RISC-V RVV intrinsics are missing

[nazar-pc]

I think https://github.com/riscv-non-isa/rvv-intrinsic-doc is the place to get them, v1.0 was ratified on April 25 2025.
It would be really nice to get them into standard library now that RISC-V hardware becomes more common and there are various RISC-V-based VMs out there (for example in blockchain space).

[sayantn]

Doesn't RVV need scalable vectors (i.e. fixed length vectors whole length is not known until runtime)? Then it (and AArch64 SVE) is blocked on compiler support for scalable vectors

[nazar-pc]

Yes, I believe at least some of it might be blocked for the same reasons as SVE, but hopefully with rust-lang/rust-project-goals#270 it will be unblocked relatively soon

[sayantn]

Oh nice, I didn't know we had a project for SVE. With the amount of traction I am noticing on that I think we will soon have scalable vectors ❤️. Afaik RVV is not too different from SVE, so implementation of the intrinsics will most probably be quick