Cache lookups at megamorphic call sites in optimized code.

runtime/vm/isolate.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/isolate.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "lib/mirrors.h"
 #include "vm/compiler_stats.h"
@@ skipping 452 matching lines @@
                                   bool visit_prologue_weak_handles,
                                   bool validate_frames) {
   ASSERT(visitor != NULL);
 
   // Visit objects in the object store.
   object_store()->VisitObjectPointers(visitor);
 
   // Visit objects in the class table.
   class_table()->VisitObjectPointers(visitor);
 
+  // Visit objects in the megamorphic cache.
+  megamorphic_cache_table()->VisitObjectPointers(visitor);
+
   // Visit objects in per isolate stubs.
   StubCode::VisitObjectPointers(visitor);
 
   // Visit objects in zones.
   current_zone()->VisitObjectPointers(visitor);
 
   // Iterate over all the stack frames and visit objects on the stack.
   StackFrameIterator frames_iterator(validate_frames);
   StackFrame* frame = frames_iterator.NextFrame();
   while (frame != NULL) {
@@ skipping 18 matching lines @@
 
 
 void Isolate::VisitWeakPersistentHandles(HandleVisitor* visitor,
                                          bool visit_prologue_weak_handles) {
   if (api_state() != NULL) {
     api_state()->VisitWeakHandles(visitor, visit_prologue_weak_handles);
   }
 }
 
 }  // namespace dart