Implement aging of maps embedded in optimized code.

src/heap/incremental-marking.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/v8.h"
 
 #include "src/heap/incremental-marking.h"
 
 #include "src/code-stubs.h"
 #include "src/compilation-cache.h"
@@ skipping 564 matching lines @@
     // when we finish marking.
     MarkObjectGreyDoNotEnqueue(heap_->polymorphic_code_cache());
   }
 
   // Mark strong roots grey.
   IncrementalMarkingRootMarkingVisitor visitor(this);
   heap_->IterateStrongRoots(&visitor, VISIT_ONLY_STRONG);
 
   heap_->mark_compact_collector()->MarkWeakObjectToCodeTable();
 
+  heap_->IterateEmbeddedMapCache(&visitor);
+
   // Ready to start incremental marking.
   if (FLAG_trace_incremental_marking) {
     PrintF("[IncrementalMarking] Running\n");
   }
 }
 
 
 void IncrementalMarking::PrepareForScavenge() {
   if (!IsMarking()) return;
   NewSpacePageIterator it(heap_->new_space()->FromSpaceStart(),
@@ skipping 403 matching lines @@
 void IncrementalMarking::IncrementIdleMarkingDelayCounter() {
   idle_marking_delay_counter_++;
 }
 
 
 void IncrementalMarking::ClearIdleMarkingDelayCounter() {
   idle_marking_delay_counter_ = 0;
 }
 }
 }  // namespace v8::internal