Remove lstm_op including in gru_op

Author: guoshengCS

paddle/operators/gru_op.h

@@ -14,7 +14,6 @@
 
 #pragma once
 
-#include "paddle/operators/lstm_op.h"
 #include "paddle/operators/math/gru_compute.h"
 #include "paddle/operators/math/math_function.h"
 #include "paddle/operators/math/sequence2batch.h"
@@ -25,6 +24,18 @@
 namespace paddle {
 namespace operators {
 
+using LoDTensor = framework::LoDTensor;
+using Tensor = framework::Tensor;
+
+template <typename Place, typename T>
+inline void ReorderInitState(const platform::DeviceContext& ctx,
+                             const framework::Tensor& src, const size_t* index,
+                             framework::Tensor* dst, bool indexed_src) {
+  math::CopyMatrixRowsFunctor<Place, T> row_shuffle;
+  dst->mutable_data<T>(src.dims(), ctx.GetPlace());
+  row_shuffle(ctx, src, index, *dst, indexed_src);
+}
+
 template <typename Place, typename T>
 class GRUKernel : public framework::OpKernel<T> {
  public:
@@ -194,16 +205,9 @@ class GRUGradKernel : public framework::OpKernel<T> {
           batch_reset_hidden_prev_grad.Slice(bstart, bend);
       gru_grad.resetOutputGrad = reset_hidden_prev_grad_t.data<T>();
       if (n == 0) {
-        if (h0) {
-          gru_value.prevOutValue = ordered_h0.data<T>();
-        } else {
-          gru_value.prevOutValue = nullptr;
-        }
-        if (h0 && h0_grad) {
-          gru_grad.prevOutGrad = ordered_h0_grad.data<T>();
-        } else {
-          gru_grad.prevOutGrad = nullptr;
-        }
+        gru_value.prevOutValue = h0 ? ordered_h0.data<T>() : nullptr;
+        gru_grad.prevOutGrad =
+            h0 && h0_grad ? ordered_h0_grad.data<T>() : nullptr;
       } else {
         int bstart_pre = static_cast<int>(batch_starts[n - 1]);
         Tensor hidden_prev_t = batch_hidden->Slice(bstart_pre, bstart);