[elements] Precisely estimate elements size for large-object limits

src/objects.h

 // Copyright 2015 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/assert-scope.h"
@@ skipping 2629 matching lines @@
 
 // FixedArray describes fixed-sized arrays with element type Object*.
 class FixedArray: public FixedArrayBase {
  public:
   // Setter and getter for elements.
   inline Object* get(int index) const;
   static inline Handle<Object> get(FixedArray* array, int index,
                                    Isolate* isolate);
   // Setter that uses write barrier.
   inline void set(int index, Object* value);
-  inline bool is_the_hole(int index);
+  inline bool is_the_hole(Isolate* isolate, int index);
 
   // Setter that doesn't need write barrier.
   inline void set(int index, Smi* value);
   // Setter with explicit barrier mode.
   inline void set(int index, Object* value, WriteBarrierMode mode);
 
   // Setters for frequently used oddballs located in old space.
   inline void set_undefined(int index);
   inline void set_null(int index);
   inline void set_the_hole(int index);
@@ skipping 69 matching lines @@
  public:
   // Setter and getter for elements.
   inline double get_scalar(int index);
   inline uint64_t get_representation(int index);
   static inline Handle<Object> get(FixedDoubleArray* array, int index,
                                    Isolate* isolate);
   inline void set(int index, double value);
   inline void set_the_hole(int index);
 
   // Checking for the hole.
+  inline bool is_the_hole(Isolate* isolate, int index);
   inline bool is_the_hole(int index);
 
   // Garbage collection support.
   inline static int SizeFor(int length) {
     return kHeaderSize + length * kDoubleSize;
   }
 
   // Gives access to raw memory which stores the array's data.
   inline double* data_start();
 
@@ skipping 8041 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_