https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110096
--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Peter Dimov from comment #7)
> These intrinsics are typically used in spinlocks as in
> ```
> while( flag_.test_and_set() )
> {
> // issue a power-saving NOP here
> }
> ```
> (where `flag_` is `std::atomic_flag`) and this use is generic and not
> target-dependent.
But yield is not the right thing for spinlocks for ARMv8. You want to use wfe
instead. yield is only for multi-threaded cores and can be used anytime.
