[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: i686 ---> i586, i386 ---> i586, x86_64 stays the same



On Mon, Apr 06, 2009 at 10:57:48AM -0400, Bill Nottingham wrote:
> Actually, in some testing I did, the fasted was '-march=i686
> -mtune=generic' (which was ~1% faster than '-march=i586 -mtune=generic'),
> tested across Core2Duo, Athlon64, and Atom.
> 
> Twiddling the instruction scheduling (-mtune) invariably made things
> worse, across the board.

Even with -mtune=atom on Atom CPUs?

	Jakub


[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]