!9144 fix remove cast internal node error

From: @kisnwang
Reviewed-by: @limingqi107,@chujinjin
Signed-off-by: @chujinjin

mindspore/ccsrc/backend/optimizer/ascend/format_type/remove_internal_output.cc

@@ -54,6 +54,9 @@ const AnfNodePtr RemoveInternalOutput::Process(const FuncGraphPtr &func_graph, c
                                                const EquivPtr &) const {
   MS_EXCEPTION_IF_NULL(func_graph);
   MS_EXCEPTION_IF_NULL(node);
+  if (AnfAlgo::CheckPrimitiveType(node, prim::kPrimCast) && !AnfAlgo::GetBooleanAttr(node, kIsBackendCast)) {
+    return nullptr;
+  }
   auto kernel_graph = func_graph->cast<KernelGraphPtr>();
   if (kernel_graph == nullptr) {
     return nullptr;

mindspore/ccsrc/backend/session/executor.cc

@@ -106,12 +106,14 @@ void BuildGraphTask::Run() {
 void RunGraphTask::Run() {
   MS_EXCEPTION_IF_NULL(session_);
   try {
+    MS_LOG(INFO) << "Start run graph " << graph_id_;
     auto graph = session_->GetGraph(graph_id_);
     MS_EXCEPTION_IF_NULL(graph);
     graph->ResetGraphRunningStatus();
     session_->RunGraphImpl(graph_id_, input_tensors_, &outputs_);
     graph->OnRunGraphFinished();
     UpdateOutputTensors(&outputs_, tensor_to_node_);
+    MS_LOG(INFO) << "End run graph " << graph_id_;
   } catch (const std::exception &e) {
     MsException::GetInstance().SetException();
   }

mindspore/ccsrc/vm/backend.cc

@@ -76,6 +76,7 @@ LinConvertResult MsBackend::MsConvert(const GraphSegmentPtr &segment, const std:
     MS_EXCEPTION_IF_NULL(pre_graph);
     pre_graph->AddPostGraph(graph);
     graph->AddPreGraph(pre_graph);
+    MS_LOG(INFO) << "Link graph " << pre_segment->graph_id_ << " to " << graph_id;
   }
 
   if (MsContext::GetInstance()->get_param<bool>(MS_CTX_PRECOMPILE_ONLY)) {