Replace avx-512 with avx512f to match llvm side and what gcc patches appear to be using.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188860 91177308-0d34-0410-b5e6-96231b3b80d8
Revert accidental commit.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188861 91177308-0d34-0410-b5e6-96231b3b80d8
Revert accidental commit.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188862 91177308-0d34-0410-b5e6-96231b3b80d8
Issue fixits replacing invalid character literals with the equivalent \xNN
escape code.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188863 91177308-0d34-0410-b5e6-96231b3b80d8