Turn on parallel recompilation for tests that assert optimization status.

test/mjsunit/constant-folding-2.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 16 matching lines @@
 
 
 // Flags: --nodead-code-elimination --fold-constants --allow-natives-syntax
 
 function test(f) {
   f();
   f();
   %OptimizeFunctionOnNextCall(f);
   f();
   // Assert that there has been no deopt.
-  assertTrue(%GetOptimizationStatus(f) != 2);
+  assertOptimized(f);
 }
 
 test(function add() {
   assertEquals(2, 1 + 1);
   assertEquals(2.5, 1.25 + 1.25);
   assertEquals("Infinity", String(Infinity + Infinity));
   assertEquals("Infinity", String(Infinity + 3));
   assertEquals("NaN", String(Infinity + (-Infinity)));
   assertEquals("NaN", String(NaN + 2));
   assertEquals("-Infinity", String(1 / (-0.0 + (-0.0))));
@@ skipping 210 matching lines @@
 });
 
 
 test(function int32Mod() {
   assertEquals(-0, -2147483648 % (-1));
 });
 
 test(function int32Div() {
   assertEquals(2147483648, -2147483648 / (-1));
 });