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
|
//===-------- llvm/GlobalAlias.h - GlobalAlias class ------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the declaration of the GlobalAlias class, which
// represents a single function or variable alias in the IR.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_GLOBAL_ALIAS_H
#define LLVM_GLOBAL_ALIAS_H
#include "llvm/GlobalValue.h"
#include "llvm/OperandTraits.h"
#include "llvm/ADT/ilist_node.h"
#include "llvm/ADT/Twine.h"
namespace llvm {
class Module;
template<typename ValueSubClass, typename ItemParentClass>
class SymbolTableListTraits;
class GlobalAlias : public GlobalValue, public ilist_node<GlobalAlias> {
friend class SymbolTableListTraits<GlobalAlias, Module>;
void operator=(const GlobalAlias &); // Do not implement
GlobalAlias(const GlobalAlias &); // Do not implement
void setParent(Module *parent);
public:
// allocate space for exactly one operand
void *operator new(size_t s) {
return User::operator new(s, 1);
}
/// GlobalAlias ctor - If a parent module is specified, the alias is
/// automatically inserted into the end of the specified module's alias list.
GlobalAlias(Type *Ty, LinkageTypes Linkage, const Twine &Name = "",
Constant* Aliasee = 0, Module *Parent = 0);
/// Provide fast operand accessors
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant);
/// removeFromParent - This method unlinks 'this' from the containing module,
/// but does not delete it.
///
virtual void removeFromParent();
/// eraseFromParent - This method unlinks 'this' from the containing module
/// and deletes it.
///
virtual void eraseFromParent();
/// set/getAliasee - These methods retrive and set alias target.
void setAliasee(Constant *GV);
const Constant *getAliasee() const {
return getOperand(0);
}
Constant *getAliasee() {
return getOperand(0);
}
/// getAliasedGlobal() - Aliasee can be either global or bitcast of
/// global. This method retrives the global for both aliasee flavours.
const GlobalValue *getAliasedGlobal() const;
/// resolveAliasedGlobal() - This method tries to ultimately resolve the alias
/// by going through the aliasing chain and trying to find the very last
/// global. Returns NULL if a cycle was found. If stopOnWeak is false, then
/// the whole chain aliasing chain is traversed, otherwise - only strong
/// aliases.
const GlobalValue *resolveAliasedGlobal(bool stopOnWeak = true) const;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const GlobalAlias *) { return true; }
static inline bool classof(const Value *V) {
return V->getValueID() == Value::GlobalAliasVal;
}
};
template <>
struct OperandTraits<GlobalAlias> :
public FixedNumOperandTraits<GlobalAlias, 1> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GlobalAlias, Constant)
} // End llvm namespace
#endif
|
