Store member shared_ptrs as object.

src/ngraph/frontend/onnx_import/op/lstm.cpp

@@ -230,7 +230,7 @@ namespace ngraph
                 class LSTMForward
                 {
                 public:
-                    explicit LSTMForward(std::shared_ptr<ngraph::Node> X,
+                    explicit LSTMForward(const std::shared_ptr<ngraph::Node>& X,
                                          const std::shared_ptr<ngraph::Node>& W,
                                          const std::shared_ptr<ngraph::Node>& R,
                                          const std::shared_ptr<ngraph::Node>& B,
@@ -417,13 +417,13 @@ namespace ngraph
                     }
 
                     std::shared_ptr<ngraph::Node> m_X;
-                    const std::shared_ptr<ngraph::Node>& m_W;
-                    const std::shared_ptr<ngraph::Node>& m_R;
-                    const std::shared_ptr<ngraph::Node>& m_B;
-                    const std::shared_ptr<ngraph::Node>& m_P;
-                    const std::shared_ptr<ngraph::Node>& m_initial_h;
-                    const std::shared_ptr<ngraph::Node>& m_initial_c;
-                    const std::shared_ptr<ngraph::Node>& m_seq_lengths;
+                    std::shared_ptr<ngraph::Node> m_W;
+                    std::shared_ptr<ngraph::Node> m_R;
+                    std::shared_ptr<ngraph::Node> m_B;
+                    std::shared_ptr<ngraph::Node> m_P;
+                    std::shared_ptr<ngraph::Node> m_initial_h;
+                    std::shared_ptr<ngraph::Node> m_initial_c;
+                    std::shared_ptr<ngraph::Node> m_seq_lengths;
                     const LSTMAttributes& m_attributes;
                 };
 

src/ngraph/op/fused/lstm_cell.hpp

@@ -146,23 +146,23 @@ namespace ngraph
             ///
             /// \brief      The input data tensor. Shape: [batch_size, input_size].
             ///
-            const std::shared_ptr<Node>& m_X;
+            std::shared_ptr<Node> m_X;
             ///
             /// \brief      The weight tensor. Shape: [4*hidden_size, input_size].
             ///
-            const std::shared_ptr<Node>& m_W;
+            std::shared_ptr<Node> m_W;
             ///
             /// \brief      The recurrence weight tensor. Shape: [4*hidden_size, hidden_size].
             ///
-            const std::shared_ptr<Node>& m_R;
+            std::shared_ptr<Node> m_R;
             ///
             /// \brief      The hidden state tensor at current time step. Shape: [batch_size, hidden_size].
             ///
-            const std::shared_ptr<Node>& m_H_t;
+            std::shared_ptr<Node> m_H_t;
             ///
             /// \brief      The cell state tensor at current time step. Shape: [batch_size, hidden_size].
             ///
-            const std::shared_ptr<Node>& m_C_t;
+            std::shared_ptr<Node> m_C_t;
             ///
             /// \brief      The weight tensor for peepholes with shape: [3*hidde_size] - 3 equals to
             ///             only iof gates.