https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81491
--- Comment #2 from Jan Hubicka <hubicka at ucw dot cz> --- Hmm, I will take a look. The test is not really testing the right thing at first place. We should not look for dominance relationship, but whether BB is reachable over path that does not enter cold partition. I does not make sense to return back to hot in such scenarios... Honza