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
|
//===- ValueMapper.h - Remapping for constants and metadata -----*- 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 MapValue interface which is used by various parts of
// the Transforms/Utils library to implement cloning and linking facilities.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_UTILS_VALUEMAPPER_H
#define LLVM_TRANSFORMS_UTILS_VALUEMAPPER_H
#include "llvm/IR/ValueMap.h"
namespace llvm {
class Value;
class Instruction;
typedef ValueMap<const Value *, WeakVH> ValueToValueMapTy;
/// ValueMapTypeRemapper - This is a class that can be implemented by clients
/// to remap types when cloning constants and instructions.
class ValueMapTypeRemapper {
virtual void anchor(); // Out of line method.
public:
virtual ~ValueMapTypeRemapper() {}
/// remapType - The client should implement this method if they want to
/// remap types while mapping values.
virtual Type *remapType(Type *SrcTy) = 0;
};
/// ValueMaterializer - This is a class that can be implemented by clients
/// to materialize Values on demand.
class ValueMaterializer {
virtual void anchor(); // Out of line method.
public:
virtual ~ValueMaterializer() {}
/// materializeValueFor - The client should implement this method if they
/// want to generate a mapped Value on demand. For example, if linking
/// lazily.
virtual Value *materializeValueFor(Value *V) = 0;
};
/// RemapFlags - These are flags that the value mapping APIs allow.
enum RemapFlags {
RF_None = 0,
/// RF_NoModuleLevelChanges - If this flag is set, the remapper knows that
/// only local values within a function (such as an instruction or argument)
/// are mapped, not global values like functions and global metadata.
RF_NoModuleLevelChanges = 1,
/// RF_IgnoreMissingEntries - If this flag is set, the remapper ignores
/// entries that are not in the value map. If it is unset, it aborts if an
/// operand is asked to be remapped which doesn't exist in the mapping.
RF_IgnoreMissingEntries = 2
};
static inline RemapFlags operator|(RemapFlags LHS, RemapFlags RHS) {
return RemapFlags(unsigned(LHS)|unsigned(RHS));
}
Value *MapValue(const Value *V, ValueToValueMapTy &VM,
RemapFlags Flags = RF_None,
ValueMapTypeRemapper *TypeMapper = 0,
ValueMaterializer *Materializer = 0);
void RemapInstruction(Instruction *I, ValueToValueMapTy &VM,
RemapFlags Flags = RF_None,
ValueMapTypeRemapper *TypeMapper = 0,
ValueMaterializer *Materializer = 0);
/// MapValue - provide versions that preserve type safety for MDNode and
/// Constants.
inline MDNode *MapValue(const MDNode *V, ValueToValueMapTy &VM,
RemapFlags Flags = RF_None,
ValueMapTypeRemapper *TypeMapper = 0,
ValueMaterializer *Materializer = 0) {
return cast<MDNode>(MapValue((const Value*)V, VM, Flags, TypeMapper,
Materializer));
}
inline Constant *MapValue(const Constant *V, ValueToValueMapTy &VM,
RemapFlags Flags = RF_None,
ValueMapTypeRemapper *TypeMapper = 0,
ValueMaterializer *Materializer = 0) {
return cast<Constant>(MapValue((const Value*)V, VM, Flags, TypeMapper,
Materializer));
}
} // End llvm namespace
#endif
|
