update template

Author: dboyliao

utensor_cgen/backend/utensor/snippets/rearch/_snippets.py

@@ -243,6 +243,9 @@ def __init__(self, op_info, tensor_var_map):
       quant_params = self.get_quant_param(out_tensor)
       quant_params_map[out_tensor.name] = quant_params
     self.template_vars['op_type'] = op_info.op_type
+    self.template_vars['input_var_names'] = [
+      tensor_var_map[tensor.name] for tensor in op_info.input_tensors
+    ]
     self.template_vars['input_tensors'] = op_info.input_tensors[:]
     self.template_vars['out_var_names'] = [
       tensor_var_map[tensor.name] for tensor in op_info.output_tensors

utensor_cgen/backend/utensor/snippets/templates/snippets/rearch/op_missing.cpp

@@ -2,8 +2,8 @@
     FIXME: {{op_type}} currently not supported, you have to fill up this section or it won't compile
 
     Input Tensors:
-    {%for tensor in input_tensors%}
-        - {{tensor.name}}, of type {{tensor.dtype}}
+    {%for tensor, var_name in zip(input_tensors, input_var_names)%}
+        - {{tensor.name}}, of type {{tensor.dtype}} and is named as {{var_name}} in this file
     {%endfor%}
 
     Output Tensors: