https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96755
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> --- Sorry for TYPO --- (define_split [(set (match_operand:DI 0 "mask_reg_operand") (zero_extend:DI - (not:DI (match_operand:SI 1 "mask_reg_operand"))))] + (not:SI (match_operand:SI 1 "mask_reg_operand"))))] "TARGET_AVX512BW && reload_completed" ---