https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85078
--- Comment #6 from Jan Hubicka <hubicka at gcc dot gnu.org> --- The problem is that we build type inheritance graph earlier and at that time there are still virtual functions in the callgraph that are optimized out before free-lang-data. Their types however remain in ODR hash and thus are considered by devirtualization. I guess easiest fix is to simply rebuild ODR hash. We could also walk it and free lang data on them, but I think that would be just wasted effort. Honza
