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: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit 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