My daily driver is a M2 Mac, and we added the same set of optimisations to ARM on Mac as we did to ARM Windows (at the same time as Intel Windows we measured emulation of in this blog.) More info: https://blogs.remobjects.com/2026/01/26/fast-math-in-six-lan...

We did not try to especially optimise Intel Mac, but it's very tempting to do so in order to look at it as you ask.

I wish Rosetta was open sourced too. Same with Prism. I think any and all translation tech could only benefit everyone.

Well, Prism is likely to be with us for a decade, if not more, since Microsoft actually cares about backwards compatibility, whereas Apple much less so, and I guess, to them, we're at a "good enough" state. So Microsoft releasing it is less likely, but Apple could, especially after it is done. But I suspect some asshole sees a "competitive advantage" somewhere, and won't sign off a source release. What a gut punch for the team that worked on it.

Looking forward to a future look at Rosetta 2. Thanks!