Re: [PATCH] eal/x86: optimize memcpy of small 64-byte blocks

[Stephen Hemminger]

On Tue,  4 Aug 2026 14:33:04 +0000
Morten Brørup <m...@smartsharesystems.com> wrote:

> +     /* Common way for small copy size of 64-byte blocks. Unlikely, so 
> constant size only */
> +     if (__rte_constant(n) && (n & 63) == 0 && n <= RTE_MEMCPY_BLOCK_64_MAX) 
> {
> +             void *ret = dst;
> +

Maybe just let compiler decide, it will generate vector instructions in most 
cases.

        if (__rte_constant(n))
                return mempcpy(dst, src, n);