https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91987
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> --- So, if clang is right here, we'd need to force arguments not just with is_gimple_reg_type, but also with all other types that are not TREE_ADDRESSABLE, into temporaries (perhaps with a first check we really need to do that, as in whether the other argument(s) has/have side-effects.