73 lines
2.3 KiB
Java
73 lines
2.3 KiB
Java
/*
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* Copyright (c) 2024, Red Hat and/or its affiliates. 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 8335393
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* @summary C2: assert(!had_error) failed: bad dominance
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* @requires vm.compiler2.enabled
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* @run main/othervm -XX:-TieredCompilation -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:-UseLoopPredicate
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* -XX:LoopMaxUnroll=0 TestEmptyLoopDeadCast
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*/
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public class TestEmptyLoopDeadCast {
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public static void main(String[] args) {
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int[] array = new int[100];
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for (int i = 0; i < 20_000; i++) {
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test1Helper(1, 101, array);
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test1(0, array);
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test2Helper(0, -101, array);
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test2(0, array);
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}
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}
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private static int test1(int start, int[] array) {
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return test1Helper(start, 0, array);
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}
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private static int test1Helper(int start, int stop, int[] array) {
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if (array == null) {
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}
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int v = 0;
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for (int i = start; i < stop; i++) {
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v = array[i - 1];
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}
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return v;
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}
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private static int test2(int start, int[] array) {
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return test2Helper(start, -1, array);
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}
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private static int test2Helper(int start, int stop, int[] array) {
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if (array == null) {
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}
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int v = 0;
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for (int i = start-1; i > stop; i--) {
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v = array[-1 - i];
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}
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return v;
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}
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}
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