https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90889
--- Comment #10 from Martin Jambor <jamborm at gcc dot gnu.org> --- OK, this is new: The problem is that topological ordering on which IPA-CP operates is bogus, reverting Martin's r272115 restored Ada LTO bootstrap for me. I however tried breakpointing in IPA-CP's ignore_edge at the one edge I assumed would be problematic and it did not return true, so I have to look a bit further.
