Mercurial > hg > graal-jvmci-8
view test/compiler/escapeAnalysis/TestEscapeThroughInvoke.java @ 23466:92a6cfbf2d94
8022865: [TESTBUG] Compressed Oops testing needs to be revised
Summary: Rewrote compressed oops tests
Reviewed-by: kvn, coleenp, mseledtsov
author | dbuck |
---|---|
date | Tue, 08 Dec 2015 14:23:56 +0000 |
parents | 364f6c28effb |
children |
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/* * 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 8073956 * @summary Tests C2 EA with allocated object escaping through a call. * @run main/othervm -XX:CompileCommand=dontinline,TestEscapeThroughInvoke::create TestEscapeThroughInvoke */ public class TestEscapeThroughInvoke { private A a; public static void main(String[] args) { TestEscapeThroughInvoke test = new TestEscapeThroughInvoke(); test.a = new A(42); // Make sure run gets compiled by C2 for (int i = 0; i < 100_000; ++i) { test.run(); } } private void run() { // Allocate something to trigger EA new Object(); // Create a new escaping instance of A and // verify that it is always equal to 'a.saved'. A escapingA = create(42); a.check(escapingA); } // Create and return a new instance of A that escaped through 'A::saveInto'. // The 'dummy' parameters are needed to avoid EA skipping the methods. private A create(Integer dummy) { A result = new A(dummy); result.saveInto(a, dummy); // result escapes into 'a' here return result; } } class A { private A saved; public A(Integer dummy) { } public void saveInto(A other, Integer dummy) { other.saved = this; } public void check(A other) { if (this.saved != other) { throw new RuntimeException("TEST FAILED: Objects not equal."); } } }