[heap] Parallel newspace evacuation, semispace copy, and compaction \o/

src/heap/mark-compact.h

Index: src/heap/mark-compact.h
diff --git a/src/heap/mark-compact.h b/src/heap/mark-compact.h
index cfb2d9d27022f033341acce33c68212faa8ac31a..ab6a3416808198ff05999b10f0a1279627947601 100644
--- a/src/heap/mark-compact.h
+++ b/src/heap/mark-compact.h
@@ -406,7 +406,8 @@ class MarkCompactCollector {
 
   void MigrateObject(HeapObject* dst, HeapObject* src, int size,
                      AllocationSpace to_old_space,
-                     SlotsBuffer** evacuation_slots_buffer);
+                     SlotsBuffer** evacuation_slots_buffer,
+                     LocalStoreBuffer* local_store_buffer);
 
   void InvalidateCode(Code* code);
 
@@ -511,8 +512,6 @@ class MarkCompactCollector {
   class HeapObjectVisitor;
   class SweeperTask;
 
-  static const int kInitialLocalPretenuringFeedbackCapacity = 256;
-
   explicit MarkCompactCollector(Heap* heap);
 
   bool WillBeDeoptimized(Code* code);
@@ -699,9 +698,7 @@ class MarkCompactCollector {
   void SweepSpaces();
 
   void EvacuateNewSpacePrologue();
-
-  // Returns local pretenuring feedback.
-  HashMap* EvacuateNewSpaceInParallel();
+  void EvacuateNewSpaceEpilogue();
 
   void AddEvacuationSlotsBufferSynchronized(
       SlotsBuffer* evacuation_slots_buffer);
@@ -752,7 +749,8 @@ class MarkCompactCollector {
 
   // Updates store buffer and slot buffer for a pointer in a migrating object.
   void RecordMigratedSlot(Object* value, Address slot,
-                          SlotsBuffer** evacuation_slots_buffer);
+                          SlotsBuffer** evacuation_slots_buffer,
+                          LocalStoreBuffer* local_store_buffer);
 
   // Adds the code entry slot to the slots buffer.
   void RecordMigratedCodeEntrySlot(Address code_entry, Address code_entry_slot,
@@ -777,9 +775,7 @@ class MarkCompactCollector {
   CodeFlusher* code_flusher_;
   bool have_code_to_deoptimize_;
 
-  List<Page*> evacuation_candidates_;
-
-  List<MemoryChunk*> newspace_evacuation_candidates_;
+  List<MemoryChunk*> evacuation_candidates_;
 
   // The evacuation_slots_buffers_ are used by the compaction threads.
   // When a compaction task finishes, it uses