Implement non-generic stores for object literals.

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 1302 matching lines @@
       GETTER, SETTER,        // Property is an accessor function.
       PROTOTYPE              // Property is __proto__.
     };
 
     Property(Literal* key, Expression* value, Isolate* isolate);
 
     Literal* key() { return key_; }
     Expression* value() { return value_; }
     Kind kind() { return kind_; }
 
+    // Type feedback information.
+    void RecordTypeFeedback(TypeFeedbackOracle* oracle);
+    bool IsMonomorphic() { return is_monomorphic_; }
+    Handle<Map> GetReceiverType() { return receiver_type_; }
+
     bool IsCompileTimeValue();
 
     void set_emit_store(bool emit_store);
     bool emit_store();
 
    protected:
     template<class> friend class AstNodeFactory;
 
     Property(bool is_getter, FunctionLiteral* value);
     void set_key(Literal* key) { key_ = key; }
 
    private:
     Literal* key_;
     Expression* value_;
     Kind kind_;
     bool emit_store_;
+    bool is_monomorphic_;

[Sven Panne, 2012/03/13 09:46:00]

I don't think we need this member, because is_monomorphic == true iff
receiver_type contains something non-nullish.

+    Handle<Map> receiver_type_;
   };
 
   DECLARE_NODE_TYPE(ObjectLiteral)
 
   Handle<FixedArray> constant_properties() const {
     return constant_properties_;
   }
   ZoneList<Property*>* properties() const { return properties_; }
 
   bool fast_elements() const { return fast_elements_; }
@@ skipping 1611 matching lines @@
  private:
   Isolate* isolate_;
   Zone* zone_;
   Visitor visitor_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_