[PATCH] D31919: NewGVN: Don't propagate over phi backedges where undef causes us to have >1 value.

[Davide Italiano via Phabricator via llvm-commits]

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

LGTM. I'd split the SCC finder and move maybe to a separate file (as we may want to use it somewhere else), but we can move it later, so.


https://reviews.llvm.org/D31919