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"
26 /// ConstantFolder - Create constants with minimum, target independent, folding.
27 class ConstantFolder {
29 explicit ConstantFolder(LLVMContext &) {}
31 //===--------------------------------------------------------------------===//
33 //===--------------------------------------------------------------------===//
35 Constant *CreateAdd(Constant *LHS, Constant *RHS) const {
36 return ConstantExpr::getAdd(LHS, RHS);
38 Constant *CreateNSWAdd(Constant *LHS, Constant *RHS) const {
39 return ConstantExpr::getNSWAdd(LHS, RHS);
41 Constant *CreateFAdd(Constant *LHS, Constant *RHS) const {
42 return ConstantExpr::getFAdd(LHS, RHS);
44 Constant *CreateSub(Constant *LHS, Constant *RHS) const {
45 return ConstantExpr::getSub(LHS, RHS);
47 Constant *CreateFSub(Constant *LHS, Constant *RHS) const {
48 return ConstantExpr::getFSub(LHS, RHS);
50 Constant *CreateMul(Constant *LHS, Constant *RHS) const {
51 return ConstantExpr::getMul(LHS, RHS);
53 Constant *CreateFMul(Constant *LHS, Constant *RHS) const {
54 return ConstantExpr::getFMul(LHS, RHS);
56 Constant *CreateUDiv(Constant *LHS, Constant *RHS) const {
57 return ConstantExpr::getUDiv(LHS, RHS);
59 Constant *CreateSDiv(Constant *LHS, Constant *RHS) const {
60 return ConstantExpr::getSDiv(LHS, RHS);
62 Constant *CreateExactSDiv(Constant *LHS, Constant *RHS) const {
63 return ConstantExpr::getExactSDiv(LHS, RHS);
65 Constant *CreateFDiv(Constant *LHS, Constant *RHS) const {
66 return ConstantExpr::getFDiv(LHS, RHS);
68 Constant *CreateURem(Constant *LHS, Constant *RHS) const {
69 return ConstantExpr::getURem(LHS, RHS);
71 Constant *CreateSRem(Constant *LHS, Constant *RHS) const {
72 return ConstantExpr::getSRem(LHS, RHS);
74 Constant *CreateFRem(Constant *LHS, Constant *RHS) const {
75 return ConstantExpr::getFRem(LHS, RHS);
77 Constant *CreateShl(Constant *LHS, Constant *RHS) const {
78 return ConstantExpr::getShl(LHS, RHS);
80 Constant *CreateLShr(Constant *LHS, Constant *RHS) const {
81 return ConstantExpr::getLShr(LHS, RHS);
83 Constant *CreateAShr(Constant *LHS, Constant *RHS) const {
84 return ConstantExpr::getAShr(LHS, RHS);
86 Constant *CreateAnd(Constant *LHS, Constant *RHS) const {
87 return ConstantExpr::getAnd(LHS, RHS);
89 Constant *CreateOr(Constant *LHS, Constant *RHS) const {
90 return ConstantExpr::getOr(LHS, RHS);
92 Constant *CreateXor(Constant *LHS, Constant *RHS) const {
93 return ConstantExpr::getXor(LHS, RHS);
96 Constant *CreateBinOp(Instruction::BinaryOps Opc,
97 Constant *LHS, Constant *RHS) const {
98 return ConstantExpr::get(Opc, LHS, RHS);
101 //===--------------------------------------------------------------------===//
103 //===--------------------------------------------------------------------===//
105 Constant *CreateNeg(Constant *C) const {
106 return ConstantExpr::getNeg(C);
108 Constant *CreateFNeg(Constant *C) const {
109 return ConstantExpr::getFNeg(C);
111 Constant *CreateNot(Constant *C) const {
112 return ConstantExpr::getNot(C);
115 //===--------------------------------------------------------------------===//
116 // Memory Instructions
117 //===--------------------------------------------------------------------===//
119 Constant *CreateGetElementPtr(Constant *C, Constant* const *IdxList,
120 unsigned NumIdx) const {
121 return ConstantExpr::getGetElementPtr(C, IdxList, NumIdx);
123 Constant *CreateGetElementPtr(Constant *C, Value* const *IdxList,
124 unsigned NumIdx) const {
125 return ConstantExpr::getGetElementPtr(C, IdxList, NumIdx);
128 Constant *CreateInBoundsGetElementPtr(Constant *C, Constant* const *IdxList,
129 unsigned NumIdx) const {
130 return ConstantExpr::getInBoundsGetElementPtr(C, IdxList, NumIdx);
132 Constant *CreateInBoundsGetElementPtr(Constant *C, Value* const *IdxList,
133 unsigned NumIdx) const {
134 return ConstantExpr::getInBoundsGetElementPtr(C, IdxList, NumIdx);
137 //===--------------------------------------------------------------------===//
138 // Cast/Conversion Operators
139 //===--------------------------------------------------------------------===//
141 Constant *CreateCast(Instruction::CastOps Op, Constant *C,
142 const Type *DestTy) const {
143 return ConstantExpr::getCast(Op, C, DestTy);
145 Constant *CreateIntCast(Constant *C, const Type *DestTy,
146 bool isSigned) const {
147 return ConstantExpr::getIntegerCast(C, DestTy, isSigned);
150 Constant *CreateBitCast(Constant *C, const Type *DestTy) const {
151 return CreateCast(Instruction::BitCast, C, DestTy);
153 Constant *CreateIntToPtr(Constant *C, const Type *DestTy) const {
154 return CreateCast(Instruction::IntToPtr, C, DestTy);
156 Constant *CreatePtrToInt(Constant *C, const Type *DestTy) const {
157 return CreateCast(Instruction::PtrToInt, C, DestTy);
159 Constant *CreateTruncOrBitCast(Constant *C, const Type *DestTy) const {
160 return ConstantExpr::getTruncOrBitCast(C, DestTy);
163 //===--------------------------------------------------------------------===//
164 // Compare Instructions
165 //===--------------------------------------------------------------------===//
167 Constant *CreateICmp(CmpInst::Predicate P, Constant *LHS,
168 Constant *RHS) const {
169 return ConstantExpr::getCompare(P, LHS, RHS);
171 Constant *CreateFCmp(CmpInst::Predicate P, Constant *LHS,
172 Constant *RHS) const {
173 return ConstantExpr::getCompare(P, LHS, RHS);
176 //===--------------------------------------------------------------------===//
177 // Other Instructions
178 //===--------------------------------------------------------------------===//
180 Constant *CreateSelect(Constant *C, Constant *True, Constant *False) const {
181 return ConstantExpr::getSelect(C, True, False);
184 Constant *CreateExtractElement(Constant *Vec, Constant *Idx) const {
185 return ConstantExpr::getExtractElement(Vec, Idx);
188 Constant *CreateInsertElement(Constant *Vec, Constant *NewElt,
189 Constant *Idx) const {
190 return ConstantExpr::getInsertElement(Vec, NewElt, Idx);
193 Constant *CreateShuffleVector(Constant *V1, Constant *V2,
194 Constant *Mask) const {
195 return ConstantExpr::getShuffleVector(V1, V2, Mask);
198 Constant *CreateExtractValue(Constant *Agg, const unsigned *IdxList,
199 unsigned NumIdx) const {
200 return ConstantExpr::getExtractValue(Agg, IdxList, NumIdx);
203 Constant *CreateInsertValue(Constant *Agg, Constant *Val,
204 const unsigned *IdxList, unsigned NumIdx) const {
205 return ConstantExpr::getInsertValue(Agg, Val, IdxList, NumIdx);