1 /*
   2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2019, Red Hat Inc. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  */
  24 
  25 
  26 
  27 package org.graalvm.compiler.hotspot.replacements;
  28 
  29 import org.graalvm.compiler.api.replacements.ClassSubstitution;
  30 import org.graalvm.compiler.api.replacements.MethodSubstitution;
  31 import org.graalvm.compiler.hotspot.HotSpotBackend;
  32 import org.graalvm.compiler.nodes.ComputeObjectAddressNode;
  33 import org.graalvm.compiler.word.Word;
  34 import jdk.internal.vm.compiler.word.WordFactory;
  35 
  36 @ClassSubstitution(className = "jdk.internal.util.ArraysSupport", optional = true)
  37 public class ArraysSupportSubstitutions {
  38 
  39     @SuppressWarnings("unused")
  40     @MethodSubstitution(isStatic = true)
  41     static int vectorizedMismatch(Object a, long aOffset, Object b, long bOffset, int length, int log2ArrayIndexScale) {
  42         Word aAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(a, aOffset));
  43         Word bAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(b, bOffset));
  44 
  45         return HotSpotBackend.vectorizedMismatch(aAddr, bAddr, length, log2ArrayIndexScale);
  46     }
  47 }