*** old/src/share/vm/opto/matcher.hpp	Wed Apr 22 20:27:28 2009
--- new/src/share/vm/opto/matcher.hpp	Wed Apr 22 20:27:28 2009

*** 218,231 ****
--- 218,237 ----
    OptoReg::Name _out_arg_limit;
  
    OptoRegPair *_parm_regs;        // Array of machine registers per argument
    RegMask *_calling_convention_mask; // Array of RegMasks per argument
  
!   // Does matcher support this ideal node?
!   // Does matcher have a match rule for this ideal node?
    static const bool has_match_rule(int opcode);
    static const bool _hasMatchRule[_last_opcode];
  
+   // Does matcher have a match rule for this ideal node and is the
+   // predicate (if there is one) true?
+   // NOTE: If this function is used more commonly in the future, ADLC
+   // should generate this one.
+   static const bool match_rule_supported(int opcode);
+ 
    // Used to determine if we have fast l2f conversion
    // USII has it, USIII doesn't
    static const bool convL2FSupported(void);
  
    // Vector width in bytes