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

src/factory.h

 // Copyright 2014 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.
 
 #ifndef V8_FACTORY_H_
 #define V8_FACTORY_H_
 
 #include "src/isolate.h"
 
 namespace v8 {
@@ skipping 625 matching lines @@
   Handle<JSMessageObject> NewJSMessageObject(
       Handle<String> type,
       Handle<JSArray> arguments,
       int start_position,
       int end_position,
       Handle<Object> script,
       Handle<Object> stack_frames);
 
   Handle<DebugInfo> NewDebugInfo(Handle<SharedFunctionInfo> shared);
 
-  // Return a map using the map cache in the native context.
-  // The key the an ordered set of property names.
+  // Return a map for given number of properties using the map cache in the
+  // native context.
   Handle<Map> ObjectLiteralMapFromCache(Handle<Context> context,
-                                        Handle<FixedArray> keys);
+                                        int number_of_properties,
+                                        bool* is_result_from_cache);
 
   // Creates a new FixedArray that holds the data associated with the
   // atom regexp and stores it in the regexp.
   void SetRegExpAtomData(Handle<JSRegExp> regexp,
                          JSRegExp::Type type,
                          Handle<String> source,
                          JSRegExp::Flags flags,
                          Handle<Object> match_pattern);
 
   // Creates a new FixedArray that holds the data associated with the
@@ skipping 22 matching lines @@
   Handle<T> New(Handle<Map> map, AllocationSpace space);
 
   template<typename T>
   Handle<T> New(Handle<Map> map,
                 AllocationSpace space,
                 Handle<AllocationSite> allocation_site);
 
   // Creates a code object that is not yet fully initialized yet.
   inline Handle<Code> NewCodeRaw(int object_size, bool immovable);
 
-  // Create a new map cache.
-  Handle<MapCache> NewMapCache(int at_least_space_for);
-
-  // Update the map cache in the native context with (keys, map)
-  Handle<MapCache> AddToMapCache(Handle<Context> context,
-                                 Handle<FixedArray> keys,
-                                 Handle<Map> map);
-
   // Attempt to find the number in a small cache.  If we finds it, return
   // the string representation of the number.  Otherwise return undefined.
   Handle<Object> GetNumberStringCache(Handle<Object> number);
 
   // Update the cache with a new number-string pair.
   void SetNumberStringCache(Handle<Object> number, Handle<String> string);
 
   // Initializes a function with a shared part and prototype.
   // Note: this code was factored out of NewFunction such that other parts of
   // the VM could use it. Specifically, a function that creates instances of
@@ skipping 15 matching lines @@
   // Reinitialize a JSProxy into an (empty) JS object of respective type and
   // size, but keeping the original prototype.  The receiver must have at least
   // the size of the new object.  The object is reinitialized and behaves as an
   // object that has been freshly allocated.
   void ReinitializeJSProxy(Handle<JSProxy> proxy, InstanceType type, int size);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_FACTORY_H_