diff -r b4441f6cfe79 -r c2304140ed64 hotspot/test/compiler/c2/Test7020614.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hotspot/test/compiler/c2/Test7020614.java Tue Jul 12 18:24:48 2016 +0300 @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +/** + * @test + * @bug 7020614 + * @summary "-server" mode optimizer makes code hang + * + * @run main/othervm/timeout=30 -Xbatch compiler.c2.Test7020614 + */ + +package compiler.c2; + +public class Test7020614 { + + private static final int ITERATIONS = 1000; + private static int doNotOptimizeOut = 0; + + public static long bitCountShort() { + long t0 = System.currentTimeMillis(); + int sum = 0; + for (int it = 0; it < ITERATIONS; ++it) { + short value = 0; + do { + sum += Integer.bitCount(value); + } while (++value != 0); + } + doNotOptimizeOut += sum; + return System.currentTimeMillis() - t0; + } + + public static void main(String[] args) { + for (int i = 0; i < 4; ++i) { + System.out.println((i + 1) + ": " + bitCountShort()); + } + System.out.println("doNotOptimizeOut value: " + doNotOptimizeOut); + } +} +