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Re: [PATCH v2] ARM: Add Cortex-A15 optimized NEON and VFP memcpy routines, with IFUNC.
- From: Will Newton <will dot newton at linaro dot org>
- To: Siddhesh Poyarekar <siddhesh dot poyarekar at gmail dot com>
- Cc: Richard Henderson <rth at twiddle dot net>, libc-ports at sourceware dot org, Patch Tracking <patches at linaro dot org>
- Date: Thu, 18 Apr 2013 09:37:57 +0100
- Subject: Re: [PATCH v2] ARM: Add Cortex-A15 optimized NEON and VFP memcpy routines, with IFUNC.
- References: <516D18F0 dot 4060009 at linaro dot org> <516EC27E dot 8080502 at twiddle dot net> <CANu=DmgZjMZdijjjsxnECU9CMJmNkUqTbYctp+WA_VxmTN=O-A at mail dot gmail dot com> <516FA3CF dot 8080200 at twiddle dot net> <CAAHN_R0cE3LQVH9iEENaS=6Zq2U2E1Fa6SkUyQGYd-z0w7Ki_Q at mail dot gmail dot com> <CANu=DmjTT6ydMcvqWZ=M5ckQE9Riqt0k+BCRSrR6hFrkLB0TOA at mail dot gmail dot com> <CAAHN_R1DWZ7tat4kyouUa+v4DVYCSHQ44FAe6c75_JgfhQNnRA at mail dot gmail dot com>
On 18 April 2013 09:25, Siddhesh Poyarekar <siddhesh.poyarekar@gmail.com> wrote:
> On 18 April 2013 13:24, Will Newton <will.newton@linaro.org> wrote:
>> Thanks for the offer, I don't have any armv6 hardware to test with.
>> The easiest way to test is probably using the cortex-strings package
>> (as the patch I posted is for armv7).
>>
>> https://launchpad.net/cortex-strings
>>
>> "try-this -t memcpy" will benchmark the code I submitted, "try-glibc
>> -t memcpy" will benchmark the current glibc code.
>
> OK, I'll try to do this tonight (i.e. ~8 hours from now) since the
> board is at home and I'm not. I assume you want 'current glibc code'
> to be master? The distribution version is 2.17 IIRC or at worst 2.16.
The cortex-strings package has its own copy of the glibc memcpy in the
reference sub-directory. I believe "try-none" will benchmark against
the C library installed.
--
Will Newton
Toolchain Working Group, Linaro