[libc-commits] [libc] [libc][SVE] add sve handling for memcpy with count less than 32b (PR #167446)

[Guillaume Chatelet via libc-commits]

gchatelet wrote:

> I wonder if there is any update on this?

Yes, the patch seems promising but we need to run more experiments internally.
Several things I noticed:

- It is beneficial to have an early exit for `size == 0`, this prevents running through the two predicated loads/stores,
- It is also beneficial to have a path for `size <= 16` that uses a single predicated load / store.

I'll report back ASAP.

https://github.com/llvm/llvm-project/pull/167446