Implement ClearFunctionTypeFeedback for test cases.

src/mark-compact.cc

 // Copyright 2012 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 1168 matching lines @@
     if (!table_mark.Get()) collector->SetMark(table, table_mark);
     // Recording the map slot can be skipped, because maps are not compacted.
     collector->MarkObject(table->map(), Marking::MarkBitFrom(table->map()));
     ASSERT(MarkCompactCollector::IsMarked(table->map()));
   }
 
   static void VisitCode(Map* map, HeapObject* object) {
     Heap* heap = map->GetHeap();
     Code* code = reinterpret_cast<Code*>(object);
     if (FLAG_cleanup_code_caches_at_gc) {
-      Object* raw_info = code->type_feedback_info();
-      if (raw_info->IsTypeFeedbackInfo()) {
-        TypeFeedbackCells* type_feedback_cells =
-            TypeFeedbackInfo::cast(raw_info)->type_feedback_cells();
-        for (int i = 0; i < type_feedback_cells->CellCount(); i++) {
-          ASSERT(type_feedback_cells->AstId(i)->IsSmi());
-          JSGlobalPropertyCell* cell = type_feedback_cells->Cell(i);
-          cell->set_value(TypeFeedbackCells::RawUninitializedSentinel(heap));
-        }
-      }
+      code->ClearTypeFeedbackCells(heap);
     }
     code->CodeIterateBody<StaticMarkingVisitor>(heap);
   }
 
   // Code flushing support.
 
   // How many collections newly compiled code object will survive before being
   // flushed.
   static const int kCodeAgeThreshold = 5;
 
@@ skipping 2935 matching lines @@
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 
 
 } }  // namespace v8::internal