MapCache simplification. It is now a FixedArray that maps number of properties to a WeakCell with...

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 31d0a16dfb827b7fa14fcab61f14350d1fb48e15..d025b2482339da3cef73acefe2b4d2507be05a5e 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -3462,44 +3462,6 @@ class StringTable: public HashTable<StringTable,
 };
 
 
-class MapCacheShape : public BaseShape<HashTableKey*> {
- public:
-  static inline bool IsMatch(HashTableKey* key, Object* value) {
-    return key->IsMatch(value);
-  }
-
-  static inline uint32_t Hash(HashTableKey* key) {
-    return key->Hash();
-  }
-
-  static inline uint32_t HashForObject(HashTableKey* key, Object* object) {
-    return key->HashForObject(object);
-  }
-
-  static inline Handle<Object> AsHandle(Isolate* isolate, HashTableKey* key);
-
-  static const int kPrefixSize = 0;
-  static const int kEntrySize = 2;
-};
-
-
-// MapCache.
-//
-// Maps keys that are a fixed array of unique names to a map.
-// Used for canonicalize maps for object literals.
-class MapCache: public HashTable<MapCache, MapCacheShape, HashTableKey*> {
- public:
-  // Find cached value for a name key, otherwise return null.
-  Object* Lookup(FixedArray* key);
-  static Handle<MapCache> Put(
-      Handle<MapCache> map_cache, Handle<FixedArray> key, Handle<Map> value);
-  DECLARE_CAST(MapCache)
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(MapCache);
-};
-
-
 template <typename Derived, typename Shape, typename Key>
 class Dictionary: public HashTable<Derived, Shape, Key> {
  protected: