Add support for the weakref attribute. We still produce "alias weak" as llvm-gcc does, but are more strict on what uses of weakref we accept.

llvm-svn: 96992
11 files changed
tree: 4c606aba2e46f52a72a2f788afcf34efc3816880
  1. clang/
  2. compiler-rt/
  3. llvm/