/* * Copyright (c) 1997, 2020, 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 * @key randomness * @bug 6661247 * @summary Internal bug in 32-bit HotSpot optimizer while bit manipulations * * @library /test/lib * @run main compiler.c2.Test6661247
*/
// This isn't a completely reliable test for 6661247 since the results // depend on what the local schedule looks like but it does reproduce // the issue in current builds.
for (int c = 0; c < 2000; c++) { for (int i = 0; i < entries; i++) { long l = r.nextLong(); for (int bit = 0; bit < 64; bit++) {
src[i * 64 + bit] = (l & (1L << bit)) != 0;
}
dest[i] = 0;
result[i] = l;
}
test(src, 0, LongBuffer.wrap(dest, 0, dest.length), 0, src.length); for (int i = 0; i < entries; i++) { if (dest[i] != result[i]) { thrownew InternalError(i + ": " + Long.toHexString(dest[i]) + " != " + Long.toHexString(result[i]));
}
}
}
}
}
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