bug 451673 - JavaScript Test by Boris Zbarsky.

js/tests/js1_8_1/trace/regress-451673.js

@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is JavaScript Engine testing utilities.
+ *
+ * The Initial Developer of the Original Code is
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2008
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Boris Zbarsky
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+var gTestfile = 'regress-451673.js';
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 451673;
+var summary = 'TM: Tracing prime number generation';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  function doTest(enablejit)
+  {
+    if (enablejit)
+      jit(true);
+    else
+      jit(false);
+
+    var n = 1000000;
+    var start = new Date();
+    var i=0;
+    var j=0;
+    var numprimes=0;
+    var limit=0;
+    numprimes = 1; // 2 is prime
+    var mceil = Math.floor;
+    var msqrt = Math.sqrt;
+    var isPrime = 1;
+
+    for (i = 3; i<= n; i+=2)
+    {
+	    isPrime=1;
+	    limit = mceil(msqrt(i)+1) + 1;
+
+	    for (j = 3; j < limit; j+=2)
+      {
+		    if (i % j == 0)
+        {
+			    isPrime = 0;
+			    break;
+        }
+      }
+
+	    if (isPrime)
+      {
+		    numprimes ++;
+      }
+    }
+
+    var end = new Date();
+
+    var timetaken = end - start;
+    timetaken = timetaken / 1000;
+
+    if (enablejit)
+      jit(false);
+
+    print((enablejit ? '    JIT' : 'Non-JIT') + ": Number of primes up to: " + n + " is " + numprimes + ", counted in " + timetaken + " secs.");
+
+    return timetaken;
+  }
+
+  var timenonjit = doTest(false);
+  var timejit    = doTest(true);
+
+  expect = true;
+  actual = timejit < timenonjit/4;
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}