https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100934
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target| |x86_64-linux-gnu Status|UNCONFIRMED |NEW Summary|wrong code at -O3 on |[9/10/11/12 Regression] |x86_64-linux-gnu |wrong code at -O3 during | |unrolling Keywords| |wrong-code Last reconfirmed| |2021-06-06 Known to fail| |12.0 Ever confirmed|0 |1 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- The complete unroller is adding a __builtin_unreachable and then that becomes the only thing.