https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108410
--- Comment #8 from Hongtao.liu <crazylht at gmail dot com> --- > Can x86 do this? We'd want to apply this to a scalar, so move ivtmp > to xmm, apply pack_usat or as you say below, the non-existing us_trunc > and then broadcast. I see, we don't have scalar version. Also vector instruction looks not very fast. https://uops.info/html-instr/VPMOVSDB_XMM_XMM.html
