Re: [RFC PATCH v2 1/4] tools/nolibc: x86-64: Use `rep movsb` for `memcpy()` and `memmove()`

[Ammar Faizi]

On 2023/09/02 午後7:29, Alviro Iskandar Setiawan wrote:
> On Sat, Sep 2, 2023 at 1:38 PM Ammar Faizi wrote:
> > Ok, I'll do that.
>
> Another micro-optimization. Since the likely case is the forward copy,
> make it the case that doesn't take the jump.
>
> Pseudo C:
> if (unlikely(dst - src < n))
>          backward_copy();
> else
>          forward_copy();

Point taken.

--
Ammar Faizi