Turn on parallel recompilation for tests that assert optimization status.

test/mjsunit/regress/regress-embedded-cons-string.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: --fold-constants --nodead-code-elimination
 // Flags: --expose-gc --allow-natives-syntax
 // Flags: --parallel-recompilation --parallel-recompilation-delay=300
 
 if (!%IsParallelRecompilationSupported()) {
   print("Parallel recompilation is disabled. Skipping this test.");
   quit();
 }
 
-function assertUnoptimized(fun) {
-  assertTrue(%GetOptimizationStatus(fun) != 1);
-}
-
 function test(fun) {
   fun();
   fun();
+  // Mark for parallel optimization.
   %OptimizeFunctionOnNextCall(fun, "parallel");
-  fun();  // Trigger optimization in the background.
-  gc();   // Tenure cons string.
-  assertUnoptimized(fun);      // Compilation not complete yet.
-  %CompleteOptimization(fun);  // Compilation embeds tenured cons string.
-  gc();   // Visit embedded cons string during mark compact.
+  //Trigger optimization in the background.
+  fun();
+  //Tenure cons string.
+  gc();
+  // In the mean time, parallel recompiling is not complete yet.
+  assertUnoptimized(fun, "no sync");
+  // Parallel recompilation eventually finishes and embeds tenured cons string.
+  assertOptimized(fun, "sync");
+  //Visit embedded cons string during mark compact.
+  gc();
 }
 
 function f() {
   return "abcdefghijklmn" + "123456789";
 }
 
 function g() {
   return "abcdefghijklmn\u2603" + "123456789";
 }
 
 function h() {
   return "abcdefghijklmn\u2603" + "123456789\u2604";
 }
 
 test(f);
 test(g);
 test(h);