[Bug target/84522] GCC does not generate cmpxchg16b when mcx16 is used

[nruslan_devel at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84522

--- Comment #3 from Ruslan Nikolaev <nruslan_devel at yahoo dot com> ---
(In reply to Ruslan Nikolaev from comment #2)
> Yes, but not having atomic_load is far less an issue. Oftentimes, algorithms
> that use 128-bit can simply use compare_and_exchange only (at least for
> x86-64).

In other words, can atomic_load be redirected to libatomic while
compare_exchange still be generated directly (if -mcx16 is specified)?