https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88464
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- We have: else if (memory_access_type == VMAT_GATHER_SCATTER && gs_info.decl) { tree arglist = TYPE_ARG_TYPES (TREE_TYPE (gs_info.decl)); tree masktype = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (arglist)))); if (TREE_CODE (masktype) == INTEGER_TYPE) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, "masked gather with integer mask not" " supported."); return false; } } and no support for masked scatter stores when not using the aarch64 style ifns.