Separate Cell and PropertyCell spaces

src/incremental-marking.cc

Index: src/incremental-marking.cc
diff --git a/src/incremental-marking.cc b/src/incremental-marking.cc
index e19d6e28f69f9141b3d47756bcf2d3129a9a6eaf..293096957ce93dac5e824d58a2342d9d034b71a8 100644
--- a/src/incremental-marking.cc
+++ b/src/incremental-marking.cc
@@ -394,6 +394,7 @@ void IncrementalMarking::SetOldSpacePageFlags(MemoryChunk* chunk,
       chunk->SetFlag(MemoryChunk::RESCAN_ON_EVACUATION);
     }
   } else if (chunk->owner()->identity() == CELL_SPACE ||
+             chunk->owner()->identity() == JS_GLOBAL_PROPERTY_CELL_SPACE ||
              chunk->scan_on_scavenge()) {
     chunk->ClearFlag(MemoryChunk::POINTERS_TO_HERE_ARE_INTERESTING);
     chunk->ClearFlag(MemoryChunk::POINTERS_FROM_HERE_ARE_INTERESTING);
@@ -440,6 +441,8 @@ void IncrementalMarking::DeactivateIncrementalWriteBarrier() {
   DeactivateIncrementalWriteBarrierForSpace(heap_->old_pointer_space());
   DeactivateIncrementalWriteBarrierForSpace(heap_->old_data_space());
   DeactivateIncrementalWriteBarrierForSpace(heap_->cell_space());
+  DeactivateIncrementalWriteBarrierForSpace(
+      heap_->js_global_property_cell_space());
   DeactivateIncrementalWriteBarrierForSpace(heap_->map_space());
   DeactivateIncrementalWriteBarrierForSpace(heap_->code_space());
   DeactivateIncrementalWriteBarrierForSpace(heap_->new_space());
@@ -474,6 +477,7 @@ void IncrementalMarking::ActivateIncrementalWriteBarrier() {
   ActivateIncrementalWriteBarrier(heap_->old_pointer_space());
   ActivateIncrementalWriteBarrier(heap_->old_data_space());
   ActivateIncrementalWriteBarrier(heap_->cell_space());
+  ActivateIncrementalWriteBarrier(heap_->js_global_property_cell_space());
   ActivateIncrementalWriteBarrier(heap_->map_space());
   ActivateIncrementalWriteBarrier(heap_->code_space());
   ActivateIncrementalWriteBarrier(heap_->new_space());