[PATCH] D42978: Make march/target-cpu print a note with the list of valid values

[Florian Hahn via Phabricator via cfe-commits]

fhahn added a comment.

Also with tests for each backend, this diff will get quite big. As this is opt-in, it might make sense to enable backends separately.


Repository:
  rC Clang

https://reviews.llvm.org/D42978