UnsafeArrayCopyNode.java revision 13083:b9a173f12fe6 
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.api.word.LocationIdentity.any;
26import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_256;
27import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_64;
28
29import org.graalvm.api.word.LocationIdentity;
30import org.graalvm.compiler.core.common.type.StampFactory;
31import org.graalvm.compiler.graph.NodeClass;
32import org.graalvm.compiler.nodeinfo.InputType;
33import org.graalvm.compiler.nodeinfo.NodeInfo;
34import org.graalvm.compiler.nodes.NamedLocationIdentity;
35import org.graalvm.compiler.nodes.ValueNode;
36import org.graalvm.compiler.nodes.extended.ArrayRangeWriteNode;
37import org.graalvm.compiler.nodes.memory.MemoryAccess;
38import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
39import org.graalvm.compiler.nodes.memory.MemoryNode;
40import org.graalvm.compiler.nodes.spi.Lowerable;
41import org.graalvm.compiler.nodes.spi.LoweringTool;
42import org.graalvm.compiler.replacements.SnippetTemplate.Arguments;
43
44import jdk.vm.ci.meta.JavaKind;
45
46@NodeInfo(allowedUsageTypes = {InputType.Memory}, cycles = CYCLES_256, size = SIZE_64)
47public final class UnsafeArrayCopyNode extends ArrayRangeWriteNode implements Lowerable, MemoryCheckpoint.Single, MemoryAccess {
48
49    public static final NodeClass<UnsafeArrayCopyNode> TYPE = NodeClass.create(UnsafeArrayCopyNode.class);
50    @Input ValueNode src;
51    @Input ValueNode srcPos;
52    @Input ValueNode dest;
53    @Input ValueNode destPos;
54    @Input ValueNode length;
55    @OptionalInput ValueNode layoutHelper;
56
57    @OptionalInput(InputType.Memory) MemoryNode lastLocationAccess;
58
59    protected JavaKind elementKind;
60
61    public UnsafeArrayCopyNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, ValueNode layoutHelper, JavaKind elementKind) {
62        super(TYPE, StampFactory.forVoid());
63        assert layoutHelper == null || elementKind == null;
64        this.src = src;
65        this.srcPos = srcPos;
66        this.dest = dest;
67        this.destPos = destPos;
68        this.length = length;
69        this.layoutHelper = layoutHelper;
70        this.elementKind = elementKind;
71    }
72
73    public UnsafeArrayCopyNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, JavaKind elementKind) {
74        this(src, srcPos, dest, destPos, length, null, elementKind);
75    }
76
77    public UnsafeArrayCopyNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, ValueNode layoutHelper) {
78        this(src, srcPos, dest, destPos, length, layoutHelper, null);
79    }
80
81    @Override
82    public ValueNode getArray() {
83        return dest;
84    }
85
86    @Override
87    public ValueNode getIndex() {
88        return destPos;
89    }
90
91    @Override
92    public ValueNode getLength() {
93        return length;
94    }
95
96    @Override
97    public boolean isObjectArray() {
98        return elementKind == JavaKind.Object;
99    }
100
101    @Override
102    public boolean isInitialization() {
103        return false;
104    }
105
106    public JavaKind getElementKind() {
107        return elementKind;
108    }
109
110    @Override
111    public void lower(LoweringTool tool) {
112        if (graph().getGuardsStage().areFrameStatesAtDeopts()) {
113            UnsafeArrayCopySnippets.Templates templates = tool.getReplacements().getSnippetTemplateCache(UnsafeArrayCopySnippets.Templates.class);
114            templates.lower(this, tool);
115        }
116    }
117
118    public void addSnippetArguments(Arguments args) {
119        args.add("src", src);
120        args.add("srcPos", srcPos);
121        args.add("dest", dest);
122        args.add("destPos", destPos);
123        args.add("length", length);
124        if (layoutHelper != null) {
125            args.add("layoutHelper", layoutHelper);
126        }
127    }
128
129    @Override
130    public LocationIdentity getLocationIdentity() {
131        if (elementKind != null) {
132            return NamedLocationIdentity.getArrayLocation(elementKind);
133        }
134        return any();
135    }
136
137    @Override
138    public MemoryNode getLastLocationAccess() {
139        return lastLocationAccess;
140    }
141
142    @Override
143    public void setLastLocationAccess(MemoryNode lla) {
144        updateUsagesInterface(lastLocationAccess, lla);
145        lastLocationAccess = lla;
146    }
147
148    @NodeIntrinsic
149    public static native void arraycopy(Object src, int srcPos, Object dest, int destPos, int length, @ConstantNodeParameter JavaKind elementKind);
150
151    @NodeIntrinsic
152    public static native void arraycopyPrimitive(Object src, int srcPos, Object dest, int destPos, int length, int layoutHelper);
153}
154