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Date:      Sat, 18 Mar 2000 03:18:45 +0100
From:      =?iso-8859-1?Q?Thomas_K=F6llmann?= <koellmann@gmx.net>
To:        R Joseph Wright <rjoseph@nwlink.com>
Cc:        freebsd-current@FreeBSD.ORG
Subject:   Re: gcc -Os optimisation broken (RELENG_4)
Message-ID:  <20000318031845.A1816@home.net>
In-Reply-To: <Pine.BSF.4.21.0003170922440.9372-100000@mammalia.sea>; from rjoseph@nwlink.com on Fri, Mar 17, 2000 at 09:28:31AM -0800
References:  <20000317125045.A15480@schumann.cx> <Pine.BSF.4.21.0003170922440.9372-100000@mammalia.sea>

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R Joseph Wright wrote/schrieb (Friday, March 17, 2000):

| > In contrast, I've been using -Os -march=pentium during the last three
| > months for buildworld and the kernel. Never had problems whatsoever.
| 
| Perhaps this is a bit off topic, but can the pentium optimisations be used
| for AMD K6 processors?

I did a `make world' yesterday with 
        CFLAGS=         -O2 -pipe -march=pentium
        COPTFLAGS=      -O2 -pipe -march=pentium
(inspired by recent mention of optimizing on this list) on my
        AMD-K6(tm) 3D processor (350.80-MHz 586-class CPU)
desktop machine. It still runs, but I'll have yet to see whether
this will cause any suspicious behaviour. 

If it doesn't I'll probably try `-03 -pipe -march=pentium' come next
`make world' time, but this all is about a machine that has it's
backup mechanisms (hopefully) and can afford a little downtime.

Gruß
 - Thomas

-- 
On the way downtown I stopped at a bar and had a couple of double
Scotches. They didn't do me any good. All they did was make me think of
Silver-Wig, and I never saw her again. -- Raymond Chandler, The Big Sleep
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