160 lines
6.8 KiB
Java
160 lines
6.8 KiB
Java
/*
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* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2024, Arm Limited. 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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package compiler.c2;
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import jdk.internal.misc.Unsafe;
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import jdk.test.lib.Asserts;
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/**
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* @test TestUnalignedAccess
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* @summary AArch64: C2 compilation hits offset_ok_for_immed: assert "c2 compiler bug".
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* @bug 8319690
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* @run main/othervm compiler.c2.TestUnalignedAccess
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* @run main/othervm -Xcomp -XX:-TieredCompilation -Xmx1g
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* -XX:CompileCommand=compileonly,compiler.c2.TestUnalignedAccess*::<clinit>
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* compiler.c2.TestUnalignedAccess
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*/
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public class TestUnalignedAccess {
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public static final int LEN = 2040;
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static final Unsafe UNSAFE = Unsafe.getUnsafe();
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static void sink(int x) {}
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public static class TestLong {
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private static final byte[] BYTES = new byte[LEN];
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private static final long rawdata = 0xbeef;
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private static final long lseed = 1;
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static {
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sink(2);
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// Signed immediate byte offset: range -256 to 255
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// Positive immediate byte offset: a multiple of 8 in the range 0 to 32760
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// Other immediate byte offsets can't be encoded in the instruction field.
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// 1030 can't be encoded as "base + offset" mode into the instruction field.
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UNSAFE.putLongUnaligned(BYTES, 1030, rawdata);
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// 127 can be encoded into simm9 field.
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UNSAFE.putLongUnaligned(BYTES, 127, rawdata+lseed);
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// 1096 can be encoded into uimm12 field.
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UNSAFE.putLongUnaligned(BYTES, 1096, rawdata-lseed);
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}
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}
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public static class TestInt {
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private static final byte[] BYTES = new byte[LEN];
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private static final int rawdata = 0xbeef;
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private static final int iseed = 2;
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static {
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sink(2);
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// Signed immediate byte offset: range -256 to 255
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// Positive immediate byte offset, a multiple of 4 in the range 0 to 16380
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// Other immediate byte offsets can't be encoded in the instruction field.
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// 274 can't be encoded as "base + offset" mode into the instruction field.
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UNSAFE.putIntUnaligned(BYTES, 274, rawdata);
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// 255 can be encoded into simm9 field.
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UNSAFE.putIntUnaligned(BYTES, 255, rawdata + iseed);
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// 528 can be encoded into uimm12 field.
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UNSAFE.putIntUnaligned(BYTES, 528, rawdata - iseed);
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}
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}
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public static class TestShort {
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private static final byte[] BYTES = new byte[LEN];
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private static final short rawdata = (short)0xbeef;
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private static final short sseed = 3;
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static {
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sink(2);
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// Signed immediate byte offset: range -256 to 255
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// Positive immediate byte offset: a multiple of 2 in the range 0 to 8190
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// Other immediate byte offsets can't be encoded in the instruction field.
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// 257 can't be encoded as "base + offset" mode into the instruction field.
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UNSAFE.putShortUnaligned(BYTES, 257, rawdata);
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// 253 can be encoded into simm9 field.
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UNSAFE.putShortUnaligned(BYTES, 253, (short) (rawdata + sseed));
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// 272 can be encoded into uimm12 field.
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UNSAFE.putShortUnaligned(BYTES, 272, (short) (rawdata - sseed));
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}
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}
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public static class TestByte {
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private static final byte[] BYTES = new byte[LEN];
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private static final byte rawdata = (byte)0x3f;
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private static final byte bseed = 4;
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static {
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sink(2);
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// Signed immediate byte offset: range -256 to 255
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// Positive immediate byte offset: range 0 to 4095
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// Other immediate byte offsets can't be encoded in the instruction field.
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// 272 can be encoded into simm9 field.
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UNSAFE.putByte(BYTES, 272, rawdata);
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// 53 can be encoded into simm9 field.
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UNSAFE.putByte(BYTES, 53, (byte) (rawdata + bseed));
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// 1027 can be encoded into uimm12 field.
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UNSAFE.putByte(BYTES, 1027, (byte) (rawdata - bseed));
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}
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}
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static void test() {
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TestLong ta = new TestLong();
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Asserts.assertEquals(UNSAFE.getLongUnaligned(ta.BYTES, 1030), ta.rawdata, "putUnaligned long failed!");
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Asserts.assertEquals(UNSAFE.getLongUnaligned(ta.BYTES, 127), ta.rawdata + ta.lseed, "putUnaligned long failed!");
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Asserts.assertEquals(UNSAFE.getLongUnaligned(ta.BYTES, 1096), ta.rawdata - ta.lseed, "putUnaligned long failed!");
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TestInt tb = new TestInt();
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Asserts.assertEquals(UNSAFE.getIntUnaligned(tb.BYTES, 274), tb.rawdata, "putUnaligned int failed!");
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Asserts.assertEquals(UNSAFE.getIntUnaligned(tb.BYTES, 255), tb.rawdata + tb.iseed, "putUnaligned int failed!");
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Asserts.assertEquals(UNSAFE.getIntUnaligned(tb.BYTES, 528), tb.rawdata - tb.iseed, "putUnaligned int failed!");
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TestShort tc = new TestShort();
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Asserts.assertEquals(UNSAFE.getShortUnaligned(tc.BYTES, 257), tc.rawdata, "putUnaligned short failed!");
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Asserts.assertEquals(UNSAFE.getShortUnaligned(tc.BYTES, 253), (short) (tc.rawdata + tc.sseed), "putUnaligned short failed!");
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Asserts.assertEquals(UNSAFE.getShortUnaligned(tc.BYTES, 272), (short) (tc.rawdata - tc.sseed), "putUnaligned short failed!");
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TestByte td = new TestByte();
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Asserts.assertEquals(UNSAFE.getByte(td.BYTES, 272), td.rawdata, "put byte failed!");
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Asserts.assertEquals(UNSAFE.getByte(td.BYTES, 53), (byte) (td.rawdata + td.bseed), "put byte failed!");
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Asserts.assertEquals(UNSAFE.getByte(td.BYTES, 1027), (byte) (td.rawdata - td.bseed), "put byte failed!");
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}
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public static void main(String[] strArr) {
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test();
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}
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}
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