================
@@ -415,11 +417,87 @@ bool CGObjCRuntime::canMessageReceiverBeNull(
bool CGObjCRuntime::canClassObjectBeUnrealized(
const ObjCInterfaceDecl *CalleeClassDecl, CodeGenFunction &CGF) const {
- // TODO
+ if (!CalleeClassDecl || isWeakLinkedClass(CalleeClassDecl))
+ return true;
+
+ // Heuristic 1: +load method on this class or any subclass
+ // If the class or any of its subclasses has a +load method, it's realized
+ // when the binary is loaded. We cache this information to avoid repeatedly
+ // scanning the translation unit.
+ if (getOrPopulateRealizedClasses().contains(CalleeClassDecl))
+ return false;
+
+ // Heuristic 2: using Self / Super
+ // If we're currently executing a method of ClassDecl (or a subclass),
----------------
ojhunt wrote:
Maybe "If we're inside the body of method declared on CalleeClassDecl or a
subclass, CalleeClassDecl must have been realized"?
https://github.com/llvm/llvm-project/pull/170619
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