Patches for SI

[Michel Dänzer]

On Don, 2013-03-21 at 12:37 +0100, Christian König wrote:
> 
> attached are the next bunch of improvements for the SI llvm backend.
> 
> Since Tom is on vacation it's probably on us to review them ourself. 
> They are stabilizing the register allocation, and so should make it 
> possible to use RegPressure scheduling again without running out of 
> registers in (for example) lightsmark.

Sounds good.

Patch 2 makes sense for the intrinsics loading inputs or constants, but
how is texture sampling not reading from memory? :)

For patch 3, 'switch back to RegPressure' is somewhat misleading, as we
were originally not setting any scheduling preference, and I don't think
RegPressure is the default? Also, will this tend to result in using more
GPRs? Couldn't using fewer GPRs allow dispatching more threads in
parallel in some cases? 

Patch 6 is above my head I'm afraid.

The rest looks good to me.


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer