https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115889
--- Comment #7 from Levy Hsu <admin at levyhsu dot com> --- It appears that vect-partial-vector-usage=2 causes short int type V32HI falls into vpermt2_sepcial_bf16_shuffle_<mode> while the original one was intended for bf16, will investigate.