UnsafeMemoryLoadNode.java revision 12657:6ef01bd40ce2 
1/*
2 * Copyright (c) 2016, 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.nodes.extended;
24
25import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
26import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;
27
28import org.graalvm.compiler.core.common.LocationIdentity;
29import org.graalvm.compiler.core.common.type.StampFactory;
30import org.graalvm.compiler.graph.NodeClass;
31import org.graalvm.compiler.nodeinfo.NodeInfo;
32import org.graalvm.compiler.nodes.FixedWithNextNode;
33import org.graalvm.compiler.nodes.ValueNode;
34import org.graalvm.compiler.nodes.spi.Lowerable;
35import org.graalvm.compiler.nodes.spi.LoweringTool;
36
37import jdk.vm.ci.meta.JavaKind;
38
39/**
40 * Load of a value at a location specified as an absolute address.
41 */
42@NodeInfo(cycles = CYCLES_2, size = SIZE_1)
43public class UnsafeMemoryLoadNode extends FixedWithNextNode implements Lowerable {
44
45    public static final NodeClass<UnsafeMemoryLoadNode> TYPE = NodeClass.create(UnsafeMemoryLoadNode.class);
46
47    @Input protected ValueNode address;
48    protected final JavaKind kind;
49    protected final LocationIdentity locationIdentity;
50
51    public UnsafeMemoryLoadNode(ValueNode address, JavaKind kind, LocationIdentity locationIdentity) {
52        super(TYPE, StampFactory.forKind(kind.getStackKind()));
53        this.address = address;
54        this.kind = kind;
55        this.locationIdentity = locationIdentity;
56    }
57
58    public ValueNode getAddress() {
59        return address;
60    }
61
62    public JavaKind getKind() {
63        return kind;
64    }
65
66    @Override
67    public void lower(LoweringTool tool) {
68        tool.getLowerer().lower(this, tool);
69    }
70
71    public LocationIdentity getLocationIdentity() {
72        return locationIdentity;
73    }
74}
75