1 /* 2 * Copyright (c) 2014, 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 8048170 27 * @summary Following range check smearing, range check cannot be replaced by dominating identical test. 28 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement TestRangeCheckSmearingLoopOpts 29 * 30 */ 31 public class TestRangeCheckSmearingLoopOpts { 32 33 static int dummy; 34 35 static int m1(int[] array, int i) { 36 for (;;) { 37 for (;;) { 38 if (array[i] < 0) { 39 break; 40 } 41 i++; 42 } 43 44 if ((i % 2)== 0) { 45 if ((array[i] % 2) == 0) { 46 dummy = i; 47 } 48 } 49 50 if (array[i-1] == 9) { 51 int res = array[i-3]; 52 res += array[i]; 53 res += array[i-2]; 54 return res; 55 } 56 i++; 57 } 58 } 59 60 static public void main(String[] args) { 61 int[] array = { 0, 1, 2, -3, 4, 5, -2, 7, 8, 9, -1 }; 62 for (int i = 0; i < 20000; i++) { 63 m1(array, 0); 64 } 65 array[0] = -1; 66 try { 67 m1(array, 0); 68 } catch(ArrayIndexOutOfBoundsException aioobe) {} 69 } 70 }