https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64255
--- Comment #10 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #9) > (In reply to Marek Polacek from comment #7) > > -fno-if-conversion seems to help. > > Then this is most likely a Dup of another bug which has a few version of a > patch posted now. PR63917?