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