| /* |
| * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @bug 8069191 |
| * @summary predicate moved out of loops and CastPP removal causes dependency to be lost |
| * |
| * @run main/othervm -Xcomp -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:+StressGCM |
| * -XX:CompileCommand=compileonly,compiler.loopopts.TestPredicateLostDependency::m1 |
| * compiler.loopopts.TestPredicateLostDependency |
| * |
| */ |
| |
| package compiler.loopopts; |
| |
| public class TestPredicateLostDependency { |
| static class A { |
| int i; |
| } |
| |
| static class B extends A { |
| } |
| |
| static boolean crash = false; |
| |
| static boolean m2() { |
| return crash; |
| } |
| |
| static int m3(float[] arr) { |
| return 0; |
| } |
| |
| static float m1(A aa) { |
| float res = 0; |
| float[] arr = new float[10]; |
| for (int i = 0; i < 10; i++) { |
| if (m2()) { |
| arr = null; |
| } |
| m3(arr); |
| int j = arr.length; |
| int k = 0; |
| for (k = 9; k < j; k++) { |
| } |
| if (k == 10) { |
| if (aa instanceof B) { |
| } |
| } |
| res += arr[0]; |
| res += arr[1]; |
| } |
| return res; |
| } |
| |
| static public void main(String args[]) { |
| A a = new A(); |
| B b = new B(); |
| for (int i = 0; i < 20000; i++) { |
| m1(a); |
| } |
| crash = true; |
| try { |
| m1(a); |
| } catch (NullPointerException npe) {} |
| } |
| } |