[arcmt] At an unbridged cast error, if we're returning a load-of-ivar from a +0 method,
automatically insert a __bridge cast.

radar://11560638

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158127 91177308-0d34-0410-b5e6-96231b3b80d8
8 files changed