https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113084
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #3) > Oh __builtin_aarch64_get_lowv4sf is not lowered to BIT_FIELD_REF either > which it can be now. It is now, we get: _3 = {x_2(D), x_2(D)}; _5 = f (_3); _6 = BIT_FIELD_REF <_5, 64, 0>; return _6;