--- old/src/share/vm/opto/mathexactnode.hpp	2016-07-03 23:43:00.990506298 +0900
+++ new/src/share/vm/opto/mathexactnode.hpp	2016-07-03 23:43:00.854506863 +0900
@@ -72,7 +72,7 @@
   typedef AddINode MathOp;
 
   OverflowAddINode(Node* in1, Node* in2) : OverflowINode(in1, in2) {}
-  virtual int Opcode() const;
+  virtual uint Opcode() const;
 
   virtual bool will_overflow(jint v1, jint v2) const;
   virtual bool can_overflow(const Type* t1, const Type* t2) const;
@@ -83,7 +83,7 @@
   typedef SubINode MathOp;
 
   OverflowSubINode(Node* in1, Node* in2) : OverflowINode(in1, in2) {}
-  virtual int Opcode() const;
+  virtual uint Opcode() const;
 
   virtual bool will_overflow(jint v1, jint v2) const;
   virtual bool can_overflow(const Type* t1, const Type* t2) const;
@@ -94,7 +94,7 @@
   typedef MulINode MathOp;
 
   OverflowMulINode(Node* in1, Node* in2) : OverflowINode(in1, in2) {}
-  virtual int Opcode() const;
+  virtual uint Opcode() const;
 
   virtual bool will_overflow(jint v1, jint v2) const;
   virtual bool can_overflow(const Type* t1, const Type* t2) const;
@@ -105,7 +105,7 @@
   typedef AddLNode MathOp;
 
   OverflowAddLNode(Node* in1, Node* in2) : OverflowLNode(in1, in2) {}
-  virtual int Opcode() const;
+  virtual uint Opcode() const;
 
   virtual bool will_overflow(jlong v1, jlong v2) const;
   virtual bool can_overflow(const Type* t1, const Type* t2) const;
@@ -116,7 +116,7 @@
   typedef SubLNode MathOp;
 
   OverflowSubLNode(Node* in1, Node* in2) : OverflowLNode(in1, in2) {}
-  virtual int Opcode() const;
+  virtual uint Opcode() const;
 
   virtual bool will_overflow(jlong v1, jlong v2) const;
   virtual bool can_overflow(const Type* t1, const Type* t2) const;
@@ -127,7 +127,7 @@
   typedef MulLNode MathOp;
 
   OverflowMulLNode(Node* in1, Node* in2) : OverflowLNode(in1, in2) {}
-  virtual int Opcode() const;
+  virtual uint Opcode() const;
 
   virtual bool will_overflow(jlong v1, jlong v2) const;
   virtual bool can_overflow(const Type* t1, const Type* t2) const;