From: Richard Henderson <rth@twiddle.net>
To: Will Newton <will.newton@linaro.org>
Cc: libc-ports@sourceware.org, Patch Tracking <patches@linaro.org>,
Siddhesh Poyarekar <siddhesh.poyarekar@gmail.com>
Subject: Re: [PATCH v2] ARM: Add Cortex-A15 optimized NEON and VFP memcpy routines, with IFUNC.
Date: Thu, 18 Apr 2013 07:42:00 -0000 [thread overview]
Message-ID: <516FA3CF.8080200@twiddle.net> (raw)
In-Reply-To: <CANu=DmgZjMZdijjjsxnECU9CMJmNkUqTbYctp+WA_VxmTN=O-A@mail.gmail.com>
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?
r~
next prev parent reply other threads:[~2013-04-18 7:42 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-16 9:25 Will Newton
2013-04-17 15:40 ` Richard Henderson
2013-04-17 15:53 ` Will Newton
2013-04-18 7:42 ` Richard Henderson [this message]
2013-04-18 7:47 ` Siddhesh Poyarekar
2013-04-18 7:54 ` Will Newton
2013-04-18 8:26 ` Siddhesh Poyarekar
2013-04-18 8:38 ` Will Newton
2013-04-18 17:58 ` Siddhesh Poyarekar
2013-04-22 8:27 ` Will Newton
2013-04-17 17:51 ` Carlos O'Donell
2013-04-18 8:01 ` Will Newton
2013-04-19 21:47 ` Joseph S. Myers
2013-04-22 8:32 ` Will Newton
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