Shuxin Yang cfaa636a1d Revert r188188 and r188200.
In order to appease people (in Apple) who accuse me for committing "huge change" (?) without proper review. 

Thank Eric for fixing a compile-warning. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188204 91177308-0d34-0410-b5e6-96231b3b80d8
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