Remove invalidated elements from enqueuer.

pkg/compiler/lib/src/enqueue.dart

 // 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.
 
 library dart2js.enqueue;
 
 import 'dart:collection' show
     Queue;
 
 import 'common.dart';
@@ skipping 707 matching lines @@
   }
 
   /// Log summary specific to the concrete enqueuer.
   void _logSpecificSummary(log(message));
 
   String toString() => 'Enqueuer($name)';
 
   void forgetElement(Element element) {
     universe.forgetElement(element, compiler);
     _processedClasses.remove(element);
+    instanceMembersByName[element.name]?.remove(element);
+    instanceFunctionsByName[element.name]?.remove(element);
   }
 }
 
 /// [Enqueuer] which is specific to resolution.
 class ResolutionEnqueuer extends Enqueuer {
   /// All declaration elements that have been processed by the resolver.
   final Set<AstElement> processedElements;
 
   final Queue<ResolutionWorkItem> queue;
 
@@ skipping 255 matching lines @@
       }
     });
     return true;
   }
 
   void processWorkItem(void f(WorkItem work), WorkItem work) {
     f(work);
   }
 }
 
 void removeFromSet(Map<String, Set<Element>> map, Element element) {

[ahe, 2016/01/18 06:33:05]

It's possible to remove this method now that we have the ?. syntax.

   Set<Element> set = map[element.name];
   if (set == null) return;
   set.remove(element);
 }
 
 /// Strategy used by the enqueuer to populate the world.
 // TODO(johnniwinther): Merge this interface with [QueueFilter].
 class EnqueuerStrategy {
   const EnqueuerStrategy();
 
@@ skipping 18 matching lines @@
   @override
   void processStaticUse(Enqueuer enqueuer, StaticUse staticUse) {
     enqueuer.registerStaticUseInternal(staticUse);
   }
 
   @override
   void processDynamicUse(Enqueuer enqueuer, DynamicUse dynamicUse) {
     enqueuer.handleUnseenSelectorInternal(dynamicUse);
   }
 }