https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64930
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Well, it does support it, but as an alias to acquire. Keeping the test FAILing is just wrong, and if the promotion of consume to acquire is going to be permanent or at least for a couple of years, xfail doesn't make sense either. We can say in comment that if consume is not promoted to acquire, the count would be different and how big of course, so if that is ever changed, the test can be adjusted again.
