Don't record slots of objects that may contain raw values.

src/heap/store-buffer.cc

 // Copyright 2011 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 <algorithm>
 
 #include "src/v8.h"
 
 #include "src/base/atomicops.h"
 #include "src/counters.h"
@@ skipping 489 matching lines @@
                 // TODO(hpayer): This may introduce a huge pause here. We
                 // just care about finish sweeping of the scan on scavenge page.
                 heap_->mark_compact_collector()->EnsureSweepingCompleted();
               }
             }
             CHECK(page->owner() == heap_->old_pointer_space());
             HeapObjectIterator iterator(page, NULL);
             for (HeapObject* heap_object = iterator.Next(); heap_object != NULL;
                  heap_object = iterator.Next()) {
               // We iterate over objects that contain new space pointers only.
-              if (heap_object->MayContainNewSpacePointers()) {
+              if (!heap_object->MayContainRawValues()) {
                 FindPointersToNewSpaceInRegion(
                     heap_object->address() + HeapObject::kHeaderSize,
                     heap_object->address() + heap_object->Size(), slot_callback,
                     clear_maps);
               }
             }
           }
         }
       }
     }
@@ skipping 51 matching lines @@
     }
     old_buffer_is_sorted_ = false;
     old_buffer_is_filtered_ = false;
     *old_top_++ = reinterpret_cast<Address>(int_addr << kPointerSizeLog2);
     DCHECK(old_top_ <= old_limit_);
   }
   heap_->isolate()->counters()->store_buffer_compactions()->Increment();
 }
 }
 }  // namespace v8::internal