Allow front-end 'isa' access on object's of type 'id'.
Enhance test case to cover 'isa' access on interface types (clang produces an error, GCC produces a warning).

Still need back-end CodeGen for ObjCIsaExpr.

llvm-svn: 76979
11 files changed
tree: 12fb50f1667d355a18447492ad72abc7ac52650e
  1. clang/
  2. compiler-rt/
  3. llvm/