nir: Delete the fnoise opcodes

As of the previous commit, they are never used.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4624>

src/compiler/nir/nir_constant_expressions.py

@@ -420,8 +420,7 @@ struct ${type}${width}_vec {
       % else:
          ## Splat the value to all components.  This way expressions which
          ## write the same value to all components don't need to explicitly
-         ## write to dest.  One such example is fnoise which has a
-         ## const_expr of 0.0f.
+         ## write to dest.
          dst.x = dst.y = dst.z = dst.w = ${op.const_expr};
       % endif
 

src/compiler/nir/nir_opcodes.py

@@ -458,12 +458,6 @@ for (unsigned bit = 0; bit < bit_size; bit++) {
 }
 """)
 
-
-for i in range(1, 5):
-   for j in range(1, 5):
-      unop_horiz("fnoise{0}_{1}".format(i, j), i, tfloat, j, tfloat, "0.0f")
-
-
 # AMD_gcn_shader extended instructions
 unop_horiz("cube_face_coord", 2, tfloat32, 3, tfloat32, """
 dst.x = dst.y = 0.0;

src/intel/compiler/brw_fs_nir.cpp

@@ -1606,24 +1606,6 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr,
    case nir_op_b32any_inequal4:
       unreachable("Lowered by nir_lower_alu_reductions");
 
-   case nir_op_fnoise1_1:
-   case nir_op_fnoise1_2:
-   case nir_op_fnoise1_3:
-   case nir_op_fnoise1_4:
-   case nir_op_fnoise2_1:
-   case nir_op_fnoise2_2:
-   case nir_op_fnoise2_3:
-   case nir_op_fnoise2_4:
-   case nir_op_fnoise3_1:
-   case nir_op_fnoise3_2:
-   case nir_op_fnoise3_3:
-   case nir_op_fnoise3_4:
-   case nir_op_fnoise4_1:
-   case nir_op_fnoise4_2:
-   case nir_op_fnoise4_3:
-   case nir_op_fnoise4_4:
-      unreachable("not reached: should be handled by lower_noise");
-
    case nir_op_ldexp:
       unreachable("not reached: should be handled by ldexp_to_arith()");
 

src/intel/compiler/brw_vec4_nir.cpp

@@ -1629,24 +1629,6 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr)
       emit(CMP(dst, op[0], brw_imm_d(0), BRW_CONDITIONAL_NZ));
       break;
 
-   case nir_op_fnoise1_1:
-   case nir_op_fnoise1_2:
-   case nir_op_fnoise1_3:
-   case nir_op_fnoise1_4:
-   case nir_op_fnoise2_1:
-   case nir_op_fnoise2_2:
-   case nir_op_fnoise2_3:
-   case nir_op_fnoise2_4:
-   case nir_op_fnoise3_1:
-   case nir_op_fnoise3_2:
-   case nir_op_fnoise3_3:
-   case nir_op_fnoise3_4:
-   case nir_op_fnoise4_1:
-   case nir_op_fnoise4_2:
-   case nir_op_fnoise4_3:
-   case nir_op_fnoise4_4:
-      unreachable("not reached: should be handled by lower_noise");
-
    case nir_op_unpack_half_2x16_split_x:
    case nir_op_unpack_half_2x16_split_y:
    case nir_op_pack_half_2x16_split: