On Mon, 23 Jan 2006 17:31:01 +0100 Ralf Corsepius <rc040203@xxxxxxxxxx> wrote: > > -Os is undeniably good for 2), most likely to the point where it beats > > performance. > That exactly is the question! > > The subsequent one would be: Where is the origin? > This has already been answered in previous responses. Modern processors are so much faster than memory and other subsystems that cache misses destroy most benefits of loop unrolling and other -02 "speed" optimizations that were more appropriate for older systems. Using -0s ends up generating code which has the best chance of reducing cache misses and thus ends up being faster as well as smaller. Sean -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
