| /* |
| * Copyright (c) 2018, 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. |
| * |
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| */ |
| |
| |
| /* |
| * @test TestVerifyStackAfterDeopt |
| * @bug 8148871 |
| * @summary Checks VerifyStack after deoptimization of array allocation slow call |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:TieredStopAtLevel=1 |
| * -XX:+DeoptimizeALot -XX:+VerifyStack |
| * compiler.interpreter.TestVerifyStackAfterDeopt |
| */ |
| |
| package compiler.interpreter; |
| |
| public class TestVerifyStackAfterDeopt { |
| |
| private void method(Object[] a) { |
| |
| } |
| |
| private void test() { |
| // For the array allocation, C1 emits a slow call into the runtime |
| // that deoptimizes the caller frame due to -XX:+DeoptimizeALot. |
| // The VerifyStack code then gets confused because the following |
| // bytecode instruction is an invoke and the interpreter oop map |
| // generator reports the oop map after execution of that invoke. |
| method(new Object[0]); |
| } |
| |
| public static void main(String[] args) { |
| TestVerifyStackAfterDeopt t = new TestVerifyStackAfterDeopt(); |
| // Run long enough for C1 compilation to trigger and TLAB to fill up |
| for (int i = 0; i < 100_000; ++i) { |
| t.test(); |
| } |
| } |
| } |