Supporting AllocationSiteInfo for Nested arrays

src/objects.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 1595 matching lines @@
   inline bool HasExternalShortElements();
   inline bool HasExternalUnsignedShortElements();
   inline bool HasExternalIntElements();
   inline bool HasExternalUnsignedIntElements();
   inline bool HasExternalFloatElements();
   inline bool HasExternalDoubleElements();
   bool HasFastArgumentsElements();
   bool HasDictionaryArgumentsElements();
   inline SeededNumberDictionary* element_dictionary();  // Gets slow elements.
 
+  inline bool ShouldTrackAllocationInfo();
+
   inline void set_map_and_elements(
       Map* map,
       FixedArrayBase* value,
       WriteBarrierMode mode = UPDATE_WRITE_BARRIER);
 
   // Requires: HasFastElements().
   MUST_USE_RESULT inline MaybeObject* EnsureWritableFastElements();
 
   // Collects elements starting at index 0.
   // Undefined values are placed after non-undefined values.
@@ skipping 6651 matching lines @@
   // Set the content of the array to the content of storage.
   MUST_USE_RESULT inline MaybeObject* SetContent(FixedArrayBase* storage);
 
   // Casting.
   static inline JSArray* cast(Object* obj);
 
   // Uses handles.  Ensures that the fixed array backing the JSArray has at
   // least the stated size.
   inline void EnsureSize(int minimum_size_of_backing_fixed_array);
 
+  inline bool ShouldTrackAllocationInfo();

[danno, 2013/02/11 15:05:21]

See previous comments, I think this method is superfluous.

+
   // Dispatched behavior.
   DECLARE_PRINTER(JSArray)
   DECLARE_VERIFIER(JSArray)
 
   // Number of element slots to pre-allocate for an empty array.
   static const int kPreallocatedArrayElements = 4;
 
   // Layout description.
   static const int kLengthOffset = JSObject::kHeaderSize;
   static const int kSize = kLengthOffset + kPointerSize;
@@ skipping 588 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_