On Thu, Nov 5, 2009 at 6:22 PM, Michael Cree <[email protected]> wrote: > On 6/11/2009, at 11:25 AM, Matt Turner wrote: > >> Lifted from Compaq's Compiler Writer's Guide for the Alpha 21264, >> appendix B. >> >> >> http://h18000.www1.hp.com/cpq-alphaserver/technology/literature/cmpwrgd.pdf >> >> Signed-off-by: Matt Turner <[email protected]> > > While the code does not appear to use any EV6 (21264) specific instructions > so should work on any Alpha it is carefully scheduled to be optimised for an > EV6. I wonder what performance gains are achieved on older Alphas?
I don't have any idea. I've got a couple EV56s, but I don't do much testing with them. If you've got an EV5 already set up, it'd be interesting to hear the results. I might do it the next time I'm around my EV5s. I don't know much about optimizing for EV5 other than MVI instructions' latency is pretty different. Matt _______________________________________________ xorg-devel mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-devel
