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Re: PATCH: optimize the following memcpy: sysdeps/i386/i686/multiarch/memcpy-ssse3.S
- From: Ulrich Drepper <drepper at gmail dot com>
- To: Dmitrieva Liubov <liubov dot dmitrieva at gmail dot com>
- Cc: libc-alpha at sourceware dot org
- Date: Thu, 22 Mar 2012 11:12:14 -0400
- Subject: Re: PATCH: optimize the following memcpy: sysdeps/i386/i686/multiarch/memcpy-ssse3.S
- References: <CAHjhQ93vUZ6jJ=efRtmVsc1akVNMbb5ephpzMp4NUzTh1yGn9g@mail.gmail.com>
On Thu, Mar 22, 2012 at 10:40, Dmitrieva Liubov
<liubov.dmitrieva@gmail.com> wrote:
> This gives from 6% - 50% performance boost on the atom machine, about
> 24,73% in geometric mean.
> Please, see the attached file for more details. A boost in % is shown there.
What about the big cores? Is it at least as good there or are the
additional instructions reducing performance?