Dead emit dead store warnings when assigning nil to an ObjC object
pointer (for defensive programming).  This matches the behavior with
assigning NULL to a regular pointer.  Fixes <rdar://problem/7631278>.

llvm-svn: 96985
2 files changed
tree: b16af246947a3a067396b3bfa8a5763db1f0bbcf
  1. clang/
  2. compiler-rt/
  3. llvm/