nir: add a bit_size parameter to nir_ssa_dest_init

v2: Squash multiple commits addressing the new parameter in different
    files so we don't break the build (Iago)

v3: Fix tgsi (Samuel)

v4: Fix nir_clone.c (Samuel)

v5: Fix vc4 and freedreno (Iago)

v6 (Sam)
- Fix build errors in nir_lower_indirect_derefs
- Use helper to get type size from nir_alu_type.

Signed-off-by: Iago Toral Quiroga <itoral@igalia.com>
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Tested-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

src/compiler/nir/nir_search.c

@@ -257,7 +257,7 @@ construct_value(const nir_search_value *value, nir_alu_type type,
          num_components = nir_op_infos[expr->opcode].output_size;
 
       nir_alu_instr *alu = nir_alu_instr_create(mem_ctx, expr->opcode);
-      nir_ssa_dest_init(&alu->instr, &alu->dest.dest, num_components, NULL);
+      nir_ssa_dest_init(&alu->instr, &alu->dest.dest, num_components, 32, NULL);
       alu->dest.write_mask = (1 << num_components) - 1;
       alu->dest.saturate = false;
 
@@ -359,7 +359,8 @@ nir_replace_instr(nir_alu_instr *instr, const nir_search_expression *search,
    nir_alu_instr *mov = nir_alu_instr_create(mem_ctx, nir_op_imov);
    mov->dest.write_mask = instr->dest.write_mask;
    nir_ssa_dest_init(&mov->instr, &mov->dest.dest,
-                     instr->dest.dest.ssa.num_components, NULL);
+                     instr->dest.dest.ssa.num_components,
+                     instr->dest.dest.ssa.bit_size, NULL);
 
    mov->src[0] = construct_value(replace, nir_op_infos[instr->op].output_type,
                                  instr->dest.dest.ssa.num_components, &state,