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
|
//===-- ConstantFolding.h - Internal Constant Folding Interface -*- 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 (internal) constant folding interfaces for LLVM. These
// interfaces are used by the ConstantExpr::get* methods to automatically fold
// constants when possible.
//
// These operators may return a null object if they don't know how to perform
// the specified operation on the specified constant types.
//
//===----------------------------------------------------------------------===//
#ifndef CONSTANTFOLDING_H
#define CONSTANTFOLDING_H
namespace llvm {
class Value;
class Constant;
class Type;
// Constant fold various types of instruction...
Constant *ConstantFoldCastInstruction(
unsigned opcode, ///< The opcode of the cast
const Constant *V, ///< The source constant
const Type *DestTy ///< The destination type
);
Constant *ConstantFoldSelectInstruction(const Constant *Cond,
const Constant *V1,
const Constant *V2);
Constant *ConstantFoldExtractElementInstruction(const Constant *Val,
const Constant *Idx);
Constant *ConstantFoldInsertElementInstruction(const Constant *Val,
const Constant *Elt,
const Constant *Idx);
Constant *ConstantFoldShuffleVectorInstruction(const Constant *V1,
const Constant *V2,
const Constant *Mask);
Constant *ConstantFoldExtractValueInstruction(const Constant *Agg,
const unsigned *Idxs,
unsigned NumIdx);
Constant *ConstantFoldInsertValueInstruction(const Constant *Agg,
const Constant *Val,
const unsigned* Idxs,
unsigned NumIdx);
Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
const Constant *V2);
Constant *ConstantFoldCompareInstruction(unsigned short predicate,
const Constant *C1,
const Constant *C2);
Constant *ConstantFoldGetElementPtr(const Constant *C,
Constant* const *Idxs, unsigned NumIdx);
} // End llvm namespace
#endif
|
