[PATCH] [FileCheck] Fix a bug that cause FileCheck to misidentify check-prefix

[Tim Northover]

  I think fixing the tests would be the best option. The FileCheck documentation doesn't sanction that kind of use (though it is a bit vague), so the tests are buggy. You should probably make your changes to the RUN line rather than each CHECK-XXX line though, where possible.

  Best to minimise the impact of these sweeping changes.

  Cheers.

  Tim.

http://llvm-reviews.chandlerc.com/D1271