On Mon, Apr 09, 2007 at 10:51:22AM -0700, Mike Stump wrote: > On Apr 8, 2007, at 8:51 PM, Zuxy Meng wrote: > >Intel's optimization reference manual says that: > > I wasn't going off the documentation... I'd be more interested in > either benchmarks or in recommendations by Intel people that know the > details of the core2 and the performance impact of those details.
I am double checking it now. Intel's optimization guide covers both P4 and C2D. You shouldn't use inc/dec when you are compiling code to run on both P4 and C2D. But optimizing for C2D only is different. H.J.
