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/*
* Copyright (c) 2023, 2024, 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 8301093
* @summary Verify failure to intrinsify does not pollute control flow
* @modules java.base/jdk.internal.util:+open
*
* @run main/othervm -Xbatch -XX:-TieredCompilation compiler.intrinsics.TestArraysHashCode
*/
package compiler.intrinsics;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class TestArraysHashCode {
private static final Method vectorizedHashCode;
private static final int T_BOOLEAN;
static {
try {
var arraysSupport = Class.forName("jdk.internal.util.ArraysSupport");
vectorizedHashCode = arraysSupport.getDeclaredMethod("vectorizedHashCode",
Object.class, int.class, int.class, int.class, int.class);
vectorizedHashCode.setAccessible(true);
Field f = arraysSupport.getDeclaredField("T_BOOLEAN");
f.setAccessible(true);
T_BOOLEAN = f.getInt(null);
} catch (Throwable e) {
throw new RuntimeException(e);
}
}
static int type;
static byte[] bytes;
public static void main(String[] args)
throws InvocationTargetException, IllegalAccessException {
// read
bytes = new byte[256];
type = T_BOOLEAN;
testIntrinsicWithConstantType();
testIntrinsicWithNonConstantType();
}
private static void testIntrinsicWithConstantType()
throws InvocationTargetException, IllegalAccessException {
for (int i = 0; i < 20_000; i++) {
testIntrinsic(bytes, T_BOOLEAN);
}
}
// ok, but shouldn't be intrinsified due the non-constant type
private static void testIntrinsicWithNonConstantType()
throws InvocationTargetException, IllegalAccessException {
type = T_BOOLEAN;
for (int i = 0; i < 20_000; i++) {
testIntrinsic(bytes, type);
}
}
private static int testIntrinsic(byte[] bytes, int type)
throws InvocationTargetException, IllegalAccessException {
return (int) vectorizedHashCode.invoke(null, bytes, 0, 256, 1, type);
}
}
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