| /* |
| * Copyright (c) 2022, Arm Limited. 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. |
| */ |
| |
| /* |
| * @test |
| * @key stress randomness |
| * @bug 8291466 |
| * @summary Infinite loop in PhaseIterGVN::transform_old with -XX:+StressIGVN |
| * @requires vm.compiler2.enabled |
| * @run main/othervm -Xbatch -XX:-TieredCompilation |
| * -XX:+UnlockDiagnosticVMOptions -XX:+StressIGVN |
| * -XX:StressSeed=1 compiler.c2.TestMulNodeInfiniteGVN |
| */ |
| |
| package compiler.c2; |
| |
| public class TestMulNodeInfiniteGVN { |
| |
| private static int fun() { |
| int sum = 0; |
| for (int c = 0; c < 50000; c++) { |
| int x = 9; |
| while ((x += 2) < 12) { |
| for (int k = 1; k < 2; k++) { |
| sum += x * k; |
| } |
| } |
| int y = 11; |
| while ((y += 2) < 14) { |
| for (int k = 1; k < 2; k++) { |
| sum += y * k; |
| } |
| } |
| int z = 17; |
| while ((z += 2) < 20) { |
| for (int k = 1; k < 2; k++) { |
| sum += z * k; |
| } |
| } |
| } |
| return sum; |
| } |
| |
| public static void main(String[] args) { |
| fun(); |
| } |
| } |
