https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64481
--- Comment #4 from Jan Hubicka <hubicka at gcc dot gnu.org> --- The comment is no longer valid, because no updates are made inside of the ifdef block. What probably happens is that the edge growth cache is not up to date but the problem is not noticed by the sanity check. I fixed some of cache updates recently, does it solve the problem?