Track allocation info

src/ast.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 1557 matching lines @@
   ZoneList<Expression*>* arguments() const { return arguments_; }
   virtual int position() const { return pos_; }
 
   // Type feedback information.
   TypeFeedbackId CallNewFeedbackId() const { return reuse(id()); }
   void RecordTypeFeedback(TypeFeedbackOracle* oracle);
   virtual bool IsMonomorphic() { return is_monomorphic_; }
   Handle<JSFunction> target() { return target_; }
 
   BailoutId ReturnId() const { return return_id_; }
-
+  ElementsKind elements_kind() const { return elements_kind_; }
+  
  protected:
   CallNew(Isolate* isolate,
           Expression* expression,
           ZoneList<Expression*>* arguments,
           int pos)
       : Expression(isolate),
         expression_(expression),
         arguments_(arguments),
         pos_(pos),
         is_monomorphic_(false),
-        return_id_(GetNextId(isolate)) { }
+        return_id_(GetNextId(isolate)),
+        elements_kind_(GetInitialFastElementsKind()) { }
 
  private:
   Expression* expression_;
   ZoneList<Expression*>* arguments_;
   int pos_;
 
   bool is_monomorphic_;
   Handle<JSFunction> target_;
 
   const BailoutId return_id_;
+  ElementsKind elements_kind_;
 };
 
 
 // The CallRuntime class does not represent any official JavaScript
 // language construct. Instead it is used to call a C or JS function
 // with a set of arguments. This is used from the builtins that are
 // implemented in JavaScript (see "v8natives.js").
 class CallRuntime: public Expression {
  public:
   DECLARE_NODE_TYPE(CallRuntime)
@@ skipping 1293 matching lines @@
  private:
   Isolate* isolate_;
   Zone* zone_;
   Visitor visitor_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_