90 lines
3.5 KiB
Java
90 lines
3.5 KiB
Java
/*
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* Copyright (c) 2012, 2013, 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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* @bug 8000805
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* @summary JMM issue: short loads are non-atomic
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*
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* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation -Xcomp
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* -XX:+PrintCompilation
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* -XX:CompileCommand=compileonly,compiler.c2.Test8000805::load*
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* compiler.c2.Test8000805
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*/
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package compiler.c2;
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public class Test8000805 {
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static long loadS2LmaskFF (short[] sa) { return sa[0] & 0xFF; }
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static long _loadS2LmaskFF (short[] sa) { return sa[0] & 0xFF; }
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static long loadS2Lmask16 (short[] sa) { return sa[0] & 0xFFFE; }
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static long _loadS2Lmask16 (short[] sa) { return sa[0] & 0xFFFE; }
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static long loadS2Lmask13 (short[] sa) { return sa[0] & 0x0FFF; }
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static long _loadS2Lmask13 (short[] sa) { return sa[0] & 0x0FFF; }
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static int loadUS_signExt (char[] ca) { return (ca[0] << 16) >> 16; }
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static int _loadUS_signExt (char[] ca) { return (ca[0] << 16) >> 16; }
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static long loadB2L_mask8 (byte[] ba) { return ba[0] & 0x55; }
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static long _loadB2L_mask8 (byte[] ba) { return ba[0] & 0x55; }
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public static void main(String[] args) {
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for (int i = Byte.MIN_VALUE; i < Byte.MAX_VALUE; i++) {
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byte[] ba = new byte[] { (byte) i};
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{ long v1 = loadB2L_mask8(ba);
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long v2 = _loadB2L_mask8(ba);
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if (v1 != v2)
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throw new InternalError(String.format("loadB2L_mask8 failed: %x != %x", v1, v2)); }
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}
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for (int i = Short.MIN_VALUE; i < Short.MAX_VALUE; i++) {
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short[] sa = new short[] { (short)i };
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char[] ca = new char[] { (char)i };
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{ long v1 = loadS2LmaskFF(sa);
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long v2 = _loadS2LmaskFF(sa);
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if (v1 != v2)
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throw new InternalError(String.format("loadS2LmaskFF failed: %x != %x", v1, v2)); }
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{ long v1 = loadS2Lmask16(sa);
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long v2 = _loadS2Lmask16(sa);
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if (v1 != v2)
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throw new InternalError(String.format("loadS2Lmask16 failed: %x != %x", v1, v2)); }
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{ long v1 = loadS2Lmask13(sa);
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long v2 = _loadS2Lmask13(sa);
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if (v1 != v2)
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throw new InternalError(String.format("loadS2Lmask13 failed: %x != %x", v1, v2)); }
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{ int v1 = loadUS_signExt(ca);
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int v2 = _loadUS_signExt(ca);
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if (v1 != v2)
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throw new InternalError(String.format("loadUS_signExt failed: %x != %x", v1, v2)); }
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}
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System.out.println("TEST PASSED.");
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}
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}
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