https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83487
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> --- I certainly didn't mean this kind of change, after all, it will also break testing on what the alignof of the type is etc. What I meant is in calls.c, when considering alignment of arguments ignore it for TYPE_EMPTY_P.
