The closest thing I know of, is that there was a concurrent queue algo called LCRQ It originally required double-width CAS, but IIRC in recent years someone fi

The closest thing I know of, is that there was a concurrent queue algo called LCRQ It originally required double-width CAS, but IIRC in recent years someone figured out how to remove this to make it more portable Best reference I could find from cursory google: https://ppopp23.sigplan.org/details/PPoPP-2023-papers/2/The-State-of-the-Art-LCRQ-Concurrent-Queue-Algorithm-Does-NOT-Require-CAS2?utm_source=chatgpt.com https://ppopp23.sigplan.org/details/PPoPP-2023-papers/2/The-...