From:	w DOT formann AT neuss DOT netsurf DOT de
Sender:	wolfi AT neuss DOT netsurf DOT de
Message-ID:	<3A94ABCC.1F4CA104@neuss.netsurf.de>
Date:	Thu, 22 Feb 2001 07:03:56 +0100
X-Mailer:	Mozilla 4.72 [de] (X11; I; Linux 2.2.14 i686)
X-Accept-Language:	German, de, en
MIME-Version:	1.0
To:	pgcc AT delorie DOT com
Subject:	Re: Probably pgcc-2.95.2.1 does not optimized propertly?
References:	<E14VeIw-0000Qs-00 AT smtp4 DOT port DOT ru>
Reply-To:	pgcc AT delorie DOT com

Nick Kurshev wrote:
> 
> Hello!
> 
> On Tue, 20 Feb 2001 20:25:40 +0100, Marc Lehmann wrote:
> 
> >> 1. Official manual don't contain a lie (may be mistakes and errata only) and I still prone to trust them.
> >
> >most of the optimization tips (like avoidong push and the like) are wrong,

[...]

Nick, probably you should sit back an try out the code
segment at different alignments. On my (old) K6 it is
very important if an instruction crosses 16- and/or
32-byte alignments. This might influence the speed
of the code. There is already a thread discussing that
in Mai'00. This alignment seems to effect the speed of
Athlon (at least the older designs) too.

Take a look at that thread, it might help you

> Best regards! Nick

Wolfgang

- Raw text -