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//====-- llvm/Support/TargetFolder.h - Constant folding helper -*- C++ -*-====//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the TargetFolder class, a helper for IRBuilder.
// It provides IRBuilder with a set of methods for creating constants with
// target dependent folding, in addition to the same target-independent
// folding that the ConstantFolder class provides. For general constant
// creation and folding, use ConstantExpr and the routines in
// llvm/Analysis/ConstantFolding.h.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_TARGETFOLDER_H
#define LLVM_SUPPORT_TARGETFOLDER_H
#include "llvm/ADT/ArrayRef.h"
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/InstrTypes.h"
namespace llvm {
class DataLayout;
/// TargetFolder - Create constants with target dependent folding.
class TargetFolder {
const DataLayout *TD;
/// Fold - Fold the constant using target specific information.
Constant *Fold(Constant *C) const {
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C))
if (Constant *CF = ConstantFoldConstantExpression(CE, TD))
return CF;
return C;
}
public:
explicit TargetFolder(const DataLayout *TheTD) : TD(TheTD) {}
//===--------------------------------------------------------------------===//
// Binary Operators
//===--------------------------------------------------------------------===//
Constant *CreateAdd(Constant *LHS, Constant *RHS,
bool HasNUW = false, bool HasNSW = false) const {
return Fold(ConstantExpr::getAdd(LHS, RHS, HasNUW, HasNSW));
}
Constant *CreateFAdd(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getFAdd(LHS, RHS));
}
Constant *CreateSub(Constant *LHS, Constant *RHS,
bool HasNUW = false, bool HasNSW = false) const {
return Fold(ConstantExpr::getSub(LHS, RHS, HasNUW, HasNSW));
}
Constant *CreateFSub(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getFSub(LHS, RHS));
}
Constant *CreateMul(Constant *LHS, Constant *RHS,
bool HasNUW = false, bool HasNSW = false) const {
return Fold(ConstantExpr::getMul(LHS, RHS, HasNUW, HasNSW));
}
Constant *CreateFMul(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getFMul(LHS, RHS));
}
Constant *CreateUDiv(Constant *LHS, Constant *RHS, bool isExact = false)const{
return Fold(ConstantExpr::getUDiv(LHS, RHS, isExact));
}
Constant *CreateSDiv(Constant *LHS, Constant *RHS, bool isExact = false)const{
return Fold(ConstantExpr::getSDiv(LHS, RHS, isExact));
}
Constant *CreateFDiv(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getFDiv(LHS, RHS));
}
Constant *CreateURem(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getURem(LHS, RHS));
}
Constant *CreateSRem(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getSRem(LHS, RHS));
}
Constant *CreateFRem(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getFRem(LHS, RHS));
}
Constant *CreateShl(Constant *LHS, Constant *RHS,
bool HasNUW = false, bool HasNSW = false) const {
return Fold(ConstantExpr::getShl(LHS, RHS, HasNUW, HasNSW));
}
Constant *CreateLShr(Constant *LHS, Constant *RHS, bool isExact = false)const{
return Fold(ConstantExpr::getLShr(LHS, RHS, isExact));
}
Constant *CreateAShr(Constant *LHS, Constant *RHS, bool isExact = false)const{
return Fold(ConstantExpr::getAShr(LHS, RHS, isExact));
}
Constant *CreateAnd(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getAnd(LHS, RHS));
}
Constant *CreateOr(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getOr(LHS, RHS));
}
Constant *CreateXor(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getXor(LHS, RHS));
}
Constant *CreateBinOp(Instruction::BinaryOps Opc,
Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::get(Opc, LHS, RHS));
}
//===--------------------------------------------------------------------===//
// Unary Operators
//===--------------------------------------------------------------------===//
Constant *CreateNeg(Constant *C,
bool HasNUW = false, bool HasNSW = false) const {
return Fold(ConstantExpr::getNeg(C, HasNUW, HasNSW));
}
Constant *CreateFNeg(Constant *C) const {
return Fold(ConstantExpr::getFNeg(C));
}
Constant *CreateNot(Constant *C) const {
return Fold(ConstantExpr::getNot(C));
}
//===--------------------------------------------------------------------===//
// Memory Instructions
//===--------------------------------------------------------------------===//
Constant *CreateGetElementPtr(Constant *C,
ArrayRef<Constant *> IdxList) const {
return Fold(ConstantExpr::getGetElementPtr(C, IdxList));
}
Constant *CreateGetElementPtr(Constant *C, Constant *Idx) const {
// This form of the function only exists to avoid ambiguous overload
// warnings about whether to convert Idx to ArrayRef<Constant *> or
// ArrayRef<Value *>.
return Fold(ConstantExpr::getGetElementPtr(C, Idx));
}
Constant *CreateGetElementPtr(Constant *C,
ArrayRef<Value *> IdxList) const {
return Fold(ConstantExpr::getGetElementPtr(C, IdxList));
}
Constant *CreateInBoundsGetElementPtr(Constant *C,
ArrayRef<Constant *> IdxList) const {
return Fold(ConstantExpr::getInBoundsGetElementPtr(C, IdxList));
}
Constant *CreateInBoundsGetElementPtr(Constant *C, Constant *Idx) const {
// This form of the function only exists to avoid ambiguous overload
// warnings about whether to convert Idx to ArrayRef<Constant *> or
// ArrayRef<Value *>.
return Fold(ConstantExpr::getInBoundsGetElementPtr(C, Idx));
}
Constant *CreateInBoundsGetElementPtr(Constant *C,
ArrayRef<Value *> IdxList) const {
return Fold(ConstantExpr::getInBoundsGetElementPtr(C, IdxList));
}
//===--------------------------------------------------------------------===//
// Cast/Conversion Operators
//===--------------------------------------------------------------------===//
Constant *CreateCast(Instruction::CastOps Op, Constant *C,
Type *DestTy) const {
if (C->getType() == DestTy)
return C; // avoid calling Fold
return Fold(ConstantExpr::getCast(Op, C, DestTy));
}
Constant *CreateIntCast(Constant *C, Type *DestTy,
bool isSigned) const {
if (C->getType() == DestTy)
return C; // avoid calling Fold
return Fold(ConstantExpr::getIntegerCast(C, DestTy, isSigned));
}
Constant *CreatePointerCast(Constant *C, Type *DestTy) const {
if (C->getType() == DestTy)
return C; // avoid calling Fold
return Fold(ConstantExpr::getPointerCast(C, DestTy));
}
Constant *CreateFPCast(Constant *C, Type *DestTy) const {
if (C->getType() == DestTy)
return C; // avoid calling Fold
return Fold(ConstantExpr::getFPCast(C, DestTy));
}
Constant *CreateBitCast(Constant *C, Type *DestTy) const {
return CreateCast(Instruction::BitCast, C, DestTy);
}
Constant *CreateIntToPtr(Constant *C, Type *DestTy) const {
return CreateCast(Instruction::IntToPtr, C, DestTy);
}
Constant *CreatePtrToInt(Constant *C, Type *DestTy) const {
return CreateCast(Instruction::PtrToInt, C, DestTy);
}
Constant *CreateZExtOrBitCast(Constant *C, Type *DestTy) const {
if (C->getType() == DestTy)
return C; // avoid calling Fold
return Fold(ConstantExpr::getZExtOrBitCast(C, DestTy));
}
Constant *CreateSExtOrBitCast(Constant *C, Type *DestTy) const {
if (C->getType() == DestTy)
return C; // avoid calling Fold
return Fold(ConstantExpr::getSExtOrBitCast(C, DestTy));
}
Constant *CreateTruncOrBitCast(Constant *C, Type *DestTy) const {
if (C->getType() == DestTy)
return C; // avoid calling Fold
return Fold(ConstantExpr::getTruncOrBitCast(C, DestTy));
}
//===--------------------------------------------------------------------===//
// Compare Instructions
//===--------------------------------------------------------------------===//
Constant *CreateICmp(CmpInst::Predicate P, Constant *LHS,
Constant *RHS) const {
return Fold(ConstantExpr::getCompare(P, LHS, RHS));
}
Constant *CreateFCmp(CmpInst::Predicate P, Constant *LHS,
Constant *RHS) const {
return Fold(ConstantExpr::getCompare(P, LHS, RHS));
}
//===--------------------------------------------------------------------===//
// Other Instructions
//===--------------------------------------------------------------------===//
Constant *CreateSelect(Constant *C, Constant *True, Constant *False) const {
return Fold(ConstantExpr::getSelect(C, True, False));
}
Constant *CreateExtractElement(Constant *Vec, Constant *Idx) const {
return Fold(ConstantExpr::getExtractElement(Vec, Idx));
}
Constant *CreateInsertElement(Constant *Vec, Constant *NewElt,
Constant *Idx) const {
return Fold(ConstantExpr::getInsertElement(Vec, NewElt, Idx));
}
Constant *CreateShuffleVector(Constant *V1, Constant *V2,
Constant *Mask) const {
return Fold(ConstantExpr::getShuffleVector(V1, V2, Mask));
}
Constant *CreateExtractValue(Constant *Agg,
ArrayRef<unsigned> IdxList) const {
return Fold(ConstantExpr::getExtractValue(Agg, IdxList));
}
Constant *CreateInsertValue(Constant *Agg, Constant *Val,
ArrayRef<unsigned> IdxList) const {
return Fold(ConstantExpr::getInsertValue(Agg, Val, IdxList));
}
};
}
#endif
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