Substantially alter the design of the Objective C type AST by introducing

ObjCObjectType, which is basically just a pair of
  one of {primitive-id, primitive-Class, user-defined @class}
with
  a list of protocols.
An ObjCObjectPointerType is therefore just a pointer which always points to
one of these types (possibly sugared).  ObjCInterfaceType is now just a kind
of ObjCObjectType which happens to not carry any protocols.

Alter a rather large number of use sites to use ObjCObjectType instead of
ObjCInterfaceType.  Store an ObjCInterfaceType as a pointer on the decl rather
than hashing them in a FoldingSet.  Remove some number of methods that are no
longer used, at least after this patch.

By simplifying ObjCObjectPointerType, we are now able to easily remove and apply
pointers to Objective-C types, which is crucial for a certain kind of ObjC++
metaprogramming common in WebKit.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103870 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/CodeGen/Mangle.cpp b/lib/CodeGen/Mangle.cpp
index 10313980ca..84453b3306 100644
--- a/lib/CodeGen/Mangle.cpp
+++ b/lib/CodeGen/Mangle.cpp
@@ -1206,6 +1206,12 @@ void CXXNameMangler::mangleType(const ObjCInterfaceType *T) {
   mangleSourceName(T->getDecl()->getIdentifier());
 }
 
+void CXXNameMangler::mangleType(const ObjCObjectType *T) {
+  // FIXME: do we allow overloading by different protocols?
+  // If so, we need to mangle them in here.
+  mangleType(T->getBaseType());
+}
+
 void CXXNameMangler::mangleType(const BlockPointerType *T) {
   Out << "U13block_pointer";
   mangleType(T->getPointeeType());