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Re: what cflag/march to use for intel core duo l2400?
- From: Tim Prince <timothyprince at sbcglobal dot net>
- To: George Nychis <gnychis at cmu dot edu>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Wed, 07 Jun 2006 21:16:10 -0700
- Subject: Re: what cflag/march to use for intel core duo l2400?
- References: <448798B5.1050302@cmu.edu>
- Reply-to: tprince at myrealbox dot com
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.