code: def test_merge_respects_aliasing(self):
      def fn(x, k, cond):
          y = x * 1.1
          y = y * k
          y = y * 2.2
          if bool(cond):
              z1 = y[0]
              z2 = y[1]
              z1.add_(3)
              out = z2 + k + 3.3
              out = out * out
              return out
  
      graph = self._perform_ad_subgraph_slicing(fn, [2, 2], [2, 2], 1)
      # z2 did did not get merged into the subgraph
      FileCheck().check("prim::If").check("aten::select").check_next(
          "aten::select"
      ).check_next("aten::add_").check("Differentiable").run(graph)
      self.assertGraphContainsExactly(
          graph, "prim::DifferentiableGraph", 2
      )
  
imports: import os
  import sys
  import unittest
  from torch.testing._internal.common_utils import GRAPH_EXECUTOR, ProfilingMode, num_profiled_runs, enable_profiling_mode_for_profiling_tests
  from torch.testing._internal.common_jit import check_against_reference
  import torch
  from torch.testing._internal.jit_utils import JitTestCase, disable_autodiff_subgraph_inlining
  from torch.testing import FileCheck
  from typing import List, Tuple, Optional
label_desc: Use image node_id 20 for calling the TestAutodiffSubgraphSlicing obj's underlying member method code with example usage: obj.test_merge_respects_aliasing() and returns: out