1 //===-- llvm/Support/ConstantFolder.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 ConstantFolder class, a helper for IRBuilder.
11 // It provides IRBuilder with a set of methods for creating constants
12 // with minimal folding. For general constant creation and folding,
13 // use ConstantExpr and the routines in llvm/Analysis/ConstantFolding.h.
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_SUPPORT_CONSTANTFOLDER_H
18 #define LLVM_SUPPORT_CONSTANTFOLDER_H
20 #include "llvm/Constants.h"
21 #include "llvm/InstrTypes.h"
27 /// ConstantFolder - Create constants with minimum, target independent, folding.
28 class ConstantFolder {
30 explicit ConstantFolder(LLVMContext &) {}
32 //===--------------------------------------------------------------------===//
34 //===--------------------------------------------------------------------===//
36 Constant *CreateAdd(Constant *LHS, Constant *RHS) const {
37 return ConstantExpr::getAdd(LHS, RHS);
39 Constant *CreateNSWAdd(Constant *LHS, Constant *RHS) const {
40 return ConstantExpr::getNSWAdd(LHS, RHS);
42 Constant *CreateFAdd(Constant *LHS, Constant *RHS) const {
43 return ConstantExpr::getFAdd(LHS, RHS);
45 Constant *CreateSub(Constant *LHS, Constant *RHS) const {
46 return ConstantExpr::getSub(LHS, RHS);
48 Constant *CreateNSWSub(Constant *LHS, Constant *RHS) const {
49 return ConstantExpr::getNSWSub(LHS, RHS);
51 Constant *CreateFSub(Constant *LHS, Constant *RHS) const {
52 return ConstantExpr::getFSub(LHS, RHS);
54 Constant *CreateMul(Constant *LHS, Constant *RHS) const {
55 return ConstantExpr::getMul(LHS, RHS);
57 Constant *CreateFMul(Constant *LHS, Constant *RHS) const {
58 return ConstantExpr::getFMul(LHS, RHS);
60 Constant *CreateUDiv(Constant *LHS, Constant *RHS) const {
61 return ConstantExpr::getUDiv(LHS, RHS);
63 Constant *CreateSDiv(Constant *LHS, Constant *RHS) const {
64 return ConstantExpr::getSDiv(LHS, RHS);
66 Constant *CreateExactSDiv(Constant *LHS, Constant *RHS) const {
67 return ConstantExpr::getExactSDiv(LHS, RHS);
69 Constant *CreateFDiv(Constant *LHS, Constant *RHS) const {
70 return ConstantExpr::getFDiv(LHS, RHS);
72 Constant *CreateURem(Constant *LHS, Constant *RHS) const {
73 return ConstantExpr::getURem(LHS, RHS);
75 Constant *CreateSRem(Constant *LHS, Constant *RHS) const {
76 return ConstantExpr::getSRem(LHS, RHS);
78 Constant *CreateFRem(Constant *LHS, Constant *RHS) const {
79 return ConstantExpr::getFRem(LHS, RHS);
81 Constant *CreateShl(Constant *LHS, Constant *RHS) const {
82 return ConstantExpr::getShl(LHS, RHS);
84 Constant *CreateLShr(Constant *LHS, Constant *RHS) const {
85 return ConstantExpr::getLShr(LHS, RHS);
87 Constant *CreateAShr(Constant *LHS, Constant *RHS) const {
88 return ConstantExpr::getAShr(LHS, RHS);
90 Constant *CreateAnd(Constant *LHS, Constant *RHS) const {
91 return ConstantExpr::getAnd(LHS, RHS);
93 Constant *CreateOr(Constant *LHS, Constant *RHS) const {
94 return ConstantExpr::getOr(LHS, RHS);
96 Constant *CreateXor(Constant *LHS, Constant *RHS) const {
97 return ConstantExpr::getXor(LHS, RHS);
100 Constant *CreateBinOp(Instruction::BinaryOps Opc,
101 Constant *LHS, Constant *RHS) const {
102 return ConstantExpr::get(Opc, LHS, RHS);
105 //===--------------------------------------------------------------------===//
107 //===--------------------------------------------------------------------===//
109 Constant *CreateNeg(Constant *C) const {
110 return ConstantExpr::getNeg(C);
112 Constant *CreateFNeg(Constant *C) const {
113 return ConstantExpr::getFNeg(C);
115 Constant *CreateNot(Constant *C) const {
116 return ConstantExpr::getNot(C);
119 //===--------------------------------------------------------------------===//
120 // Memory Instructions
121 //===--------------------------------------------------------------------===//
123 Constant *CreateGetElementPtr(Constant *C, Constant* const *IdxList,
124 unsigned NumIdx) const {
125 return ConstantExpr::getGetElementPtr(C, IdxList, NumIdx);
127 Constant *CreateGetElementPtr(Constant *C, Value* const *IdxList,
128 unsigned NumIdx) const {
129 return ConstantExpr::getGetElementPtr(C, IdxList, NumIdx);
132 Constant *CreateInBoundsGetElementPtr(Constant *C, Constant* const *IdxList,
133 unsigned NumIdx) const {
134 return ConstantExpr::getInBoundsGetElementPtr(C, IdxList, NumIdx);
136 Constant *CreateInBoundsGetElementPtr(Constant *C, Value* const *IdxList,
137 unsigned NumIdx) const {
138 return ConstantExpr::getInBoundsGetElementPtr(C, IdxList, NumIdx);
141 //===--------------------------------------------------------------------===//
142 // Cast/Conversion Operators
143 //===--------------------------------------------------------------------===//
145 Constant *CreateCast(Instruction::CastOps Op, Constant *C,
146 const Type *DestTy) const {
147 return ConstantExpr::getCast(Op, C, DestTy);
149 Constant *CreatePointerCast(Constant *C, const Type *DestTy) const {
150 return ConstantExpr::getPointerCast(C, DestTy);
152 Constant *CreateIntCast(Constant *C, const Type *DestTy,
153 bool isSigned) const {
154 return ConstantExpr::getIntegerCast(C, DestTy, isSigned);
156 Constant *CreateFPCast(Constant *C, const Type *DestTy) const {
157 return ConstantExpr::getFPCast(C, DestTy);
160 Constant *CreateBitCast(Constant *C, const Type *DestTy) const {
161 return CreateCast(Instruction::BitCast, C, DestTy);
163 Constant *CreateIntToPtr(Constant *C, const Type *DestTy) const {
164 return CreateCast(Instruction::IntToPtr, C, DestTy);
166 Constant *CreatePtrToInt(Constant *C, const Type *DestTy) const {
167 return CreateCast(Instruction::PtrToInt, C, DestTy);
169 Constant *CreateZExtOrBitCast(Constant *C, const Type *DestTy) const {
170 return ConstantExpr::getZExtOrBitCast(C, DestTy);
172 Constant *CreateSExtOrBitCast(Constant *C, const Type *DestTy) const {
173 return ConstantExpr::getSExtOrBitCast(C, DestTy);
176 Constant *CreateTruncOrBitCast(Constant *C, const Type *DestTy) const {
177 return ConstantExpr::getTruncOrBitCast(C, DestTy);
180 //===--------------------------------------------------------------------===//
181 // Compare Instructions
182 //===--------------------------------------------------------------------===//
184 Constant *CreateICmp(CmpInst::Predicate P, Constant *LHS,
185 Constant *RHS) const {
186 return ConstantExpr::getCompare(P, LHS, RHS);
188 Constant *CreateFCmp(CmpInst::Predicate P, Constant *LHS,
189 Constant *RHS) const {
190 return ConstantExpr::getCompare(P, LHS, RHS);
193 //===--------------------------------------------------------------------===//
194 // Other Instructions
195 //===--------------------------------------------------------------------===//
197 Constant *CreateSelect(Constant *C, Constant *True, Constant *False) const {
198 return ConstantExpr::getSelect(C, True, False);
201 Constant *CreateExtractElement(Constant *Vec, Constant *Idx) const {
202 return ConstantExpr::getExtractElement(Vec, Idx);
205 Constant *CreateInsertElement(Constant *Vec, Constant *NewElt,
206 Constant *Idx) const {
207 return ConstantExpr::getInsertElement(Vec, NewElt, Idx);
210 Constant *CreateShuffleVector(Constant *V1, Constant *V2,
211 Constant *Mask) const {
212 return ConstantExpr::getShuffleVector(V1, V2, Mask);
215 Constant *CreateExtractValue(Constant *Agg, const unsigned *IdxList,
216 unsigned NumIdx) const {
217 return ConstantExpr::getExtractValue(Agg, IdxList, NumIdx);
220 Constant *CreateInsertValue(Constant *Agg, Constant *Val,
221 const unsigned *IdxList, unsigned NumIdx) const {
222 return ConstantExpr::getInsertValue(Agg, Val, IdxList, NumIdx);