vlivanov@4202: /*
mikael@6198:  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
vlivanov@4202:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
vlivanov@4202:  *
vlivanov@4202:  * This code is free software; you can redistribute it and/or modify it
vlivanov@4202:  * under the terms of the GNU General Public License version 2 only, as
vlivanov@4202:  * published by the Free Software Foundation.
vlivanov@4202:  *
vlivanov@4202:  * This code is distributed in the hope that it will be useful, but WITHOUT
vlivanov@4202:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
vlivanov@4202:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
vlivanov@4202:  * version 2 for more details (a copy is included in the LICENSE file that
vlivanov@4202:  * accompanied this code).
vlivanov@4202:  *
vlivanov@4202:  * You should have received a copy of the GNU General Public License version
vlivanov@4202:  * 2 along with this work; if not, write to the Free Software Foundation,
vlivanov@4202:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
vlivanov@4202:  *
vlivanov@4202:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
vlivanov@4202:  * or visit www.oracle.com if you need additional information or have any
vlivanov@4202:  * questions.
vlivanov@4202:  */
vlivanov@4202: 
vlivanov@4202: /**
vlivanov@4202:  * @test
vlivanov@4202:  * @bug 8000805
vlivanov@4202:  * @summary JMM issue: short loads are non-atomic
vlivanov@4202:  *
collins@4684:  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation -Xcomp -XX:+PrintCompilation -XX:CompileOnly=Test8000805.loadS2LmaskFF,Test8000805.loadS2Lmask16,Test8000805.loadS2Lmask13,Test8000805.loadUS_signExt,Test8000805.loadB2L_mask8 Test8000805
vlivanov@4202:  */
vlivanov@4202: 
vlivanov@4202: public class Test8000805 {
vlivanov@4202:     static long loadS2LmaskFF   (short[] sa) { return sa[0] & 0xFF; }
vlivanov@4202:     static long loadS2LmaskFF_1 (short[] sa) { return sa[0] & 0xFF; }
vlivanov@4202: 
vlivanov@4202:     static long loadS2Lmask16   (short[] sa) { return sa[0] & 0xFFFE; }
vlivanov@4202:     static long loadS2Lmask16_1 (short[] sa) { return sa[0] & 0xFFFE; }
vlivanov@4202: 
vlivanov@4202:     static long loadS2Lmask13   (short[] sa) { return sa[0] & 0x0FFF; }
vlivanov@4202:     static long loadS2Lmask13_1 (short[] sa) { return sa[0] & 0x0FFF; }
vlivanov@4202: 
vlivanov@4202:     static int loadUS_signExt   (char[] ca) { return (ca[0] << 16) >> 16; }
vlivanov@4202:     static int loadUS_signExt_1 (char[] ca) { return (ca[0] << 16) >> 16; }
vlivanov@4202: 
vlivanov@4202:     static long loadB2L_mask8   (byte[] ba) { return ba[0] & 0x55; }
vlivanov@4202:     static long loadB2L_mask8_1 (byte[] ba) { return ba[0] & 0x55; }
vlivanov@4202: 
vlivanov@4202:     public static void main(String[] args) {
vlivanov@4202:         for (int i = Byte.MIN_VALUE; i < Byte.MAX_VALUE; i++) {
vlivanov@4202:             byte[] ba = new byte[]  { (byte) i};
vlivanov@4202: 
vlivanov@4202:             { long v1 = loadB2L_mask8(ba);
vlivanov@4202:               long v2 = loadB2L_mask8_1(ba);
vlivanov@4202:               if (v1 != v2)
vlivanov@4202:               throw new InternalError(String.format("loadB2L_mask8 failed: %x != %x", v1, v2)); }
vlivanov@4202:         }
vlivanov@4202: 
vlivanov@4202:         for (int i = Short.MIN_VALUE; i < Short.MAX_VALUE; i++) {
vlivanov@4202:             short[] sa = new short[] { (short)i };
vlivanov@4202:             char[] ca = new char[] { (char)i };
vlivanov@4202: 
vlivanov@4202:             { long v1 = loadS2LmaskFF(sa);
vlivanov@4202:               long v2 = loadS2LmaskFF_1(sa);
vlivanov@4202:               if (v1 != v2)
vlivanov@4202:               throw new InternalError(String.format("loadS2LmaskFF failed: %x != %x", v1, v2)); }
vlivanov@4202: 
vlivanov@4202:             { long v1 = loadS2Lmask16(sa);
vlivanov@4202:               long v2 = loadS2Lmask16_1(sa);
vlivanov@4202:               if (v1 != v2)
vlivanov@4202:               throw new InternalError(String.format("loadS2Lmask16 failed: %x != %x", v1, v2)); }
vlivanov@4202: 
vlivanov@4202:             { long v1 = loadS2Lmask13(sa);
vlivanov@4202:               long v2 = loadS2Lmask13_1(sa);
vlivanov@4202:               if (v1 != v2)
vlivanov@4202:               throw new InternalError(String.format("loadS2Lmask13 failed: %x != %x", v1, v2)); }
vlivanov@4202: 
vlivanov@4202:             { int v1 = loadUS_signExt(ca);
vlivanov@4202:               int v2 = loadUS_signExt_1(ca);
vlivanov@4202:               if (v1 != v2)
vlivanov@4202:                 throw new InternalError(String.format("loadUS_signExt failed: %x != %x", v1, v2)); }
vlivanov@4202:         }
vlivanov@4202: 
vlivanov@4202:         System.out.println("TEST PASSED.");
vlivanov@4202:     }
vlivanov@4202: }