On Wed, 26 Feb 2003, Nuno Teixeira wrote: > 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).
IIRC, 166 and 180 Mhz PPros don't support MMX. I'm seeing differences in compiled code between simple -march=athlon-xp and -march=athlon-xp -mmmx -m3dnow -msse. Regards, > Andre Guibert de Bruet | Enterprise Software Consultant > > Silicon Landmark, LLC. | http://siliconlandmark.com/ > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
