67 lines
2.2 KiB
Java
67 lines
2.2 KiB
Java
/*
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* Copyright (c) 2014, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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*
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* @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+EliminateAutoBox
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* -XX:CompileOnly=*::valueOf,*::byteValue,*::shortValue,*::testUnsignedByte,*::testUnsignedShort
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* compiler.eliminateAutobox.UnsignedLoads
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*/
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package compiler.eliminateAutobox;
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import static jdk.test.lib.Asserts.assertEQ;
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public class UnsignedLoads {
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public static int testUnsignedByte() {
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byte[] bytes = new byte[] {-1};
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int res = 0;
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for (int i = 0; i < 100000; i++) {
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for (Byte b : bytes) {
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res = b & 0xff;
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}
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}
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return res;
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}
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public static int testUnsignedShort() {
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int res = 0;
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short[] shorts = new short[] {-1};
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for (int i = 0; i < 100000; i++) {
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for (Short s : shorts) {
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res = s & 0xffff;
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}
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}
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return res;
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}
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public static void main(String[] args) {
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assertEQ(testUnsignedByte(), 255);
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assertEQ(testUnsignedShort(), 65535);
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System.out.println("TEST PASSED");
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}
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}
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