https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104427
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- >Started between 20211114 and 20211121 : Started when __builtin_assoc_barrier support was added (r12-5368-gefb7c51024ccad9df2) so this is not a regression.