, S1, S2, Type::BoolTy, Name, InsertAtEnd) { |
| |
| // Make sure it's a valid type... getInverseCondition will assert out if not. |
| assert(getInverseCondition(Opcode)); |
| } |
| |
| // getInverseCondition - Return the inverse of the current condition opcode. |
| // For example seteq -> setne, setgt -> setle, setlt -> setge, etc... |
| // |
| Instruction::BinaryOps SetCondInst::getInverseCondition(BinaryOps Opcode) { |
| switch (Opcode) { |
| default: |
| assert(0 && "Unknown setcc opcode!"); |
| case SetEQ: return SetNE; |
| case SetNE: return SetEQ; |
| case SetGT: return SetLE; |
| case SetLT: return SetGE; |
| case SetGE: return SetLT; |
| case SetLE: return SetGT; |
| } |
| } |
| |
| // getSwappedCondition - Return the condition opcode that would be the result |
| // of exchanging the two operands of the setcc instruction without changing |
| // the result produced. Thus, seteq->seteq, setle->setge, setlt->setgt, etc. |
| // |
| Instruction::BinaryOps SetCondInst::getSwappedCondition(BinaryOps Opcode) { |
| switch (Opcode) { |
| default: assert(0 && "Unknown setcc instruction!"); |
| case SetEQ: case SetNE: return Opcode; |
| case SetGT: return SetLT; |
| case SetLT: return SetGT; |
| case SetGE: return SetLE; |
| case SetLE: return SetGE; |
| } |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // SwitchInst Implementation |
| //===----------------------------------------------------------------------===// |
| |
| void SwitchInst::init(Value *Value, BasicBlock *Default) |
| { |
| assert(Value && Default); |
| Operands.push_back(Use(Value, this)); |
| Operands.push_back(Use(Default, this)); |
| } |
| |
| SwitchInst::SwitchInst(const SwitchInst &SI) |
| : TerminatorInst(Instruction::Switch) { |
| Operands.reserve(SI.Operands.size()); |
| |
| for (unsigned i = 0, E = SI.Operands.size(); i != E; i+=2) { |
| Operands.push_back(Use(SI.Operands[i], this)); |
| Operands.push_back(Use(SI.Operands[i+1], this)); |
| } |
| } |
| |
| /// addCase - Add an entry to the switch instruction... |
| /// |
| void SwitchInst::addCase(Constant *OnVal, BasicBlock *Dest) { |
| Operands.push_back(Use((Value*)OnVal, this)); |
| Operands.push_back(Use((Value*)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 < Operands.size() && "Successor index out of range!!!"); |
| Operands.erase(Operands.begin()+idx*2, Operands.begin()+(idx+1)*2); |
| } |