i965: Handle nested uniform array indexing

When converting a uniform array reference to a pull constant load, the
`reladdr` expression itself may have its own `reladdr`, arbitrarily
deeply. This arises from expressions like:

   a[b[x]]     where a, b are uniform arrays (or lowered const arrays),
               and x is not a constant.

Just iterate the lowering to pull constants until we stop seeing these
nested. For most shaders, there will be only one pass through this loop.

Fixes the piglit test:
tests/spec/glsl-1.20/linker/double-indirect-1.shader_test

Signed-off-by: Chris Forbes <[email protected]>
Cc: "10.3 10.4" <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

0 files changed, 0 insertions, 0 deletions