//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Anton Korobeynikov and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#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;
class Constant;
-class PointerType;
template<typename ValueSubClass, typename ItemParentClass>
class SymbolTableListTraits;
-class GlobalAlias : public GlobalValue {
+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);
- GlobalAlias *Prev, *Next;
- void setNext(GlobalAlias *N) { Next = N; }
- void setPrev(GlobalAlias *N) { Prev = N; }
-
- // getNext/Prev - Return the next or previous alias in the list.
- GlobalAlias *getNext() { return Next; }
- const GlobalAlias *getNext() const { return Next; }
- GlobalAlias *getPrev() { return Prev; }
- const GlobalAlias *getPrev() const { return Prev; }
-
- Use Aliasee;
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(const Type *Ty, LinkageTypes Linkage, const std::string &Name = "",
+ GlobalAlias(const Type *Ty, LinkageTypes Linkage, const Twine &Name = "",
Constant* Aliasee = 0, Module *Parent = 0);
+ /// Provide fast operand accessors
+ DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
+
/// isDeclaration - Is this global variable lacking an initializer? If so,
/// the global variable is defined in some other translation unit, and is thus
/// only a declaration here.
/// removeFromParent - This method unlinks 'this' from the containing module,
/// but does not delete it.
///
- void removeFromParent();
+ virtual void removeFromParent();
/// eraseFromParent - This method unlinks 'this' from the containing module
/// and deletes it.
///
- void eraseFromParent();
-
- virtual void print(std::ostream &OS) const;
- void print(std::ostream *OS) const { if (OS) print(*OS); }
+ virtual void eraseFromParent();
/// set/getAliasee - These methods retrive and set alias target.
void setAliasee(Constant* GV);
/// 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) {
}
};
+template <>
+struct OperandTraits<GlobalAlias> : public FixedNumOperandTraits<1> {
+};
+
+DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GlobalAlias, Value)
+
} // End llvm namespace
#endif