[Mesa-dev] prep work for 64-bit integer support

[Dave Airlie]

>>
>> I'm in no way opposed to having shareable "fudging" logic, so that it
>> can be used by drivers with less sophisticated backends, or ones that
>> are getting less development interest. Just want to make sure that a
>> way to let the backend just deal with it remains.
>
> For r600, the lowering to int32 should take place in a common place
> (e.g. GLSL IR). For radeonsi, we'd like to get all int64 opcodes
> because we already have full int64 support in the LLVM backend.
>

Just to followup, I've hooked up the radeonsi llvm backend in my
branch now.

It passes nearly all the tests (one div case in fs/gs/vs fails.)

Dave.