[PATCH] D139717: Revert "[Driver] Remove Joined -X"

[Davide Italiano via Phabricator via cfe-commits]

davide added a comment.

In D139717#3984648 <https://reviews.llvm.org/D139717#3984648>, @lebedev.ri wrote:

> This is missing a test, like the original commit mentioned.
> Why can you not just use the the split variant, `-X clang ...`?

This breaks many projects internally. There's no real complexity to keep this around. Removing is more annoying than anything else. 
I agree on the test, that has to be added.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D139717/new/

https://reviews.llvm.org/D139717