1 //====-- llvm/Support/TargetFolder.h - Constant folding helper -*- C++ -*-====//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the TargetFolder class, a helper for IRBuilder.
11 // It provides IRBuilder with a set of methods for creating constants with
12 // target dependent folding. For general constant creation and folding,
13 // use ConstantExpr and the routines in llvm/Analysis/ConstantFolding.h.
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_SUPPORT_TARGETFOLDER_H
18 #define LLVM_SUPPORT_TARGETFOLDER_H
20 #include "llvm/Constants.h"
21 #include "llvm/Analysis/ConstantFolding.h"
27 /// TargetFolder - Create constants with target dependent folding.
31 /// Fold - Fold the constant using target specific information.
32 Constant *Fold(Constant *C) const {
33 if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C))
34 if (Constant *CF = ConstantFoldConstantExpression(CE, &TD))
40 TargetFolder(const TargetData &TheTD) : TD(TheTD) {}
42 //===--------------------------------------------------------------------===//
44 //===--------------------------------------------------------------------===//
46 Constant *CreateAdd(Constant *LHS, Constant *RHS) const {
47 return Fold(ConstantExpr::getAdd(LHS, RHS));
49 Constant *CreateSub(Constant *LHS, Constant *RHS) const {
50 return Fold(ConstantExpr::getSub(LHS, RHS));
52 Constant *CreateMul(Constant *LHS, Constant *RHS) const {
53 return Fold(ConstantExpr::getMul(LHS, RHS));
55 Constant *CreateUDiv(Constant *LHS, Constant *RHS) const {
56 return Fold(ConstantExpr::getUDiv(LHS, RHS));
58 Constant *CreateSDiv(Constant *LHS, Constant *RHS) const {
59 return Fold(ConstantExpr::getSDiv(LHS, RHS));
61 Constant *CreateFDiv(Constant *LHS, Constant *RHS) const {
62 return Fold(ConstantExpr::getFDiv(LHS, RHS));
64 Constant *CreateURem(Constant *LHS, Constant *RHS) const {
65 return Fold(ConstantExpr::getURem(LHS, RHS));
67 Constant *CreateSRem(Constant *LHS, Constant *RHS) const {
68 return Fold(ConstantExpr::getSRem(LHS, RHS));
70 Constant *CreateFRem(Constant *LHS, Constant *RHS) const {
71 return Fold(ConstantExpr::getFRem(LHS, RHS));
73 Constant *CreateShl(Constant *LHS, Constant *RHS) const {
74 return Fold(ConstantExpr::getShl(LHS, RHS));
76 Constant *CreateLShr(Constant *LHS, Constant *RHS) const {
77 return Fold(ConstantExpr::getLShr(LHS, RHS));
79 Constant *CreateAShr(Constant *LHS, Constant *RHS) const {
80 return Fold(ConstantExpr::getAShr(LHS, RHS));
82 Constant *CreateAnd(Constant *LHS, Constant *RHS) const {
83 return Fold(ConstantExpr::getAnd(LHS, RHS));
85 Constant *CreateOr(Constant *LHS, Constant *RHS) const {
86 return Fold(ConstantExpr::getOr(LHS, RHS));
88 Constant *CreateXor(Constant *LHS, Constant *RHS) const {
89 return Fold(ConstantExpr::getXor(LHS, RHS));
92 Constant *CreateBinOp(Instruction::BinaryOps Opc,
93 Constant *LHS, Constant *RHS) const {
94 return Fold(ConstantExpr::get(Opc, LHS, RHS));
97 //===--------------------------------------------------------------------===//
99 //===--------------------------------------------------------------------===//
101 Constant *CreateNeg(Constant *C) const {
102 return Fold(ConstantExpr::getNeg(C));
104 Constant *CreateNot(Constant *C) const {
105 return Fold(ConstantExpr::getNot(C));
108 //===--------------------------------------------------------------------===//
109 // Memory Instructions
110 //===--------------------------------------------------------------------===//
112 Constant *CreateGetElementPtr(Constant *C, Constant* const *IdxList,
113 unsigned NumIdx) const {
114 return Fold(ConstantExpr::getGetElementPtr(C, IdxList, NumIdx));
116 Constant *CreateGetElementPtr(Constant *C, Value* const *IdxList,
117 unsigned NumIdx) const {
118 return Fold(ConstantExpr::getGetElementPtr(C, IdxList, NumIdx));
121 //===--------------------------------------------------------------------===//
122 // Cast/Conversion Operators
123 //===--------------------------------------------------------------------===//
125 Constant *CreateCast(Instruction::CastOps Op, Constant *C,
126 const Type *DestTy) const {
127 if (C->getType() == DestTy)
128 return C; // avoid calling Fold
129 return Fold(ConstantExpr::getCast(Op, C, DestTy));
131 Constant *CreateIntCast(Constant *C, const Type *DestTy,
132 bool isSigned) const {
133 if (C->getType() == DestTy)
134 return C; // avoid calling Fold
135 return Fold(ConstantExpr::getIntegerCast(C, DestTy, isSigned));
138 Constant *CreateBitCast(Constant *C, const Type *DestTy) const {
139 return CreateCast(Instruction::BitCast, C, DestTy);
141 Constant *CreateIntToPtr(Constant *C, const Type *DestTy) const {
142 return CreateCast(Instruction::IntToPtr, C, DestTy);
144 Constant *CreatePtrToInt(Constant *C, const Type *DestTy) const {
145 return CreateCast(Instruction::PtrToInt, C, DestTy);
147 Constant *CreateTruncOrBitCast(Constant *C, const Type *DestTy) const {
148 if (C->getType() == DestTy)
149 return C; // avoid calling Fold
150 return Fold(ConstantExpr::getTruncOrBitCast(C, DestTy));
153 //===--------------------------------------------------------------------===//
154 // Compare Instructions
155 //===--------------------------------------------------------------------===//
157 Constant *CreateICmp(CmpInst::Predicate P, Constant *LHS,
158 Constant *RHS) const {
159 return Fold(ConstantExpr::getCompare(P, LHS, RHS));
161 Constant *CreateFCmp(CmpInst::Predicate P, Constant *LHS,
162 Constant *RHS) const {
163 return Fold(ConstantExpr::getCompare(P, LHS, RHS));
165 Constant *CreateVICmp(CmpInst::Predicate P, Constant *LHS,
166 Constant *RHS) const {
167 return Fold(ConstantExpr::getCompare(P, LHS, RHS));
169 Constant *CreateVFCmp(CmpInst::Predicate P, Constant *LHS,
170 Constant *RHS) const {
171 return Fold(ConstantExpr::getCompare(P, LHS, RHS));
174 //===--------------------------------------------------------------------===//
175 // Other Instructions
176 //===--------------------------------------------------------------------===//
178 Constant *CreateSelect(Constant *C, Constant *True, Constant *False) const {
179 return Fold(ConstantExpr::getSelect(C, True, False));
182 Constant *CreateExtractElement(Constant *Vec, Constant *Idx) const {
183 return Fold(ConstantExpr::getExtractElement(Vec, Idx));
186 Constant *CreateInsertElement(Constant *Vec, Constant *NewElt,
187 Constant *Idx) const {
188 return Fold(ConstantExpr::getInsertElement(Vec, NewElt, Idx));
191 Constant *CreateShuffleVector(Constant *V1, Constant *V2,
192 Constant *Mask) const {
193 return Fold(ConstantExpr::getShuffleVector(V1, V2, Mask));
196 Constant *CreateExtractValue(Constant *Agg, const unsigned *IdxList,
197 unsigned NumIdx) const {
198 return Fold(ConstantExpr::getExtractValue(Agg, IdxList, NumIdx));
201 Constant *CreateInsertValue(Constant *Agg, Constant *Val,
202 const unsigned *IdxList, unsigned NumIdx) const {
203 return Fold(ConstantExpr::getInsertValue(Agg, Val, IdxList, NumIdx));