| /* |
| * Copyright (c) 2024, 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 |
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| * |
| */ |
| |
| /* |
| * @test |
| * @bug 8326638 |
| * @summary Test handling of irreducible loops in PhaseIdealLoop::remix_address_expressions. |
| * @run main/othervm -XX:-TieredCompilation -Xbatch |
| * -XX:CompileCommand=compileonly,TestRemixAddressExpressionsWithIrreducibleLoop::test |
| * TestRemixAddressExpressionsWithIrreducibleLoop |
| */ |
| |
| public class TestRemixAddressExpressionsWithIrreducibleLoop { |
| |
| public static void main(String[] args) { |
| test("4"); |
| } |
| |
| public static void test(String arg) { |
| for (int i = 0; i < 100_000; ++i) { |
| int j = 0; |
| while (true) { |
| boolean tmp = "1\ufff0".startsWith(arg, 2 - arg.length()); |
| if (j++ > 100) |
| break; |
| } |
| loop: |
| while (i >= 100) { |
| for (int i2 = 0; i2 < 1; i2 = 1) |
| if (j > 300) |
| break loop; |
| j++; |
| } |
| } |
| } |
| } |
