Notify collector about lazily deoptimized code objects.

src/mark-compact.h

Index: src/mark-compact.h
diff --git a/src/mark-compact.h b/src/mark-compact.h
index b4ee4e75348b73f5051e94084dbaea0054a044f2..469dd29f199c55a284aa108256458a314adb1bfa 100644
--- a/src/mark-compact.h
+++ b/src/mark-compact.h
@@ -324,6 +324,8 @@ class SlotsBuffer {
 
   void UpdateSlots(Heap* heap);
 
+  void UpdateSlotsWithFilter(Heap* heap);
+
   SlotsBuffer* next() { return next_; }
 
   static int SizeOfChain(SlotsBuffer* buffer) {
@@ -340,9 +342,15 @@ class SlotsBuffer {
     return idx_ < kNumberOfElements - 1;
   }
 
-  static void UpdateSlotsRecordedIn(Heap* heap, SlotsBuffer* buffer) {
+  static void UpdateSlotsRecordedIn(Heap* heap,
+                                    SlotsBuffer* buffer,
+                                    bool code_slots_filtering_required) {
     while (buffer != NULL) {
-      buffer->UpdateSlots(heap);
+      if (code_slots_filtering_required) {
+        buffer->UpdateSlotsWithFilter(heap);
+      } else {
+        buffer->UpdateSlots(heap);
+      }
       buffer = buffer->next();
     }
   }
@@ -546,10 +554,17 @@ class MarkCompactCollector {
     encountered_weak_maps_ = weak_map;
   }
 
+  void InvalidateCode(Code* code);
+
  private:
   MarkCompactCollector();
   ~MarkCompactCollector();
 
+  bool MarkInvalidatedCode();
+  void RemoveDeadInvalidatedCode();
+  void ProcessInvalidatedCode(ObjectVisitor* visitor);
+
+
 #ifdef DEBUG
   enum CollectorState {
     IDLE,
@@ -573,6 +588,8 @@ class MarkCompactCollector {
   // candidates.
   bool compacting_;
 
+  bool was_marked_incrementally_;
+
   bool collect_maps_;
 
   // A pointer to the current stack-allocated GC tracer object during a full
@@ -762,6 +779,7 @@ class MarkCompactCollector {
   Object* encountered_weak_maps_;
 
   List<Page*> evacuation_candidates_;
+  List<Code*> invalidated_code_;
 
   friend class Heap;
 };