Cache lookups at megamorphic call sites in optimized code.

runtime/vm/raw_object.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/raw_object.h"
 
 #include "vm/class_table.h"
 #include "vm/freelist.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
@@ skipping 527 matching lines @@
 
 
 intptr_t RawICData::VisitICDataPointers(RawICData* raw_obj,
                                         ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return ICData::InstanceSize();
 }
 
 
+intptr_t RawMegamorphicCache::VisitMegamorphicCachePointers(
+    RawMegamorphicCache* raw_obj,
+    ObjectPointerVisitor* visitor) {
+  visitor->VisitPointers(raw_obj->from(), raw_obj->to());
+  return MegamorphicCache::InstanceSize();
+}
+
+
 intptr_t RawSubtypeTestCache::VisitSubtypeTestCachePointers(
     RawSubtypeTestCache* raw_obj, ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   RawSubtypeTestCache* obj = raw_obj->ptr();
   visitor->VisitPointer(reinterpret_cast<RawObject**>(&obj->cache_));
   return SubtypeTestCache::InstanceSize();
 }
 
 
 intptr_t RawError::VisitErrorPointers(RawError* raw_obj,
@@ skipping 404 matching lines @@
 
 intptr_t RawWeakProperty::VisitWeakPropertyPointers(
     RawWeakProperty* raw_obj, ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   ASSERT(raw_obj->IsHeapObject());
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return WeakProperty::InstanceSize();
 }
 
 }  // namespace dart