[turbofan] Implement the implicit ToObject for property access.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 5500 matching lines @@
   inline void set_inobject_properties_or_constructor_function_index(int value);
   // Count of properties allocated in the object (JSObject only).
   inline int GetInObjectProperties();
   inline void SetInObjectProperties(int value);
   // Index of the constructor function in the native context (primitives only),
   // or the special sentinel value to indicate that there is no object wrapper
   // for the primitive (i.e. in case of null or undefined).
   static const int kNoConstructorFunctionIndex = 0;
   inline int GetConstructorFunctionIndex();
   inline void SetConstructorFunctionIndex(int value);
+  static MaybeHandle<JSFunction> GetConstructorFunction(
+      Handle<Map> map, Handle<Context> native_context);
 
   // Instance type.
   inline InstanceType instance_type();
   inline void set_instance_type(InstanceType value);
 
   // Tells how many unused property fields are available in the
   // instance (only used for JSObject in fast mode).
   inline int unused_property_fields();
   inline void set_unused_property_fields(int value);
 
@@ skipping 5307 matching lines @@
   // (elements + properties) in the current level.
   int levelLength_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(KeyAccumulator);
 };
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_