Remove unnecesary class member.

src/ngraph/op/fused/lstm_cell.cpp

@@ -125,10 +125,11 @@ op::LSTMCell::LSTMCell(const shared_ptr<Node>& X,
                                           Shape{m_gates_count * get_hidden_size()},
                                           vector<float>(m_gates_count * get_hidden_size(), 0.f));
 
-    m_P = ngraph::op::Constant::create(element::f32,
-                                       Shape{m_peepholes_count * get_hidden_size()},
-                                       vector<float>(m_peepholes_count * get_hidden_size(), 0.f));
-    m_p_iof = builder::split(m_P, m_peepholes_count);
+    const auto& peephole_weights =
+        ngraph::op::Constant::create(element::f32,
+                                     Shape{m_peepholes_count * get_hidden_size()},
+                                     vector<float>(m_peepholes_count * get_hidden_size(), 0.f));
+    m_p_iof = builder::split(peephole_weights, m_peepholes_count);
     constructor_validate_and_infer_types();
 }
 
@@ -152,7 +153,6 @@ op::LSTMCell::LSTMCell(const shared_ptr<Node>& X,
     , m_R{R}
     , m_H_t{H_t}
     , m_C_t{C_t}
-    , m_P{P}
     , m_activation_f{get_activation_function(0)}
     , m_activation_g{get_activation_function(1)}
     , m_activation_h{get_activation_function(2)}
@@ -174,15 +174,16 @@ op::LSTMCell::LSTMCell(const shared_ptr<Node>& X,
         m_bias = b_W_R.at(0) + b_W_R.at(1);
     }
 
-    if (!m_P)
+    auto peephole_weights = P;
+    if (!peephole_weights)
     {
-        m_P =
+        peephole_weights =
             ngraph::op::Constant::create(element::f32,
                                          Shape{m_peepholes_count * get_hidden_size()},
                                          vector<float>(m_peepholes_count * get_hidden_size(), 0.f));
     }
 
-    m_p_iof = builder::split(m_P, m_peepholes_count);
+    m_p_iof = builder::split(peephole_weights, m_peepholes_count);
     constructor_validate_and_infer_types();
 }
 

src/ngraph/op/fused/lstm_cell.hpp

@@ -164,11 +164,6 @@ namespace ngraph
             ///
             std::shared_ptr<Node> m_C_t;
             ///
-            /// \brief      The weight tensor for peepholes with shape: [3*hidde_size] - 3 equals to
-            ///             only iof gates.
-            ///
-            std::shared_ptr<Node> m_P;
-            ///
             /// \brief The Activation function f.
             ///
             ActivationFunction m_activation_f;
@@ -190,6 +185,8 @@ namespace ngraph
             ///
             /// \brief Peephole weights vector for respectively: input, output, and forget gates.
             ///
+            /// Each peephole has shape [hidden_size].
+            ///
             NodeVector m_p_iof;
             ///
             /// \brief Sum of biases (weight and recurrence) for input, output, forget, and cell gates.