[PATCH] D155417: [DominanceFrontier] fix addToFrontier to use insert

[Matt Arsenault via Phabricator via llvm-commits]

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

I guess if it's only downstream users we just have to trust it. It is suspicious that an "addTo" function was doing an erase


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D155417/new/

https://reviews.llvm.org/D155417