Change the type inference for fields in dart2js

lib/compiler/implementation/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.
 
 class EnqueueTask extends CompilerTask {
   final Enqueuer codegen;
   final Enqueuer resolution;
 
   String get name => 'Enqueue';
 
   EnqueueTask(Compiler compiler)
     : codegen = new Enqueuer('codegen enqueuer', compiler,
                              compiler.backend.createItemCompilationContext),
       resolution = new Enqueuer('resolution enqueuer', compiler,
                                 compiler.backend.createItemCompilationContext),
       super(compiler) {
     codegen.task = this;
     resolution.task = this;
   }
 }
 
-class RecompilationQueue {
-  final Function itemCompilationContextCreator;
-  final Queue<WorkItem> queue;
-  final Set<Element> queueElements;
-  int processed = 0;
-
-  RecompilationQueue(ItemCompilationContext itemCompilationContextCreator())
-    : this.itemCompilationContextCreator = itemCompilationContextCreator,
-      queue = new Queue<WorkItem>(),
-      queueElements = new Set<Element>();
-
-  void add(Element element, TreeElements elements) {
-    if (queueElements.contains(element)) return;
-    queueElements.add(element);
-    queue.add(new WorkItem(element, elements, itemCompilationContextCreator()));
-  }
-
-  int get length => queue.length;
-
-  bool isEmpty() => queue.isEmpty();
-
-  WorkItem next() {
-    WorkItem item = queue.removeLast();
-    queueElements.remove(item.element);
-    processed++;
-    return item;
-  }
-}
-
 class Enqueuer {
   final String name;
   final Compiler compiler; // TODO(ahe): Remove this dependency.
   final Function itemCompilationContextCreator;
   final Map<String, Link<Element>> instanceMembersByName;
   final Set<ClassElement> seenClasses;
   final Universe universe;
   final Queue<WorkItem> queue;
 
   /**
    * Map from declaration elements to the [TreeElements] object holding the
    * resolution mapping for the element implementation.
    *
    * Invariant: Key elements are declaration elements.
    */
   final Map<Element, TreeElements> resolvedElements;
-  final RecompilationQueue recompilationCandidates;
 
   bool queueIsClosed = false;
   EnqueueTask task;
 
   Enqueuer(this.name, this.compiler,
            ItemCompilationContext itemCompilationContextCreator())
     : this.itemCompilationContextCreator = itemCompilationContextCreator,
       instanceMembersByName = new Map<String, Link<Element>>(),
       seenClasses = new Set<ClassElement>(),
       universe = new Universe(),
       queue = new Queue<WorkItem>(),
-      resolvedElements = new Map<Element, TreeElements>(),
-      recompilationCandidates =
-          new RecompilationQueue(itemCompilationContextCreator);
+      resolvedElements = new Map<Element, TreeElements>();
 
   bool get isResolutionQueue => compiler.enqueuer.resolution === this;
 
   TreeElements getCachedElements(Element element) {
     // TODO(ngeoffray): Get rid of this check.
     if (element.enclosingElement.isClosure()) {
       closureMapping.ClosureClassElement cls = element.enclosingElement;
       element = cls.methodElement;
     }
     Element owner = element.getOutermostEnclosingMemberOrTopLevel();
@@ skipping 11 matching lines @@
   }
 
   /**
    * Documentation wanted -- johnniwinther
    *
    * Invariant: [element] must be a declaration element.
    */
   void addToWorkList(Element element, [TreeElements elements]) {
     assert(invariant(element, element.isDeclaration));
     if (element.isForeign()) return;
-    if (compiler.phase == Compiler.PHASE_RECOMPILING) return;
     if (queueIsClosed) {
       if (isResolutionQueue && getCachedElements(element) !== null) return;
       compiler.internalErrorOnElement(element, "Work list is closed.");
     }
     if (!isResolutionQueue &&
         element.kind === ElementKind.GENERATIVE_CONSTRUCTOR) {
       registerInstantiatedClass(element.getEnclosingClass());
     }
     if (elements === null) {
       elements = getCachedElements(element);
@@ skipping 25 matching lines @@
    *
    * Invariant: [element] must be a declaration element.
    */
   void eagerRecompile(Element element) {
     assert(invariant(element, element.isDeclaration));
     universe.generatedCode.remove(element);
     universe.generatedBailoutCode.remove(element);
     addToWorkList(element);
   }
 
-  void registerRecompilationCandidate(Element element,
-                                      [TreeElements elements]) {
-    if (queueIsClosed) {
-      compiler.internalErrorOnElement(element, "$name work list is closed.");
-    }
-    recompilationCandidates.add(element, elements);
-  }
-
   void registerInstantiatedClass(ClassElement cls) {
     if (cls.isInterface()) {
       compiler.internalErrorOnElement(
           // Use the current element, as this is where cls is referenced from.
           compiler.currentElement,
           'Expected a class, but $cls is an interface.');
     }
     universe.instantiatedClasses.add(cls);
     onRegisterInstantiatedClass(cls);
   }
@@ skipping 216 matching lines @@
   }
 
   void forEach(f(WorkItem work)) {
     while (!queue.isEmpty()) {
       f(queue.removeLast()); // TODO(kasperl): Why isn't this removeFirst?
     }
   }
 
   String toString() => 'Enqueuer($name)';
 }