1 /* 2 * Copyright (c) 2015, 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 8134974 27 * @summary Cannot pin eliminated arraycopy loads for deopt state in uncommon trap path if it is a loop predicate unc 28 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement TestEliminatedArrayLoopPredicateCopyDeopt 29 * 30 */ 31 32 public class TestEliminatedArrayLoopPredicateCopyDeopt { 33 34 static boolean test(int[] array_src) { 35 int[] array_dst = new int[10]; 36 System.arraycopy(array_src, 0, array_dst, 0, 10); 37 38 for (int i = 0; i < 100; i++) { 39 array_src[i] = i; 40 } 41 if (array_dst[0] == 0) { 42 return true; 43 } 44 return false; 45 } 46 47 static public void main(String[] args) { 48 int[] array_src = new int[100]; 49 for (int i = 0; i < 20000; i++) { 50 test(array_src); 51 } 52 } 53 }