--- a/hotspot/src/share/vm/oops/metadata.hpp	Sat Apr 08 02:40:47 2017 +0000
+++ b/hotspot/src/share/vm/oops/metadata.hpp	Tue Apr 11 11:34:20 2017 -0700
@@ -47,6 +47,7 @@
   virtual bool is_method()             const volatile { return false; }
   virtual bool is_methodData()         const volatile { return false; }
   virtual bool is_constantPool()       const volatile { return false; }
+  virtual bool is_methodCounters()     const volatile { return false; }
 
   virtual const char* internal_name()  const = 0;
 

--- a/hotspot/src/share/vm/oops/methodCounters.cpp	Sat Apr 08 02:40:47 2017 +0000
+++ b/hotspot/src/share/vm/oops/methodCounters.cpp	Tue Apr 11 11:34:20 2017 -0700
@@ -73,3 +73,11 @@
 #endif
 }
 
+
+void MethodCounters::print_value_on(outputStream* st) const {
+  assert(is_methodCounters(), "must be methodCounters");
+  st->print("method counters");
+  print_address_on(st);
+}
+
+

--- a/hotspot/src/share/vm/oops/methodCounters.hpp	Sat Apr 08 02:40:47 2017 +0000
+++ b/hotspot/src/share/vm/oops/methodCounters.hpp	Tue Apr 11 11:34:20 2017 -0700
@@ -30,7 +30,7 @@
 #include "interpreter/invocationCounter.hpp"
 #include "runtime/arguments.hpp"
 
-class MethodCounters: public MetaspaceObj {
+class MethodCounters : public Metadata {
  friend class VMStructs;
  friend class JVMCIVMStructs;
  private:
@@ -109,10 +109,11 @@
   }
 
  public:
+  virtual bool is_methodCounters() const volatile { return true; }
+
   static MethodCounters* allocate(methodHandle mh, TRAPS);
 
   void deallocate_contents(ClassLoaderData* loader_data) {}
-  DEBUG_ONLY(bool on_stack() { return false; })  // for template
 
   AOT_ONLY(Method* method() const { return _method; })
 
@@ -120,8 +121,6 @@
     return align_size_up(sizeof(MethodCounters), wordSize) / wordSize;
   }
 
-  bool is_klass() const { return false; }
-
   void clear_counters();
 
 #if defined(COMPILER2) || INCLUDE_JVMCI
@@ -253,5 +252,9 @@
   static ByteSize backedge_mask_offset() {
     return byte_offset_of(MethodCounters, _backedge_mask);
   }
+
+  virtual const char* internal_name() const { return "{method counters}"; }
+  virtual void print_value_on(outputStream* st) const;
+
 };
 #endif //SHARE_VM_OOPS_METHODCOUNTERS_HPP