On Thu, Aug 5, 2010 at 8:48 AM, bokkuri matsu <matsubokkuri33@xxxxxxxxx> wrote: > I am using gcc4.1 on intel atom D510 processor. > Which architecture type should be specified with march option ? > With some reasons, i cannot update gcc version to 4.2 which supports > march=native. Support for -march=atom was not added until gcc 4.5. I don't know that any -march option is better than any other for use with Atom in gcc 4.1. Scheduling for the Atom is somewhat different than for other x86 chips. I would just go with -march=i686. Ian
