3789983e89
Reviewed-by: darcy, ihse
107 lines
3.0 KiB
Java
107 lines
3.0 KiB
Java
/*
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* Copyright (c) 2011, Oracle 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 7044738
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* @summary Loop unroll optimization causes incorrect result
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*
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* @run main/othervm -Xbatch compiler.loopopts.Test7044738
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*/
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package compiler.loopopts;
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public class Test7044738 {
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private static final int INITSIZE = 10000;
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public int d[] = {1, 2, 3, 4};
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public int i, size;
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private static int iter = 5;
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boolean done() {
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return (--iter > 0);
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}
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public static void main(String args[]) {
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Test7044738 t = new Test7044738();
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t.test();
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}
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int test() {
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while (done()) {
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size = INITSIZE;
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for (i = 0; i < size; i++) {
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d[0] = d[1]; // 2
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d[1] = d[2]; // 3
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d[2] = d[3]; // 4
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d[3] = d[0]; // 2
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d[0] = d[1]; // 3
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d[1] = d[2]; // 4
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d[2] = d[3]; // 2
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d[3] = d[0]; // 3
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d[0] = d[1]; // 4
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d[1] = d[2]; // 2
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d[2] = d[3]; // 3
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d[3] = d[0]; // 4
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d[0] = d[1]; // 2
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d[1] = d[2]; // 3
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d[2] = d[3]; // 4
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d[3] = d[0]; // 2
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d[0] = d[1]; // 3
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d[1] = d[2]; // 4
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d[2] = d[3]; // 2
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d[3] = d[0]; // 3
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d[0] = d[1]; // 4
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d[1] = d[2]; // 2
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d[2] = d[3]; // 3
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d[3] = d[0]; // 4
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d[0] = d[1]; // 2
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d[1] = d[2]; // 3
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d[2] = d[3]; // 4
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d[3] = d[0]; // 2
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d[0] = d[1]; // 3
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d[1] = d[2]; // 4
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d[2] = d[3]; // 2
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d[3] = d[0]; // 3
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}
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// try to defeat dead code elimination
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if (d[0] == d[1]) {
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System.out.println("test failed: iter=" + iter + " i=" + i + " d[] = { " + d[0] + ", " + d[1] + ", " + d[2] + ", " + d[3] + " } ");
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System.exit(97);
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}
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}
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return d[3];
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}
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}
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