text: import taichi as ti
  
  
  def test_simple_array():
      ti.init(arch=ti.cpu, print_ir=True)
      ci1 = ti.type_factory_.get_custom_int_type(1, True)
  
      x = ti.field(dtype=ci1)
  
      ti.root._bit_array(ti.i, 32, num_bits=32).place(x)
  
      ti.get_runtime().print_snode_tree()
      ti.get_runtime().materialize()
      ti.get_runtime().print_snode_tree()
  
  
  def test_2D_array():
      ti.init(arch=ti.cpu, print_ir=True)
      ci1 = ti.type_factory_.get_custom_int_type(1, True)
  
      x = ti.field(dtype=ci1)
  
      ti.root._bit_array(ti.ij, (4, 8), num_bits=32).place(x)
  
      ti.get_runtime().print_snode_tree()
      ti.get_runtime().materialize()
      ti.get_runtime().print_snode_tree()
  
  
  test_2D_array()
  