From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:55945) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UN1Vl-0007Vj-Mh for qemu-devel@nongnu.org; Tue, 02 Apr 2013 09:44:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UN1Vf-0002uk-4B for qemu-devel@nongnu.org; Tue, 02 Apr 2013 09:44:29 -0400 Received: from mail-vc0-f181.google.com ([209.85.220.181]:56567) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UN1Ve-0002uY-UL for qemu-devel@nongnu.org; Tue, 02 Apr 2013 09:44:22 -0400 Received: by mail-vc0-f181.google.com with SMTP id hv10so411158vcb.26 for ; Tue, 02 Apr 2013 06:44:22 -0700 (PDT) Sender: Richard Henderson Message-ID: <515AE0B2.5090005@twiddle.net> Date: Tue, 02 Apr 2013 06:44:18 -0700 From: Richard Henderson MIME-Version: 1.0 References: <1364876610-3933-1-git-send-email-rth@twiddle.net> <1364876610-3933-18-git-send-email-rth@twiddle.net> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v3 17/27] tcg-ppc64: Implement bswap64 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Alexander Graf Cc: av1474@comtv.ru, qemu-devel@nongnu.org, aurelien@aurel32.net On 2013-04-01 23:34, Alexander Graf wrote: > Is this faster than a load/store with std/ldbrx? Hmm. Almost certainly not. And since we've got stack space allocated for function calls, we've got scratch space to do it in. Probably similar for bswap32 too, eh? I'll do a tiny bit o benchmarking for power7. r~