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From: Aaron Lehmann <aaronl@vitelus.com>
To: Michael Frank <mhf@linuxmail.org>
Cc: Yann Droneaud <yann.droneaud@mbda.fr>,
	fruhwirth clemens <clemens-dated-1063536166.2852@endorphin.org>,
	linux-kernel@vger.kernel.org
Subject: Re: nasm over gas?
Date: Fri, 5 Sep 2003 16:51:21 -0700	[thread overview]
Message-ID: <20030905235121.GB2743@vitelus.com> (raw)
In-Reply-To: <200309042257.12739.mhf@linuxmail.org>

On Thu, Sep 04, 2003 at 10:57:12PM +0800, Michael Frank wrote:
> As to using assembler, It is better to get rid of it but in special cases.
> Todays compilers are the better coders in 98+% of applications

This has already been shot down pretty well but a good example of why
it's not true is George Woltman's prime95 (mprime on linux) program.
The core is an FFT which has been painfully rewriten several times for
different cores to maximize performance. It makes extensive use of
SSE2 on the P4, which I haven't seen compilers do much of. George is a
great coder and he's pipelined everything so well that there really
isn't much room for improvement. This assembly is several times faster
than what gcc would be able to generate.

  parent reply	other threads:[~2003-09-05 23:54 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-09-04 10:42 nasm over gas? Fruhwirth Clemens
2003-09-04 12:32 ` Antonio Vargas
2003-09-04 13:44 ` Yann Droneaud
2003-09-04 14:05   ` Richard B. Johnson
2003-09-04 14:21     ` Sean Neakums
2003-09-04 14:33       ` Richard B. Johnson
2003-09-04 15:09         ` Yann Droneaud
2003-09-04 14:55     ` Yann Droneaud
2003-09-05 21:16       ` George Anzinger
2003-09-04 14:57   ` Michael Frank
2003-09-04 15:43     ` Fruhwirth Clemens
2003-09-04 22:28     ` insecure
2003-09-05 12:59       ` Michael Frank
2003-09-05 17:28         ` insecure
2003-09-05 17:45           ` Jörn Engel
2003-09-06 17:18             ` insecure
2003-09-07 18:49           ` Eric W. Biederman
2003-09-07 19:30             ` Jamie Lokier
2003-09-09 21:37               ` insecure
2003-09-09 21:34             ` insecure
2003-09-11 11:07               ` Ricardo Bugalho
2003-09-12 15:26                 ` insecure
2003-09-12 17:27                   ` Ricardo Bugalho
2003-09-12 22:17                     ` Jörn Engel
2003-09-13 19:25                       ` Jamie Lokier
2003-09-13 19:51                         ` Jörn Engel
2003-09-11 14:03               ` Eric W. Biederman
2003-09-11 17:05                 ` Jamie Lokier
2003-09-09 20:56           ` Pavel Machek
2003-09-05 13:27       ` Jesse Pollard
2003-09-05 23:51     ` Aaron Lehmann [this message]
2003-09-06  1:41       ` Valdis.Kletnieks
2003-09-04 14:56 ` Yann Droneaud
2003-09-05 11:42 ` Jörn Engel
2003-09-05 12:04   ` Fruhwirth Clemens
2003-09-05 12:37     ` Jörn Engel
2003-09-05 12:21 John Bradford
2003-09-05 12:25 John Bradford
2003-09-05 12:25 ` Fruhwirth Clemens
2003-09-06 22:08   ` Herbert Poetzl
2003-09-07 20:40     ` Fruhwirth Clemens
2003-09-05 13:20 ` Richard B. Johnson
2003-09-05 13:57 John Bradford
2003-09-05 15:39 ` Mehmet Ceyran
2003-09-06 20:24   ` David B. Stevens
     [not found] <rZQN.83u.21@gated-at.bofh.it>
     [not found] ` <saVL.7lR.1@gated-at.bofh.it>
     [not found]   ` <soFo.16a.1@gated-at.bofh.it>
     [not found]     ` <ssJa.6M6.25@gated-at.bofh.it>
     [not found]       ` <tcVB.rs.3@gated-at.bofh.it>
2003-09-08 12:03         ` Ihar 'Philips' Filipau
2003-09-08 13:53           ` Richard B. Johnson
2003-09-08 16:10             ` Jamie Lokier
2003-09-08 16:17           ` Jamie Lokier
2003-09-08 16:45             ` Ihar 'Philips' Filipau
2003-09-08 16:58               ` Jamie Lokier
2003-09-08 17:59           ` William Lee Irwin III
     [not found] <snJB.8dk.25@gated-at.bofh.it>
     [not found] ` <snTm.8qD.41@gated-at.bofh.it>
     [not found]   ` <sTpW.18Z.19@gated-at.bofh.it>
     [not found]     ` <teE5.2XZ.9@gated-at.bofh.it>
2003-09-08 12:07       ` Ihar 'Philips' Filipau
     [not found] <tt0q.6Rc.17@gated-at.bofh.it>
     [not found] ` <tt0r.6Rc.19@gated-at.bofh.it>
     [not found]   ` <tt0r.6Rc.21@gated-at.bofh.it>
     [not found]     ` <tt0r.6Rc.23@gated-at.bofh.it>
     [not found]       ` <tt0r.6Rc.25@gated-at.bofh.it>
     [not found]         ` <tt0q.6Rc.15@gated-at.bofh.it>
     [not found]           ` <tyCN.6RD.13@gated-at.bofh.it>
2003-09-08 20:08             ` Ihar 'Philips' Filipau

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