https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98532
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Target Milestone|--- |12.0 Status|NEW |RESOLVED --- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Fixed by enabling SLP at -O2. Though this could be improved without the SLP. _1 = BIT_FIELD_REF <*a_4(D), 64, 64>; _2 = BIT_FIELD_REF <*a_4(D), 64, 0>; tmp_5 = {_1, _2}; Could be turned into VEC_PERM<*a_4(D), {1, 0}> earlier on. But I doubt that it will matter so much really.