Driver: Forward -Wp, and -Xpreprocessor arguments to clang when using
the preprocessor.
 - PR3602.

 - As is inherent in the blanket forwarding options, this will only
   work if clang-cc happens to accept what the user passed. Users by
   and large should use driver options to interact with the
   preprocessor, if at all possible.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68144 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed