gcc/libm floating-point bug?
Daniel Eischen
eischen at pcnet1.pcnet.com
Wed May 21 18:44:59 PDT 2003
On Wed, 21 May 2003, Jeremy Messenger wrote:
> On Wed, 21 May 2003 18:10:14 -0700, David O'Brien <obrien at FreeBSD.ORG>
> wrote:
[ snip ]
> > Honest question of you -- I'll assume you're subscribed to
> > freebsd-current at . 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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