1 /* 2 * Copyright (c) 2013, 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 8007294 27 * @bug 8146999 28 * @summary ReduceFieldZeroing doesn't check for dependent load and can lead to incorrect execution 29 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+AlwaysIncrementalInline -XX:-UseOnStackReplacement -XX:-BackgroundCompilation Test8007294 30 * 31 */ 32 33 public class Test8007294 { 34 35 int i1; 36 int i2; 37 38 Test8007294(int i1, int i2) { 39 this.i1 = i1; 40 this.i2 = i2; 41 } 42 43 static int m(int v) { 44 return v; 45 } 46 47 static Test8007294 test1() { 48 Test8007294 obj = new Test8007294(10, 100); 49 int v1 = obj.i1; 50 51 int v3 = m(v1); 52 int v2 = obj.i2; 53 obj.i2 = v3; 54 obj.i1 = v2; 55 56 return obj; 57 } 58 59 static int test2(int i) { 60 int j = 0; 61 if (i > 0) { 62 j = 1; 63 } 64 65 int[] arr = new int[10]; 66 arr[0] = 1; 67 arr[1] = 2; 68 int v1 = arr[j]; 69 arr[0] = 3; 70 arr[1] = 4; 71 72 return v1; 73 } 74 75 static public void main(String[] args) { 76 boolean failed = false; 77 for (int i = 0; i < 20000; i++) { 78 Test8007294 obj = test1(); 79 if (obj.i1 != 100 || obj.i2 != 10) { 80 System.out.println("FAILED test1 obj.i1 = " + obj.i1 +", obj.i2 = " + obj.i2); 81 failed = true; 82 break; 83 } 84 } 85 for (int i = 0; i < 20000; i++) { 86 test2(0); // pollute profile 87 int res = test2(1); 88 if (res != 2) { 89 System.out.println("FAILED test2 = " + res); 90 failed = true; 91 break; 92 } 93 } 94 if (failed) { 95 System.exit(97); 96 } else { 97 System.out.println("PASSED"); 98 } 99 } 100 }