1 /* 2 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test 26 * @bug 6636138 27 * @summary SuperWord::co_locate_pack(Node_List* p) generates memory graph that leads to memory order violation. 28 * 29 * @run main/othervm -Xbatch -XX:CompileOnly=Test1.init Test1 30 */ 31 32 public class Test1 { 33 34 public static void init(int src[], int [] dst, int[] ref) { 35 // initialize the arrays 36 for (int i =0; i<src.length; i++) { 37 src[i] = i; 38 dst[i] = 2; // yes, dst[i] needed(otherwise src[i] will be replaced with i) 39 ref[i] = src[i]; // src[i] depends on the store src[i] 40 } 41 } 42 43 public static void verify(int src[], int[] ref) { 44 // check whether src and ref are equal 45 for (int i = 0; i < src.length; i++) { 46 if (src[i] != ref[i]) { 47 System.out.println("Error: src and ref don't match at " + i); 48 System.exit(97); 49 } 50 } 51 } 52 53 public static void test() { 54 int[] src = new int[34]; 55 int[] dst = new int[34]; 56 int[] ref = new int[34]; 57 58 init(src, dst, ref); 59 verify(src, ref); 60 } 61 62 public static void main(String[] args) { 63 for (int i=0; i< 2000; i++) { 64 test(); 65 } 66 } 67 }