On my machine, the patchset that you pushed to try makes [`shallowEqual`](https://github.com/mozilla/Speedometer/blob/9c41c606c4aa7b3a81cec480c7473b153a4248b6/resources/todomvc/architecture-examples/react-redux/dist/app.bundle.js#L2051-L2059) faster by 11%. ([1716](https://share.firefox.dev/3PnskNj) -> [1529](https://share.firefox.dev/46cav9Y) samples). Safari only spends [500 samples](https://share.firefox.dev/3p2wVtx) in this function.
Bug 1836679 Comment 12 Edit History
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On my machine, the patchset that you pushed to try makes [`shallowEqual`](https://github.com/mozilla/Speedometer/blob/9c41c606c4aa7b3a81cec480c7473b153a4248b6/resources/todomvc/architecture-examples/react-redux/dist/app.bundle.js#L2051-L2059) faster by 11%. ([1716](https://share.firefox.dev/3PnskNj) -> [1529](https://share.firefox.dev/46cav9Y) samples), for an overall improvement of the TodoMVC-React-Redux subtest by 0.6%. Safari only spends [500 samples](https://share.firefox.dev/3p2wVtx) in this function. Matching Safari's speed would improve the subtest by 3.8%.