[PATCH] D36177: [clang-diff] Add commandline arguments.

[Johannes Altmanninger via Phabricator via cfe-commits]

johannes added a comment.

In https://reviews.llvm.org/D36177#828909, @arphaman wrote:

> There should be a test that ensures that `stop-after` works and `extra-arg`s are correctly passed to the compiler.


`stop-after` is not tested yet. It is also broken in this patch, I will move it to a later patch, then it is easier to test.


https://reviews.llvm.org/D36177