Implement the ObjC pseudo built-in types as clang "BuiltinType's". I say pseudo built-in types, since Sema still injects a typedef for recognition (i.e. they aren't truly built-ins from a parser perspective).

This removes the static data/methods on ObjCObjectPointerType while preserving the nice API (no need to fiddle with ASTContext:-).

This patch also adds Type::isObjCBuiltinType().

This should be the last fairly large patch related to recrafting the ObjC type system. The follow-on patches should be fairly small.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75808 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaOverload.cpp b/lib/Sema/SemaOverload.cpp
index bee3936..35c5567 100644
--- a/lib/Sema/SemaOverload.cpp
+++ b/lib/Sema/SemaOverload.cpp
@@ -1011,15 +1011,9 @@
     FromType->getAsObjCObjectPointerType();
 
   if (ToObjCPtr && FromObjCPtr) {
-    // Objective C++: We're able to convert between "id" and a pointer
-    // to any interface (in both directions).
-    if (ToObjCPtr->isObjCIdType() && FromObjCPtr->isObjCIdType()) {
-      ConvertedType = ToType;
-      return true;
-    }
-    // Objective C++: Allow conversions between the Objective-C "Class" and a
+    // Objective C++: We're able to convert between "id" or "Class" and a
     // pointer to any interface (in both directions).
-    if (ToObjCPtr->isObjCClassType() || FromObjCPtr->isObjCClassType()) {
+    if (ToObjCPtr->isObjCBuiltinType() && FromObjCPtr->isObjCBuiltinType()) {
       ConvertedType = ToType;
       return true;
     }
@@ -1169,8 +1163,7 @@
       // Objective-C++ conversions are always okay.
       // FIXME: We should have a different class of conversions for the
       // Objective-C++ implicit conversions.
-      if (FromPtrType->isObjCIdType() || ToPtrType->isObjCIdType() ||
-          FromPtrType->isObjCClassType() || ToPtrType->isObjCClassType())
+      if (FromPtrType->isObjCBuiltinType() || ToPtrType->isObjCBuiltinType())
         return false;
 
   }