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/*
* Copyright (c) 2022, 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 8277060
* @requires vm.debug == true & vm.compiler2.enabled
* @modules java.base/jdk.internal.misc
*
* @run main/othervm -Xbatch -XX:CompileCommand=dontinline,compiler.debug.TestTracePhaseCCP::test
* -XX:CompileCommand=compileonly,compiler.debug.TestTracePhaseCCP::test -XX:+TracePhaseCCP
* compiler.debug.TestTracePhaseCCP
*/
package compiler.debug;
import jdk.internal.misc.Unsafe;
import java.nio.ByteOrder;
public class TestTracePhaseCCP {
static private Unsafe UNSAFE = Unsafe.getUnsafe();
static final boolean IS_BIG_ENDIAN = ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN;
static int[] srcArr = new int[1];
static int[] dstArr = new int[1];
static int test(boolean flag) {
int[] srcArrIntLocal = new int[1];
long[] srcArrLongLocal = new long[1];
Object srcArrLocal = (flag ? srcArrIntLocal : srcArrLongLocal);
long srcOffset = (flag ? Unsafe.ARRAY_INT_BASE_OFFSET : Unsafe.ARRAY_LONG_BASE_OFFSET);
srcOffset += (!flag && IS_BIG_ENDIAN ? 4 : 0);
UNSAFE.copyMemory(srcArrLocal, srcOffset, dstArr, Unsafe.ARRAY_INT_BASE_OFFSET, 4);
return dstArr[0];
}
static boolean flag = false;
public static void main(String[] args) {
for (int i = 0; i < 20_000; i++) {
flag = (i % 2 == 0);
int r1 = test(flag);
}
}
}
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