From: Pavel Machek <pavel@suse.cz>
To: "Richard B. Johnson" <root@chaos.analogic.com>
Cc: Pavel Machek <pavel@suse.cz>, Richard Henderson <rth@twiddle.net>,
Brian Gerst <bgerst@didntduck.org>,
Petr Vandrovec <VANDROVE@vc.cvut.cz>, dvorak <dvorak@xs4all.nl>,
linux-kernel@vger.kernel.org
Subject: Re: Syscall changes registers beyond %eax, on linux-i386
Date: Mon, 23 Sep 2002 20:31:57 +0200 [thread overview]
Message-ID: <20020923183157.GD11237@atrey.karlin.mff.cuni.cz> (raw)
In-Reply-To: <Pine.LNX.3.95.1020923090547.2963B-100000@chaos.analogic.com>
Hi!
> > > It's a problem with a 'general purpose' compiler that wants to
> > > be "all things" to all people. If somebody made a gcc-compatible
> > > compiler, tuned to the ix86 characteristics, I think we could
> > > cut the extra instructions by at least 1/2, maybe more.
> >
> > Remember pgcc?
> >
> > And btw cutting instructions by 1/2might look nice but unless you can
> > keep it as fast as it was, its useless.
> > Pavel
> > --
> Yes, but to see the affect of cutting down the instruction length, you
> need to make benchmarks that emulate running 'forever'. Many bench-
Specs contain things like perl and gcc, those are I believe far too
big to be put entirely into cache and emulate "Real Life" quite
well...
Pavel
--
Casualities in World Trade Center: ~3k dead inside the building,
cryptography in U.S.A. and free speech in Czech Republic.
next prev parent reply other threads:[~2002-09-23 18:28 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-19 17:44 Syscall changes registers beyond %eax, on linux-i386 Petr Vandrovec
2002-09-19 18:04 ` Brian Gerst
2002-09-19 18:30 ` Richard Henderson
2002-09-19 18:51 ` Brian Gerst
2002-09-19 18:57 ` Richard Henderson
2002-09-19 19:40 ` Richard B. Johnson
2002-09-19 19:41 ` Richard Henderson
2002-09-19 19:53 ` Richard B. Johnson
2002-09-19 22:46 ` J.A. Magallon
2002-09-20 12:27 ` Richard B. Johnson
2002-09-20 17:16 ` Richard Henderson
2002-09-22 1:33 ` Pavel Machek
2002-09-23 13:11 ` Richard B. Johnson
2002-09-23 18:31 ` Pavel Machek [this message]
2002-09-19 19:18 ` Richard B. Johnson
2002-09-19 19:24 ` Daniel Jacobowitz
2002-09-19 20:25 ` Mikael Pettersson
2002-09-20 8:32 ` george anzinger
2002-09-21 6:19 ` Richard Henderson
2002-09-21 8:09 ` george anzinger
2002-09-21 15:08 ` Richard Henderson
2002-09-24 18:02 ` CHECKER bate: " george anzinger
-- strict thread matches above, loose matches on Subject: below --
2002-09-19 14:45 dvorak
2002-09-19 16:11 ` Richard B. Johnson
2002-09-19 17:09 ` Brian Gerst
2002-09-19 17:22 ` Richard B. Johnson
2002-09-19 17:51 ` Brian Gerst
2002-09-19 18:30 ` Richard B. Johnson
2002-09-19 17:59 ` dvorak
2002-09-19 18:32 ` Richard B. Johnson
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