]>
Commit | Line | Data |
---|---|---|
1a4d82fc | 1 | //====- TargetFolder.h - Constant folding helper ---------------*- C++ -*-====// |
223e47cc LB |
2 | // |
3 | // The LLVM Compiler Infrastructure | |
4 | // | |
5 | // This file is distributed under the University of Illinois Open Source | |
6 | // License. See LICENSE.TXT for details. | |
7 | // | |
8 | //===----------------------------------------------------------------------===// | |
9 | // | |
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, in addition to the same target-independent | |
13 | // folding that the ConstantFolder class provides. For general constant | |
14 | // creation and folding, use ConstantExpr and the routines in | |
15 | // llvm/Analysis/ConstantFolding.h. | |
16 | // | |
17 | //===----------------------------------------------------------------------===// | |
18 | ||
1a4d82fc JJ |
19 | #ifndef LLVM_ANALYSIS_TARGETFOLDER_H |
20 | #define LLVM_ANALYSIS_TARGETFOLDER_H | |
223e47cc | 21 | |
223e47cc LB |
22 | #include "llvm/ADT/ArrayRef.h" |
23 | #include "llvm/Analysis/ConstantFolding.h" | |
970d7e83 LB |
24 | #include "llvm/IR/Constants.h" |
25 | #include "llvm/IR/InstrTypes.h" | |
223e47cc LB |
26 | |
27 | namespace llvm { | |
28 | ||
970d7e83 | 29 | class DataLayout; |
223e47cc LB |
30 | |
31 | /// TargetFolder - Create constants with target dependent folding. | |
32 | class TargetFolder { | |
1a4d82fc | 33 | const DataLayout *DL; |
223e47cc LB |
34 | |
35 | /// Fold - Fold the constant using target specific information. | |
36 | Constant *Fold(Constant *C) const { | |
37 | if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) | |
1a4d82fc | 38 | if (Constant *CF = ConstantFoldConstantExpression(CE, DL)) |
223e47cc LB |
39 | return CF; |
40 | return C; | |
41 | } | |
42 | ||
43 | public: | |
1a4d82fc | 44 | explicit TargetFolder(const DataLayout *DL) : DL(DL) {} |
223e47cc LB |
45 | |
46 | //===--------------------------------------------------------------------===// | |
47 | // Binary Operators | |
48 | //===--------------------------------------------------------------------===// | |
49 | ||
50 | Constant *CreateAdd(Constant *LHS, Constant *RHS, | |
51 | bool HasNUW = false, bool HasNSW = false) const { | |
52 | return Fold(ConstantExpr::getAdd(LHS, RHS, HasNUW, HasNSW)); | |
53 | } | |
54 | Constant *CreateFAdd(Constant *LHS, Constant *RHS) const { | |
55 | return Fold(ConstantExpr::getFAdd(LHS, RHS)); | |
56 | } | |
57 | Constant *CreateSub(Constant *LHS, Constant *RHS, | |
58 | bool HasNUW = false, bool HasNSW = false) const { | |
59 | return Fold(ConstantExpr::getSub(LHS, RHS, HasNUW, HasNSW)); | |
60 | } | |
61 | Constant *CreateFSub(Constant *LHS, Constant *RHS) const { | |
62 | return Fold(ConstantExpr::getFSub(LHS, RHS)); | |
63 | } | |
64 | Constant *CreateMul(Constant *LHS, Constant *RHS, | |
65 | bool HasNUW = false, bool HasNSW = false) const { | |
66 | return Fold(ConstantExpr::getMul(LHS, RHS, HasNUW, HasNSW)); | |
67 | } | |
68 | Constant *CreateFMul(Constant *LHS, Constant *RHS) const { | |
69 | return Fold(ConstantExpr::getFMul(LHS, RHS)); | |
70 | } | |
71 | Constant *CreateUDiv(Constant *LHS, Constant *RHS, bool isExact = false)const{ | |
72 | return Fold(ConstantExpr::getUDiv(LHS, RHS, isExact)); | |
73 | } | |
74 | Constant *CreateSDiv(Constant *LHS, Constant *RHS, bool isExact = false)const{ | |
75 | return Fold(ConstantExpr::getSDiv(LHS, RHS, isExact)); | |
76 | } | |
77 | Constant *CreateFDiv(Constant *LHS, Constant *RHS) const { | |
78 | return Fold(ConstantExpr::getFDiv(LHS, RHS)); | |
79 | } | |
80 | Constant *CreateURem(Constant *LHS, Constant *RHS) const { | |
81 | return Fold(ConstantExpr::getURem(LHS, RHS)); | |
82 | } | |
83 | Constant *CreateSRem(Constant *LHS, Constant *RHS) const { | |
84 | return Fold(ConstantExpr::getSRem(LHS, RHS)); | |
85 | } | |
86 | Constant *CreateFRem(Constant *LHS, Constant *RHS) const { | |
87 | return Fold(ConstantExpr::getFRem(LHS, RHS)); | |
88 | } | |
89 | Constant *CreateShl(Constant *LHS, Constant *RHS, | |
90 | bool HasNUW = false, bool HasNSW = false) const { | |
91 | return Fold(ConstantExpr::getShl(LHS, RHS, HasNUW, HasNSW)); | |
92 | } | |
93 | Constant *CreateLShr(Constant *LHS, Constant *RHS, bool isExact = false)const{ | |
94 | return Fold(ConstantExpr::getLShr(LHS, RHS, isExact)); | |
95 | } | |
96 | Constant *CreateAShr(Constant *LHS, Constant *RHS, bool isExact = false)const{ | |
97 | return Fold(ConstantExpr::getAShr(LHS, RHS, isExact)); | |
98 | } | |
99 | Constant *CreateAnd(Constant *LHS, Constant *RHS) const { | |
100 | return Fold(ConstantExpr::getAnd(LHS, RHS)); | |
101 | } | |
102 | Constant *CreateOr(Constant *LHS, Constant *RHS) const { | |
103 | return Fold(ConstantExpr::getOr(LHS, RHS)); | |
104 | } | |
105 | Constant *CreateXor(Constant *LHS, Constant *RHS) const { | |
106 | return Fold(ConstantExpr::getXor(LHS, RHS)); | |
107 | } | |
108 | ||
109 | Constant *CreateBinOp(Instruction::BinaryOps Opc, | |
110 | Constant *LHS, Constant *RHS) const { | |
111 | return Fold(ConstantExpr::get(Opc, LHS, RHS)); | |
112 | } | |
113 | ||
114 | //===--------------------------------------------------------------------===// | |
115 | // Unary Operators | |
116 | //===--------------------------------------------------------------------===// | |
117 | ||
118 | Constant *CreateNeg(Constant *C, | |
119 | bool HasNUW = false, bool HasNSW = false) const { | |
120 | return Fold(ConstantExpr::getNeg(C, HasNUW, HasNSW)); | |
121 | } | |
122 | Constant *CreateFNeg(Constant *C) const { | |
123 | return Fold(ConstantExpr::getFNeg(C)); | |
124 | } | |
125 | Constant *CreateNot(Constant *C) const { | |
126 | return Fold(ConstantExpr::getNot(C)); | |
127 | } | |
128 | ||
129 | //===--------------------------------------------------------------------===// | |
130 | // Memory Instructions | |
131 | //===--------------------------------------------------------------------===// | |
132 | ||
133 | Constant *CreateGetElementPtr(Constant *C, | |
134 | ArrayRef<Constant *> IdxList) const { | |
135 | return Fold(ConstantExpr::getGetElementPtr(C, IdxList)); | |
136 | } | |
137 | Constant *CreateGetElementPtr(Constant *C, Constant *Idx) const { | |
138 | // This form of the function only exists to avoid ambiguous overload | |
139 | // warnings about whether to convert Idx to ArrayRef<Constant *> or | |
140 | // ArrayRef<Value *>. | |
141 | return Fold(ConstantExpr::getGetElementPtr(C, Idx)); | |
142 | } | |
143 | Constant *CreateGetElementPtr(Constant *C, | |
144 | ArrayRef<Value *> IdxList) const { | |
145 | return Fold(ConstantExpr::getGetElementPtr(C, IdxList)); | |
146 | } | |
147 | ||
148 | Constant *CreateInBoundsGetElementPtr(Constant *C, | |
149 | ArrayRef<Constant *> IdxList) const { | |
150 | return Fold(ConstantExpr::getInBoundsGetElementPtr(C, IdxList)); | |
151 | } | |
152 | Constant *CreateInBoundsGetElementPtr(Constant *C, Constant *Idx) const { | |
153 | // This form of the function only exists to avoid ambiguous overload | |
154 | // warnings about whether to convert Idx to ArrayRef<Constant *> or | |
155 | // ArrayRef<Value *>. | |
156 | return Fold(ConstantExpr::getInBoundsGetElementPtr(C, Idx)); | |
157 | } | |
158 | Constant *CreateInBoundsGetElementPtr(Constant *C, | |
159 | ArrayRef<Value *> IdxList) const { | |
160 | return Fold(ConstantExpr::getInBoundsGetElementPtr(C, IdxList)); | |
161 | } | |
162 | ||
163 | //===--------------------------------------------------------------------===// | |
164 | // Cast/Conversion Operators | |
165 | //===--------------------------------------------------------------------===// | |
166 | ||
167 | Constant *CreateCast(Instruction::CastOps Op, Constant *C, | |
168 | Type *DestTy) const { | |
169 | if (C->getType() == DestTy) | |
170 | return C; // avoid calling Fold | |
171 | return Fold(ConstantExpr::getCast(Op, C, DestTy)); | |
172 | } | |
173 | Constant *CreateIntCast(Constant *C, Type *DestTy, | |
174 | bool isSigned) const { | |
175 | if (C->getType() == DestTy) | |
176 | return C; // avoid calling Fold | |
177 | return Fold(ConstantExpr::getIntegerCast(C, DestTy, isSigned)); | |
178 | } | |
179 | Constant *CreatePointerCast(Constant *C, Type *DestTy) const { | |
180 | if (C->getType() == DestTy) | |
181 | return C; // avoid calling Fold | |
182 | return Fold(ConstantExpr::getPointerCast(C, DestTy)); | |
183 | } | |
184 | Constant *CreateFPCast(Constant *C, Type *DestTy) const { | |
185 | if (C->getType() == DestTy) | |
186 | return C; // avoid calling Fold | |
187 | return Fold(ConstantExpr::getFPCast(C, DestTy)); | |
188 | } | |
189 | Constant *CreateBitCast(Constant *C, Type *DestTy) const { | |
190 | return CreateCast(Instruction::BitCast, C, DestTy); | |
191 | } | |
192 | Constant *CreateIntToPtr(Constant *C, Type *DestTy) const { | |
193 | return CreateCast(Instruction::IntToPtr, C, DestTy); | |
194 | } | |
195 | Constant *CreatePtrToInt(Constant *C, Type *DestTy) const { | |
196 | return CreateCast(Instruction::PtrToInt, C, DestTy); | |
197 | } | |
198 | Constant *CreateZExtOrBitCast(Constant *C, Type *DestTy) const { | |
199 | if (C->getType() == DestTy) | |
200 | return C; // avoid calling Fold | |
201 | return Fold(ConstantExpr::getZExtOrBitCast(C, DestTy)); | |
202 | } | |
203 | Constant *CreateSExtOrBitCast(Constant *C, Type *DestTy) const { | |
204 | if (C->getType() == DestTy) | |
205 | return C; // avoid calling Fold | |
206 | return Fold(ConstantExpr::getSExtOrBitCast(C, DestTy)); | |
207 | } | |
208 | Constant *CreateTruncOrBitCast(Constant *C, Type *DestTy) const { | |
209 | if (C->getType() == DestTy) | |
210 | return C; // avoid calling Fold | |
211 | return Fold(ConstantExpr::getTruncOrBitCast(C, DestTy)); | |
212 | } | |
213 | ||
1a4d82fc JJ |
214 | Constant *CreatePointerBitCastOrAddrSpaceCast(Constant *C, |
215 | Type *DestTy) const { | |
216 | if (C->getType() == DestTy) | |
217 | return C; // avoid calling Fold | |
218 | return Fold(ConstantExpr::getPointerBitCastOrAddrSpaceCast(C, DestTy)); | |
219 | } | |
220 | ||
223e47cc LB |
221 | //===--------------------------------------------------------------------===// |
222 | // Compare Instructions | |
223 | //===--------------------------------------------------------------------===// | |
224 | ||
225 | Constant *CreateICmp(CmpInst::Predicate P, Constant *LHS, | |
226 | Constant *RHS) const { | |
227 | return Fold(ConstantExpr::getCompare(P, LHS, RHS)); | |
228 | } | |
229 | Constant *CreateFCmp(CmpInst::Predicate P, Constant *LHS, | |
230 | Constant *RHS) const { | |
231 | return Fold(ConstantExpr::getCompare(P, LHS, RHS)); | |
232 | } | |
233 | ||
234 | //===--------------------------------------------------------------------===// | |
235 | // Other Instructions | |
236 | //===--------------------------------------------------------------------===// | |
237 | ||
238 | Constant *CreateSelect(Constant *C, Constant *True, Constant *False) const { | |
239 | return Fold(ConstantExpr::getSelect(C, True, False)); | |
240 | } | |
241 | ||
242 | Constant *CreateExtractElement(Constant *Vec, Constant *Idx) const { | |
243 | return Fold(ConstantExpr::getExtractElement(Vec, Idx)); | |
244 | } | |
245 | ||
246 | Constant *CreateInsertElement(Constant *Vec, Constant *NewElt, | |
247 | Constant *Idx) const { | |
248 | return Fold(ConstantExpr::getInsertElement(Vec, NewElt, Idx)); | |
249 | } | |
250 | ||
251 | Constant *CreateShuffleVector(Constant *V1, Constant *V2, | |
252 | Constant *Mask) const { | |
253 | return Fold(ConstantExpr::getShuffleVector(V1, V2, Mask)); | |
254 | } | |
255 | ||
256 | Constant *CreateExtractValue(Constant *Agg, | |
257 | ArrayRef<unsigned> IdxList) const { | |
258 | return Fold(ConstantExpr::getExtractValue(Agg, IdxList)); | |
259 | } | |
260 | ||
261 | Constant *CreateInsertValue(Constant *Agg, Constant *Val, | |
262 | ArrayRef<unsigned> IdxList) const { | |
263 | return Fold(ConstantExpr::getInsertValue(Agg, Val, IdxList)); | |
264 | } | |
265 | }; | |
266 | ||
267 | } | |
268 | ||
269 | #endif |