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Date:      Thu, 19 Jul 2001 17:32:42 +0200
From:      "Karsten W. Rohrbach" <karsten@rohrbach.de>
To:        Gordon Tetlow <gordont@gnf.org>
Cc:        Stewart Morgan <stewart@nameless-uk.com>, freebsd-stable@FreeBSD.ORG, 'Greg Lehey' <grog@lemis.com>
Subject:   Re: PANIC in FFS -- Please HELP!
Message-ID:  <20010719173242.O39506@mail.webmonster.de>
In-Reply-To: <Pine.LNX.4.33.0107182000480.19368-100000@smtp.gnf.org>; from gordont@gnf.org on Wed, Jul 18, 2001 at 08:04:41PM -0700
References:  <000001c10fb2$ed07a0e0$0f01000a@saturn> <Pine.LNX.4.33.0107182000480.19368-100000@smtp.gnf.org>

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Gordon Tetlow(gordont@gnf.org)@2001.07.18 20:04:41 +0000:
> On Wed, 18 Jul 2001, Stewart Morgan wrote:
>=20
> > CPUTYPE=3Di686
> >
> > CFLAGS=3D-O -pipe -felide-constructors -mcpu=3Dpentiumpro -march=3Dpent=
iumpro
> > -ffast-math -felide-constructors -fexpensive-optimizations
> > -funroll-loops -funroll-all-loops -fmemoize-lookups -fsave-memoized
> > -fno-strength-reduce
> >
> > CXXFLAGS+=3D-O -pipe -felide-constructors -mcpu=3Dpentiumpro
> > -march=3Dpentiumpro -ffast-math -felide-constructors
> > -fexpensive-optimizations -funroll-loops -funroll-all-loops
> > -fmemoize-lookups -fsave-memoized -fno-strength-reduce
> >
> > COPTFLAGS=3D-O -pipe -felide-constructors -mcpu=3Dpentiumpro
> > -march=3Dpentiumpro -ffast-math -felide-constructors
> > -fexpensive-optimizations -funroll-loops -funroll-all-loops
> > -fmemoize-lookups -fsave-memoized -fno-strength-reduce
> >
> >
>=20
> I feel obligated to point out the warning from /etc/defaults/make.conf:
>=20
> # CFLAGS controls the compiler settings used when compiling C code.
> # Note that optimization settings above -O (-O2, ...) are not recommended
> # or supported for compiling the world or the kernel - please revert any
> # nonstandard optimization settings to "-O" before submitting bug reports
> # to the developers.
>=20
> Please try your setup with the a "normal" CFLAGS (ie -O -pipe) and then
> see if you get a reproducible panic. If you do, then report it to the
> mailing list. Otherwise, you are a victim of a *known* bad code optimizer
> which you were warned about.

has anybody tried gcc-3.0's code generation yet?

/k

>=20
> -gordon
>=20
>=20
>=20
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-stable" in the body of the message

--=20
> Parts that don't exist can't break. --Russell Nelson=20
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