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Date: Fri, 30 Aug 2013 17:14:00 -0000
From: "Carlos O'Donell" <carlos@redhat.com>
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To: Will Newton <will.newton@linaro.org>
CC: libc-ports@sourceware.org, Patch Tracking <patches@linaro.org>
Subject: Re: [PATCH] sysdeps/arm/armv7/multiarch/memcpy_impl.S: Improve performance.
References: <520894D5.7060207@linaro.org> <CANu=DmiBHoymFKTvaW_VsdhWZEYwkfViz1tTeRgj7H80f0FntA@mail.gmail.com>
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On 08/27/2013 03:46 AM, Will Newton wrote:
> On 12 August 2013 08:55, Will Newton <will.newton@linaro.org> wrote:
>>
>> A small change to the entry to the aligned copy loop improves
>> performance slightly on A9 and A15 cores for certain copies.
>>
>> ports/ChangeLog.arm:
>>
>> 2013-08-07  Will Newton  <will.newton@linaro.org>
>>
>>         * sysdeps/arm/armv7/multiarch/memcpy_impl.S: Tighten check
>>         on entry to aligned copy loop for improved performance.
>> ---
>>  ports/sysdeps/arm/armv7/multiarch/memcpy_impl.S | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> Ping?

How did you test the performance?

glibc has a performance microbenchmark, did you use that?

Cheers,
Carlos.