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

[Matt Arsenault via Phabricator via cfe-commits]

arsenm added a comment.

I don't really see the point of this and think it will just be an inconvenience to llvm developers.

Another use case we have for using these in a build system is for the builtin library shipped with the compiler


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  https://reviews.llvm.org/D55150/new/

https://reviews.llvm.org/D55150