At 2004-07-17T16:15:54+1200, Chris Wilkinson wrote:
> "K7" and "AthlonXP/Duron" are one and the same architecture...you will
> often see motherboards for AthlonXP/Duron labelled similar to mine,
> which is a K7VM4...
Not true. The "Athlon XP" is fairly different to the older K7;
primarily, the XP has additional instructions (it implements SSE,
borrowed from the Pentium III), it also has hardware prefetch, improved
TLBs, etc.
Having said that, I don't believe GCC yet supports generating different
instruction sequeuences (i.e. it won't perform different instruction
scheduling) when compiling with --march=athlon-xp versus --march=k7.
Use of SSE instructions is controlled by a separate command-line
parameter, so --march= won't effect that either.
Cheers,
-mjg
--
Matthew Gregan |/
/| [EMAIL PROTECTED]
