From owner-freebsd-stable  Fri Jul 20 12:59:38 2001
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Date: Fri, 20 Jul 2001 12:59:31 -0700
From: Kris Kennaway <kris@obsecurity.org>
To: Stewart Morgan <stewart@nameless-uk.com>
Cc: 'Gordon Tetlow' <gordont@gnf.org>, freebsd-stable@FreeBSD.ORG,
	'Greg Lehey' <grog@lemis.com>
Subject: Re: PANIC in FFS -- Please HELP! [resolved]
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References: <Pine.LNX.4.33.0107182000480.19368-100000@smtp.gnf.org> <008301c11102$8ec2ea70$0f01000a@saturn>
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In-Reply-To: <008301c11102$8ec2ea70$0f01000a@saturn>; from stewart@nameless-uk.com on Fri, Jul 20, 2001 at 10:58:35AM +0100
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On Fri, Jul 20, 2001 at 10:58:35AM +0100, Stewart Morgan wrote:

> 	*blush* For some reason, I keep forgetting that all -O* does is
> to define the various -f* entries.  *sigh*  More coffee required :)
>=20
> 	Does anybody know which, if any, optimisations actually work
> with _no_ ill effects?  I guess the -march and -mcpu  options are safe?

Relatively safe, though there have been some claims of problems for
various architecture optimisations.  Never underestimate the number of
bugs in gcc :-)

> Otherwise, why are they in -stable.  But the others?

If you're worried, stick with -O.

Kris

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