Missed a ! in the if statement when these were being set and the options
are inverted in clang and llvm.

I'll attempt to get a testcase for this that doesn't involve compiling to .s,
but it's unlikely.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@209017 91177308-0d34-0410-b5e6-96231b3b80d8