test/compiler/codegen/C1NullCheckOfNullStore.java

Mon, 28 Jul 2014 15:06:38 -0700

author
fzhinkin
date
Mon, 28 Jul 2014 15:06:38 -0700
changeset 6997
dbb05f6d93c4
parent 0
f90c822e73f8
permissions
-rw-r--r--

8051344: JVM crashed in Compile::start() during method parsing w/ UseRTMDeopt turned on
Summary: call rtm_deopt() only if there were no compilation bailouts before.
Reviewed-by: kvn

     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  */
    24 /*
    25  * @test
    26  * @bug 8039043
    27  * @summary Null check is placed in a wrong place when storing a null to an object field on x64 with compressed oops off
    28  * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:CompileCommand=compileonly,C1NullCheckOfNullStore::test -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:-UseCompressedOops C1NullCheckOfNullStore
    29  *
    30  */
    32 public class C1NullCheckOfNullStore {
    33   private static class Foo {
    34     Object bar;
    35   }
    36   static private void test(Foo x) {
    37     x.bar = null;
    38   }
    39   static public void main(String args[]) {
    40     Foo x = new Foo();
    41     for (int i = 0; i < 10000; i++) {
    42       test(x);
    43     }
    44     boolean gotNPE = false;
    45     try {
    46       for (int i = 0; i < 10000; i++) {
    47         test(null);
    48       }
    49     }
    50     catch(NullPointerException e) {
    51       gotNPE = true;
    52     }
    53     if (!gotNPE) {
    54       throw new Error("Expecting a NullPointerException");
    55     }
    56   }
    57 }

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