the difference between CPU architecture

[Mike Frysinger]

On Monday 03 January 2005 12:33 am, eme@v003.vaio.ne.jp wrote:
> <snip>
> What I wanna know about, is the difference when I choose
> "-march=c3-2,-march=i686" and "-march=c3,-march=i486".
> Yes, the difference between the C3(Nehemiah core) and the
> C3(not Nehemiah core).
> <snip>
> # So I thought this might be a libc question.

it's not, this is a gcc question

the easiest way to get a clear answer is to look at the gcc source code

march basically says 'enable all optimizations that this CPU is known to 
support'
-mike