fixes #226 super == and fixes #227 escape \r \f

test/codegen/misc.dart

 // Copyright (c) 2015, 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.
 
 
 // Codegen dependency order test
 const UNINITIALIZED = const _Uninitialized();
 class _Uninitialized { const _Uninitialized(); }
 
 class Generic<T> {
   Type get type => Generic;
 }
 
+// super ==
+// https://github.com/dart-lang/dev_compiler/issues/226
+class Base {
+  int x = 1, y = 2;
+  operator==(obj) {
+    return obj is Base && obj.x == x && obj.y == y;
+  }
+}
+class Derived {
+  int z = 3;
+  operator==(obj) {
+    return obj is Derived && obj.z == z && super == obj;
+  }
+}
+
+// string escape tests
+// https://github.com/dart-lang/dev_compiler/issues/227
+bool _isWhitespace(String ch) =>
+    ch == ' ' || ch == '\n' || ch == '\r' || ch == '\t';
+
+const _escapeMap = const {
+  '\n': r'\n',
+  '\r': r'\r',
+  '\f': r'\f',
+  '\b': r'\b',
+  '\t': r'\t',
+  '\v': r'\v',
+  '\x7F': r'\x7F', // delete
+};
+
+
 main() {
   // Number literals in call expressions.
   print(1.toString());
   print(1.0.toString());
   print(1.1.toString());
 
   // Type literals, #184
   dynamic x = 42;
   print(x == dynamic);
   print(x == Generic);
 
   // Should be Generic<dynamic>
   print(new Generic<int>().type);
+
+  print(new Derived() == new Derived()); // true
 }