code: def _test_f(x):
      return x * x
  
file_path: pytorch/test/inductor/test_smoke.py
imports: import logging
  import unittest
  import torch
  import torch._logging
  from torch.testing._internal.common_utils import IS_LINUX, TestCase
  from torch.testing._internal.inductor_utils import HAS_CUDA
label_desc: Use image node_id 1 for calling a global function with example usage: _test_f(x) and returns: unknown