Revert trunk to version 3.16.4.

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 817 matching lines @@
 void MarkCompactCollector::Finish() {
 #ifdef DEBUG
   ASSERT(state_ == SWEEP_SPACES || state_ == RELOCATE_OBJECTS);
   state_ = IDLE;
 #endif
   // The stub cache is not traversed during GC; clear the cache to
   // force lazy re-initialization of it. This must be done after the
   // GC, because it relies on the new address of certain old space
   // objects (empty string, illegal builtin).
   heap()->isolate()->stub_cache()->Clear();
+
+  heap()->external_string_table_.CleanUp();
 }
 
 
 // -------------------------------------------------------------------------
 // Phase 1: tracing and marking live objects.
 //   before: all objects are in normal state.
 //   after: a live object's map pointer is marked as '00'.
 
 // Marking all live objects in the heap as part of mark-sweep or mark-compact
 // collection.  Before marking, all objects are in their normal state.  After
@@ skipping 78 matching lines @@
     isolate_->heap()->mark_compact_collector()->
         RecordSlot(code_slot, code_slot, *code_slot);
 
     candidate = next_candidate;
   }
 
   shared_function_info_candidates_head_ = NULL;
 }
 
 
-bool CodeFlusher::ContainsCandidate(SharedFunctionInfo* shared_info) {
-  SharedFunctionInfo* candidate = shared_function_info_candidates_head_;
-  while (candidate != NULL) {
-    if (candidate == shared_info) return true;
-    candidate = GetNextCandidate(candidate);
-  }
-  return false;
-}
-
-
 void CodeFlusher::EvictCandidate(SharedFunctionInfo* shared_info) {
   // The function is no longer a candidate, make sure it gets visited
   // again so that previous flushing decisions are revisited.
   isolate_->heap()->incremental_marking()->RecordWrites(shared_info);
 
   SharedFunctionInfo* candidate = shared_function_info_candidates_head_;
   SharedFunctionInfo* next_candidate;
   if (candidate == shared_info) {
     next_candidate = GetNextCandidate(shared_info);
     shared_function_info_candidates_head_ = next_candidate;
@@ skipping 1104 matching lines @@
 
   // Prune the symbol table removing all symbols only pointed to by the
   // symbol table.  Cannot use symbol_table() here because the symbol
   // table is marked.
   SymbolTable* symbol_table = heap()->symbol_table();
   SymbolTableCleaner v(heap());
   symbol_table->IterateElements(&v);
   symbol_table->ElementsRemoved(v.PointersRemoved());
   heap()->external_string_table_.Iterate(&v);
   heap()->external_string_table_.CleanUp();
-  heap()->error_object_list_.RemoveUnmarked(heap());
 
   // Process the weak references.
   MarkCompactWeakObjectRetainer mark_compact_object_retainer;
   heap()->ProcessWeakReferences(&mark_compact_object_retainer);
 
   // Remove object groups after marking phase.
   heap()->isolate()->global_handles()->RemoveObjectGroups();
   heap()->isolate()->global_handles()->RemoveImplicitRefGroups();
 
   // Flush code from collected candidates.
@@ skipping 1019 matching lines @@
 
   // Update pointer from the native contexts list.
   updating_visitor.VisitPointer(heap_->native_contexts_list_address());
 
   heap_->symbol_table()->Iterate(&updating_visitor);
 
   // Update pointers from external string table.
   heap_->UpdateReferencesInExternalStringTable(
       &UpdateReferenceInExternalStringTableEntry);
 
-  // Update pointers in the new error object list.
-  heap_->error_object_list()->UpdateReferences();
-
   if (!FLAG_watch_ic_patching) {
     // Update JSFunction pointers from the runtime profiler.
     heap()->isolate()->runtime_profiler()->UpdateSamplesAfterCompact(
         &updating_visitor);
   }
 
   EvacuationWeakObjectRetainer evacuation_object_retainer;
   heap()->ProcessWeakReferences(&evacuation_object_retainer);
 
   // Visit invalidated code (we ignored all slots on it) and clear mark-bits
@@ skipping 730 matching lines @@
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 
 
 } }  // namespace v8::internal