From: Richard Henderson <rth@cygnus.com>
To: "Harvey J. Stein" <hjstein@bfr.co.il>
Cc: Richard Henderson <rth@cygnus.com>,
law@cygnus.com, egcs@cygnus.com, hjstein@blinky.bfr.co.il
Subject: Re: EGCS vs GCC performance
Date: Tue, 20 Jan 1998 10:07:00 -0000 [thread overview]
Message-ID: <19980120101054.16217@dot.cygnus.com> (raw)
In-Reply-To: <m24t2zbimz.fsf@blinky.bfr.co.il>
On Tue, Jan 20, 1998 at 11:27:00AM +0200, Harvey J. Stein wrote:
> What about EV56s?
They have the same scheduling characteristics as ev5.
> And as of what date is the above the case? With egcs-1.0 on redhat 4.2 I
> found egcs producing code which ran about the same as gcc 2.7.2.1,
> sometimes a little slower (-O2 -mcpu=21164).
The last tweeks went in on 971223. Dunno what to tell you about
slowdowns -- if you can examine the differences between the two
executables and come up with theories on why it is slower in your
case we may be able to fix it.
> How much of
> a difference does -mcpu=21164 vs -mcpu=21164a make?
As always it depends on the program, but on code that does a lot
of character manipulation I've heard up to 20%.
r~
next prev parent reply other threads:[~1998-01-20 10:07 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-01-12 20:31 Dave Steffen
1998-01-14 4:17 ` jbuck
1998-01-15 16:06 ` David Edelsohn
1998-01-15 16:30 ` Jeffrey A Law
1998-01-17 23:02 ` Marc Lehmann
1998-01-18 21:51 ` Harvey J. Stein
1998-01-18 0:13 ` Jeffrey A Law
1998-01-19 10:12 ` Richard Henderson
1998-01-20 2:21 ` Harvey J. Stein
1998-01-20 10:07 ` Richard Henderson [this message]
1998-01-20 14:54 ` Toon Moene
1998-01-20 14:54 ` Richard Henderson
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