1 /*

     2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 package org.graalvm.compiler.replacements.aarch64;

    24 

    25 import org.graalvm.compiler.api.replacements.ClassSubstitution;

    26 import org.graalvm.compiler.api.replacements.MethodSubstitution;

    27 import org.graalvm.compiler.replacements.nodes.ArrayCompareToNode;

    28 

    29 import jdk.vm.ci.meta.JavaKind;

    30 

    31 // JaCoCo Exclude

    32 

    33 /**

    34  * Substitutions for {@code java.lang.StringUTF16} methods.

    35  *

    36  * Since JDK 9.

    37  */

    38 @ClassSubstitution(className = "java.lang.StringUTF16", optional = true)

    39 public class AArch64StringUTF16Substitutions {

    40 

    41     /**

    42      * @param value is char[]

    43      * @param other is char[]

    44      */

    45     @MethodSubstitution

    46     public static int compareTo(byte[] value, byte[] other) {

    47         return ArrayCompareToNode.compareTo(value, other, value.length, other.length, JavaKind.Char, JavaKind.Char);

    48     }

    49 

    50     /**

    51      * @param value is char[]

    52      * @param other is byte[]

    53      */

    54     @MethodSubstitution

    55     public static int compareToLatin1(byte[] value, byte[] other) {

    56         /*

    57          * Swapping array arguments because intrinsic expects order to be byte[]/char[] but kind

    58          * arguments stay in original order.

    59          */

    60         return ArrayCompareToNode.compareTo(other, value, other.length, value.length, JavaKind.Char, JavaKind.Byte);

    61     }

    62 

    63 }