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Re: [PATCH] Optimize MIPS memcpy
On 7/09/2012, at 4:25 AM, Steve Ellcey wrote:
> On Wed, 2012-09-05 at 12:43 +1200, Maxim Kuvyrkov wrote:
>
>> Your version looks quite good. If you could wrap it up into a glibc patch I would test it on our
>> setup to confirm that it indeed provides better performance.
>>
>> Thanks,
>>
>> --
>> Maxim Kuvyrkov
>> Mentor Graphics
>
> I have attached a glibc patch for my version of memcpy.
>
>
> 2012-09-06 Steve Ellcey <sellcey@mips.com>
>
> * sysdeps/mips/memcpy.S: Add prefetching and more unrolling, make
> it work in 32 or 64 bit modes.
> * sysdeps/mips/mips64/memcpy.S: Remove.
Thanks, I will benchmark it shortly.
Meanwhile, would you please test your memcpy implementation together with patch in http://sourceware.org/ml/libc-alpha/2012-09/msg00197.html to make sure your memcpy also can be used in memmove.
Thanks,
--
Maxim Kuvyrkov
CodeSourcery / Mentor Graphics