code: def local_alloc_dimshuffle(node):
      """
      If a dimshuffle is inside an alloc and only adds dimension to the
      left, remove it.
  
      Alloc(DimShuffle(x), ...) - > Alloc(x, ...)
      """
      if isinstance(node.op, T.Alloc):
          input_ = node.inputs[0]
          if input_.owner and isinstance(input_.owner.op, DimShuffle):
              # check if it only adds dimension to the left
              new_order = input_.owner.op.new_order
              expected_new_order = ("x",) * (
                  input_.ndim - input_.owner.inputs[0].ndim
              ) + tuple(range(input_.owner.inputs[0].ndim))
              if new_order != expected_new_order:
                  return False
              return [T.alloc(input_.owner.inputs[0], *node.inputs[1:])]
      return False
  
file_path: Theano/theano/tensor/opt_uncanonicalize.py
imports: from __future__ import absolute_import, print_function, division
  import logging
  from theano import gof
  from theano.tensor.elemwise import CAReduce
  from theano.tensor import basic
  from theano.tensor import DimShuffle, Subtensor
  from theano.tensor.opt import register_uncanonicalize
  from theano import scalar
  from theano.gof.opt import copy_stack_trace
label_desc: Use image node_id 3 for calling a global function with example usage: local_alloc_dimshuffle(node) and returns: False, list, False