Generate specialized constructor code for constructing simple objects

src/objects.h

Index: src/objects.h
===================================================================
--- src/objects.h	(revision 2752)
+++ src/objects.h	(working copy)
@@ -3108,6 +3108,9 @@
       bool has_only_simple_this_property_assignments,
       FixedArray* this_property_assignments);
 
+  // Clear information on assignments of the form this.x = ...;
+  void ClearThisPropertyAssignmentsInfo();
+
   // Indicate that this function only consists of assignments of the form
   // this.x = ...;.
   inline bool has_only_this_property_assignments();
@@ -3122,6 +3125,9 @@
   inline int this_property_assignments_count();
   inline void set_this_property_assignments_count(int value);
   String* GetThisPropertyAssignmentName(int index);
+  bool IsThisPropertyAssignmentArgument(int index);
+  int GetThisPropertyAssignmentArgument(int index);
+  Object* GetThisPropertyAssignmentConstant(int index);
 
   // [source code]: Source code for the function.
   bool HasSourceCode();