1 /*
   2  * Copyright (c) 2009, 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 6814842
  27  * @summary Load shortening optimizations
  28  *
  29  * @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
  30  */
  31 
  32 public class Test6814842 {
  33     static final short[] sa = new short[] { (short) 0xF1F2 };
  34     static final char[]  ca = new char[]  { (char) 0xF3F4  };
  35     static final int[]   ia = new int[]   { 0xF1F2F3F4     };
  36 
  37     public static void main(String[] args)
  38     {
  39         byte s2b = loadS2B(sa);
  40         if (s2b != (byte) 0xF2)
  41             throw new InternalError("loadS2B failed: " + s2b + " != " + (byte) 0xF2);
  42 
  43         byte s2bmask255 = loadS2Bmask255(sa);
  44         if (s2bmask255 != (byte) 0xF2)
  45             throw new InternalError("loadS2Bmask255 failed: " + s2bmask255 + " != " + (byte) 0xF2);
  46 
  47         byte us2b = loadUS2B(ca);
  48         if (us2b != (byte) 0xF4)
  49             throw new InternalError("loadUS2B failed: " + us2b + " != " + (byte) 0xF4);
  50 
  51         byte us2bmask255 = loadUS2Bmask255(ca);
  52         if (us2bmask255 != (byte) 0xF4)
  53             throw new InternalError("loadUS2Bmask255 failed: " + us2bmask255 + " != " + (byte) 0xF4);
  54 
  55         byte i2b = loadI2B(ia);
  56         if (i2b != (byte) 0xF4)
  57             throw new InternalError("loadI2B failed: " + i2b + " != " + (byte) 0xF4);
  58 
  59         byte i2bmask255 = loadI2Bmask255(ia);
  60         if (i2bmask255 != (byte) 0xF4)
  61             throw new InternalError("loadI2Bmask255 failed: " + i2bmask255 + " != " + (byte) 0xF4);
  62 
  63         short i2s = loadI2S(ia);
  64         if (i2s != (short) 0xF3F4)
  65             throw new InternalError("loadI2S failed: " + i2s + " != " + (short) 0xF3F4);
  66 
  67         short i2smask255 = loadI2Smask255(ia);
  68         if (i2smask255 != (short) 0xF4)
  69             throw new InternalError("loadI2Smask255 failed: " + i2smask255 + " != " + (short) 0xF4);
  70 
  71         short i2smask65535 = loadI2Smask65535(ia);
  72         if (i2smask65535 != (short) 0xF3F4)
  73             throw new InternalError("loadI2Smask65535 failed: " + i2smask65535 + " != " + (short) 0xF3F4);
  74 
  75         char i2us = loadI2US(ia);
  76         if (i2us != (char) 0xF3F4)
  77             throw new InternalError("loadI2US failed: " + (int) i2us + " != " + (char) 0xF3F4);
  78 
  79         char i2usmask255 = loadI2USmask255(ia);
  80         if (i2usmask255 != (char) 0xF4)
  81             throw new InternalError("loadI2USmask255 failed: " + (int) i2usmask255 + " != " + (char) 0xF4);
  82 
  83         char i2usmask65535 = loadI2USmask65535(ia);
  84         if (i2usmask65535 != (char) 0xF3F4)
  85             throw new InternalError("loadI2USmask65535 failed: " + (int) i2usmask65535 + " != " + (char) 0xF3F4);
  86     }
  87 
  88     static byte  loadS2B          (short[] sa) { return (byte)  (sa[0]         ); }
  89     static byte  loadS2Bmask255   (short[] sa) { return (byte)  (sa[0] & 0xFF  ); }
  90 
  91     static byte  loadUS2B         (char[]  ca) { return (byte)  (ca[0]         ); }
  92     static byte  loadUS2Bmask255  (char[]  ca) { return (byte)  (ca[0] & 0xFF  ); }
  93 
  94     static byte  loadI2B          (int[]   ia) { return (byte)  (ia[0]         ); }
  95     static byte  loadI2Bmask255   (int[]   ia) { return (byte)  (ia[0] & 0xFF  ); }
  96 
  97     static short loadI2S          (int[]   ia) { return (short) (ia[0]         ); }
  98     static short loadI2Smask255   (int[]   ia) { return (short) (ia[0] & 0xFF  ); }
  99     static short loadI2Smask65535 (int[]   ia) { return (short) (ia[0] & 0xFFFF); }
 100 
 101     static char  loadI2US         (int[]   ia) { return (char)  (ia[0]         ); }
 102     static char  loadI2USmask255  (int[]   ia) { return (char)  (ia[0] & 0xFF  ); }
 103     static char  loadI2USmask65535(int[]   ia) { return (char)  (ia[0] & 0xFFFF); }
 104 }