Reland "Keep track of array buffers in new space separately"

src/objects.cc

 // Copyright 2013 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.
 
 #include <iomanip>
 #include <sstream>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 16452 matching lines @@
           FixedToExternalElementsKind(map->elements_kind()));
 
   Handle<FixedTypedArrayBase> fixed_typed_array(
       FixedTypedArrayBase::cast(typed_array->elements()));
 
   Handle<JSArrayBuffer> buffer(JSArrayBuffer::cast(typed_array->buffer()),
                                isolate);
   void* backing_store =
       isolate->array_buffer_allocator()->AllocateUninitialized(
           fixed_typed_array->DataSize());
-  isolate->heap()->RegisterNewArrayBuffer(backing_store,
-                                          fixed_typed_array->DataSize());
   buffer->set_backing_store(backing_store);
   buffer->set_is_external(false);
+  isolate->heap()->RegisterNewArrayBuffer(isolate->heap()->InNewSpace(*buffer),
+                                          backing_store,
+                                          fixed_typed_array->DataSize());
   memcpy(buffer->backing_store(),
          fixed_typed_array->DataPtr(),
          fixed_typed_array->DataSize());
   Handle<ExternalArray> new_elements =
       isolate->factory()->NewExternalArray(
           fixed_typed_array->length(), typed_array->type(),
           static_cast<uint8_t*>(buffer->backing_store()));
 
   JSObject::SetMapAndElements(typed_array, new_map, new_elements);
 
@@ skipping 139 matching lines @@
                                             Handle<Object> new_value) {
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 }  // namespace internal
 }  // namespace v8