clang -cc1: Kill off -empty-input only, and replace with -init-only which is an
actual action.
 - This is easier to use, and more reliable for timing the thing this was
   actually meant to be useful for.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98978 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed