Method forward_from

tensorflow/core/common_runtime/graph_view.h:149–149

Return array of expected input index from which each output should be forwarded: kNeverForward (-2) for DO NOT FORWARD (must allocate). kNoReservation (-1) for no expected forwarding. 0... for forward from that input.

  // kNoReservation (-1) for no expected forwarding.
  // 0... for forward from that input.
  const int* forward_from() const { return forward_from_base(); }

  string DebugString() const;