--- a/src/hotspot/share/opto/node.hpp	Thu Oct 18 09:46:46 2018 -0700
+++ b/src/hotspot/share/opto/node.hpp	Thu Oct 18 21:14:49 2018 +0200
@@ -457,10 +457,9 @@
 
   // Strip away casting.  (It is depth-limited.)
   Node* uncast() const;
-  // Return whether two Nodes are equivalent, after stripping casting.
-  bool eqv_uncast(const Node* n) const {
-    return (this->uncast() == n->uncast());
-  }
+  // Return whether two Nodes are equivalent, after stripping casting
+  // and GC barriers.
+  bool eqv_uncast(const Node* n) const;
 
   // Find out of current node that matches opcode.
   Node* find_out_with(int opcode);