Fixes ABI bug in MIPS.

samples/sample_extension/test_sample_synchronous_extension.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.
 
 library test_sample_extension;
 
 import 'sample_synchronous_extension.dart';
 
 void check(bool condition, String message) {
   if (!condition) {
     throw new StateError(message);
   }
 }
 
-void main() {
+void checkSystemRand() {
   systemSrand(17);
   var x1 = systemRand();
   var x2 = systemRand();
   var x3 = systemRand();
   check(x1 != x2, "x1 != x2");
   check(x1 != x3, "x1 != x3");
   check(x2 != x3, "x2 != x3");
   systemSrand(17);
   check(x1 == systemRand(), "x1 == systemRand()");
   check(x2 == systemRand(), "x2 == systemRand()");
   check(x3 == systemRand(), "x3 == systemRand()");
   systemSrand(18);
   check(x1 != systemRand(), "x1 != systemRand()");
   check(x2 != systemRand(), "x2 != systemRand()");
   check(x3 != systemRand(), "x3 != systemRand()");
 }
+
+void checkNoScopeSystemRand() {
+  systemSrand(17);
+  var x1 = noScopeSystemRand();
+  var x2 = noScopeSystemRand();
+  var x3 = noScopeSystemRand();
+  check(x1 != x2, "x1 != x2");
+  check(x1 != x3, "x1 != x3");
+  check(x2 != x3, "x2 != x3");
+  systemSrand(17);
+  check(x1 == noScopeSystemRand(), "x1 == noScopeSystemRand()");
+  check(x2 == noScopeSystemRand(), "x2 == noScopeSystemRand()");
+  check(x3 == noScopeSystemRand(), "x3 == noScopeSystemRand()");
+  systemSrand(18);
+  check(x1 != noScopeSystemRand(), "x1 != noScopeSystemRand()");
+  check(x2 != noScopeSystemRand(), "x2 != noScopeSystemRand()");
+  check(x3 != noScopeSystemRand(), "x3 != noScopeSystemRand()");
+}
+
+void main() {
+  checkSystemRand();
+  checkNoScopeSystemRand();
+}