src/share/vm/code/pcDesc.hpp

*** 37,46 ****
--- 37,47 ----
    union PcDescFlags {
      int word;
      struct {
        unsigned int reexecute: 1;
      } bits;
+     operator ==(const PcDescFlags& other) { return word == other.word; }
    } _flags;
  
   public:
    int pc_offset() const           { return _pc_offset;   }
    int scope_decode_offset() const { return _scope_decode_offset; }
*** 62,71 ****
--- 63,79 ----
  
    // Flags
    bool     should_reexecute()              const { return _flags.bits.reexecute; }
    void set_should_reexecute(bool z)              { _flags.bits.reexecute = z;    }
  
+   // Does pd refer to the same information as pd?
+   bool is_same_info(const PcDesc* pd) {
+     return _scope_decode_offset == pd->_scope_decode_offset &&
+       _obj_decode_offset == pd->_obj_decode_offset &&
+       _flags == pd->_flags;
+   }
+ 
    // Returns the real pc
    address real_pc(const nmethod* code) const;
  
    void print(nmethod* code);
    bool verify(nmethod* code);