Bitshifts and "And" vs Floor-division and Modular

[rusi]

On Sep 7, 9:32 am, Paul Rubin <no.em... at nospam.invalid> wrote:
> rusi <rustompm... at gmail.com> writes:
> > On an 8086/8088 a MUL (multiply) instruction was of the order of 100
> > clocks ...  On most modern processors (after the pentium) the
> > difference has mostly vanished.  I cant find a good data sheet to
> > quote though
>
> See http://www.agner.org/optimize/:

Hey Thanks! Seems like a nice resource!  How on earth does he come up
with the data though, when Intel does not publish it?