Add VMOptions to optimize tests that need to be (Part I).

tests/language/allocation_sinking_vm_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.
 // Test allocation sinking optimization.
+// VMOptions=--optimization-counter-threshold=10 --no-use-osr
 
 import 'package:expect/expect.dart';
 
 class Point {
   var x, y;
 
   Point(this.x, this.y);
 
   operator * (other) {
     return x * other.x + y * other.y;
@@ skipping 91 matching lines @@
 class WithFinal {
   final _x;
   WithFinal(this._x);
 }
 
 testInitialValueForFinalField(x) {
   new WithFinal(x);
 }
 
 testFinalField() {
-  for (var i = 0; i < 10000; i++) {
+  for (var i = 0; i < 100; i++) {
    testInitialValueForFinalField(1);
   }
 }
 
 class V {
   var x = 0;
 }
 
 test_vm_field() {
   var obj;
   inner() => obj.x = 42;
   var a = new V();
   obj = a;
   var t1 = a.x;
   var t2 = inner();
   return a.x + t1 + t2;
 }
 
 testVMField() {
   Expect.equals(84, test_vm_field());
-  for (var i=0; i<15000; i++) test_vm_field();
+  for (var i = 0; i < 100; i++) test_vm_field();
   Expect.equals(84, test_vm_field());
 }
 
 main() {
   var c = new C(new Point(0.1, 0.2));
 
   // Compute initial values.
   final x0 = test1(c, 11.11, 22.22);
   final y0 = testForwardingThroughEffects(c, 11.11, 22.22);
   final z0 = testIdentity(c.p);
 
   // Force optimization.
-  for (var i = 0; i < 10000; i++) {
+  for (var i = 0; i < 100; i++) {
     test1(c, i.toDouble(), i.toDouble());
     testForwardingThroughEffects(c, i.toDouble(), i.toDouble());
     testIdentity(c.p);
     foo2();
     Expect.equals(10, foo3(5));
   }
   Expect.equals(0.0, foo3(0.5));
 
   // Test returned value after optimization.
   final x1 = test1(c, 11.11, 22.22);
@@ skipping 18 matching lines @@
   // Test that identity of materialized objects is preserved correctly and
   // no copies are materialized.
   final z1 = testIdentity(c.p);
   final z2 = testIdentity(new F(c.p));
   Expect.equals(z0, z1);
   Expect.equals(z0, z2);
 
   testFinalField();
   testVMField();
 }