message: Replace list concatenation with generators for auto control deps
diff: @@ -535,8 +535,10 @@ def _get_resource_inputs(op):
  # Note: A resource handle that is not written to is treated as read-only. We
  # don't have a special way of denoting an unused resource.
  - return ([(t, ResourceType.READ_ONLY) for t in reads] +
  - [(t, ResourceType.READ_WRITE) for t in writes])
  + for t in reads:
  + yield (t, ResourceType.READ_ONLY)
  + for t in writes:
  + yield (t, ResourceType.READ_WRITE)
  def automatic_control_dependencies(f):
  