jdk8-mips64-public/nashorn: test/examples/charcodeat-benchmark.js@d79265f2fa92 (annotated)

test/examples/charcodeat-benchmark.js@d79265f2fa92 (annotated)

test/examples/charcodeat-benchmark.js

Thu, 25 Sep 2014 15:53:47 +0200

author: lagergren
date: Thu, 25 Sep 2014 15:53:47 +0200
changeset 1028: d79265f2fa92
permissions: -rw-r--r--

8025435: Optimistic builtins support, implemented initial optimistic versions of push, pop, and charCodeAt
Reviewed-by: hannesw, attila, sundar

 /*
  * Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 /**
  * Simple benchmark to measure charCodeAt specialized method performance
  */
 var str = "sghjkdsfkjghsdfjkfkjdfkjdfjkdfjkfdjkfdkfldjfhdfpkjdhafgksdjfgldfgjldfkjgdlfjgldkfjgkldfj";
 var RESULT1 = 9187;
 var RESULT2 = 1496;
 function f() {
     var len = str.length;
     var c = 0;
     for (var i = 0; i < len; i++) {
 	c += str.charCodeAt(i);
     }
     return c;
 }
 function bench(res) {
     var d = new Date;
     var sum = 0;
     for (var i = 0; i < 1e6; i++) {
 	sum |= f();
     }
     if (sum == res) {
 	print("Verified OK");
     } else {
 	print("Verification failed " + sum + " should be " + res);
     }
     print((new Date - d) + " ms");
 }
 bench(RESULT1);
 print("Replacing charCodeAt... ");
 String.prototype.charCodeAt = function() { return 17; }
 bench(RESULT2);
 print("Done");