In https://bugzilla.mozilla.org/show_bug.cgi?id=1752287 (probably just read comment 26 on), I was arguing with someone that hoisting a typed array read out of a loop containing Atomics.pause() is valid:

    while (view[i] === 0) { Atomics.pause(); }

->

    x = view[i]; while (x === 0) { Atomics.pause(); }