intel/compiler: call brw_nir_adjust_payload from brw_postprocess_nir
What does this MR do and why?
intel/compiler: call brw_nir_adjust_payload from brw_postprocess_nir
Calling anything after nir_trivialize_registers() risks undoing some of its work. In this case, brw_nir_adjust_payload() will do a constant folding pass if any payload adjusting happened, and that can turn a bunch of @store_regs into basically noops.
Fixes dEQP-VK.subgroups.*task