1 /*
   2  * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8026844
  27  * @summary Test subtractExact as condition
  28  * @library /test/lib /
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management
  31  *
  32  * @run main compiler.intrinsics.mathexact.SubExactICondTest
  33  */
  34 
  35 package compiler.intrinsics.mathexact;
  36 
  37 public class SubExactICondTest {
  38   public static int result = 0;
  39 
  40   public static void main(String[] args) {
  41     for (int i = 0; i < 50000; ++i) {
  42       runTest();
  43     }
  44   }
  45 
  46   public static void runTest() {
  47     int i = 7;
  48     while (java.lang.Math.subtractExact(i, result) > -31361) {
  49         if ((java.lang.Math.subtractExact(i, i) & 1) == 1) {
  50             i -= 3;
  51         } else if ((i & 5) == 4) {
  52             i -= 7;
  53         } else if ((i & 0xf) == 6) {
  54             i -= 2;
  55         } else {
  56             i -= 1;
  57         }
  58         result += 2;
  59     }
  60   }
  61 }