60 lines
1.9 KiB
Java
60 lines
1.9 KiB
Java
/*
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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 7020614
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* @summary "-server" mode optimizer makes code hang
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*
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* @run main/othervm/timeout=30 -Xbatch compiler.c2.Test7020614
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*/
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package compiler.c2;
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public class Test7020614 {
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private static final int ITERATIONS = 1000;
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private static int doNotOptimizeOut = 0;
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public static long bitCountShort() {
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long t0 = System.currentTimeMillis();
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int sum = 0;
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for (int it = 0; it < ITERATIONS; ++it) {
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short value = 0;
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do {
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sum += Integer.bitCount(value);
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} while (++value != 0);
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}
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doNotOptimizeOut += sum;
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return System.currentTimeMillis() - t0;
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}
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public static void main(String[] args) {
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for (int i = 0; i < 4; ++i) {
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System.out.println((i + 1) + ": " + bitCountShort());
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}
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System.out.println("doNotOptimizeOut value: " + doNotOptimizeOut);
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}
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}
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