1 /*
   2  * Copyright (c) 2014, 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 import java.io.File;
  25 import java.util.ArrayList;
  26 import java.util.Collections;
  27 
  28 import com.oracle.java.testlibrary.*;
  29 
  30 /*
  31  * @test
  32  * @bug 8050079
  33  * @summary Compiles a monomorphic call to finalizeObject() on a modified java.lang.Object to test C1 CHA.
  34  * @library /testlibrary
  35  * @compile -XDignore.symbol.file java/lang/Object.java TestMonomorphicObjectCall.java
  36  * @run main TestMonomorphicObjectCall
  37  */
  38 public class TestMonomorphicObjectCall {
  39     final static String testClasses = System.getProperty("test.classes") + File.separator;
  40 
  41     private static void callFinalize(Object object) throws Throwable {
  42         // Call modified version of java.lang.Object::finalize() that is
  43         // not overridden by any subclass. C1 CHA should mark the call site
  44         // as monomorphic and inline the method.
  45         object.finalizeObject();
  46     }
  47 
  48     public static void main(String[] args) throws Throwable {
  49         if (args.length == 0) {
  50             // Execute new instance with modified java.lang.Object
  51             executeTestJvm();
  52         } else {
  53             // Trigger compilation of 'callFinalize'
  54             callFinalize(new Object());
  55         }
  56     }
  57 
  58     public static void executeTestJvm() throws Throwable {
  59         // Execute test with modified version of java.lang.Object
  60         // in -Xbootclasspath.
  61         String[] vmOpts = new String[] {
  62                 "-Xbootclasspath/p:" + testClasses,
  63                 "-Xcomp",
  64                 "-XX:+IgnoreUnrecognizedVMOptions",
  65                 "-XX:-VerifyDependencies",
  66                 "-XX:CompileOnly=TestMonomorphicObjectCall::callFinalize",
  67                 "-XX:CompileOnly=Object::finalizeObject",
  68                 "-XX:TieredStopAtLevel=1",
  69                 TestMonomorphicObjectCall.class.getName(),
  70                 "true"};
  71         OutputAnalyzer output = ProcessTools.executeTestJvm(vmOpts);
  72         output.shouldHaveExitValue(0);
  73     }
  74 }