hotspot/test/compiler/6636138/Test1.java
author michaelm
Wed, 21 Dec 2011 10:06:32 +0000
changeset 11355 c2cb710f1bdd
parent 5547 f4b087cbb361
child 15864 2757a5eae916
permissions -rw-r--r--
7078386: NetworkInterface.getNetworkInterfaces() may return corrupted results on linux Reviewed-by: michaelm, alanb, chegar Contributed-by: brandon.passanisi@oracle.com
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/*
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 * Copyright (c) 2009, 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 6636138
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 * @summary SuperWord::co_locate_pack(Node_List* p) generates memory graph that leads to memory order violation.
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 *
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 * @run main/othervm -server -Xbatch -XX:CompileOnly=Test1.init Test1
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 */
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public class Test1 {
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    public static void init(int src[], int [] dst, int[] ref) {
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        // initialize the arrays
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        for (int i =0; i<src.length; i++) {
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            src[i] =  i;
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            dst[i] = 2;      // yes, dst[i] needed(otherwise src[i] will be replaced with i)
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            ref[i] = src[i]; // src[i] depends on the store src[i]
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        }
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    }
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    public static void verify(int src[], int[] ref) {
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        // check whether src and ref are equal
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        for (int i = 0; i < src.length; i++) {
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            if (src[i] != ref[i]) {
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                System.out.println("Error: src and ref don't match at " + i);
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                System.exit(97);
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            }
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        }
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    }
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    public static void test() {
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        int[] src = new int[34];
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        int[] dst = new int[34];
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        int[] ref = new int[34];
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        init(src, dst, ref);
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        verify(src, ref);
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    }
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    public static void main(String[] args) {
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        for (int i=0; i< 2000; i++) {
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            test();
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        }
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    }
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}