Deferred loading track type-dependencies for is, as and type-annotations.

pkg/compiler/lib/src/resolution/registry.dart

 // Copyright (c) 2014, 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.
 
 part of resolution;
 
 /// [ResolutionRegistry] collects all resolution information. It stores node
 /// related information in a [TreeElements] mapping and registers calls with
 /// [Backend], [World] and [Enqueuer].
 // TODO(johnniwinther): Split this into an interface and implementation class.
@@ skipping 380 matching lines @@
     backend.resolutionCallbacks.onTypeVariableBoundCheck(this);
   }
 
   void registerThrowNoSuchMethod() {
     backend.resolutionCallbacks.onThrowNoSuchMethod(this);
   }
 
   void registerIsCheck(DartType type) {
     worldImpact.registerCheckedType(type);
     backend.resolutionCallbacks.onIsCheck(type, this);
+    mapping.addRequiredType(type);
   }
 
   void registerAsCheck(DartType type) {
     registerIsCheck(type);
     backend.resolutionCallbacks.onAsCheck(type, this);
+    mapping.addRequiredType(type);
   }
 
   void registerClosure(LocalFunctionElement element) {
     world.registerClosure(element, this);
   }
 
   void registerSuperUse(Node node) {
     mapping.addSuperUse(node);
   }
 
@@ skipping 57 matching lines @@
   void registerConstSymbol(String name) {
     backend.registerConstSymbol(name, this);
   }
 
   void registerSymbolConstructor() {
     backend.resolutionCallbacks.onSymbolConstructor(this);
   }
 
   void registerInstantiatedType(InterfaceType type) {
     world.registerInstantiatedType(type, this);
+    mapping.addRequiredType(type);
   }
 
   void registerAbstractClassInstantiation() {
     backend.resolutionCallbacks.onAbstractClassInstantiation(this);
   }
 
   void registerNewSymbol() {
     backend.registerNewSymbol(this);
   }
 
   void registerRequiredType(DartType type, Element enclosingElement) {
     backend.registerRequiredType(type, enclosingElement);
+    mapping.addRequiredType(type);
   }
 
   void registerStringInterpolation() {
     backend.resolutionCallbacks.onStringInterpolation(this);
   }
 
   void registerFallThroughError() {
     backend.resolutionCallbacks.onFallThroughError(this);
   }
 
@@ skipping 58 matching lines @@
   }
 
   void registerAsyncMarker(FunctionElement element) {
     backend.registerAsyncMarker(element, world, this);
   }
 
   void registerAsyncForIn(AsyncForIn node) {
     backend.resolutionCallbacks.onAsyncForIn(node, this);
   }
 }