avoid reusing non-tensor in memery_optimize_pass (#3111)

lite/core/mir/memory_optimize_pass.cc

@@ -78,6 +78,7 @@ void MemoryOptimizePass::CollectLifeCycleByDevice(
   // Collect the invalid input and output variables that will not be reused.
   std::unordered_set<std::string> invalid_var_names;
   for (auto& op_node : graph->StmtTopologicalOrder()) {
+    // variables of invalid_op_nodes wil not be reused
     if (!op_node->IsStmt()) continue;
     auto op_info = op_node->AsStmt().op_info();
     auto op_type = op_info->Type();
@@ -120,6 +121,13 @@ void MemoryOptimizePass::CollectLifeCycleByDevice(
     }
   }
 
+  // non-tensor(like tensor_array) variables will not be reused
+  for (auto& node : graph->nodes()) {
+    if (node.IsArg() && !node.arg()->type->IsTensor()) {
+      invalid_var_names.insert(node.arg()->name);
+    }
+  }
+
   for (auto& op_node : graph->StmtTopologicalOrder()) {
     if (op_node->IsStmt()) {
       std::vector<Node*> var_nodes(op_node->inlinks.begin(),

lite/kernels/arm/elementwise_compute.cc

@@ -182,30 +182,30 @@ void ElementwiseSubActivationCompute::Run() {
 template <typename T, PrecisionType PType>
 void ElementwiseMulCompute<T, PType>::Run() {
   auto& param = this->template Param<operators::ElementwiseParam>();
-  if (param.X->precision() == PRECISION(kFloat)) {
-    auto* x_data = param.X->template data<float>();
-    auto* y_data = param.Y->template data<float>();
-    auto* out_data = param.Out->template mutable_data<float>();
+  auto* x_data = param.X->template data<T>();
+  auto* y_data = param.Y->template data<T>();
+  auto* out_data = param.Out->template mutable_data<T>();
   int axis = param.axis;
   auto x_dims = param.X->dims();
   auto y_dims = param.Y->dims();
   int pre, n, post;
   if (x_dims.size() < y_dims.size() &&
       is_broadcast(y_dims, x_dims, axis, &pre, &n, &post)) {
-      lite::arm::math::elementwise_mul_broadcast<float>(
+    lite::arm::math::elementwise_mul_broadcast<T>(
         y_data, x_data, out_data, pre, n, post);
   } else if (is_broadcast(x_dims, y_dims, axis, &pre, &n, &post)) {
-      lite::arm::math::elementwise_mul_broadcast<float>(
+    lite::arm::math::elementwise_mul_broadcast<T>(
         x_data, y_data, out_data, pre, n, post);
   } else {
-      lite::arm::math::elementwise_mul<float>(
+    lite::arm::math::elementwise_mul<T>(
         x_data, y_data, out_data, x_dims.production());
   }
-  } else if (param.X->precision() == PRECISION(kInt64)) {
+}
+
+template <>
+void ElementwiseMulCompute<int64_t, PRECISION(kInt64)>::Run() {
+  auto& param = this->template Param<operators::ElementwiseParam>();
   lite::arm::math::elementwise_compute_basic<int64_t>(param, "mul", "");
-  } else {
-    LOG(FATAL) << "unsupport input type";
-  }
 }
 
 void ElementwiseMulActivationCompute::Run() {
@@ -420,6 +420,16 @@ REGISTER_LITE_KERNEL(
     .BindOutput("Out", {LiteType::GetTensorTy(TARGET(kARM), PRECISION(kInt32))})
     .Finalize();
 
+using elementwise_mul_int64 =
+    paddle::lite::kernels::arm::ElementwiseMulCompute<int64_t,
+                                                      PRECISION(kInt64)>;
+REGISTER_LITE_KERNEL(
+    elementwise_mul, kARM, kInt64, kNCHW, elementwise_mul_int64, def)
+    .BindInput("X", {LiteType::GetTensorTy(TARGET(kARM), PRECISION(kInt64))})
+    .BindInput("Y", {LiteType::GetTensorTy(TARGET(kARM), PRECISION(kInt64))})
+    .BindOutput("Out", {LiteType::GetTensorTy(TARGET(kARM), PRECISION(kInt64))})
+    .Finalize();
+
 REGISTER_LITE_KERNEL(
     fusion_elementwise_mul_activation,
     kARM,

lite/operators/op_params.h

@@ -730,15 +730,15 @@ struct IncrementParam {
 };
 
 struct WriteToArrayParam {
-  const lite::Tensor* X{};
-  const lite::Tensor* I{};
-  std::vector<lite::Tensor>* Out{};
+  const lite::Tensor* X{nullptr};
+  const lite::Tensor* I{nullptr};
+  std::vector<lite::Tensor>* Out{nullptr};
 };
 
 struct ReadFromArrayParam {
-  const std::vector<lite::Tensor>* X{};
-  const lite::Tensor* I{};
-  lite::Tensor* Out{};
+  const std::vector<lite::Tensor>* X{nullptr};
+  const lite::Tensor* I{nullptr};
+  lite::Tensor* Out{nullptr};
 };
 
 struct BeamSearchParam {