This reverts commit r333534 (i.e. reland r332720) after fixing module build. Differential Revision: https://reviews.llvm.org/D47068 llvm-svn: 333874
This reverts commit r333534 (i.e. reland r332720) after fixing module build. Differential Revision: https://reviews.llvm.org/D47068 llvm-svn: 333874