57 lines
2.0 KiB
Java
57 lines
2.0 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 8323274
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* @summary converting an array copy to a series of loads/stores add loads that can float
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* @run main/othervm -XX:-UseOnStackReplacement -XX:-TieredCompilation -XX:-BackgroundCompilation TestArrayAccessAboveRCForArrayCopyLoad
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*/
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public class TestArrayAccessAboveRCForArrayCopyLoad {
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public static void main(String[] args) {
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int[] array = new int[10];
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for (int i = 0; i < 20_000; i++) {
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test(array, 0, array, 1, false);
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test(array, 0, array, 1, true);
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}
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try {
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test(array, -1, array, 0, true);
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} catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) {
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}
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}
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private static void test(int[] src, int srcPos, int[] dst, int dstPos, boolean flag) {
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if (src == null) {
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}
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if (srcPos < dstPos) {
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if (flag) {
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System.arraycopy(src, srcPos, dst, dstPos, 2);
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} else {
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System.arraycopy(src, srcPos, dst, dstPos, 2);
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}
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}
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}
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}
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