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comparison test/compiler/6863155/Test6863155.java @ 897:52898b0c43e9

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6863155: Server compiler generates incorrect code (x86, long, bitshift, bitmask) Summary: Code compiled with server compiler generates an incorrect result. Reviewed-by: cfang, never, kvn
author twisti
date Tue, 28 Jul 2009 09:02:30 +0200
parents
children c18cbe5936b8
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896:1cef5ec3ca56 897:52898b0c43e9
1 /*
2 * Copyright 2009 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
23
24 /**
25 * @test
26 * @bug 6863155
27 * @summary Server compiler generates incorrect code (x86, long, bitshift, bitmask)
28 *
29 * @run main/othervm -Xcomp -XX:CompileOnly=Test6863155.test Test6863155
30 */
31
32 public class Test6863155 {
33 private static long test(byte b) {
34 return b << 24 & 0xff000000L;
35 }
36
37 public static void main(String... args) {
38 long result = test((byte) 0xc2);
39 long expected = 0x00000000c2000000L;
40 if (result != expected)
41 throw new InternalError(Long.toHexString(result) + " != " + Long.toHexString(expected));
42 }
43 }