Implement non-generic stores for object literals.

src/ast.h

Index: src/ast.h
diff --git a/src/ast.h b/src/ast.h
index 09864885e93e486b323b5d07bdc607a0256aae5a..78531bb4553f322e32f0d7c96708023be2189d0e 100644
--- a/src/ast.h
+++ b/src/ast.h
@@ -1320,6 +1320,11 @@ class ObjectLiteral: public MaterializedLiteral {
     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);
@@ -1336,6 +1341,8 @@ class ObjectLiteral: public MaterializedLiteral {
     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)