test/hotspot/jtreg/compiler/arraycopy/TestEliminatedArrayLoopPredicateCopyDeopt.java
author neliasso
Fri, 29 Nov 2019 11:26:25 +0100
changeset 59324 5e8f9713e343
parent 47216 71c04702a3d5
permissions -rw-r--r--
8234520: ZGC: C2: Oop instance cloning causing skipped compiles Reviewed-by: pliden, vlivanov
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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 8134974
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 * @summary Cannot pin eliminated arraycopy loads for deopt state in uncommon trap path if it is a loop predicate unc
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 *
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 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement
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 *                   compiler.arraycopy.TestEliminatedArrayLoopPredicateCopyDeopt
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 */
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package compiler.arraycopy;
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public class TestEliminatedArrayLoopPredicateCopyDeopt {
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    static boolean test(int[] array_src) {
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        int[] array_dst = new int[10];
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        System.arraycopy(array_src, 0, array_dst, 0, 10);
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        for (int i = 0; i < 100; i++) {
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            array_src[i] = i;
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        }
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        if (array_dst[0] == 0) {
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            return true;
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        }
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        return false;
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    }
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    static public void main(String[] args) {
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        int[] array_src = new int[100];
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        for (int i = 0; i < 20000; i++) {
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            test(array_src);
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        }
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    }
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}