[PATCH] D72769: Replace CLANG_SPAWN_CC1 env var with a driver mode flag

[Sam McCall via Phabricator via cfe-commits]

sammccall added a comment.

Thanks for fixing this.

As I understand, the original patch made the new behaviour on-by-default and will make the release, so we want this flag on the release branch too, right?

(Happy to file a bug, just want to check first)


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D72769/new/

https://reviews.llvm.org/D72769