[PATCH] x86_32: memcpy, mempcpy, memmove, memcpy_chk, mempcpy_chk, memmove_chk optimized with SSE2 unaligned loads/stores

[Allan McRae]

On 05/07/14 03:11, Andrew Senkevich wrote:
> Hi,
> 
> this new functions based on new memcpy which is 32bit analogue of
> x86_64 sse2 unaligned memcpy version.
> Benchmarked on Silvermont, Haswell, Ivy Bridge, Sandy Bridge and
> Westmere, performance results attached.
> Testsuite was run on x86_64 with no new regressions.
> 

Am I missing something?  Why test on x86_64?

> Change log:
> 
> 2014-07-04  Andrew Senkevich  <andrew.n.senkevich@gmail.com>
> 
>         * sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S: New file,
>         contains implementation optimized with sse2 unaligned loads/stores.
>         * sysdeps/i386/i686/multiarch/memmove-sse2-unaligned.S: Likewise.
>         * sysdeps/i386/i686/multiarch/mempcpy-sse2-unaligned.S: Likewise.
>         * sysdeps/i386/i686/multiarch/memcpy.S: Selection of new function if
>         bit_Fast_Unaligned_Load is set.
>         * sysdeps/i386/i686/multiarch/memcpy_chk.S: Likewise.
>         * sysdeps/i386/i686/multiarch/memmove.S: Likewise.
>         * sysdeps/i386/i686/multiarch/memmove_chk.S: Likewise.
>         * sysdeps/i386/i686/multiarch/mempcpy.S: Likewise.
>         * sysdeps/i386/i686/multiarch/mempcpy_chk.S: Likewise.
>         * sysdeps/i386/i686/multiarch/Makefile: Added new files to build.
>         * sysdeps/i386/i686/multiarch/ifunc-impl-list.c
> (__libc_ifunc_impl_list):
>         Added testing of new functions.
>