| /* |
| * Copyright (c) 2014, 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. |
| */ |
| |
| import java.io.File; |
| import java.nio.file.Files; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| |
| import jdk.test.lib.*; |
| |
| /* |
| * @test |
| * @bug 8050079 |
| * @summary Compiles a monomorphic call to finalizeObject() on a modified java.lang.Object to test C1 CHA. |
| * @library /testlibrary |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * java.base/jdk.internal |
| * @ignore 8132924 |
| * @compile -XDignore.symbol.file java/lang/Object.java TestMonomorphicObjectCall.java |
| * @run main TestMonomorphicObjectCall |
| */ |
| public class TestMonomorphicObjectCall { |
| |
| private static void callFinalize(Object object) throws Throwable { |
| // Call modified version of java.lang.Object::finalize() that is |
| // not overridden by any subclass. C1 CHA should mark the call site |
| // as monomorphic and inline the method. |
| object.finalizeObject(); |
| } |
| |
| public static void main(String[] args) throws Throwable { |
| if (args.length == 0) { |
| byte[] bytecode = Files.readAllBytes(Paths.get(System.getProperty("test.classes") + File.separator + |
| "java" + File.separator + "lang" + File.separator + "Object.class")); |
| ClassFileInstaller.writeClassToDisk("java.lang.Object", bytecode, "mods/java.base"); |
| // Execute new instance with modified java.lang.Object |
| executeTestJvm(); |
| } else { |
| // Trigger compilation of 'callFinalize' |
| callFinalize(new Object()); |
| } |
| } |
| |
| public static void executeTestJvm() throws Throwable { |
| // Execute test with modified version of java.lang.Object |
| // in -Xbootclasspath. |
| String[] vmOpts = new String[] { |
| "-Xpatch:mods", |
| "-Xcomp", |
| "-XX:+IgnoreUnrecognizedVMOptions", |
| "-XX:-VerifyDependencies", |
| "-XX:CompileOnly=TestMonomorphicObjectCall::callFinalize", |
| "-XX:CompileOnly=Object::finalizeObject", |
| "-XX:TieredStopAtLevel=1", |
| TestMonomorphicObjectCall.class.getName(), |
| "true"}; |
| OutputAnalyzer output = ProcessTools.executeTestJvm(vmOpts); |
| output.shouldHaveExitValue(0); |
| } |
| } |