Reverting commit r185999 due to buildboot failure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186000 91177308-0d34-0410-b5e6-96231b3b80d8
Reverting commit r185999 due to buildboot failure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186001 91177308-0d34-0410-b5e6-96231b3b80d8