More tests updated to optimize code (Part 2).

tests/language/optimized_hoisting_checked_mode_assert_test.dart

Index: tests/language/optimized_hoisting_checked_mode_assert_test.dart
===================================================================
--- tests/language/optimized_hoisting_checked_mode_assert_test.dart	(revision 24922)
+++ tests/language/optimized_hoisting_checked_mode_assert_test.dart	(working copy)
@@ -1,6 +1,7 @@
 // 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.
+// VMOptions=--optimization-counter-threshold=10 --no-use-osr
 
 import "package:expect/expect.dart";
 
@@ -15,7 +16,7 @@
 }
 
 main() {
-  for (var i=0; i<10000; i++) foo(1.0, 10);
+  for (var i = 0; i < 20; i++) foo(1.0, 10);
   Expect.equals(0, foo(1.0, 10));
   Expect.equals(0, foo(2, 0));  // Must not throw in checked mode.
 }