class GlobalAlias : public GlobalValue, public ilist_node<GlobalAlias> {
friend class SymbolTableListTraits<GlobalAlias, Module>;
- void operator=(const GlobalAlias &) LLVM_DELETED_FUNCTION;
- GlobalAlias(const GlobalAlias &) LLVM_DELETED_FUNCTION;
+ void operator=(const GlobalAlias &) = delete;
+ GlobalAlias(const GlobalAlias &) = delete;
void setParent(Module *parent);
+ GlobalAlias(Type *Ty, unsigned AddressSpace, LinkageTypes Linkage,
+ const Twine &Name, Constant *Aliasee, 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);
+
+ /// If a parent module is specified, the alias is automatically inserted into
+ /// the end of the specified module's alias list.
+ static GlobalAlias *create(Type *Ty, unsigned AddressSpace,
+ LinkageTypes Linkage, const Twine &Name,
+ Constant *Aliasee, Module *Parent);
+
+ // Without the Aliasee.
+ static GlobalAlias *create(Type *Ty, unsigned AddressSpace,
+ LinkageTypes Linkage, const Twine &Name,
+ Module *Parent);
+
+ // The module is taken from the Aliasee.
+ static GlobalAlias *create(Type *Ty, unsigned AddressSpace,
+ LinkageTypes Linkage, const Twine &Name,
+ GlobalValue *Aliasee);
+
+ // Type, Parent and AddressSpace taken from the Aliasee.
+ static GlobalAlias *create(LinkageTypes Linkage, const Twine &Name,
+ GlobalValue *Aliasee);
+
+ // Linkage, Type, Parent and AddressSpace taken from the Aliasee.
+ static GlobalAlias *create(const Twine &Name, GlobalValue *Aliasee);
/// 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();
+ void removeFromParent() override;
/// eraseFromParent - This method unlinks 'this' from the containing module
/// and deletes it.
///
- virtual void eraseFromParent();
+ void eraseFromParent() override;
- /// set/getAliasee - These methods retrive and set alias target.
- void setAliasee(Constant *GV);
+ /// These methods retrive and set alias target.
+ void setAliasee(Constant *Aliasee);
const Constant *getAliasee() const {
- return getOperand(0);
+ return const_cast<GlobalAlias *>(this)->getAliasee();
}
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;
+
+ const GlobalObject *getBaseObject() const {
+ return const_cast<GlobalAlias *>(this)->getBaseObject();
+ }
+ GlobalObject *getBaseObject() {
+ return dyn_cast<GlobalObject>(getAliasee()->stripInBoundsOffsets());
+ }
+
+ const GlobalObject *getBaseObject(const DataLayout &DL, APInt &Offset) const {
+ return const_cast<GlobalAlias *>(this)->getBaseObject(DL, Offset);
+ }
+ GlobalObject *getBaseObject(const DataLayout &DL, APInt &Offset) {
+ return dyn_cast<GlobalObject>(
+ getAliasee()->stripAndAccumulateInBoundsConstantOffsets(DL, Offset));
+ }
+
+ static bool isValidLinkage(LinkageTypes L) {
+ return isExternalLinkage(L) || isLocalLinkage(L) ||
+ isWeakLinkage(L) || isLinkOnceLinkage(L);
+ }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const Value *V) {