Function CopyVar

test/cpp/imperative/test_gradient_accmulator.cc:260–277

}

static void CopyVar(const framework::Variable& var,
                    framework::Variable* dst_ptr) {
  auto& dst = *dst_ptr;
  dst.Clear();
  if (var.IsType<phi::DenseTensor>()) {
    const auto& src_tensor = var.Get<phi::DenseTensor>();
    auto* dst_tensor = dst.GetMutable<phi::DenseTensor>();
    framework::TensorCopySync(src_tensor, src_tensor.place(), dst_tensor);
  } else {
    const auto& src_selected_rows = var.Get<phi::SelectedRows>();
    auto* dst_selected_rows = dst.GetMutable<phi::SelectedRows>();
    dst_selected_rows->set_rows(src_selected_rows.rows());
    dst_selected_rows->set_height(src_selected_rows.height());
    framework::TensorCopySync(src_selected_rows.value(),
                              src_selected_rows.value().place(),
                              dst_selected_rows->mutable_value());
  }
}

static bool IsEqualVar(const framework::Variable& var1,
                       const framework::Variable& var2) {