[PATCH] D43140: [Dominators] Always recalculate postdominators when update yields different roots

[Brian Rzycki via Phabricator via llvm-commits]

brzycki accepted this revision.
brzycki added a comment.

LGTM. Out of curiosity does this change impact compile time?


Repository:
  rL LLVM

https://reviews.llvm.org/D43140