+ // If the variable exists but has the wrong type, return a bitcast to the
+ // right type.
+ if (GV->getType() != PointerType::getUnqual(Ty))
+ return ConstantExpr::getBitCast(GV, PointerType::getUnqual(Ty));
+
+ // Otherwise, we just found the existing function or a prototype.
+ return GV;
+}
+
+//===----------------------------------------------------------------------===//
+// Methods for easy access to the global variables in the module.
+//
+
+// getNamedAlias - Look up the specified global in the module symbol table.
+// If it does not exist, return null.
+//
+GlobalAlias *Module::getNamedAlias(const StringRef &Name) const {
+ return dyn_cast_or_null<GlobalAlias>(getNamedValue(Name));
+}
+
+/// getNamedMetadata - Return the first NamedMDNode in the module with the
+/// specified name. This method returns null if a NamedMDNode with the
+//// specified name is not found.
+NamedMDNode *Module::getNamedMetadata(const StringRef &Name) const {
+ return dyn_cast_or_null<NamedMDNode>(getValueSymbolTable().lookup(Name));
+}
+
+/// getOrInsertNamedMetadata - Return the first named MDNode in the module
+/// with the specified name. This method returns a new NamedMDNode if a
+/// NamedMDNode with the specified name is not found.
+NamedMDNode *Module::getOrInsertNamedMetadata(const StringRef &Name) {
+ NamedMDNode *NMD =
+ dyn_cast_or_null<NamedMDNode>(getValueSymbolTable().lookup(Name));
+ if (!NMD)
+ NMD = NamedMDNode::Create(getContext(), Name, NULL, 0, this);
+ return NMD;
+}