commit da12d29b40bc9ac10bcdeb5696b69c3ed0d3133f
author Ben Murdoch <benm@google.com> Thu Jun 02 14:46:10 2016 +0100
committer Dirk Vogt <dirk@fairphone.com> Fri Mar 17 16:06:11 2017 +0100
tree f11e06aa13d44d9524519b744c8a645b7578ffd9
parent 097c5b25f8b57b92e6c94f25383a883ff242344f

Upgrade V8 to 5.1.281.57  DO NOT MERGE

FPIIM-449

Change-Id: Id981b686b4d587ac31697662eb98bb34be42ad90
(cherry picked from commit 3b9bc31999c9787eb726ecdbfd5796bfdec32a18)

src/heap/mark-compact-inl.h

diff --git a/src/heap/mark-compact-inl.h b/src/heap/mark-compact-inl.h
index f117ace..281ece4 100644
--- a/src/heap/mark-compact-inl.h
+++ b/src/heap/mark-compact-inl.h
@@ -6,7 +6,7 @@
 #define V8_HEAP_MARK_COMPACT_INL_H_
 
 #include "src/heap/mark-compact.h"
-#include "src/heap/slots-buffer.h"
+#include "src/heap/remembered-set.h"
 #include "src/isolate.h"
 
 namespace v8 {
@@ -70,25 +70,12 @@
 void MarkCompactCollector::RecordSlot(HeapObject* object, Object** slot,
                                       Object* target) {
   Page* target_page = Page::FromAddress(reinterpret_cast<Address>(target));
+  Page* source_page = Page::FromAddress(reinterpret_cast<Address>(object));
   if (target_page->IsEvacuationCandidate() &&
       !ShouldSkipEvacuationSlotRecording(object)) {
-    if (!SlotsBuffer::AddTo(slots_buffer_allocator_,
-                            target_page->slots_buffer_address(), slot,
-                            SlotsBuffer::FAIL_ON_OVERFLOW)) {
-      EvictPopularEvacuationCandidate(target_page);
-    }
-  }
-}
-
-
-void MarkCompactCollector::ForceRecordSlot(HeapObject* object, Object** slot,
-                                           Object* target) {
-  Page* target_page = Page::FromAddress(reinterpret_cast<Address>(target));
-  if (target_page->IsEvacuationCandidate() &&
-      !ShouldSkipEvacuationSlotRecording(object)) {
-    CHECK(SlotsBuffer::AddTo(slots_buffer_allocator_,
-                             target_page->slots_buffer_address(), slot,
-                             SlotsBuffer::IGNORE_OVERFLOW));
+    DCHECK(Marking::IsBlackOrGrey(Marking::MarkBitFrom(object)));
+    RememberedSet<OLD_TO_OLD>::Insert(source_page,
+                                      reinterpret_cast<Address>(slot));
   }
 }
 
@@ -182,6 +169,7 @@
       } else if (T == kAllLiveObjects) {
         object = HeapObject::FromAddress(addr);
       }
+
       // Clear the second bit of the found object.
       current_cell_ &= ~second_bit_index;