On Wed, 19 Sep 2012 11:12:41 +1000, Dave Airlie <airlied@xxxxxxxxx> wrote: > From: Dave Airlie <airlied@xxxxxxxxxx> > > We hit this a lot with i915 and although we'd like to engineer things to hit > it a lot less, this commit at least makes it consume a few less cycles. > > from something containing > movzwl 0x0(%rip),%r10d > to > add %r8,%rdx > > I only noticed it while using perf to profile something else. > > Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx> Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> I would have thought this is something the compiler should, with the appropriate hints, be smart enough to decide for itself as boot_cpu_data should be constant once defined. *shrug* -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
