dart2js cps: Access to lazily initialized fields.

pkg/compiler/lib/src/tree_ir/tree_ir_builder.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.
 
 library tree_ir_builder;
 
 import '../dart2jslib.dart' as dart2js;
 import '../dart_types.dart';
 import '../elements/elements.dart';
 import '../cps_ir/cps_ir_nodes.dart' as cps_ir;
@@ skipping 649 matching lines @@
   Node visitTypeExpression(cps_ir.TypeExpression node) {
     return new TypeExpression(
         node.dartType,
         node.arguments.map(getVariableUse).toList());
   }
 
   Expression visitGetStatic(cps_ir.GetStatic node) {
     return new GetStatic(node.element, node.sourceInformation);
   }
 
+  Statement visitGetLazyStatic(cps_ir.GetLazyStatic node) {
+    // In the tree IR, GetStatic handles lazy fields because tree
+    // expressions are allowed to have side effects.
+    GetStatic value = new GetStatic(node.element, node.sourceInformation);
+    return continueWithExpression(node.continuation, value);
+  }
+
   Statement visitSetStatic(cps_ir.SetStatic node) {
     SetStatic setStatic = new SetStatic(
         node.element,
         getVariableUse(node.value),
         node.sourceInformation);
     return new ExpressionStatement(setStatic, visit(node.body));
   }
 }