hotspot/test/compiler/print/TestProfileReturnTypePrinting.java
author tpivovarova
Tue, 10 Nov 2015 21:09:49 +0300
changeset 34172 19299c8b7c81
parent 29351 caf03a304610
child 40059 c2304140ed64
permissions -rw-r--r--
8139388: [TESTBUG] JVMCI test failed with RuntimeException profiling info wasn't changed after 100 invocations (assert failed: BaseProfilingInfo<> != BaseProfilingInfo<>) Reviewed-by: twisti
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/*
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 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/**
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 * @test
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 * @bug 8073154
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 * @build TestProfileReturnTypePrinting
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 * @run main/othervm -XX:TypeProfileLevel=020
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 *                   -XX:CompileOnly=TestProfileReturnTypePrinting.testMethod
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 *                   -XX:+IgnoreUnrecognizedVMOptions -XX:+PrintLIR
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 *                   TestProfileReturnTypePrinting
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 * @summary Verify that c1's LIR that contains ProfileType node could be dumped
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 *          without a crash disregard to an exact class knowledge.
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 */
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public class TestProfileReturnTypePrinting {
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    private static final int ITERATIONS = 1_000_000;
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    public static void main(String args[]) {
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        for (int i = 0; i < ITERATIONS; i++) {
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            TestProfileReturnTypePrinting.testMethod(i);
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        }
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    }
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    private static int testMethod(int i) {
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        return TestProfileReturnTypePrinting.foo().hashCode()
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                + TestProfileReturnTypePrinting.bar(i).hashCode();
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    }
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    /* Exact class of returned value is known statically. */
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    private static B foo() {
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        return new B();
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    }
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    /* Exact class of returned value is not known statically. */
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    private static Object bar(int i) {
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        if (i % 2 == 0) {
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            return new A();
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        } else {
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            return new B();
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        }
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    }
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    private static class A {
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    }
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    private static class B extends A {
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    }
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}