[PATCH 1/3] r600: add span support for 2D tiling

[Matt Turner]

On Thu, May 27, 2010 at 7:52 PM, Alan Cox <alan at lxorguk.ukuu.org.uk> 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