Rephrase the preprocessor test to directly use CC1 and not bother
testing any of the strange driver behavior. We already have some tiny
tests for the driver behavior, and I'm going to expand them greatly in
the next commit.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154290 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed