Improved c1visualizer output a bit: Emit a human-readable description for

src/hydrogen-instructions.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 610 matching lines @@
   // instruction with a new one, first add the new instruction to the graph,
   // then return it.  Return NULL to have the instruction deleted.
   virtual HValue* Canonicalize() { return this; }
 
   bool Equals(HValue* other);
   virtual intptr_t Hashcode();
 
   // Printing support.
   virtual void PrintTo(StringStream* stream) = 0;
   void PrintNameTo(StringStream* stream);
-  static void PrintTypeTo(HType type, StringStream* stream);
+  void PrintTypeTo(StringStream* stream);
+  void PrintRangeTo(StringStream* stream);
+  void PrintChangesTo(StringStream* stream);
 
   const char* Mnemonic() const;
 
   // Updated the inferred type of this instruction and returns true if
   // it has changed.
   bool UpdateInferredType();
 
   virtual HType CalculateInferredType();
 
 #ifdef DEBUG
@@ skipping 92 matching lines @@
   }
 
   virtual void DeleteFromGraph() { Unlink(); }
 
  private:
   void InitializeAsFirst(HBasicBlock* block) {
     ASSERT(!IsLinked());
     SetBlock(block);
   }
 
+  void PrintMnemonicTo(StringStream* stream);
+
   HInstruction* next_;
   HInstruction* previous_;
   int position_;
 
   friend class HBasicBlock;
 };
 
 
 class HControlInstruction: public HInstruction {
  public:
@@ skipping 3085 matching lines @@
 
   DECLARE_CONCRETE_INSTRUCTION(In)
 };
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_