From mboxrd@z Thu Jan  1 00:00:00 1970
From: Albert ARIBAUD <albert.u.boot@aribaud.net>
Date: Sat, 01 Oct 2011 08:48:06 +0200
Subject: [U-Boot] [RFC PATCH] arm: provide a CONFIG flag for disabling
 relocation
In-Reply-To: <4E856DF7.6010703@gmail.com>
References: <BC0A2F434D4F39448D24A68EA6EFFB9F0194D534@EU-FR-EXBE07.eu.corp.airliquide.com>
	<20110920180959.8008F1208F1E@gemini.denx.de>
	<4E78E5DE.60300@aribaud.net>
	<BC0A2F434D4F39448D24A68EA6EFFB9F0194DA79@EU-FR-EXBE07.eu.corp.airliquide.com>
	<4E79C1B5.7040101@aribaud.net> <4E79C887.6010906@gmail.com>
	<4E79D27D.30409@aribaud.net> <4E79D91C.8070008@gmail.com>
	<E91E4965-4519-4B1C-B60B-D05CEF057499@googlemail.com>
	<4E856DF7.6010703@gmail.com>
Message-ID: <4E86B7A6.5080204@aribaud.net>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

Le 30/09/2011 09:21, Simon Schwarz a ?crit :
> On 09/29/2011 06:14 PM, Andreas Bie?mann wrote:
> [SNIP]
>> Simon, who has just finished his bachelor thesis did this test for me
>> (thanks to this way ...).
>> It seems using more register for ldmia/stmia does _not_ improve the copy
>> time that much. Simon measured 10.8 ms for r9-r10 and 10.65 ms for
>> r3-r10 (unfortunately
>> I do not know which system he tested, but I guess devkit8000).
>>
>> best regards
>>
>> Andreas Bie?mann
>>
>>
> Yes, devkit8000.
>
> Regards
> Simon

Thanks to both of you. I'd somehow expected there not to be a great 
increase as the true limit is bus width.

So let us stick with two registers and avoid register pushes/pops.

Amicalement,
-- 
Albert.