1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
//======-- llvm/Support/NoFolder.h - Constant folding helper -*- C++ -*-======//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the NoFolder class, a helper for IRBuilder. It provides
// IRBuilder with a set of methods for creating unfolded constants. This is
// useful for learners trying to understand how LLVM IR works, and who don't
// want details to be hidden by the constant folder. For general constant
// creation and folding, use ConstantExpr and the routines in
// llvm/Analysis/ConstantFolding.h.
//
// Note: since it is not actually possible to create unfolded constants, this
// class returns values rather than constants. The values do not have names,
// even if names were provided to IRBuilder, which may be confusing.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_NOFOLDER_H
#define LLVM_SUPPORT_NOFOLDER_H
#include "llvm/Constants.h"
#include "llvm/Instructions.h"
namespace llvm {
class LLVMContext;
/// NoFolder - Create "constants" (actually, values) with no folding.
class NoFolder {
public:
explicit NoFolder(LLVMContext &) {}
//===--------------------------------------------------------------------===//
// Binary Operators
//===--------------------------------------------------------------------===//
Value *CreateAdd(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateAdd(LHS, RHS);
}
Value *CreateNSWAdd(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateNSWAdd(LHS, RHS);
}
Value *CreateNUWAdd(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateNUWAdd(LHS, RHS);
}
Value *CreateFAdd(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateFAdd(LHS, RHS);
}
Value *CreateSub(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateSub(LHS, RHS);
}
Value *CreateNSWSub(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateNSWSub(LHS, RHS);
}
Value *CreateNUWSub(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateNUWSub(LHS, RHS);
}
Value *CreateFSub(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateFSub(LHS, RHS);
}
Value *CreateMul(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateMul(LHS, RHS);
}
Value *CreateNSWMul(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateNSWMul(LHS, RHS);
}
Value *CreateNUWMul(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateNUWMul(LHS, RHS);
}
Value *CreateFMul(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateFMul(LHS, RHS);
}
Value *CreateUDiv(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateUDiv(LHS, RHS);
}
Value *CreateSDiv(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateSDiv(LHS, RHS);
}
Value *CreateExactSDiv(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateExactSDiv(LHS, RHS);
}
Value *CreateFDiv(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateFDiv(LHS, RHS);
}
Value *CreateURem(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateURem(LHS, RHS);
}
Value *CreateSRem(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateSRem(LHS, RHS);
}
Value *CreateFRem(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateFRem(LHS, RHS);
}
Value *CreateShl(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateShl(LHS, RHS);
}
Value *CreateLShr(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateLShr(LHS, RHS);
}
Value *CreateAShr(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateAShr(LHS, RHS);
}
Value *CreateAnd(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateAnd(LHS, RHS);
}
Value *CreateOr(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateOr(LHS, RHS);
}
Value *CreateXor(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateXor(LHS, RHS);
}
Value *CreateBinOp(Instruction::BinaryOps Opc,
Constant *LHS, Constant *RHS) const {
return BinaryOperator::Create(Opc, LHS, RHS);
}
//===--------------------------------------------------------------------===//
// Unary Operators
//===--------------------------------------------------------------------===//
Value *CreateNeg(Constant *C) const {
return BinaryOperator::CreateNeg(C);
}
Value *CreateNSWNeg(Constant *C) const {
return BinaryOperator::CreateNSWNeg(C);
}
Value *CreateNUWNeg(Constant *C) const {
return BinaryOperator::CreateNUWNeg(C);
}
Value *CreateNot(Constant *C) const {
return BinaryOperator::CreateNot(C);
}
//===--------------------------------------------------------------------===//
// Memory Instructions
//===--------------------------------------------------------------------===//
Constant *CreateGetElementPtr(Constant *C, Constant* const *IdxList,
unsigned NumIdx) const {
return ConstantExpr::getGetElementPtr(C, IdxList, NumIdx);
}
Value *CreateGetElementPtr(Constant *C, Value* const *IdxList,
unsigned NumIdx) const {
return GetElementPtrInst::Create(C, IdxList, IdxList+NumIdx);
}
Constant *CreateInBoundsGetElementPtr(Constant *C, Constant* const *IdxList,
unsigned NumIdx) const {
return ConstantExpr::getInBoundsGetElementPtr(C, IdxList, NumIdx);
}
Value *CreateInBoundsGetElementPtr(Constant *C, Value* const *IdxList,
unsigned NumIdx) const {
return GetElementPtrInst::CreateInBounds(C, IdxList, IdxList+NumIdx);
}
//===--------------------------------------------------------------------===//
// Cast/Conversion Operators
//===--------------------------------------------------------------------===//
Value *CreateCast(Instruction::CastOps Op, Constant *C,
const Type *DestTy) const {
return CastInst::Create(Op, C, DestTy);
}
Value *CreateIntCast(Constant *C, const Type *DestTy,
bool isSigned) const {
return CastInst::CreateIntegerCast(C, DestTy, isSigned);
}
//===--------------------------------------------------------------------===//
// Compare Instructions
//===--------------------------------------------------------------------===//
Value *CreateICmp(CmpInst::Predicate P, Constant *LHS, Constant *RHS) const {
return new ICmpInst(P, LHS, RHS);
}
Value *CreateFCmp(CmpInst::Predicate P, Constant *LHS, Constant *RHS) const {
return new FCmpInst(P, LHS, RHS);
}
//===--------------------------------------------------------------------===//
// Other Instructions
//===--------------------------------------------------------------------===//
Value *CreateSelect(Constant *C, Constant *True, Constant *False) const {
return SelectInst::Create(C, True, False);
}
Value *CreateExtractElement(Constant *Vec, Constant *Idx) const {
return ExtractElementInst::Create(Vec, Idx);
}
Value *CreateInsertElement(Constant *Vec, Constant *NewElt,
Constant *Idx) const {
return InsertElementInst::Create(Vec, NewElt, Idx);
}
Value *CreateShuffleVector(Constant *V1, Constant *V2, Constant *Mask) const {
return new ShuffleVectorInst(V1, V2, Mask);
}
Value *CreateExtractValue(Constant *Agg, const unsigned *IdxList,
unsigned NumIdx) const {
return ExtractValueInst::Create(Agg, IdxList, IdxList+NumIdx);
}
Value *CreateInsertValue(Constant *Agg, Constant *Val,
const unsigned *IdxList, unsigned NumIdx) const {
return InsertValueInst::Create(Agg, Val, IdxList, IdxList+NumIdx);
}
};
}
#endif
|