[PATCH] D55150: Emit warnings from the driver for use of -mllvm or -Xclang options.

[Eli Friedman via Phabricator via cfe-commits]

efriedma added a comment.

Or actually, if you really want to discourage people from using them, maybe we could use the LLVM version number in the name, like "--unstable-llvm-option-8" (which would change to "--unstable-llvm-option-9" in in 9.0, etc.).  This would allow developers to continue using the same workflows, but it would strongly discourage users from putting them into their build systems.

I don't think the argument that Swift or other users need Xclang options to hide them from users makes sense; stable workflows should use real driver flags.  If the flag names are clear that they aren't intended for general use, that should be good enough.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D55150/new/

https://reviews.llvm.org/D55150