Mercurial > jdk8-mips64-public > hotspot / changeset

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/test/compiler/c2/TestReplacedNodesOSR.java	Thu Feb 16 15:14:44 2017 -0800
     1.3 @@ -0,0 +1,86 @@
     1.4 +/*
     1.5 + * Copyright (c) 2017, Red Hat, Inc. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + */
    1.26 +
    1.27 +/**
    1.28 + * @test
    1.29 + * @bug 8174164
    1.30 + * @summary SafePointNode::_replaced_nodes breaks with irreducible loops
    1.31 + * @run main/othervm -XX:-BackgroundCompilation TestReplacedNodesOSR
    1.32 + *
    1.33 + */
    1.34 +
    1.35 +public class TestReplacedNodesOSR {
    1.36 +
    1.37 +    static Object dummy;
    1.38 +
    1.39 +    static interface I {
    1.40 +    }
    1.41 +
    1.42 +    static class A implements I {
    1.43 +    }
    1.44 +
    1.45 +    static final class MyException extends Exception {
    1.46 +    }
    1.47 +
    1.48 +    static final A obj = new A();
    1.49 +    static I static_field() { return obj; }
    1.50 +
    1.51 +    // When OSR compiled, this method has an irreducible loop
    1.52 +    static void test(int v, MyException e) {
    1.53 +        int i = 0;
    1.54 +        for (;;) {
    1.55 +            if (i == 1000) {
    1.56 +                break;
    1.57 +            }
    1.58 +            try {
    1.59 +                if ((i%2) == 0) {
    1.60 +                    int j = 0;
    1.61 +                    for (;;) {
    1.62 +                        j++;
    1.63 +                        if (i+j != v) {
    1.64 +                            if (j == 1000) {
    1.65 +                                break;
    1.66 +                            }
    1.67 +                        } else {
    1.68 +                            A a = (A)static_field();
    1.69 +                            // replaced node recorded here
    1.70 +                            throw e;
    1.71 +                        }
    1.72 +                    }
    1.73 +                }
    1.74 +            } catch(MyException ex) {
    1.75 +            }
    1.76 +            i++;
    1.77 +            // replaced node applied on return of the method
    1.78 +            // replaced node used here
    1.79 +            dummy = static_field();
    1.80 +        }
    1.81 +    }
    1.82 +
    1.83 +
    1.84 +    static public void main(String[] args) {
    1.85 +        for (int i = 0; i < 1000; i++) {
    1.86 +            test(1100, new MyException());
    1.87 +        }
    1.88 +    }
    1.89 +}