From: Ralf Baechle <ralf@oss.sgi.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-mips@oss.sgi.com
Subject: Re: CVS Update@oss.sgi.com: linux
Date: Wed, 19 Dec 2001 00:30:44 -0200 [thread overview]
Message-ID: <20011219003044.H2717@dea.linux-mips.net> (raw)
In-Reply-To: <Pine.GSO.4.21.0112181044300.15364-100000@vervain.sonytel.be>; from geert@linux-m68k.org on Tue, Dec 18, 2001 at 11:23:32AM +0100
On Tue, Dec 18, 2001 at 11:23:32AM +0100, Geert Uytterhoeven wrote:
> > Log message:
> > Rewrite ffz(). Now compiles into code without any branches.
>
> Depending on your compiler. Gcc seems to be smarter than GreenHills here :-)
I'd rather call this piece of code to be written around the compiler.
Credits for this nice piece of code btw go to Carsten of MIPS who used
this in the Atlas code where I discovered it two days ago.
The old variant of this routine came from the Origin code and produces
60% longer code with ~ 5 branches. Probably wrapped around the SGI
compiler.
Ralf
next parent reply other threads:[~2001-12-19 3:31 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200112171934.fBHJYx328839@oss.sgi.com>
[not found] ` <Pine.GSO.4.21.0112181044300.15364-100000@vervain.sonytel.be>
2001-12-19 2:30 ` Ralf Baechle [this message]
[not found] <200208230950.g7N9o0fq016617@oss.sgi.com>
2002-08-23 10:13 ` CVS Update@oss.sgi.com: linux Jan-Benedict Glaw
2002-08-23 10:41 ` Maciej W. Rozycki
[not found] <200208130138.g7D1cYk3010974@oss.sgi.com>
2002-08-19 12:35 ` Maciej W. Rozycki
2002-08-19 12:57 ` Alan Cox
2002-08-19 13:22 ` Maciej W. Rozycki
2002-08-19 13:56 ` Alan Cox
2002-08-19 13:42 ` Ralf Baechle
2002-08-20 14:10 ` Maciej W. Rozycki
[not found] <200208151925.g7FJPbfD009802@oss.sgi.com>
[not found] ` <20020815193340.GB10730@lug-owl.de>
2002-08-15 19:46 ` Ralf Baechle
2002-08-19 12:32 ` Maciej W. Rozycki
[not found] <200206301157.g5UBvrwF019470@oss.sgi.com>
2002-07-01 19:15 ` Guido Guenther
[not found] <200202022138.g12LcZU24388@oss.sgi.com>
[not found] ` <Pine.GSO.3.96.1020203191613.20409B-100000@delta.ds2.pg.gda.pl>
2002-02-03 18:37 ` Ralf Baechle
2002-02-04 11:32 ` Maciej W. Rozycki
2002-02-04 19:03 ` Jun Sun
[not found] <200111180324.fAI3Ob928062@oss.sgi.com>
[not found] ` <20011118092625.B23198@lug-owl.de>
[not found] ` <001801c17019$56f562a0$0deca8c0@Ulysses>
2001-11-21 23:25 ` Ralf Baechle
2001-11-21 23:36 ` Matthew Dharm
2001-11-21 23:36 ` Matthew Dharm
2001-11-22 8:56 ` Jan-Benedict Glaw
2001-11-22 10:18 ` Geert Uytterhoeven
[not found] <200111060055.fA60tX331454@oss.sgi.com>
2001-11-06 1:46 ` Florian Lohoff
[not found] <200109300029.f8U0TZv12410@oss.sgi.com>
[not found] ` <Pine.GSO.3.96.1011003125730.15867A-100000@delta.ds2.pg.gda.pl>
2001-10-03 17:50 ` Ralf Baechle
2001-10-03 21:13 ` Jun Sun
2001-10-03 21:27 ` Ralf Baechle
[not found] <200104102242.f3AMgmc19116@oss.sgi.com>
2001-04-11 7:35 ` Ralf Baechle
2001-04-11 18:00 ` Kanoj Sarcar
2001-04-11 18:00 ` Kanoj Sarcar
2001-04-16 17:43 ` Quinn Jensen
2001-04-16 17:43 ` Quinn Jensen
2001-04-17 17:12 ` Ralf Baechle
[not found] <20001118132233Z553804-494+838@oss.sgi.com>
[not found] ` <XFMail.001118180639.Harald.Koerfgen@home.ivm.de>
2000-11-18 17:21 ` Ralf Baechle
2000-11-18 18:13 ` Justin Carlson
2000-11-18 18:36 ` Kevin D. Kissell
2000-11-18 18:36 ` Kevin D. Kissell
2000-11-19 15:16 ` Dominic Sweetman
2000-11-21 3:39 ` Ralf Baechle
[not found] <20000906233636Z42230-31375+649@oss.sgi.com>
2000-09-06 23:45 ` Ralf Baechle
2000-09-06 23:51 ` Kanoj Sarcar
2000-09-06 23:51 ` Kanoj Sarcar
2000-09-07 0:02 ` Ralf Baechle
2000-09-07 0:05 ` Kanoj Sarcar
2000-09-07 0:05 ` Kanoj Sarcar
2000-09-07 0:26 ` Ralf Baechle
[not found] <20000823172400Z42326-31375+197@oss.sgi.com>
2000-08-23 19:56 ` Ralf Baechle
2000-08-23 23:12 ` Kanoj Sarcar
2000-08-23 23:12 ` Kanoj Sarcar
[not found] <20000702193011Z42202-29274+369@oss.sgi.com>
[not found] ` <XFMail.000704192753.Harald.Koerfgen@home.ivm.de>
2000-07-04 21:22 ` Ralf Baechle
2000-07-05 18:24 ` Harald Koerfgen
[not found] <20000524012413.A5507@spock>
2000-05-24 16:50 ` Harald Koerfgen
2000-05-24 23:58 ` Ralf Baechle
2000-05-25 17:14 ` Harald Koerfgen
2000-05-25 17:19 ` Ulf Carlsson
2000-05-25 18:00 ` Ralf Baechle
2000-05-25 18:02 ` Ulf Carlsson
2000-05-25 18:17 ` Ralf Baechle
[not found] <20000519083237Z305155-391+603@oss.sgi.com>
2000-05-19 11:18 ` Ralf Baechle
[not found] <20000327210518Z305163-3992+178@oss.sgi.com>
2000-03-28 0:29 ` Ralf Baechle
[not found] <20000219003324Z305163-11638+186@oss.sgi.com>
[not found] ` <Pine.GSO.4.10.10002211054270.29481-100000@dandelion.sonytel.be>
2000-02-21 11:58 ` Ralf Baechle
[not found] ` <Pine.GSO.4.10.10002211634260.4234-100000@dandelion.sonytel.be>
2000-02-21 18:03 ` Ralf Baechle
2000-02-22 2:45 ` Geert Uytterhoeven
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