This patch includes a conceptually simple, but very intrusive/pervasive change.
The idea is to segregate Objective-C "object" pointers from general C pointers (utilizing the recently added ObjCObjectPointerType). The fun starts in Sema::GetTypeForDeclarator(), where "SomeInterface *" is now represented by a single AST node (rather than a PointerType whose Pointee is an ObjCInterfaceType). Since a significant amount of code assumed ObjC object pointers where based on C pointers/structs, this patch is very tedious. It should also explain why it is hard to accomplish this in smaller, self-contained patches.
This patch does most of the "heavy lifting" related to moving from PointerType->ObjCObjectPointerType. It doesn't include all potential "cleanups". The good news is additional cleanups can be done later (some are noted in the code). This patch is so large that I didn't want to include any changes that are purely aesthetic.
By making the ObjC types truly built-in, they are much easier to work with (and require fewer "hacks"). For example, there is no need for ASTContext::isObjCIdStructType() or ASTContext::isObjCClassStructType()! We believe this change (and the follow-up cleanups) will pay dividends over time.
Given the amount of code change, I do expect some fallout from this change (though it does pass all of the clang tests). If you notice any problems, please let us know asap! Thanks.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75314 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/CheckObjCInstMethSignature.cpp b/lib/Analysis/CheckObjCInstMethSignature.cpp
index 2881486..c4e586d 100644
--- a/lib/Analysis/CheckObjCInstMethSignature.cpp
+++ b/lib/Analysis/CheckObjCInstMethSignature.cpp
@@ -30,8 +30,8 @@
// Right now don't compare the compatibility of pointers. That involves
// looking at subtyping relationships. FIXME: Future patch.
- if ((Derived->isPointerType() || Derived->isObjCQualifiedIdType()) &&
- (Ancestor->isPointerType() || Ancestor->isObjCQualifiedIdType()))
+ if ((Derived->isPointerType() || Derived->isObjCObjectPointerType()) &&
+ (Ancestor->isPointerType() || Ancestor->isObjCObjectPointerType()))
return true;
return C.typesAreCompatible(Derived, Ancestor);