test/hotspot/jtreg/compiler/intrinsics/mathexact/LongMulOverflowTest.java
author rbackman
Thu, 18 Jan 2018 19:21:11 +0100
changeset 48809 a81c930a8838
permissions -rw-r--r--
8191915: JCK tests produce incorrect results with C2 Reviewed-by: thartmann, vlivanov, goetz
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/*
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 * Copyright (c) 2018, 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 8191915
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 * @summary Regression test for multiplyExact intrinsic
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 * @library /test/lib /
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 * @modules java.base/jdk.internal.misc
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 *          java.management
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 *
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 * @run main/othervm -Xcomp -XX:-TieredCompilation compiler.intrinsics.mathexact.LongMulOverflowTest
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 */
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package compiler.intrinsics.mathexact;
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public class LongMulOverflowTest {
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    public static void main(String[] args) {
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        LongMulOverflowTest test = new LongMulOverflowTest();
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        for (int i = 0; i < 10; ++i) {
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            try {
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                test.runTest();
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                throw new RuntimeException("Error, runTest() did not overflow!");
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            } catch (ArithmeticException e) {
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                // success
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            }
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            try {
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                test.runTestOverflow();
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                throw new RuntimeException("Error, runTestOverflow() did not overflow!");
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            } catch (ArithmeticException e) {
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                // success
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            }
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        }
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    }
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    public void runTest() {
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        java.lang.Math.multiplyExact(Long.MIN_VALUE, 7);
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    }
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    public void runTestOverflow() {
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      java.lang.Math.multiplyExact((Long.MAX_VALUE / 2) + 1, 2);
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    }
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}