[tests] Make assertOptimized()/assertUnoptimized() great again.

test/mjsunit/never-optimize.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 12 matching lines @@
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Flags: --allow-natives-syntax
 
 function o1() {
 }
 
-if (%GetOptimizationStatus(o1) != 4) {
-  // 4 == optimization disabled.
+var opt_status = %GetOptimizationStatus(o1);
+if ((opt_status & V8OptimizationStatus.kNeverOptimize) === 0) {
   o1(); o1();
   %OptimizeFunctionOnNextCall(o1);
   o1();
 
   // Check that the given function was optimized.
   assertOptimized(o1);
 
   // Test the %NeverOptimizeFunction runtime call.
   %NeverOptimizeFunction(u1);
   function u1() {
   }
 
   function u2() {
     u1();
   }
 
   u1(); u1();
   u2(); u2();
 
   %OptimizeFunctionOnNextCall(u1);
   %OptimizeFunctionOnNextCall(u2);
 
   u1(); u1();
   u2(); u2();
 
-  // 2 => not optimized.
   assertUnoptimized(u1);
   assertOptimized(u2);
 }