From: Matthew Miller <mattdm@xxxxxxxxxx>
> I think it goes something like this: "Bu.... bigger number... bigger
> number faster! Want bigger number!" :)
Never confuse marketing with actual ISA compatibility and optimization.
Consider an i586 ISA target (--march=i586) or ISA optimization
(--mopt=i586) a _de-optimization_ for i686 ISA compatible processors.
And that include's Intel's own Pentium Pro/II, III/M, 4, etc...
Just because it's higher doesn't necessarily mean better. Heck, Intel
is going back to the P3 core because the P4 core isn't scaling, and it
was a really quick hack that has poor ALU and FPU performance MHz
for MHz compared to the PPro-P3 design.
--
Bryan J. Smith mailto:b.j.smith@xxxxxxxx
