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107 lines
3.2 KiB
Java
107 lines
3.2 KiB
Java
/*
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* Copyright (c) 2024, 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 8332827
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* @summary [REDO] C2: crash in compiled code because of dependency on removed range check CastIIs
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*
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* @run main/othervm -XX:-TieredCompilation -XX:-UseOnStackReplacement -XX:-BackgroundCompilation TestRangeCheckCastIISplitThruPhi
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* @run main TestRangeCheckCastIISplitThruPhi
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*
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*/
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import java.util.Arrays;
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public class TestRangeCheckCastIISplitThruPhi {
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private static volatile int volatileField;
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public static void main(String[] args) {
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int[] array = new int[100];
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int[] baseline = null;
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for (int i = 0; i < 20_000; i++) {
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Arrays.fill(array, 0);
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test1(array);
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if (baseline == null) {
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baseline = array.clone();
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} else {
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boolean failures = false;
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for (int j = 0; j < array.length; j++) {
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if (array[j] != baseline[j]) {
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System.out.println("XXX @" + j + " " + array[j] + " != " + baseline[j]);
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failures = true;
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}
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}
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if (failures) {
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throw new RuntimeException();
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}
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}
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test2(array, true);
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test2(array, false);
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}
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}
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private static void test1(int[] array) {
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int[] array2 = new int[100];
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int j = 4;
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int i = 3;
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int k;
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for (k = 1; k < 2; k *= 2) {
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}
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int stride = k / 2;
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do {
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synchronized (new Object()) {
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}
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array2[j-1] = 42;
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array[j+1] = 42;
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j = i;
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i -= stride;
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} while (i >= 0);
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}
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private static void test2(int[] array, boolean flag) {
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int[] array2 = new int[100];
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int j = 4;
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int i = 3;
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int k;
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for (k = 1; k < 2; k *= 2) {
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}
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int stride = k / 2;
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if (flag) {
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volatileField = 42;
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array[0] = 42;
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} else {
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do {
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synchronized (new Object()) {
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}
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array2[j - 1] = 42;
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array[j + 1] = 42;
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j = i;
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i -= stride;
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} while (i >= 0);
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}
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}
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}
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