Notify collector about lazily deoptimized code objects.

src/spaces.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 169 matching lines @@
 
   static int CellsForLength(int length) {
     return (length + kBitsPerCell - 1) >> kBitsPerCellLog2;
   }
 
   int CellsCount() {
     return CellsForLength(kLength);
   }
 
   static int SizeFor(int cells_count) {
-    return sizeof(MarkBit::CellType)*cells_count;
+    return sizeof(MarkBit::CellType) * cells_count;
   }
 
   INLINE(static uint32_t IndexToCell(uint32_t index)) {
     return index >> kBitsPerCellLog2;
   }
 
   INLINE(static uint32_t CellToIndex(uint32_t index)) {
     return index << kBitsPerCellLog2;
   }
 
@@ skipping 1377 matching lines @@
              static_cast<double>(sizes[0] * 100) / Page::kObjectAreaSize,
              static_cast<int>(sizes[1]),
              static_cast<double>(sizes[1] * 100) / Page::kObjectAreaSize,
              static_cast<int>(sizes[2]),
              static_cast<double>(sizes[2] * 100) / Page::kObjectAreaSize,
              static_cast<int>(sizes[3]),
              static_cast<double>(sizes[3] * 100) / Page::kObjectAreaSize,
              (ratio > ratio_threshold) ? "[fragmented]" : "");
     }
 
-    return (ratio > ratio_threshold) || FLAG_always_compact;
+    return (ratio > ratio_threshold) ||
+        (FLAG_always_compact && sizes[3] != Page::kObjectAreaSize);
   }
 
   void EvictEvacuationCandidatesFromFreeLists();
 
   bool CanExpand();
 
  protected:
   // Maximum capacity of this space.
   intptr_t max_capacity_;
 
@@ skipping 1013 matching lines @@
   }
   // Must be small, since an iteration is used for lookup.
   static const int kMaxComments = 64;
 };
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_SPACES_H_