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67 lines
2.2 KiB
Java
67 lines
2.2 KiB
Java
/*
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* Copyright (c) 2025, 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 8341976
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* @summary C2: use_mem_state != load->find_exact_control(load->in(0)) assert failure
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* @run main/othervm -XX:-BackgroundCompilation TestSunkLoadAntiDependency
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* @run main TestSunkLoadAntiDependency
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*/
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public class TestSunkLoadAntiDependency {
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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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for (int i = 0; i < 20_000; i++) {
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test1(array, 2);
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inlined1(array, 100, 0, 100, array);
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}
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}
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private static int test1(int[] src, int length) {
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length = Integer.max(1, length);
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int[] dst = new int[2];
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int stop;
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for (stop = 0; stop < 10; stop++) {
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for (int i = 0; i < 10; i++) {
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}
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}
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int start;
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for (start = 0; start < 9; start++) {
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for (int i = 0; i < 10; i++) {
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}
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}
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inlined1(src, length, start, stop, dst);
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return dst[0] + dst[1];
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}
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private static void inlined1(int[] src, int length, int start, int stop, int[] dst) {
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for (int i = start; i < stop; i++) {
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volatileField = 42;
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System.arraycopy(src, 0, dst, 0, length);
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}
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}
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}
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