Faster to number conversion

src/hydrogen.h

 // Copyright 2012 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 1100 matching lines @@
       Representation representation = Representation::Tagged());
 
   HStoreNamedField* AddStoreMapConstant(HValue *object, Handle<Map>);
 
   HLoadNamedField* AddLoadElements(HValue *object, HValue *typecheck = NULL);
 
   HLoadNamedField* AddLoadFixedArrayLength(HValue *object);
 
   HValue* AddLoadJSBuiltin(Builtins::JavaScript builtin, HValue* context);
 
+  HValue* TruncateToNumber(HValue* value, Handle<Type>* expected);
+
+  void PushAndAdd(HInstruction* instr);
+
   enum SoftDeoptimizeMode {
     MUST_EMIT_SOFT_DEOPT,
     CAN_OMIT_SOFT_DEOPT
   };
 
   void AddSoftDeoptimize(SoftDeoptimizeMode mode = CAN_OMIT_SOFT_DEOPT);
 
   class IfBuilder {
    public:
     explicit IfBuilder(HGraphBuilder* builder,
@@ skipping 528 matching lines @@
                        HBasicBlock* false_block);
 
   // Visit an argument subexpression and emit a push to the outgoing arguments.
   void VisitArgument(Expression* expr);
 
   void VisitArgumentList(ZoneList<Expression*>* arguments);
 
   // Visit a list of expressions from left to right, each in a value context.
   void VisitExpressions(ZoneList<Expression*>* exprs);
 
-  void PushAndAdd(HInstruction* instr);
-
   // Remove the arguments from the bailout environment and emit instructions
   // to push them as outgoing parameters.
   template <class Instruction> HInstruction* PreProcessCall(Instruction* call);
 
   void SetUpScope(Scope* scope);
   virtual void VisitStatements(ZoneList<Statement*>* statements);
 
 #define DECLARE_VISIT(type) virtual void Visit##type(type* node);
   AST_NODE_LIST(DECLARE_VISIT)
 #undef DECLARE_VISIT
@@ skipping 414 matching lines @@
   EmbeddedVector<char, 64> filename_;
   HeapStringAllocator string_allocator_;
   StringStream trace_;
   int indent_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_