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integer and floating-point opcodes, introducing FAdd, FSub, and FMul. For now, the AsmParser, BitcodeReader, and IRBuilder all preserve backwards compatability, and the Core LLVM APIs preserve backwards compatibility for IR producers. Most front-ends won't need to change immediately. This implements the first step of the plan outlined here: http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72897 91177308-0d34-0410-b5e6-96231b3b80d8
224 lines
8.1 KiB
C++
224 lines
8.1 KiB
C++
//====-- llvm/Support/TargetFolder.h - Constant folding helper -*- C++ -*-====//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the TargetFolder class, a helper for IRBuilder.
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// It provides IRBuilder with a set of methods for creating constants with
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// target dependent folding, in addition to the same target-independent
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// folding that the ConstantFolder class provides. For general constant
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// creation and folding, use ConstantExpr and the routines in
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// llvm/Analysis/ConstantFolding.h.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_TARGETFOLDER_H
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#define LLVM_SUPPORT_TARGETFOLDER_H
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#include "llvm/Constants.h"
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#include "llvm/Analysis/ConstantFolding.h"
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namespace llvm {
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class TargetData;
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/// TargetFolder - Create constants with target dependent folding.
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class TargetFolder {
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const TargetData *TD;
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/// Fold - Fold the constant using target specific information.
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Constant *Fold(Constant *C) const {
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if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C))
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if (Constant *CF = ConstantFoldConstantExpression(CE, TD))
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return CF;
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return C;
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}
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public:
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explicit TargetFolder(const TargetData *TheTD) : TD(TheTD) {}
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//===--------------------------------------------------------------------===//
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// Binary Operators
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//===--------------------------------------------------------------------===//
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Constant *CreateAdd(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getAdd(LHS, RHS));
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}
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Constant *CreateFAdd(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getFAdd(LHS, RHS));
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}
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Constant *CreateSub(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getSub(LHS, RHS));
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}
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Constant *CreateFSub(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getFSub(LHS, RHS));
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}
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Constant *CreateMul(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getMul(LHS, RHS));
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}
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Constant *CreateFMul(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getFMul(LHS, RHS));
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}
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Constant *CreateUDiv(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getUDiv(LHS, RHS));
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}
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Constant *CreateSDiv(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getSDiv(LHS, RHS));
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}
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Constant *CreateFDiv(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getFDiv(LHS, RHS));
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}
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Constant *CreateURem(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getURem(LHS, RHS));
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}
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Constant *CreateSRem(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getSRem(LHS, RHS));
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}
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Constant *CreateFRem(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getFRem(LHS, RHS));
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}
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Constant *CreateShl(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getShl(LHS, RHS));
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}
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Constant *CreateLShr(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getLShr(LHS, RHS));
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}
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Constant *CreateAShr(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getAShr(LHS, RHS));
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}
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Constant *CreateAnd(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getAnd(LHS, RHS));
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}
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Constant *CreateOr(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getOr(LHS, RHS));
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}
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Constant *CreateXor(Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::getXor(LHS, RHS));
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}
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Constant *CreateBinOp(Instruction::BinaryOps Opc,
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Constant *LHS, Constant *RHS) const {
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return Fold(ConstantExpr::get(Opc, LHS, RHS));
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}
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//===--------------------------------------------------------------------===//
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// Unary Operators
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//===--------------------------------------------------------------------===//
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Constant *CreateNeg(Constant *C) const {
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return Fold(ConstantExpr::getNeg(C));
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}
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Constant *CreateFNeg(Constant *C) const {
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return Fold(ConstantExpr::getFNeg(C));
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}
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Constant *CreateNot(Constant *C) const {
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return Fold(ConstantExpr::getNot(C));
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}
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//===--------------------------------------------------------------------===//
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// Memory Instructions
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//===--------------------------------------------------------------------===//
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Constant *CreateGetElementPtr(Constant *C, Constant* const *IdxList,
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unsigned NumIdx) const {
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return Fold(ConstantExpr::getGetElementPtr(C, IdxList, NumIdx));
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}
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Constant *CreateGetElementPtr(Constant *C, Value* const *IdxList,
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unsigned NumIdx) const {
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return Fold(ConstantExpr::getGetElementPtr(C, IdxList, NumIdx));
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}
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//===--------------------------------------------------------------------===//
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// Cast/Conversion Operators
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//===--------------------------------------------------------------------===//
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Constant *CreateCast(Instruction::CastOps Op, Constant *C,
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const Type *DestTy) const {
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if (C->getType() == DestTy)
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return C; // avoid calling Fold
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return Fold(ConstantExpr::getCast(Op, C, DestTy));
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}
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Constant *CreateIntCast(Constant *C, const Type *DestTy,
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bool isSigned) const {
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if (C->getType() == DestTy)
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return C; // avoid calling Fold
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return Fold(ConstantExpr::getIntegerCast(C, DestTy, isSigned));
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}
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Constant *CreateBitCast(Constant *C, const Type *DestTy) const {
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return CreateCast(Instruction::BitCast, C, DestTy);
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}
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Constant *CreateIntToPtr(Constant *C, const Type *DestTy) const {
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return CreateCast(Instruction::IntToPtr, C, DestTy);
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}
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Constant *CreatePtrToInt(Constant *C, const Type *DestTy) const {
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return CreateCast(Instruction::PtrToInt, C, DestTy);
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}
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Constant *CreateTruncOrBitCast(Constant *C, const Type *DestTy) const {
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if (C->getType() == DestTy)
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return C; // avoid calling Fold
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return Fold(ConstantExpr::getTruncOrBitCast(C, DestTy));
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}
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//===--------------------------------------------------------------------===//
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// Compare Instructions
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//===--------------------------------------------------------------------===//
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Constant *CreateICmp(CmpInst::Predicate P, Constant *LHS,
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Constant *RHS) const {
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return Fold(ConstantExpr::getCompare(P, LHS, RHS));
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}
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Constant *CreateFCmp(CmpInst::Predicate P, Constant *LHS,
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Constant *RHS) const {
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return Fold(ConstantExpr::getCompare(P, LHS, RHS));
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}
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Constant *CreateVICmp(CmpInst::Predicate P, Constant *LHS,
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Constant *RHS) const {
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return Fold(ConstantExpr::getCompare(P, LHS, RHS));
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}
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Constant *CreateVFCmp(CmpInst::Predicate P, Constant *LHS,
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Constant *RHS) const {
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return Fold(ConstantExpr::getCompare(P, LHS, RHS));
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}
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//===--------------------------------------------------------------------===//
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// Other Instructions
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//===--------------------------------------------------------------------===//
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Constant *CreateSelect(Constant *C, Constant *True, Constant *False) const {
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return Fold(ConstantExpr::getSelect(C, True, False));
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}
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Constant *CreateExtractElement(Constant *Vec, Constant *Idx) const {
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return Fold(ConstantExpr::getExtractElement(Vec, Idx));
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}
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Constant *CreateInsertElement(Constant *Vec, Constant *NewElt,
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Constant *Idx) const {
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return Fold(ConstantExpr::getInsertElement(Vec, NewElt, Idx));
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}
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Constant *CreateShuffleVector(Constant *V1, Constant *V2,
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Constant *Mask) const {
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return Fold(ConstantExpr::getShuffleVector(V1, V2, Mask));
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}
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Constant *CreateExtractValue(Constant *Agg, const unsigned *IdxList,
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unsigned NumIdx) const {
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return Fold(ConstantExpr::getExtractValue(Agg, IdxList, NumIdx));
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}
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Constant *CreateInsertValue(Constant *Agg, Constant *Val,
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const unsigned *IdxList, unsigned NumIdx) const {
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return Fold(ConstantExpr::getInsertValue(Agg, Val, IdxList, NumIdx));
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}
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};
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}
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#endif
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