92 lines
3.0 KiB
Java
92 lines
3.0 KiB
Java
/*
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* Copyright (c) 2020, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8238385
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* @summary CTW: C2 (Shenandoah) compilation fails with "Range check dependent CastII node was not removed"
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* @requires vm.gc.Shenandoah
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* @modules java.base/jdk.internal.misc:+open
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*
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* @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:-TieredCompilation -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC
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* FoldIfAfterExpansion
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*
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*/
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import jdk.internal.misc.Unsafe;
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public class FoldIfAfterExpansion {
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private static int[] field1 = new int[100];
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private static int[] field2 = new int[100];
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private static int[] field3;
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private static volatile int barrier;
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static final jdk.internal.misc.Unsafe UNSAFE = Unsafe.getUnsafe();
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public static void main(String[] args) {
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for (int i = 0; i < 20_000; i++) {
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test(true, 10, false, true);
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test(false, 10, false, false);
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}
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}
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private static Object test(boolean flag, int i, boolean flag2, boolean flag3) {
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int[] array;
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if (flag) {
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barrier = 1;
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array = field1;
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final int length = array.length;
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if (flag2) {
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field3 = array;
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}
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} else {
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barrier = 1;
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array = field1;
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final int length = array.length;
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if (flag2) {
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field3 = array;
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}
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}
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array = field1;
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if (flag3) {
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if (i < 0 || i >= array.length) {
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throw new RuntimeException();
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}
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long l = (long)i;
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l = l * UNSAFE.ARRAY_INT_INDEX_SCALE + UNSAFE.ARRAY_INT_BASE_OFFSET;
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UNSAFE.putInt(array, l, i);
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} else {
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if (i < 0 || i >= array.length) {
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throw new RuntimeException();
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}
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long l = (long)i;
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l = l * UNSAFE.ARRAY_INT_INDEX_SCALE + UNSAFE.ARRAY_INT_BASE_OFFSET;
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UNSAFE.putInt(array, l, i);
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}
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return array;
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}
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}
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