hotspot/test/compiler/c1/Test7042153.java
author thartmann
Fri, 14 Jul 2017 11:55:58 +0200
changeset 46663 715d5f268f62
parent 41705 332239c052cc
permissions -rw-r--r--
8184271: Time related C1 intrinsics produce inconsistent results when floating around Summary: C1 intrinsics for System.nanoTime(), System.currentTimeMillis() and JVM.counterTime() should be pinned. Reviewed-by: kvn, vlivanov
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/*
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 * Copyright (c) 2011, 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 7042153
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 * @summary Bad folding of IfOps with unloaded constant arguments in C1
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 *
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 * @run main/othervm -Xcomp compiler.c1.Test7042153
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 */
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package compiler.c1;
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public class Test7042153 {
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    static public class Bar { }
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    static public class Foo { }
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    static volatile boolean z;
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    public static void main(String [] args) {
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        Class cx = Bar.class;
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        Class cy = Foo.class;
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        z = (cx == cy);
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    }
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}