ArrayCopyNode.java revision 12995:5e441a7ec5e3 
1/*
2 * Copyright (c) 2013, 2016, 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 */
23package org.graalvm.compiler.hotspot.replacements.arraycopy;
24
25import static org.graalvm.compiler.core.common.LocationIdentity.any;
26
27import org.graalvm.compiler.core.common.LocationIdentity;
28import org.graalvm.compiler.graph.NodeClass;
29import org.graalvm.compiler.nodeinfo.NodeInfo;
30import org.graalvm.compiler.nodes.NamedLocationIdentity;
31import org.graalvm.compiler.nodes.ValueNode;
32import org.graalvm.compiler.nodes.spi.Lowerable;
33import org.graalvm.compiler.nodes.spi.LoweringTool;
34import org.graalvm.compiler.replacements.nodes.BasicArrayCopyNode;
35
36import jdk.vm.ci.meta.JavaKind;
37
38@NodeInfo
39public final class ArrayCopyNode extends BasicArrayCopyNode implements Lowerable {
40
41    public static final NodeClass<ArrayCopyNode> TYPE = NodeClass.create(ArrayCopyNode.class);
42
43    private JavaKind elementKind;
44
45    public ArrayCopyNode(int bci, ValueNode src, ValueNode srcPos, ValueNode dst, ValueNode dstPos, ValueNode length) {
46        super(TYPE, src, srcPos, dst, dstPos, length, null, bci);
47        elementKind = ArrayCopySnippets.Templates.selectComponentKind(this);
48    }
49
50    @Override
51    public LocationIdentity getLocationIdentity() {
52        if (elementKind == null) {
53            elementKind = ArrayCopySnippets.Templates.selectComponentKind(this);
54        }
55        if (elementKind != null) {
56            return NamedLocationIdentity.getArrayLocation(elementKind);
57        }
58        return any();
59    }
60
61    @Override
62    public void lower(LoweringTool tool) {
63        tool.getLowerer().lower(this, tool);
64    }
65}
66