--- old/src/share/vm/opto/opcodes.hpp	2016-07-03 23:43:06.549483193 +0900
+++ new/src/share/vm/opto/opcodes.hpp	2016-07-03 23:43:06.412483763 +0900
@@ -27,7 +27,7 @@
 
 // Build a big enum of class names to give them dense integer indices
 #define macro(x) Op_##x,
-enum Opcodes {
+enum Opcodes : uint {
   Op_Node = 0,
   macro(Set)                    // Instruction selection match rule
   macro(RegN)                   // Machine narrow oop register