On Sun, May 24, 2009 at 10:23:05PM +1200, Michael Hope wrote:
> Hi there. I'm working on a port to an architecture where the pointer
> registers X and Y are directly backed by small 128 byte caches.
> Changing one of these registers to a different memory row causes a
> cache load cycle, so using t
Michael Hope writes:
> How can I prevent the register allocator from using these for anything
> but memory access?
Unfortunately, you can't. You can make them the last registers the
allocator will use, but if you say that they can hold Pmode values then
the register allocator will use them.
>
Hi there. I'm working on a port to an architecture where the pointer
registers X and Y are directly backed by small 128 byte caches.
Changing one of these registers to a different memory row causes a
cache load cycle, so using them for memory access is fine but using
them as general purpose regist
