| /* |
| * Copyright (c) 2024, Red Hat, Inc. 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 |
| * @bug 8342330 |
| * @summary C2: "node pinned on loop exit test?" assert failure |
| * @requires vm.flavor == "server" |
| * |
| * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:-TieredCompilation |
| * -XX:-UseLoopPredicate -XX:LoopMaxUnroll=0 TestSunkRangeFromPreLoopRCE |
| * |
| */ |
| |
| |
| import java.util.Arrays; |
| |
| public class TestSunkRangeFromPreLoopRCE { |
| private static int[] array = new int[1000]; |
| private static A objectField = new A(42); |
| |
| public static void main(String[] args) { |
| boolean[] allTrue = new boolean[1000]; |
| Arrays.fill(allTrue, true); |
| boolean[] allFalse = new boolean[1000]; |
| for (int i = 0; i < 20_000; i++) { |
| test1(array.length/4, allTrue, 1, 0); |
| test1(array.length/4, allFalse, 1, 0); |
| } |
| } |
| |
| private static int test1(int stop, boolean[] flags, int otherScale, int x) { |
| int scale; |
| for (scale = 0; scale < 4; scale++) { |
| for (int i = 0; i < 10; i++) { |
| |
| } |
| } |
| if (array == null) { |
| } |
| int v = 0; |
| for (int i = 0; i < stop; i++) { |
| v += array[i]; |
| v += array[scale * i]; |
| if (i * scale + (objectField.intField + 1) == x) { |
| } |
| v += (scale - 4) * (x-objectField.intField); |
| if (flags[i]) { |
| return (x-objectField.intField); |
| } |
| } |
| return v; |
| } |
| |
| private static class A { |
| A(int field) { |
| intField = field; |
| } |
| public int intField; |
| } |
| } |
