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 *CreateFAdd(Constant *LHS, Constant *RHS) const {
39 return ConstantExpr::getFAdd(LHS, RHS);
41 Constant *CreateSub(Constant *LHS, Constant *RHS) const {
42 return ConstantExpr::getSub(LHS, RHS);
44 Constant *CreateFSub(Constant *LHS, Constant *RHS) const {
45 return ConstantExpr::getFSub(LHS, RHS);
47 Constant *CreateMul(Constant *LHS, Constant *RHS) const {
48 return ConstantExpr::getMul(LHS, RHS);
50 Constant *CreateFMul(Constant *LHS, Constant *RHS) const {
51 return ConstantExpr::getFMul(LHS, RHS);
53 Constant *CreateUDiv(Constant *LHS, Constant *RHS) const {
54 return ConstantExpr::getUDiv(LHS, RHS);
56 Constant *CreateSDiv(Constant *LHS, Constant *RHS) const {
57 return ConstantExpr::getSDiv(LHS, RHS);
59 Constant *CreateFDiv(Constant *LHS, Constant *RHS) const {
60 return ConstantExpr::getFDiv(LHS, RHS);
62 Constant *CreateURem(Constant *LHS, Constant *RHS) const {
63 return ConstantExpr::getURem(LHS, RHS);
65 Constant *CreateSRem(Constant *LHS, Constant *RHS) const {
66 return ConstantExpr::getSRem(LHS, RHS);
68 Constant *CreateFRem(Constant *LHS, Constant *RHS) const {
69 return ConstantExpr::getFRem(LHS, RHS);
71 Constant *CreateShl(Constant *LHS, Constant *RHS) const {
72 return ConstantExpr::getShl(LHS, RHS);
74 Constant *CreateLShr(Constant *LHS, Constant *RHS) const {
75 return ConstantExpr::getLShr(LHS, RHS);
77 Constant *CreateAShr(Constant *LHS, Constant *RHS) const {
78 return ConstantExpr::getAShr(LHS, RHS);
80 Constant *CreateAnd(Constant *LHS, Constant *RHS) const {
81 return ConstantExpr::getAnd(LHS, RHS);
83 Constant *CreateOr(Constant *LHS, Constant *RHS) const {
84 return ConstantExpr::getOr(LHS, RHS);
86 Constant *CreateXor(Constant *LHS, Constant *RHS) const {
87 return ConstantExpr::getXor(LHS, RHS);
90 Constant *CreateBinOp(Instruction::BinaryOps Opc,
91 Constant *LHS, Constant *RHS) const {
92 return ConstantExpr::get(Opc, LHS, RHS);
95 //===--------------------------------------------------------------------===//
97 //===--------------------------------------------------------------------===//
99 Constant *CreateNeg(Constant *C) const {
100 return ConstantExpr::getNeg(C);
102 Constant *CreateFNeg(Constant *C) const {
103 return ConstantExpr::getFNeg(C);
105 Constant *CreateNot(Constant *C) const {
106 return ConstantExpr::getNot(C);
109 //===--------------------------------------------------------------------===//
110 // Memory Instructions
111 //===--------------------------------------------------------------------===//
113 Constant *CreateGetElementPtr(Constant *C, Constant* const *IdxList,
114 unsigned NumIdx) const {
115 return ConstantExpr::getGetElementPtr(C, IdxList, NumIdx);
117 Constant *CreateGetElementPtr(Constant *C, Value* const *IdxList,
118 unsigned NumIdx) const {
119 return ConstantExpr::getGetElementPtr(C, IdxList, NumIdx);
122 //===--------------------------------------------------------------------===//
123 // Cast/Conversion Operators
124 //===--------------------------------------------------------------------===//
126 Constant *CreateCast(Instruction::CastOps Op, Constant *C,
127 const Type *DestTy) const {
128 return ConstantExpr::getCast(Op, C, DestTy);
130 Constant *CreateIntCast(Constant *C, const Type *DestTy,
131 bool isSigned) const {
132 return ConstantExpr::getIntegerCast(C, DestTy, isSigned);
135 Constant *CreateBitCast(Constant *C, const Type *DestTy) const {
136 return CreateCast(Instruction::BitCast, C, DestTy);
138 Constant *CreateIntToPtr(Constant *C, const Type *DestTy) const {
139 return CreateCast(Instruction::IntToPtr, C, DestTy);
141 Constant *CreatePtrToInt(Constant *C, const Type *DestTy) const {
142 return CreateCast(Instruction::PtrToInt, C, DestTy);
144 Constant *CreateTruncOrBitCast(Constant *C, const Type *DestTy) const {
145 return ConstantExpr::getTruncOrBitCast(C, DestTy);
148 //===--------------------------------------------------------------------===//
149 // Compare Instructions
150 //===--------------------------------------------------------------------===//
152 Constant *CreateICmp(CmpInst::Predicate P, Constant *LHS,
153 Constant *RHS) const {
154 return ConstantExpr::getCompare(P, LHS, RHS);
156 Constant *CreateFCmp(CmpInst::Predicate P, Constant *LHS,
157 Constant *RHS) const {
158 return ConstantExpr::getCompare(P, LHS, RHS);
161 //===--------------------------------------------------------------------===//
162 // Other Instructions
163 //===--------------------------------------------------------------------===//
165 Constant *CreateSelect(Constant *C, Constant *True, Constant *False) const {
166 return ConstantExpr::getSelect(C, True, False);
169 Constant *CreateExtractElement(Constant *Vec, Constant *Idx) const {
170 return ConstantExpr::getExtractElement(Vec, Idx);
173 Constant *CreateInsertElement(Constant *Vec, Constant *NewElt,
174 Constant *Idx) const {
175 return ConstantExpr::getInsertElement(Vec, NewElt, Idx);
178 Constant *CreateShuffleVector(Constant *V1, Constant *V2,
179 Constant *Mask) const {
180 return ConstantExpr::getShuffleVector(V1, V2, Mask);
183 Constant *CreateExtractValue(Constant *Agg, const unsigned *IdxList,
184 unsigned NumIdx) const {
185 return ConstantExpr::getExtractValue(Agg, IdxList, NumIdx);
188 Constant *CreateInsertValue(Constant *Agg, Constant *Val,
189 const unsigned *IdxList, unsigned NumIdx) const {
190 return ConstantExpr::getInsertValue(Agg, Val, IdxList, NumIdx);