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/*
* Copyright (c) 2012, 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 8000805
* @summary JMM issue: short loads are non-atomic
*
* @run main/othervm -server -XX:-TieredCompilation -Xcomp -XX:+PrintCompilation -XX:CompileOnly=Test8000805.loadS2LmaskFF,Test8000805.loadS2Lmask16,Test8000805.loadS2Lmask13,Test8000805.loadUS_signExt,Test8000805.loadB2L_mask8 Test8000805
*/
public class Test8000805 {
static long loadS2LmaskFF (short[] sa) { return sa[0] & 0xFF; }
static long loadS2LmaskFF_1 (short[] sa) { return sa[0] & 0xFF; }
static long loadS2Lmask16 (short[] sa) { return sa[0] & 0xFFFE; }
static long loadS2Lmask16_1 (short[] sa) { return sa[0] & 0xFFFE; }
static long loadS2Lmask13 (short[] sa) { return sa[0] & 0x0FFF; }
static long loadS2Lmask13_1 (short[] sa) { return sa[0] & 0x0FFF; }
static int loadUS_signExt (char[] ca) { return (ca[0] << 16) >> 16; }
static int loadUS_signExt_1 (char[] ca) { return (ca[0] << 16) >> 16; }
static long loadB2L_mask8 (byte[] ba) { return ba[0] & 0x55; }
static long loadB2L_mask8_1 (byte[] ba) { return ba[0] & 0x55; }
public static void main(String[] args) {
for (int i = Byte.MIN_VALUE; i < Byte.MAX_VALUE; i++) {
byte[] ba = new byte[] { (byte) i};
{ long v1 = loadB2L_mask8(ba);
long v2 = loadB2L_mask8_1(ba);
if (v1 != v2)
throw new InternalError(String.format("loadB2L_mask8 failed: %x != %x", v1, v2)); }
}
for (int i = Short.MIN_VALUE; i < Short.MAX_VALUE; i++) {
short[] sa = new short[] { (short)i };
char[] ca = new char[] { (char)i };
{ long v1 = loadS2LmaskFF(sa);
long v2 = loadS2LmaskFF_1(sa);
if (v1 != v2)
throw new InternalError(String.format("loadS2LmaskFF failed: %x != %x", v1, v2)); }
{ long v1 = loadS2Lmask16(sa);
long v2 = loadS2Lmask16_1(sa);
if (v1 != v2)
throw new InternalError(String.format("loadS2Lmask16 failed: %x != %x", v1, v2)); }
{ long v1 = loadS2Lmask13(sa);
long v2 = loadS2Lmask13_1(sa);
if (v1 != v2)
throw new InternalError(String.format("loadS2Lmask13 failed: %x != %x", v1, v2)); }
{ int v1 = loadUS_signExt(ca);
int v2 = loadUS_signExt_1(ca);
if (v1 != v2)
throw new InternalError(String.format("loadUS_signExt failed: %x != %x", v1, v2)); }
}
System.out.println("TEST PASSED.");
}
}
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