!9944 fix control flow assign/transdata error

From: @youui
Reviewed-by: @zhoufeng54,@kisnwang
Signed-off-by: @kisnwang

mindspore/ccsrc/backend/session/ascend_control_parser.cc

@@ -37,6 +37,7 @@ static constexpr size_t kCNodeSwitchLayerBranch = 2;
 static constexpr size_t kCNodeSwitchLayerLength = 3;
 static constexpr size_t kCNodeAssignTarget = 1;
 static constexpr size_t kCNodeAssignSource = 2;
+static constexpr size_t kCNodeAssignDestination = 1;
 
 namespace mindspore {
 namespace session {
@@ -291,13 +292,15 @@ void AscendControlParser::EraseAssign(std::shared_ptr<ReferenceCounter> paramete
     }
     auto &assign_node = assign_iter->second;
     MS_EXCEPTION_IF_NULL(assign_node);
-    if (!IsPrimitiveCNode(assign_node, prim::kPrimAssign)) {
+    auto source = assign_node->input(kCNodeAssignSource);
+    auto destination = assign_node->input(kCNodeAssignDestination);
+    // not assign node or assign destination is transdata which for ref parameter(write 2 times) -> continue
+    if (!IsPrimitiveCNode(assign_node, prim::kPrimAssign) || IsPrimitiveCNode(destination, prim::KPrimTransData)) {
       parameter_count->EraseElem(para);
       continue;
     }
     MS_LOG(INFO) << "Erase " << assign_node->DebugString(5);
     EraseNodeFromExecOrder(assign_node, NOT_NULL(&exec_order));
-    auto source = assign_node->input(kCNodeAssignSource);
     MS_EXCEPTION_IF_NULL(source);
     auto visit_source = AnfAlgo::VisitKernelWithReturnType(source, 0).first;
     parameter_count->AddWriteCount(para, -1);