Migrate block 43.

tests/language/bailout7_test.dart

-// Copyright (c) 2013, 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.
-
-import "package:expect/expect.dart";
-
-// Test to make sure the do/while loop exit condition is generated.
-
-var global;
-
-class A {
-  var array;
-
-  initArray() {
-    if (global[0] == null) {
-      return [2];
-    } else {
-      var map = new Map();
-      map[0] = 2;
-      return map;
-    }
-  }
-
-  bar() {
-    array = initArray();
-    var element;
-    do {
-      element = array[0]; // bailout here
-      if (element is Map) continue;
-      if (element == null) break;
-    } while (element != 2);
-    return global[0]; // bailout here
-  }
-}
-
-void main() {
-  global = [2];
-  for (int i = 0; i < 2; i++) {
-    Expect.equals(2, new A().bar());
-  }
-
-  global = new Map();
-  global[0] = 2;
-  for (int i = 0; i < 2; i++) {
-    Expect.equals(2, new A().bar());
-  }
-}