Hi,
Just a little question:
Does -march=k6-2 implies -m3dnow? Or -march=pentiumpro implies -mmmx?
I always thought that when I use -march it will enable other
porcessor specific optimizations like mmx and 3dnow (if available).
Thanks,
Nuno Teixeira
On Wed, Feb 26, 2003 at 05:06:35PM -0300, Fred Souza wrote:
> > I was recently a participant in a thread in another forum where all sorts
> > of people, including a well respected gcc developer, said categorically
> > that the latest (stock) gcc produces correct code with -O2 in all cases on
> > ia32. If it doesn't, the gcc folks would like a bug report.
>
> I use -O3 -mmmx -m3dnow -march=k6-2 on nearly everything (things that
> break with that many optimization, such as XFree86-4-libraries, I
> "downgrade" to the highest optimization possible - usually -O2), and
> I'm not noticing any bad impacts because of it.
>
> And by "nearly everything" I even meant the kernel (yes, I can respect
> if anyone screams "[EMAIL PROTECTED]" ;-)
>
>
> Fred
>
>
> --
> Insulting a person's appearance:
>
> That's what they mean by dark and handsome. When it's dark, you're
> handsome...
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