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comparison test/compiler/EliminateAutoBox/UnsignedLoads.java @ 20669:e194d26c9f4e

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8058847: C2: EliminateAutoBox regression after 8042786 Reviewed-by: kvn, roland
author vlivanov
date Fri, 24 Oct 2014 09:13:12 -0700
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children abb8b1de96ff
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20668:c80ddae00f51 20669:e194d26c9f4e
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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 /*
27 * @test
28 * @library /testlibrary
29 * @run main/othervm -Xbatch -XX:+EliminateAutoBox
30 * -XX:CompileOnly=::valueOf,::byteValue,::shortValue,::testUnsignedByte,::testUnsignedShort
31 * UnsignedLoads
32 */
33 import static com.oracle.java.testlibrary.Asserts.assertEQ;
34
35 public class UnsignedLoads {
36 public static int testUnsignedByte() {
37 byte[] bytes = new byte[] {-1};
38 int res = 0;
39 for (int i = 0; i < 100000; i++) {
40 for (Byte b : bytes) {
41 res = b & 0xff;
42 }
43 }
44 return res;
45 }
46
47 public static int testUnsignedShort() {
48 int res = 0;
49 short[] shorts = new short[] {-1};
50 for (int i = 0; i < 100000; i++) {
51 for (Short s : shorts) {
52 res = s & 0xffff;
53 }
54 }
55 return res;
56 }
57
58 public static void main(String[] args) {
59 assertEQ(testUnsignedByte(), 255);
60 assertEQ(testUnsignedShort(), 65535);
61 System.out.println("TEST PASSED");
62 }
63 }