diff -r b046ba510bbc -r b398685dd029 src/hotspot/share/gc/shared/c2/barrierSetC2.hpp
--- a/src/hotspot/share/gc/shared/c2/barrierSetC2.hpp	Tue Nov 12 01:36:17 2019 -0800
+++ b/src/hotspot/share/gc/shared/c2/barrierSetC2.hpp	Tue Nov 12 09:25:39 2019 +0000
@@ -103,6 +103,7 @@
   Node*             _base;
   C2AccessValuePtr& _addr;
   Node*             _raw_access;
+  uint8_t           _barrier_data;
 
   void fixup_decorators();
 
@@ -113,7 +114,8 @@
     _type(type),
     _base(base),
     _addr(addr),
-    _raw_access(NULL)
+    _raw_access(NULL),
+    _barrier_data(0)
   {}
 
   DecoratorSet decorators() const { return _decorators; }
@@ -124,6 +126,9 @@
   bool is_raw() const             { return (_decorators & AS_RAW) != 0; }
   Node* raw_access() const        { return _raw_access; }
 
+  uint8_t barrier_data() const        { return _barrier_data; }
+  void set_barrier_data(uint8_t data) { _barrier_data = data; }
+
   void set_raw_access(Node* raw_access) { _raw_access = raw_access; }
   virtual void set_memory() {} // no-op for normal accesses, but not for atomic accesses.