1 /* 2 * Copyright (c) 2013, 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 8028207 27 * @summary Verify that GVN doesn't mess up the two addExacts 28 * @compile GVNTest.java 29 * @run main GVNTest -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseMathExactIntrinsics 30 * 31 */ 32 33 public class GVNTest { 34 public static int result = 0; 35 public static int value = 93; 36 public static void main(String[] args) { 37 for (int i = 0; i < 50000; ++i) { 38 result = runTest(value + i); 39 result = runTest(value + i); 40 result = runTest(value + i); 41 result = runTest(value + i); 42 result = runTest(value + i); 43 } 44 } 45 46 public static int runTest(int value) { 47 int v = value + value; 48 int sum = 0; 49 if (v < 4032) { 50 for (int i = 0; i < 1023; ++i) { 51 sum += Math.addExact(value, value); 52 } 53 } else { 54 for (int i = 0; i < 321; ++i) { 55 sum += Math.addExact(value, value); 56 } 57 } 58 return sum + v; 59 } 60 }