Do not treat elements of lists allocated through new List() and new List.filled() as potentially nu…

sdk/lib/_internal/compiler/implementation/elements/elements.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 elements;
 
 
 import 'modelx.dart';
 import '../tree/tree.dart';
 import '../util/util.dart';
@@ skipping 508 matching lines @@
   }
 
   static bool isGrowableListConstructorCall(Element element,
                                             Send node,
                                             Compiler compiler) {
     return element == compiler.unnamedListConstructor
         && node.isCall
         && node.arguments.isEmpty;
   }
 
+  static bool isFilledListConstructorCall(Element element,
+                                          Send node,
+                                          Compiler compiler) {
+    return element == compiler.filledListConstructor
+        && node.isCall
+        && !node.arguments.isEmpty
+        && !node.arguments.tail.isEmpty
+        && node.arguments.tail.tail.isEmpty;
+  }
+
   static bool switchStatementHasContinue(SwitchStatement node,
                                          TreeElements elements) {
     for (SwitchCase switchCase in node.cases) {
       for (Node labelOrCase in switchCase.labelsAndCases) {
         Node label = labelOrCase.asLabel();
         if (label != null) {
           LabelElement labelElement = elements[label];
           if (labelElement != null && labelElement.isContinueTarget) {
             return true;
           }
@@ skipping 375 matching lines @@
   int get resolutionState;
   Token get beginToken;
   Token get endToken;
 
   // TODO(kasperl): Try to get rid of these.
   void set annotatedElement(Element value);
   void set resolutionState(int value);
 
   MetadataAnnotation ensureResolved(Compiler compiler);
 }