nir,aco: add test intrinsics

These don't really do anything. They're just a source and user of SSA
defs.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28301>

src/amd/compiler/aco_instruction_selection.cpp

@@ -9341,6 +9341,15 @@ visit_intrinsic(isel_context* ctx, nir_intrinsic_instr* instr)
       break;
    }
    case nir_intrinsic_cmat_muladd_amd: visit_cmat_muladd(ctx, instr); break;
+   case nir_intrinsic_unit_test_amd:
+      bld.pseudo(aco_opcode::p_unit_test, Operand::c32(nir_intrinsic_base(instr)),
+                 get_ssa_temp(ctx, instr->src[0].ssa));
+      break;
+   case nir_intrinsic_unit_test_uniform_amd:
+   case nir_intrinsic_unit_test_divergent_amd:
+      bld.pseudo(aco_opcode::p_unit_test, Definition(get_ssa_temp(ctx, &instr->def)),
+                 Operand::c32(nir_intrinsic_base(instr)));
+      break;
    default:
       isel_err(&instr->instr, "Unimplemented intrinsic instr");
       abort();