Re: what cflag/march to use for intel core duo l2400?

[Tim Prince <timothyprince@xxxxxxxxxxxxx>]

George Nychis wrote:
> Hi,
>
> I was wondering what march to specify in my cflags for the Intel Core 
> Duo L2400 processor.  The gentoo-wiki says that the safe cflag is 
> prescott, but I figured I would ask here to find the optimal for this 
> processor, or if the prescott is truly the safest/optimal.
The wiki might be right, if you are using the same gcc version they have 
in mind.  How are we to know?  Might there a conflict between safety and 
optimality?
Do you disqualify gcc-4.2 on grounds of safety?  Surely, it would often 
generate better code, and avoid the question of what -march option to 
choose.