--- old/src/share/vm/opto/matcher.hpp	2021-04-28 19:35:14.795377613 +0800
+++ new/src/share/vm/opto/matcher.hpp	2021-04-28 19:35:14.677372973 +0800
@@ -123,6 +123,7 @@
 
   // Mach node for ConP #NULL
   MachNode* _mach_null;
+  void handle_precedence_edges(Node* n, MachNode *mach);
 
 public:
   int LabelRootDepth;