Ulrich Drepper (drepper@xxxxxxxxxx) said: > The Atom core has nothing to do with the Core2 or P4 or any other core. > Whoever told you Prescott is optimal doesn't know what s/he's talking > about. All cores after the i586 are out-of-order cores, the Atom is an > in-order. This should show you how silly that statement is. > > We are still waiting for Intel to disclose the details about the > micro-architecture. There is no backend support in gcc yet. Right, the main goal of my playing was to see if telling gcc to tune for i586 (another in-order core) would help on Atom as an accident/side-effect, without detailed knowledge of atom. It does not. (In fact, on the processors I tested (Athlon64, Core2Duo, Atom), the effects of -mtune=generic vs -mtune=i686 vs -mtune=i586 were pretty much identical across all of them.) Bill -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
