From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17497 invoked by alias); 18 Apr 2013 07:47:51 -0000 Mailing-List: contact libc-ports-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: libc-ports-owner@sourceware.org Received: (qmail 17487 invoked by uid 89); 18 Apr 2013 07:47:51 -0000 X-Spam-SWARE-Status: No, score=-5.5 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,KHOP_RCVD_TRUST,KHOP_THREADED,RCVD_IN_DNSWL_LOW,RCVD_IN_HOSTKARMA_YE,TW_CP,TW_HW autolearn=ham version=3.3.1 Received: from mail-wi0-f169.google.com (HELO mail-wi0-f169.google.com) (209.85.212.169) by sourceware.org (qpsmtpd/0.84/v0.84-167-ge50287c) with ESMTP; Thu, 18 Apr 2013 07:47:50 +0000 Received: by mail-wi0-f169.google.com with SMTP id h11so1496115wiv.2 for ; Thu, 18 Apr 2013 00:47:48 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.194.122.7 with SMTP id lo7mr16413396wjb.48.1366271268730; Thu, 18 Apr 2013 00:47:48 -0700 (PDT) Received: by 10.194.57.202 with HTTP; Thu, 18 Apr 2013 00:47:48 -0700 (PDT) In-Reply-To: <516FA3CF.8080200@twiddle.net> References: <516D18F0.4060009@linaro.org> <516EC27E.8080502@twiddle.net> <516FA3CF.8080200@twiddle.net> Date: Thu, 18 Apr 2013 07:47:00 -0000 Message-ID: Subject: Re: [PATCH v2] ARM: Add Cortex-A15 optimized NEON and VFP memcpy routines, with IFUNC. From: Siddhesh Poyarekar To: Richard Henderson Cc: Will Newton , libc-ports@sourceware.org, Patch Tracking Content-Type: text/plain; charset=ISO-8859-1 X-SW-Source: 2013-04/txt/msg00085.txt.bz2 On 18 April 2013 13:12, Richard Henderson 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 -- http://siddhesh.in