Revert "Fix JSArrayBufferView visitor template to fix ARM build."

and "Just visit young array buffers during scavenge. Additionally keep the views in new space in a separate global list and move them to the corresponding array buffers when they get promoted."

This reverts commit 295ab278
and commit bd61a85f.

TBR=hpayer@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/929973002

Cr-Commit-Position: refs/heads/master@{#26653}

src/factory.cc

@@ -1795,14 +1795,8 @@ void SetupArrayBufferView(i::Isolate* isolate,
 
   obj->set_buffer(*buffer);
 
-  Heap* heap = isolate->heap();
-  if (heap->InNewSpace(*obj)) {
-    obj->set_weak_next(heap->new_array_buffer_views_list());
-    heap->set_new_array_buffer_views_list(*obj);
-  } else {
-    obj->set_weak_next(buffer->weak_first_view());
-    buffer->set_weak_first_view(*obj);
-  }
+  obj->set_weak_next(buffer->weak_first_view());
+  buffer->set_weak_first_view(*obj);
 
   i::Handle<i::Object> byte_offset_object =
       isolate->factory()->NewNumberFromSize(byte_offset);

src/heap/heap.cc

@@ -141,8 +141,7 @@ Heap::Heap()
       external_string_table_(this),
       chunks_queued_for_free_(NULL),
       gc_callbacks_depth_(0),
-      deserialization_complete_(false),
-      promotion_failure_(false) {
+      deserialization_complete_(false) {
 // Allow build-time customization of the max semispace size. Building
 // V8 with snapshots and a non-default max semispace size is much
 // easier if you can define it as part of the build environment.
@@ -729,7 +728,6 @@ void Heap::GarbageCollectionEpilogue() {
   // Remember the last top pointer so that we can later find out
   // whether we allocated in new space since the last GC.
   new_space_top_after_last_gc_ = new_space()->top();
-  set_promotion_failure(false);
 }
 
 
@@ -1731,86 +1729,29 @@ void Heap::UpdateReferencesInExternalStringTable(
 
 
 void Heap::ProcessAllWeakReferences(WeakObjectRetainer* retainer) {
-  ProcessArrayBuffers(retainer, false);
-  ProcessNewArrayBufferViews(retainer);
+  ProcessArrayBuffers(retainer);
   ProcessNativeContexts(retainer);
   ProcessAllocationSites(retainer);
 }
 
 
 void Heap::ProcessYoungWeakReferences(WeakObjectRetainer* retainer) {
-  ProcessArrayBuffers(retainer, true);
-  ProcessNewArrayBufferViews(retainer);
+  ProcessArrayBuffers(retainer);
   ProcessNativeContexts(retainer);
 }
 
 
 void Heap::ProcessNativeContexts(WeakObjectRetainer* retainer) {
-  Object* head =
-      VisitWeakList<Context>(this, native_contexts_list(), retainer, false);
+  Object* head = VisitWeakList<Context>(this, native_contexts_list(), retainer);
   // Update the head of the list of contexts.
   set_native_contexts_list(head);
 }
 
 
-void Heap::ProcessArrayBuffers(WeakObjectRetainer* retainer,
-                               bool stop_after_young) {
-  Object* array_buffer_obj = VisitWeakList<JSArrayBuffer>(
-      this, array_buffers_list(), retainer, stop_after_young);
+void Heap::ProcessArrayBuffers(WeakObjectRetainer* retainer) {
+  Object* array_buffer_obj =
+      VisitWeakList<JSArrayBuffer>(this, array_buffers_list(), retainer);
   set_array_buffers_list(array_buffer_obj);
-
-#ifdef DEBUG
-  // Verify invariant that young array buffers come before old array buffers
-  // in array buffers list if there was no promotion failure.
-  Object* undefined = undefined_value();
-  Object* next = array_buffers_list();
-  bool old_objects_recorded = false;
-  if (promotion_failure()) return;
-  while (next != undefined) {
-    if (!old_objects_recorded) {
-      old_objects_recorded = !InNewSpace(next);
-    }
-    DCHECK((InNewSpace(next) && !old_objects_recorded) || !InNewSpace(next));
-    next = JSArrayBuffer::cast(next)->weak_next();
-  }
-#endif
-}
-
-
-void Heap::ProcessNewArrayBufferViews(WeakObjectRetainer* retainer) {
-  // Retain the list of new space views.
-  Object* typed_array_obj = VisitWeakList<JSArrayBufferView>(
-      this, new_array_buffer_views_list_, retainer, false);
-  set_new_array_buffer_views_list(typed_array_obj);
-
-  // Some objects in the list may be in old space now. Find them
-  // and move them to the corresponding array buffer.
-  Object* undefined = undefined_value();
-  Object* previous = undefined;
-  Object* head = undefined;
-  Object* next;
-  for (Object* o = new_array_buffer_views_list(); o != undefined;) {
-    JSArrayBufferView* view = JSArrayBufferView::cast(o);
-    next = view->weak_next();
-    if (!InNewSpace(view)) {
-      if (previous != undefined) {
-        // We are in the middle of the list, skip the old space element.
-        JSArrayBufferView::cast(previous)->set_weak_next(next);
-      }
-      JSArrayBuffer* buffer = JSArrayBuffer::cast(view->buffer());
-      view->set_weak_next(buffer->weak_first_view());
-      buffer->set_weak_first_view(view);
-    } else {
-      // We found a valid new space view, remember it.
-      previous = view;
-      if (head == undefined) {
-        // We are at the list head.
-        head = view;
-      }
-    }
-    o = next;
-  }
-  set_new_array_buffer_views_list(head);
 }
 
 
@@ -1826,8 +1767,8 @@ void Heap::TearDownArrayBuffers() {
 
 
 void Heap::ProcessAllocationSites(WeakObjectRetainer* retainer) {
-  Object* allocation_site_obj = VisitWeakList<AllocationSite>(
-      this, allocation_sites_list(), retainer, false);
+  Object* allocation_site_obj =
+      VisitWeakList<AllocationSite>(this, allocation_sites_list(), retainer);
   set_allocation_sites_list(allocation_site_obj);
 }
 
@@ -2260,7 +2201,6 @@ class ScavengingVisitor : public StaticVisitorBase {
       return;
     }
 
-    heap->set_promotion_failure(true);
     // If promotion failed, we try to copy the object to the other semi-space
     if (SemiSpaceCopyObject<alignment>(map, slot, object, object_size)) return;
 
@@ -5599,7 +5539,6 @@ bool Heap::CreateHeapObjects() {
 
   set_native_contexts_list(undefined_value());
   set_array_buffers_list(undefined_value());
-  set_new_array_buffer_views_list(undefined_value());
   set_allocation_sites_list(undefined_value());
   return true;
 }

src/heap/heap.h

@@ -859,13 +859,6 @@ class Heap {
   void set_array_buffers_list(Object* object) { array_buffers_list_ = object; }
   Object* array_buffers_list() const { return array_buffers_list_; }
 
-  void set_new_array_buffer_views_list(Object* object) {
-    new_array_buffer_views_list_ = object;
-  }
-  Object* new_array_buffer_views_list() const {
-    return new_array_buffer_views_list_;
-  }
-
   void set_allocation_sites_list(Object* object) {
     allocation_sites_list_ = object;
   }
@@ -1453,11 +1446,6 @@ class Heap {
 
   bool deserialization_complete() const { return deserialization_complete_; }
 
-  bool promotion_failure() const { return promotion_failure_; }
-  void set_promotion_failure(bool promotion_failure) {
-    promotion_failure_ = promotion_failure;
-  }
-
  protected:
   // Methods made available to tests.
 
@@ -1623,16 +1611,11 @@ class Heap {
   bool inline_allocation_disabled_;
 
   // Weak list heads, threaded through the objects.
-  // List heads are initialized lazily and contain the undefined_value at start.
+  // List heads are initilized lazily and contain the undefined_value at start.
   Object* native_contexts_list_;
   Object* array_buffers_list_;
   Object* allocation_sites_list_;
 
-  // This is a global list of array buffer views in new space. When the views
-  // get promoted, they are removed form the list and added to the corresponding
-  // array buffer.
-  Object* new_array_buffer_views_list_;
-
   // List of encountered weak collections (JSWeakMap and JSWeakSet) during
   // marking. It is initialized during marking, destroyed after marking and
   // contains Smi(0) while marking is not active.
@@ -1965,8 +1948,7 @@ class Heap {
   void MarkCompactEpilogue();
 
   void ProcessNativeContexts(WeakObjectRetainer* retainer);
-  void ProcessArrayBuffers(WeakObjectRetainer* retainer, bool stop_after_young);
-  void ProcessNewArrayBufferViews(WeakObjectRetainer* retainer);
+  void ProcessArrayBuffers(WeakObjectRetainer* retainer);
   void ProcessAllocationSites(WeakObjectRetainer* retainer);
 
   // Deopts all code that contains allocation instruction which are tenured or
@@ -2126,11 +2108,6 @@ class Heap {
 
   bool deserialization_complete_;
 
-  // A promotion failure indicates that old space promotion failed during
-  // gc, i.e., some objects that should have gotten promoted had to stay in
-  // the new space (they were copied to the other semi-space).
-  bool promotion_failure_;
-
   friend class AlwaysAllocateScope;
   friend class Deserializer;
   friend class Factory;

src/heap/mark-compact.cc

@@ -1865,7 +1865,6 @@ int MarkCompactCollector::DiscoverAndEvacuateBlackObjectsOnPage(
           TryPromoteObject(object, size)) {
         continue;
       }
-      heap()->set_promotion_failure(true);
 
       AllocationResult allocation = new_space->AllocateRaw(size);
       if (allocation.IsRetry()) {

src/heap/objects-visiting.cc

@@ -191,19 +191,15 @@ struct WeakListVisitor;
 
 
 template <class T>
-Object* VisitWeakList(Heap* heap, Object* list, WeakObjectRetainer* retainer,
-                      bool stop_after_young) {
+Object* VisitWeakList(Heap* heap, Object* list, WeakObjectRetainer* retainer) {
   Object* undefined = heap->undefined_value();
   Object* head = undefined;
   T* tail = NULL;
   MarkCompactCollector* collector = heap->mark_compact_collector();
   bool record_slots = MustRecordSlots(heap);
-
   while (list != undefined) {
     // Check whether to keep the candidate in the list.
     T* candidate = reinterpret_cast<T*>(list);
-    T* original_candidate = candidate;
-
     Object* retained = retainer->RetainAs(list);
     if (retained != NULL) {
       if (head == undefined) {
@@ -224,19 +220,9 @@ Object* VisitWeakList(Heap* heap, Object* list, WeakObjectRetainer* retainer,
       candidate = reinterpret_cast<T*>(retained);
       tail = candidate;
 
+
       // tail is a live object, visit it.
       WeakListVisitor<T>::VisitLiveObject(heap, tail, retainer);
-
-      // The list of weak objects is usually order. It starts with objects
-      // recently allocated in the young generation followed by objects
-      // allocated in the old generation. When a promotion failure happens,
-      // the list is not ordered until the next GC.
-      // For young generation collections we just have to visit until the last
-      // young generation objects.
-      if (stop_after_young && !heap->promotion_failure() &&
-          !heap->InNewSpace(original_candidate)) {
-        return head;
-      }
     } else {
       WeakListVisitor<T>::VisitPhantomObject(heap, candidate);
     }
@@ -330,8 +316,7 @@ struct WeakListVisitor<Context> {
   static void DoWeakList(Heap* heap, Context* context,
                          WeakObjectRetainer* retainer, int index) {
     // Visit the weak list, removing dead intermediate elements.
-    Object* list_head =
-        VisitWeakList<T>(heap, context->get(index), retainer, false);
+    Object* list_head = VisitWeakList<T>(heap, context->get(index), retainer);
 
     // Update the list head.
     context->set(index, list_head, UPDATE_WRITE_BARRIER);
@@ -383,7 +368,7 @@ struct WeakListVisitor<JSArrayBuffer> {
   static void VisitLiveObject(Heap* heap, JSArrayBuffer* array_buffer,
                               WeakObjectRetainer* retainer) {
     Object* typed_array_obj = VisitWeakList<JSArrayBufferView>(
-        heap, array_buffer->weak_first_view(), retainer, false);
+        heap, array_buffer->weak_first_view(), retainer);
     array_buffer->set_weak_first_view(typed_array_obj);
     if (typed_array_obj != heap->undefined_value() && MustRecordSlots(heap)) {
       Object** slot = HeapObject::RawField(array_buffer,
@@ -414,21 +399,23 @@ struct WeakListVisitor<AllocationSite> {
 };
 
 
+template Object* VisitWeakList<Code>(Heap* heap, Object* list,
+                                     WeakObjectRetainer* retainer);
+
+
+template Object* VisitWeakList<JSFunction>(Heap* heap, Object* list,
+                                           WeakObjectRetainer* retainer);
+
+
 template Object* VisitWeakList<Context>(Heap* heap, Object* list,
-                                        WeakObjectRetainer* retainer,
-                                        bool stop_after_young);
+                                        WeakObjectRetainer* retainer);
 
 
 template Object* VisitWeakList<JSArrayBuffer>(Heap* heap, Object* list,
-                                              WeakObjectRetainer* retainer,
-                                              bool stop_after_young);
+                                              WeakObjectRetainer* retainer);
 
-template Object* VisitWeakList<JSArrayBufferView>(Heap* heap, Object* list,
-                                                  WeakObjectRetainer* retainer,
-                                                  bool stop_after_young);
 
 template Object* VisitWeakList<AllocationSite>(Heap* heap, Object* list,
-                                               WeakObjectRetainer* retainer,
-                                               bool stop_after_young);
+                                               WeakObjectRetainer* retainer);
 }
 }  // namespace v8::internal

src/heap/objects-visiting.h

@@ -489,8 +489,7 @@ class WeakObjectRetainer;
 // pointers. The template parameter T is a WeakListVisitor that defines how to
 // access the next-element pointers.
 template <class T>
-Object* VisitWeakList(Heap* heap, Object* list, WeakObjectRetainer* retainer,
-                      bool stop_after_young);
+Object* VisitWeakList(Heap* heap, Object* list, WeakObjectRetainer* retainer);
 }
 }  // namespace v8::internal
 

src/objects.cc

@@ -16927,15 +16927,8 @@ Handle<JSArrayBuffer> JSTypedArray::MaterializeArrayBuffer(
           fixed_typed_array->length(), typed_array->type(),
           static_cast<uint8_t*>(buffer->backing_store()));
 
-  Heap* heap = isolate->heap();
-  if (heap->InNewSpace(*typed_array)) {
-    DCHECK(typed_array->weak_next() == isolate->heap()->undefined_value());
-    typed_array->set_weak_next(heap->new_array_buffer_views_list());
-    heap->set_new_array_buffer_views_list(*typed_array);
-  } else {
-    buffer->set_weak_first_view(*typed_array);
-    DCHECK(typed_array->weak_next() == isolate->heap()->undefined_value());
-  }
+  buffer->set_weak_first_view(*typed_array);
+  DCHECK(typed_array->weak_next() == isolate->heap()->undefined_value());
   typed_array->set_buffer(*buffer);
   JSObject::SetMapAndElements(typed_array, new_map, new_elements);
 

src/runtime/runtime-typedarray.cc

@@ -88,8 +88,6 @@ bool Runtime::SetupArrayBufferAllocatingData(Isolate* isolate,
 
 void Runtime::NeuterArrayBuffer(Handle<JSArrayBuffer> array_buffer) {
   Isolate* isolate = array_buffer->GetIsolate();
-  // Firstly, iterate over the views which are referenced directly by the array
-  // buffer.
   for (Handle<Object> view_obj(array_buffer->weak_first_view(), isolate);
        !view_obj->IsUndefined();) {
     Handle<JSArrayBufferView> view(JSArrayBufferView::cast(*view_obj));
@@ -102,24 +100,6 @@ void Runtime::NeuterArrayBuffer(Handle<JSArrayBuffer> array_buffer) {
     }
     view_obj = handle(view->weak_next(), isolate);
   }
-
-  // Secondly, iterate over the global list of new space views to find views
-  // that belong to the neutered array buffer.
-  Heap* heap = isolate->heap();
-  for (Handle<Object> view_obj(heap->new_array_buffer_views_list(), isolate);
-       !view_obj->IsUndefined();) {
-    Handle<JSArrayBufferView> view(JSArrayBufferView::cast(*view_obj));
-    if (view->buffer() == *array_buffer) {
-      if (view->IsJSTypedArray()) {
-        JSTypedArray::cast(*view)->Neuter();
-      } else if (view->IsJSDataView()) {
-        JSDataView::cast(*view)->Neuter();
-      } else {
-        UNREACHABLE();
-      }
-    }
-    view_obj = handle(view->weak_next(), isolate);
-  }
   array_buffer->Neuter();
 }
 
@@ -285,18 +265,11 @@ RUNTIME_FUNCTION(Runtime_TypedArrayInitialize) {
   holder->set_byte_offset(*byte_offset_object);
   holder->set_byte_length(*byte_length_object);
 
-  Heap* heap = isolate->heap();
   if (!maybe_buffer->IsNull()) {
     Handle<JSArrayBuffer> buffer = Handle<JSArrayBuffer>::cast(maybe_buffer);
     holder->set_buffer(*buffer);
-
-    if (heap->InNewSpace(*holder)) {
-      holder->set_weak_next(heap->new_array_buffer_views_list());
-      heap->set_new_array_buffer_views_list(*holder);
-    } else {
-      holder->set_weak_next(buffer->weak_first_view());
-      buffer->set_weak_first_view(*holder);
-    }
+    holder->set_weak_next(buffer->weak_first_view());
+    buffer->set_weak_first_view(*holder);
 
     Handle<ExternalArray> elements = isolate->factory()->NewExternalArray(
         static_cast<int>(length), array_type,
@@ -394,15 +367,8 @@ RUNTIME_FUNCTION(Runtime_TypedArrayInitializeFromArrayLike) {
       isolate->factory()->NewNumberFromSize(byte_length));
   holder->set_byte_length(*byte_length_obj);
   holder->set_length(*length_obj);
-
-  Heap* heap = isolate->heap();
-  if (heap->InNewSpace(*holder)) {
-    holder->set_weak_next(heap->new_array_buffer_views_list());
-    heap->set_new_array_buffer_views_list(*holder);
-  } else {
-    holder->set_weak_next(buffer->weak_first_view());
-    buffer->set_weak_first_view(*holder);
-  }
+  holder->set_weak_next(buffer->weak_first_view());
+  buffer->set_weak_first_view(*holder);
 
   Handle<ExternalArray> elements = isolate->factory()->NewExternalArray(
       static_cast<int>(length), array_type,
@@ -576,14 +542,8 @@ RUNTIME_FUNCTION(Runtime_DataViewInitialize) {
   holder->set_byte_offset(*byte_offset);
   holder->set_byte_length(*byte_length);
 
-  Heap* heap = isolate->heap();
-  if (heap->InNewSpace(*holder)) {
-    holder->set_weak_next(heap->new_array_buffer_views_list());
-    heap->set_new_array_buffer_views_list(*holder);
-  } else {
-    holder->set_weak_next(buffer->weak_first_view());
-    buffer->set_weak_first_view(*holder);
-  }
+  holder->set_weak_next(buffer->weak_first_view());
+  buffer->set_weak_first_view(*holder);
 
   return isolate->heap()->undefined_value();
 }

src/serialize.cc

@@ -672,8 +672,6 @@ void Deserializer::Deserialize(Isolate* isolate) {
       isolate_->heap()->undefined_value());
   isolate_->heap()->set_array_buffers_list(
       isolate_->heap()->undefined_value());
-  isolate->heap()->set_new_array_buffer_views_list(
-      isolate_->heap()->undefined_value());
 
   // The allocation site list is build during root iteration, but if no sites
   // were encountered then it needs to be initialized to undefined.

test/cctest/test-weaktypedarrays.cc

@@ -62,20 +62,7 @@ static bool HasArrayBufferInWeakList(Heap* heap, JSArrayBuffer* ab) {
 }
 
 
-static int CountViewsInNewSpaceList(Heap* heap, JSArrayBuffer* array_buffer) {
-  int count = 0;
-  for (Object* o = heap->new_array_buffer_views_list(); !o->IsUndefined();) {
-    JSArrayBufferView* view = JSArrayBufferView::cast(o);
-    if (array_buffer == view->buffer()) {
-      count++;
-    }
-    o = view->weak_next();
-  }
-  return count;
-}
-
-
-static int CountViews(Heap* heap, JSArrayBuffer* array_buffer) {
+static int CountViews(JSArrayBuffer* array_buffer) {
   int count = 0;
   for (Object* o = array_buffer->weak_first_view();
        !o->IsUndefined();
@@ -83,27 +70,17 @@ static int CountViews(Heap* heap, JSArrayBuffer* array_buffer) {
     count++;
   }
 
-  return count + CountViewsInNewSpaceList(heap, array_buffer);
-}
-
-
-static bool HasViewInNewSpaceList(Heap* heap, JSArrayBufferView* ta) {
-  for (Object* o = heap->new_array_buffer_views_list(); !o->IsUndefined();
-       o = JSArrayBufferView::cast(o)->weak_next()) {
-    if (ta == o) return true;
-  }
-  return false;
+  return count;
 }
 
-
-static bool HasViewInWeakList(Heap* heap, JSArrayBuffer* array_buffer,
+static bool HasViewInWeakList(JSArrayBuffer* array_buffer,
                               JSArrayBufferView* ta) {
   for (Object* o = array_buffer->weak_first_view();
        !o->IsUndefined();
        o = JSArrayBufferView::cast(o)->weak_next()) {
     if (ta == o) return true;
   }
-  return HasViewInNewSpaceList(heap, ta);
+  return false;
 }
 
 
@@ -223,18 +200,18 @@ void TestViewFromApi() {
 
       Handle<JSArrayBufferView> ita1 = v8::Utils::OpenHandle(*ta1);
       Handle<JSArrayBufferView> ita2 = v8::Utils::OpenHandle(*ta2);
-      CHECK_EQ(2, CountViews(isolate->heap(), *iab));
-      CHECK(HasViewInWeakList(isolate->heap(), *iab, *ita1));
-      CHECK(HasViewInWeakList(isolate->heap(), *iab, *ita2));
+      CHECK_EQ(2, CountViews(*iab));
+      CHECK(HasViewInWeakList(*iab, *ita1));
+      CHECK(HasViewInWeakList(*iab, *ita2));
     }
     isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
-    CHECK_EQ(1, CountViews(isolate->heap(), *iab));
+    CHECK_EQ(1, CountViews(*iab));
     Handle<JSArrayBufferView> ita1 = v8::Utils::OpenHandle(*ta1);
-    CHECK(HasViewInWeakList(isolate->heap(), *iab, *ita1));
+    CHECK(HasViewInWeakList(*iab, *ita1));
   }
   isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
 
-  CHECK_EQ(0, CountViews(isolate->heap(), *iab));
+  CHECK_EQ(0, CountViews(*iab));
 }
 
 
@@ -322,13 +299,10 @@ static void TestTypedArrayFromScript(const char* constructor) {
           v8::Handle<TypedArray>::Cast(CompileRun("ta3"));
       CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);
       Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
-      CHECK_EQ(3, CountViews(isolate->heap(), *iab));
-      CHECK(HasViewInWeakList(isolate->heap(), *iab,
-                              *v8::Utils::OpenHandle(*ta1)));
-      CHECK(HasViewInWeakList(isolate->heap(), *iab,
-                              *v8::Utils::OpenHandle(*ta2)));
-      CHECK(HasViewInWeakList(isolate->heap(), *iab,
-                              *v8::Utils::OpenHandle(*ta3)));
+      CHECK_EQ(3, CountViews(*iab));
+      CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta1)));
+      CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta2)));
+      CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta3)));
     }
 
     i::SNPrintF(source, "ta%d = null;", i);
@@ -342,14 +316,13 @@ static void TestTypedArrayFromScript(const char* constructor) {
       v8::Handle<v8::ArrayBuffer> ab =
           v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab"));
       Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
-      CHECK_EQ(2, CountViews(isolate->heap(), *iab));
+      CHECK_EQ(2, CountViews(*iab));
       for (int j = 1; j <= 3; j++) {
         if (j == i) continue;
         i::SNPrintF(source, "ta%d", j);
         v8::Handle<TypedArray> ta =
             v8::Handle<TypedArray>::Cast(CompileRun(source.start()));
-        CHECK(HasViewInWeakList(isolate->heap(), *iab,
-                                *v8::Utils::OpenHandle(*ta)));
+        CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta)));
       }
     }
 
@@ -363,7 +336,7 @@ static void TestTypedArrayFromScript(const char* constructor) {
       v8::Handle<v8::ArrayBuffer> ab =
           v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab"));
       Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
-      CHECK_EQ(0, CountViews(isolate->heap(), *iab));
+      CHECK_EQ(0, CountViews(*iab));
     }
   }
 }