[heap] Record pretenuring feedback for moved pages

src/heap/mark-compact.h

 // Copyright 2012 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.
 
 #ifndef V8_HEAP_MARK_COMPACT_H_
 #define V8_HEAP_MARK_COMPACT_H_
 
 #include <deque>
 
 #include "src/base/bits.h"
@@ skipping 311 matching lines @@
 
  private:
   inline Heap* heap() { return chunk_->heap(); }
 
   MemoryChunk* chunk_;
   MarkBitCellIterator it_;
   Address cell_base_;
   MarkBit::CellType current_cell_;
 };
 
+enum PageEvacuationMode { NEW_TO_NEW, NEW_TO_OLD };
+
 // -------------------------------------------------------------------------
 // Mark-Compact collector
 class MarkCompactCollector {
  public:
   class Evacuator;
 
   class Sweeper {
    public:
     class SweeperTask;
 
@@ skipping 177 matching lines @@
 
   // Mark objects in implicit references groups if their parent object
   // is marked.
   void MarkImplicitRefGroups(MarkObjectFunction mark_object);
 
   MarkingDeque* marking_deque() { return &marking_deque_; }
 
   Sweeper& sweeper() { return sweeper_; }
 
  private:
+  template <PageEvacuationMode mode>
   class EvacuateNewSpacePageVisitor;
   class EvacuateNewSpaceVisitor;
   class EvacuateOldSpaceVisitor;
   class EvacuateRecordOnlyVisitor;
   class EvacuateVisitorBase;
   class HeapObjectVisitor;
   class ObjectStatsVisitor;
 
   explicit MarkCompactCollector(Heap* heap);
 
@@ skipping 232 matching lines @@
 
  private:
   MarkCompactCollector* collector_;
 };
 
 V8_EXPORT_PRIVATE const char* AllocationSpaceName(AllocationSpace space);
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_MARK_COMPACT_H_