#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(Type *Ty, LinkageTypes Linkage, const Twine &Name = "",
Constant* Aliasee = 0, Module *Parent = 0);
- /// 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.
- virtual bool isDeclaration() const;
+ /// Provide fast operand accessors
+ DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant);
/// 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);
- const Constant* getAliasee() const {
- return cast_or_null<Constant>(getOperand(0));
+ void setAliasee(Constant *GV);
+ const Constant *getAliasee() const {
+ return getOperand(0);
}
- Constant* getAliasee() {
- return cast_or_null<Constant>(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;
+ const GlobalValue *getAliasedGlobal() const;
- /// resolveAliasedGlobal() - This method tries to ultimately resolve alias by
- /// going through aliasing chain and trying to find the very last
- /// global. Return NULL is cycle was found.
- const GlobalValue* resolveAliasedGlobal() 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; }
}
};
+template <>
+struct OperandTraits<GlobalAlias> :
+ public FixedNumOperandTraits<GlobalAlias, 1> {
+};
+
+DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GlobalAlias, Constant)
+
} // End llvm namespace
#endif