jdk

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/*
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 * Copyright (c) 2021, 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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package compiler.exceptions;
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/**
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 * @test
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 * @key stress randomness
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 * @bug 8263227
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 * @summary Tests that users of return values from exception-throwing method
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 *          calls are not duplicated in the call's exception path. The second
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 *          run with a variable seed is added for test robustness.
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 * @library /test/lib /
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 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions
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 *                   -XX:+UnlockDiagnosticVMOptions
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 *                   -Xbatch -XX:+StressGCM -XX:StressSeed=0
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 *                   -XX:+VerifyRegisterAllocator
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 *                   -XX:CompileCommand=dontinline,java.lang.Integer::*
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 *                   compiler.exceptions.TestSpilling
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 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions
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 *                   -XX:+UnlockDiagnosticVMOptions
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 *                   -Xbatch -XX:+StressGCM
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 *                   -XX:+VerifyRegisterAllocator
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 *                   -XX:CompileCommand=dontinline,java.lang.Integer::*
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 *                   compiler.exceptions.TestSpilling
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 */
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public class TestSpilling {
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    public static void test() {
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        int a = Integer.valueOf(42).intValue();
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        // After global code motion, the logic below should only be placed in
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        // the fall-through path of java.lang.Integer::intValue(). Otherwise,
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        // live range splitting might create uses without reaching definitions
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        // if 'a' is spilled.
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        int b = (((a & 0x0000F000)) + 1);
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        int c = a / b + ((a % b > 0) ? 1 : 0);
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    }
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    public static void main(String[] args) {
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        for (int i = 0; i < 10_000; i++) {
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            test();
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        }
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    }
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}
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