From: Holger Freyther <holger+oe@freyther.de>
To: openembedded-devel@lists.openembedded.org
Subject: Re: [PATCH/RFC] qt4-embedded: tune QT_ARCH for armv6
Date: Fri, 05 Nov 2010 10:32:14 +0100 [thread overview]
Message-ID: <4CD3CF1E.4040804@freyther.de> (raw)
In-Reply-To: <4CD305FC.7070305@eukrea.com>
On 11/04/2010 08:14 PM, Eric Bénard wrote:
> Hi,
ill it be?
>>
> in the painting engine, from what I saw in the .h, the asm optimisations are
> only enabled when using ARM RCVT compiler and not when using gcc but I have
> not checked everywhere in the code so I'm not sure of this.
that is something else, I also have a partially applied C implementation that
appears to be faster than the brute force armv6 code.
One benefit of using armv6 is that the atomic code will use a different
implementation (ldrex,strex IIRC instead of swp). In any case please use
something like qttracereply to see if passing armv6 is giving any benefit at all.
next prev parent reply other threads:[~2010-11-05 9:33 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-04 9:52 [PATCH/RFC] qt4-embedded: tune QT_ARCH for armv6 Eric Bénard
2010-11-04 18:05 ` Khem Raj
2010-11-04 18:26 ` Holger Freyther
2010-11-04 19:14 ` Eric Bénard
2010-11-05 9:32 ` Holger Freyther [this message]
2010-11-05 9:42 ` Eric Bénard
2010-11-05 10:21 ` Holger Freyther
2010-11-05 10:41 ` Eric Bénard
2010-11-07 19:42 ` Eric Bénard
2010-11-04 20:27 ` Khem Raj
2010-11-04 21:05 ` Koen Kooi
2010-11-05 11:21 ` Phil Blundell
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