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annotate 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
parents
children abb8b1de96ff
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20669
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1 /*
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25
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26 /*
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27 * @test
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28 * @library /testlibrary
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29 * @run main/othervm -Xbatch -XX:+EliminateAutoBox
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30 * -XX:CompileOnly=::valueOf,::byteValue,::shortValue,::testUnsignedByte,::testUnsignedShort
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31 * UnsignedLoads
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32 */
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33 import static com.oracle.java.testlibrary.Asserts.assertEQ;
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34
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35 public class UnsignedLoads {
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36 public static int testUnsignedByte() {
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37 byte[] bytes = new byte[] {-1};
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38 int res = 0;
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39 for (int i = 0; i < 100000; i++) {
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40 for (Byte b : bytes) {
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41 res = b & 0xff;
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42 }
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43 }
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44 return res;
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45 }
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46
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47 public static int testUnsignedShort() {
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48 int res = 0;
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49 short[] shorts = new short[] {-1};
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50 for (int i = 0; i < 100000; i++) {
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51 for (Short s : shorts) {
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52 res = s & 0xffff;
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53 }
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54 }
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55 return res;
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56 }
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57
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58 public static void main(String[] args) {
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59 assertEQ(testUnsignedByte(), 255);
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60 assertEQ(testUnsignedShort(), 65535);
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61 System.out.println("TEST PASSED");
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62 }
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63 }