Mercurial > hg > truffle
comparison test/compiler/codegen/LoadWithMask2.java @ 17506:984401824c5e
8031743: C2: loadI2L_immI broken for negative memory values
Summary: Restrict loadI2L_imm optimizations to positive values of mask
Reviewed-by: kvn, dlong
author | iveresov |
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date | Tue, 21 Jan 2014 20:05:28 -0800 |
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17505:f970454708b8 | 17506:984401824c5e |
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1 /* | |
2 * Copyright (c) 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 */ | |
23 | |
24 /* | |
25 * @test | |
26 * @bug 8031743 | |
27 * @summary loadI2L_immI broken for negative memory values | |
28 * @run main/othervm -server -Xbatch -XX:-TieredCompilation -XX:CompileCommand=compileonly,*.foo* LoadWithMask2 | |
29 * | |
30 */ | |
31 public class LoadWithMask2 { | |
32 static int x; | |
33 static long foo1() { | |
34 return x & 0xfffffffe; | |
35 } | |
36 static long foo2() { | |
37 return x & 0xff000000; | |
38 } | |
39 static long foo3() { | |
40 return x & 0x8abcdef1; | |
41 } | |
42 | |
43 public static void main(String[] args) { | |
44 x = -1; | |
45 long l = 0; | |
46 for (int i = 0; i < 100000; ++i) { | |
47 l = foo1() & foo2() & foo3(); | |
48 } | |
49 if (l > 0) { | |
50 System.out.println("FAILED"); | |
51 System.exit(97); | |
52 } | |
53 System.out.println("PASSED"); | |
54 } | |
55 } |