On Thu, May 27, 2010 at 7:52 PM, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:
>> Look up tables have some hidden penalties but I think it might be a
>> win. Looks like we may have to benchmark the solutions against one
>> another to really know which is best in real life.
>
> For x86 and ppc the single assembler instruction is fastest. Can you wire
> an R600 to anything else ?
2400HD and 4350HD are available as PCI, so I could get one in an
Alpha, but I haven't yet.
(Alpha has count-{leading,trailing} zero instructions too)
Matt
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/dri-devel
