https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63671
--- Comment #21 from Jan Hubicka <hubicka at gcc dot gnu.org> --- My CPU is AMD Opteron(TM) Processor 6272 and 5.0 doesn't beat 4.9 generic even with -fmarch=native (the time is 2.9 wrt 2.7). May be some tuning issue?
