This is the mail archive of the
libc-ports@sources.redhat.com
mailing list for the libc-ports project.
Re: [PATCH v2] ARM: Add Cortex-A15 optimized NEON and VFP memcpy routines, with IFUNC.
- From: Richard Henderson <rth at twiddle dot net>
- To: Will Newton <will dot newton at linaro dot org>
- Cc: libc-ports at sourceware dot org, Patch Tracking <patches at linaro dot org>, Siddhesh Poyarekar <siddhesh dot poyarekar at gmail dot com>
- Date: Thu, 18 Apr 2013 09:42:07 +0200
- 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>
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~