This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: Why use pentium4 for Pentium M?
- From: Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>
- To: Zuxy Meng <zuxy dot meng at gmail dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Tue, 27 Feb 2007 08:14:03 +0100
- Subject: Re: Why use pentium4 for Pentium M?
- References: <es0c4q$fod$1@sea.gmane.org>
Zuxy Meng wrote:
Hi,
-march=native choose pentium4 instead of pentium-m for Pentium M processors
(see config/i386/driver-i386.c)? Is this intentional or a typo?
I think the reason is that Intel changed completely the
microarchitecture (going back to something that actually is more similar
to Pentium III's) without bumping the number returned by CPUID (or
without going back to the P3's number, 6).
Paolo