https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113025
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- So __m128i is a 16byte aligned type, you need to use __m128i_u if it is supported.