[heap] delete Heap::LeftTrimFixedAray

src/heap/mark-compact.cc

 // 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.
 
 #include "src/heap/mark-compact.h"
 
 #include "src/base/atomicops.h"
 #include "src/base/bits.h"
 #include "src/base/sys-info.h"
 #include "src/code-stubs.h"
@@ skipping 585 matching lines @@
 bool MarkCompactCollector::IsSweepingCompleted() {
   if (!pending_sweeper_tasks_semaphore_.WaitFor(
           base::TimeDelta::FromSeconds(0))) {
     return false;
   }
   pending_sweeper_tasks_semaphore_.Signal();
   return true;
 }
 
 
-void Marking::TransferMark(Heap* heap, Address old_start, Address new_start) {
-  // This is only used when resizing an object.
-  DCHECK(MemoryChunk::FromAddress(old_start) ==
-         MemoryChunk::FromAddress(new_start));
-
-  if (!heap->incremental_marking()->IsMarking()) return;
-
-  // If the mark doesn't move, we don't check the color of the object.
-  // It doesn't matter whether the object is black, since it hasn't changed
-  // size, so the adjustment to the live data count will be zero anyway.
-  if (old_start == new_start) return;
-
-  MarkBit new_mark_bit = MarkBitFrom(new_start);
-  MarkBit old_mark_bit = MarkBitFrom(old_start);
-
-#ifdef DEBUG
-  ObjectColor old_color = Color(old_mark_bit);
-#endif
-
-  if (Marking::IsBlack(old_mark_bit)) {
-    Marking::BlackToWhite(old_mark_bit);
-    Marking::MarkBlack(new_mark_bit);
-    return;
-  } else if (Marking::IsGrey(old_mark_bit)) {
-    Marking::GreyToWhite(old_mark_bit);
-    heap->incremental_marking()->WhiteToGreyAndPush(
-        HeapObject::FromAddress(new_start), new_mark_bit);
-    heap->incremental_marking()->RestartIfNotMarking();
-  }
-
-#ifdef DEBUG
-  ObjectColor new_color = Color(new_mark_bit);
-  DCHECK(new_color == old_color);
-#endif
-}
-
-
 const char* AllocationSpaceName(AllocationSpace space) {
   switch (space) {
     case NEW_SPACE:
       return "NEW_SPACE";
     case OLD_SPACE:
       return "OLD_SPACE";
     case CODE_SPACE:
       return "CODE_SPACE";
     case MAP_SPACE:
       return "MAP_SPACE";
@@ skipping 3834 matching lines @@
     MarkBit mark_bit = Marking::MarkBitFrom(host);
     if (Marking::IsBlack(mark_bit)) {
       RelocInfo rinfo(pc, RelocInfo::CODE_TARGET, 0, host);
       RecordRelocSlot(&rinfo, target);
     }
   }
 }
 
 }  // namespace internal
 }  // namespace v8