https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102152
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jeffreyalaw at gmail dot com --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (gdb) p debug_gimple_stmt(op_p.loc.stmt) if (0 != 0) Optimizing statement if (next_mask_61 != { 0, ... }) Reducing vector comparison: if (next_mask_61 != { 0, ... }) To scalar equivalent: if (0 != 0) So r12-3190 caused it.