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shash · 2026-08-30T16:22:43.000Z

It’s not like GC isn’t a massive part of RVA23 - those are the basic instructions that handle 80-90% of all uses (including most of what CPython needs).

I’m sure one could do some optimizations on RVA23, but is it really worth it?

hajile · 2026-08-30T20:57:33.000Z

Vectors are pretty big for speeding up stuff like string comparisons.

Bit manipulation offers up to almost 10% advantage.

Zicond allows branchless code which represents significant speedups.

There’s also serious gains to be had from crypto support.

I’d guess the rest aren’t as important to Python, but those are quite important.

LeFantome · 2026-08-30T18:44:51.000Z

Vector extensions are the biggest gap. That is going to make a pretty big difference for some stuff.