Date: Wed, 21 May 2003 21:44:57 -0400 (EDT) From: Daniel Eischen <eischen@pcnet1.pcnet.com> To: Jeremy Messenger <mezz7@cox.net> Cc: freebsd-current@freebsd.org Subject: Re: gcc/libm floating-point bug? Message-ID: <Pine.GSO.4.10.10305212134410.17941-100000@pcnet1.pcnet.com> In-Reply-To: <oprpju0hyu8ckrg5@smtp.central.cox.net>
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On Wed, 21 May 2003, Jeremy Messenger wrote: > On Wed, 21 May 2003 18:10:14 -0700, David O'Brien <obrien@FreeBSD.ORG> > wrote: [ snip ] > > Honest question of you -- I'll assume you're subscribed to > > freebsd-current@. How have you missed all the warnings from myself and > > others not to trust the -march=pentium4 optimizations? I honestly want > > to know so we can figure out a better way of getting the word out. > > Perhaps, it should be add in the errata? Also, add the comments in the > make.conf. > > Cheers, > Mezz > > >> I'm not sure how CPUTYPE gets handled, but perhaps p4 should expand to - > >> march=pentium3, if possible. > > > > I feel some will screem if we take away the ability to use > > -march=pentium4 in places they know for sure will work. Unix is about > > mechanisms, not policy. Why do we set CPUTYPE by default? This has bit me before also. It seems to me that NO_CPU_CFLAGS=yes should be the default. Even -mpentiumpro caused problems for me. -- Dan Eischen
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