| /* |
| * Copyright (c) 2020, 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 8238385 |
| * @summary CTW: C2 (Shenandoah) compilation fails with "Range check dependent CastII node was not removed" |
| * @key gc |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * @modules java.base/jdk.internal.misc:+open |
| * |
| * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:-TieredCompilation -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC |
| * FoldIfAfterExpansion |
| * |
| */ |
| |
| import jdk.internal.misc.Unsafe; |
| |
| public class FoldIfAfterExpansion { |
| private static int[] field1 = new int[100]; |
| private static int[] field2 = new int[100]; |
| private static int[] field3; |
| private static volatile int barrier; |
| |
| static final jdk.internal.misc.Unsafe UNSAFE = Unsafe.getUnsafe(); |
| |
| public static void main(String[] args) { |
| for (int i = 0; i < 20_000; i++) { |
| test(true, 10, false, true); |
| test(false, 10, false, false); |
| } |
| } |
| |
| private static Object test(boolean flag, int i, boolean flag2, boolean flag3) { |
| int[] array; |
| if (flag) { |
| barrier = 1; |
| array = field1; |
| final int length = array.length; |
| if (flag2) { |
| field3 = array; |
| } |
| } else { |
| barrier = 1; |
| array = field1; |
| final int length = array.length; |
| if (flag2) { |
| field3 = array; |
| } |
| } |
| |
| array = field1; |
| |
| if (flag3) { |
| if (i < 0 || i >= array.length) { |
| throw new RuntimeException(); |
| } |
| long l = (long)i; |
| l = l * UNSAFE.ARRAY_INT_INDEX_SCALE + UNSAFE.ARRAY_INT_BASE_OFFSET; |
| UNSAFE.putInt(array, l, i); |
| } else { |
| if (i < 0 || i >= array.length) { |
| throw new RuntimeException(); |
| } |
| long l = (long)i; |
| l = l * UNSAFE.ARRAY_INT_INDEX_SCALE + UNSAFE.ARRAY_INT_BASE_OFFSET; |
| UNSAFE.putInt(array, l, i); |
| } |
| |
| return array; |
| } |
| } |