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Java example source code file (Test6814842.java)

This example Java source code file (Test6814842.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

internalerror, test6814842

The Test6814842.java Java example source code

/*
 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * @test
 * @bug 6814842
 * @summary Load shortening optimizations
 *
 * @run main/othervm -Xcomp -XX:CompileOnly=Test6814842.loadS2B,Test6814842.loadS2Bmask255,Test6814842.loadUS2B,Test6814842.loadUS2Bmask255,Test6814842.loadI2B,Test6814842.loadI2Bmask255,Test6814842.loadI2S,Test6814842.loadI2Smask255,Test6814842.loadI2Smask65535,Test6814842.loadI2US,Test6814842.loadI2USmask255,Test6814842.loadI2USmask65535 Test6814842
 */

public class Test6814842 {
    static final short[] sa = new short[] { (short) 0xF1F2 };
    static final char[]  ca = new char[]  { (char) 0xF3F4  };
    static final int[]   ia = new int[]   { 0xF1F2F3F4     };

    public static void main(String[] args)
    {
        byte s2b = loadS2B(sa);
        if (s2b != (byte) 0xF2)
            throw new InternalError("loadS2B failed: " + s2b + " != " + (byte) 0xF2);

        byte s2bmask255 = loadS2Bmask255(sa);
        if (s2bmask255 != (byte) 0xF2)
            throw new InternalError("loadS2Bmask255 failed: " + s2bmask255 + " != " + (byte) 0xF2);

        byte us2b = loadUS2B(ca);
        if (us2b != (byte) 0xF4)
            throw new InternalError("loadUS2B failed: " + us2b + " != " + (byte) 0xF4);

        byte us2bmask255 = loadUS2Bmask255(ca);
        if (us2bmask255 != (byte) 0xF4)
            throw new InternalError("loadUS2Bmask255 failed: " + us2bmask255 + " != " + (byte) 0xF4);

        byte i2b = loadI2B(ia);
        if (i2b != (byte) 0xF4)
            throw new InternalError("loadI2B failed: " + i2b + " != " + (byte) 0xF4);

        byte i2bmask255 = loadI2Bmask255(ia);
        if (i2bmask255 != (byte) 0xF4)
            throw new InternalError("loadI2Bmask255 failed: " + i2bmask255 + " != " + (byte) 0xF4);

        short i2s = loadI2S(ia);
        if (i2s != (short) 0xF3F4)
            throw new InternalError("loadI2S failed: " + i2s + " != " + (short) 0xF3F4);

        short i2smask255 = loadI2Smask255(ia);
        if (i2smask255 != (short) 0xF4)
            throw new InternalError("loadI2Smask255 failed: " + i2smask255 + " != " + (short) 0xF4);

        short i2smask65535 = loadI2Smask65535(ia);
        if (i2smask65535 != (short) 0xF3F4)
            throw new InternalError("loadI2Smask65535 failed: " + i2smask65535 + " != " + (short) 0xF3F4);

        char i2us = loadI2US(ia);
        if (i2us != (char) 0xF3F4)
            throw new InternalError("loadI2US failed: " + (int) i2us + " != " + (char) 0xF3F4);

        char i2usmask255 = loadI2USmask255(ia);
        if (i2usmask255 != (char) 0xF4)
            throw new InternalError("loadI2USmask255 failed: " + (int) i2usmask255 + " != " + (char) 0xF4);

        char i2usmask65535 = loadI2USmask65535(ia);
        if (i2usmask65535 != (char) 0xF3F4)
            throw new InternalError("loadI2USmask65535 failed: " + (int) i2usmask65535 + " != " + (char) 0xF3F4);
    }

    static byte  loadS2B          (short[] sa) { return (byte)  (sa[0]         ); }
    static byte  loadS2Bmask255   (short[] sa) { return (byte)  (sa[0] & 0xFF  ); }

    static byte  loadUS2B         (char[]  ca) { return (byte)  (ca[0]         ); }
    static byte  loadUS2Bmask255  (char[]  ca) { return (byte)  (ca[0] & 0xFF  ); }

    static byte  loadI2B          (int[]   ia) { return (byte)  (ia[0]         ); }
    static byte  loadI2Bmask255   (int[]   ia) { return (byte)  (ia[0] & 0xFF  ); }

    static short loadI2S          (int[]   ia) { return (short) (ia[0]         ); }
    static short loadI2Smask255   (int[]   ia) { return (short) (ia[0] & 0xFF  ); }
    static short loadI2Smask65535 (int[]   ia) { return (short) (ia[0] & 0xFFFF); }

    static char  loadI2US         (int[]   ia) { return (char)  (ia[0]         ); }
    static char  loadI2USmask255  (int[]   ia) { return (char)  (ia[0] & 0xFF  ); }
    static char  loadI2USmask65535(int[]   ia) { return (char)  (ia[0] & 0xFFFF); }
}

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