Summary: Related llvm patch: https://reviews.llvm.org/D27359

Reviewers: echristo, t.p.northover, rengolin, grosbach, compnerd

Subscribers: mehdi_amini, cfe-commits, llvm-commits

Tags: #clang-c

Differential Revision: https://reviews.llvm.org/D27360

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@288762 91177308-0d34-0410-b5e6-96231b3b80d8