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Re: [PATCH v2] ARM: Add Cortex-A15 optimized NEON and VFP memcpy routines, with IFUNC.
- From: Siddhesh Poyarekar <siddhesh dot poyarekar at gmail dot com>
- To: Richard Henderson <rth at twiddle dot net>
- Cc: Will Newton <will dot newton at linaro dot org>, libc-ports at sourceware dot org, Patch Tracking <patches at linaro dot org>
- Date: Thu, 18 Apr 2013 13:17:48 +0530
- 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>
On 18 April 2013 13:12, Richard Henderson <rth@twiddle.net> wrote:
> On 2013-04-17 17:53, Will Newton wrote:
>>>
>>> From reading the comments of the code v7 is required for NEON, v6 is
>>
>> required for VFP and unaligned access is required. The unaligned
>> access requirement may be a problem on v5 I'm not sure. NB: I did not
>> write the memcpy code so I have not looked at it in great detail.
>
>
> Neon won't exist before v7, true. But then it ought not be advertized
> by the hwcap either, so it won't be selected.
>
> Anyone got a raspberry pi to benchmark the current and the new here?
I can do the benchmark on my raspberry pi.
Siddhesh
--
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