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55 lines
2.2 KiB
Java
55 lines
2.2 KiB
Java
/*
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* Copyright (c) 2025, 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 8359121
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* @summary Region node introduced by ArraysSupport.mismatch must be disconnected,
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* and not just put aside as dead: when simplifying
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* Proj -> Region -> If -> ...
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* into
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* Proj -> If -> ...
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* -> Region
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* the dead Region node must be removed from Proj's outputs.
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* @modules java.base/jdk.internal.util
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* @run main/othervm -Xcomp
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* -XX:CompileCommand=compileonly,compiler.igvn.RemoveDeadRegionFromVectorizedMismatchIntrinsic::test
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* compiler.igvn.RemoveDeadRegionFromVectorizedMismatchIntrinsic
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* @run main compiler.igvn.RemoveDeadRegionFromVectorizedMismatchIntrinsic
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*/
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package compiler.igvn;
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import jdk.internal.util.ArraysSupport;
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public class RemoveDeadRegionFromVectorizedMismatchIntrinsic {
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public static void main(String[] args) {
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ArraysSupport.mismatch(new int[0], new int[0], 0); // loads ArraysSupport
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test(new byte[0], new byte[0]);
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}
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public static int test(byte[] a, byte[] b) {
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int i = ArraysSupport.vectorizedMismatch(a, 0, b, 0, 0, 0);
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return i >= 0 ? i : 0;
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}
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}
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