[PATCH] D52674: [AST] Add Obj-C discriminator to MS ABI RTTI

[Shoaib Meenai via Phabricator via cfe-commits]

smeenai added a comment.

In https://reviews.llvm.org/D52674#1251419, @rjmccall wrote:

> Conceptually this seems fine, but I think it would be good to stop and make sure we're using a consistent style when mangling extensions.  Currently it feels like every patch to add a Clang extension to the Microsoft mangling ends up inventing its own rules and crossing its fingers.


That's a fair concern.

I believe most of the Obj-C extensions have been handled by @compnerd, and he's been following a pretty consistent scheme using the `__Objc` namespace, e.g. `void f(id<P>) {}` is mangled as `void __cdecl f(struct objc_object<struct __ObjC::Protocol<struct P> > *)`. I could certainly try to implement something similar here, except as I mentioned, I'm pretty sure it would require maintaining some state in the demangler for indicating whether we were mangling for RTTI.


Repository:
  rC Clang

https://reviews.llvm.org/D52674