[PATCH] ntdll: Optimize memcpy for x86-64.

Alexandre Julliard julliard at winehq.org
Sat Apr 2 04:47:03 CDT 2022


Elaine Lefler <elaineclefler at gmail.com> writes:

> If upstream typically doesn't like this kind of patch, maybe I should
> resubmit after I've developed an AVX2 patch as well? That would
> provide a much more convincing argument for speed, compared to the
> current patch which is fairly marginal.

Note that to make a convincing speed argument, you need to show a
measurable improvement for a real world app. That's especially true for
these ntdll functions, since apps are expected to mostly use the msvcrt
variants instead.

-- 
Alexandre Julliard
julliard at winehq.org



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