I'd like to be a little more sure that I'm not totally messing things up before doing that, but yes, eventually, that would be a nice outcome.

I've also only really tested wazero. I can't know for sure that this is a straight improvement for other runtimes and architectures.

For instance, the code delays using wasm_i8x16_bitmask as much as possible, because on Aarch64 it can be slower than not using SIMD at all, whereas it's plenty fast on x86-64.

The maintainers of wasi-libc are some of the best people to review this, and I don’t think it would be wasting their time to ask them to look at a PR.