[PATCH] D66394: clang-cl: Enable /Zc:twoPhase by default if targeting MSVC 2017 update 3 or newer

[Reid Kleckner via Phabricator via cfe-commits]

rnk accepted this revision.
rnk added a comment.
This revision is now accepted and ready to land.

lgtm! I can't believe we didn't notice this for a year. Not long ago a Firefox developer filed a bug for a crash with `-fdelayed-template-parsing`, and if this works for them, we won't have to debug it. :)


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D66394/new/

https://reviews.llvm.org/D66394