https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102494
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> --- It seems x86 doesn't supports optab reduc_plus_scal_v8hi yet.
crazylht at gmail dot com via Gcc-bugs Sun, 26 Sep 2021 20:01:30 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102494
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> --- It seems x86 doesn't supports optab reduc_plus_scal_v8hi yet.