[heap] Reland decrease large object limit for regular heap objects.

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 10075 matching lines @@
   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;
 
-  // Note that Page::kMaxRegularHeapObjectSize puts a limit on
-  // permissible values (see the DCHECK in heap.cc).
-  static const int kInitialMaxFastElementArray = 100000;
+  // 600 * KB is the Page::kMaxRegularHeapObjectSize defined in spaces.h which
+  // we do not want to include in objects.h
+  // Note that Page::kMaxRegularHeapObjectSize has to be in sync with
+  // kInitialMaxFastElementArray which is checked in a DCHECK in heap.cc.
+  static const int kInitialMaxFastElementArray =
+      (600 * KB - FixedArray::kHeaderSize - kSize - AllocationMemento::kSize) /
+      kPointerSize;
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSArray);
 };
 
 
 Handle<Object> CacheInitialJSArrayMaps(Handle<Context> native_context,
                                        Handle<Map> initial_map);
 
 
@@ skipping 616 matching lines @@
   Handle<FixedArray> keys_;
   Handle<OrderedHashSet> set_;
   int length_;
   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_