+ | OptGlobalAssign GVVisibilityStyle ALIAS AliasLinkage AliaseeRef {
+ std::string Name;
+ if ($1) {
+ Name = *$1;
+ delete $1;
+ }
+ if (Name.empty())
+ GEN_ERROR("Alias name cannot be empty");
+
+ Constant* Aliasee = $5;
+ if (Aliasee == 0)
+ GEN_ERROR(std::string("Invalid aliasee for alias: ") + Name);
+
+ GlobalAlias* GA = new GlobalAlias(Aliasee->getType(), $4, Name, Aliasee,
+ CurModule.CurrentModule);
+ GA->setVisibility($2);
+ InsertValue(GA, CurModule.Values);
+
+
+ // If there was a forward reference of this alias, resolve it now.
+
+ ValID ID;
+ if (!Name.empty())
+ ID = ValID::createGlobalName(Name);
+ else
+ ID = ValID::createGlobalID(CurModule.Values.size()-1);
+
+ if (GlobalValue *FWGV =
+ CurModule.GetForwardRefForGlobal(GA->getType(), ID)) {
+ // Replace uses of the fwdref with the actual alias.
+ FWGV->replaceAllUsesWith(GA);
+ if (GlobalVariable *GV = dyn_cast<GlobalVariable>(FWGV))
+ GV->eraseFromParent();
+ else
+ cast<Function>(FWGV)->eraseFromParent();
+ }
+ ID.destroy();
+
+ CHECK_FOR_ERROR
+ }