1/*
2 * Copyright (c) 2009, 2015, 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.java;
24
25import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_8;
26import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_8;
27
28import org.graalvm.compiler.core.common.type.Stamp;
29import org.graalvm.compiler.graph.NodeClass;
30import org.graalvm.compiler.nodeinfo.NodeInfo;
31import org.graalvm.compiler.nodes.DeoptimizingFixedWithNextNode;
32import org.graalvm.compiler.nodes.FrameState;
33import org.graalvm.compiler.nodes.spi.Lowerable;
34import org.graalvm.compiler.nodes.spi.LoweringTool;
35
36/**
37 * The {@code AbstractNewObjectNode} is the base class for the new instance and new array nodes.
38 */
39@NodeInfo(cycles = CYCLES_8, cyclesRationale = "tlab alloc + header init", size = SIZE_8)
40public abstract class AbstractNewObjectNode extends DeoptimizingFixedWithNextNode implements Lowerable {
41
42    public static final NodeClass<AbstractNewObjectNode> TYPE = NodeClass.create(AbstractNewObjectNode.class);
43    protected final boolean fillContents;
44
45    protected AbstractNewObjectNode(NodeClass<? extends AbstractNewObjectNode> c, Stamp stamp, boolean fillContents, FrameState stateBefore) {
46        super(c, stamp, stateBefore);
47        this.fillContents = fillContents;
48    }
49
50    /**
51     * @return <code>true</code> if the object's contents should be initialized to zero/null.
52     */
53    public boolean fillContents() {
54        return fillContents;
55    }
56
57    @Override
58    public void lower(LoweringTool tool) {
59        tool.getLowerer().lower(this, tool);
60    }
61
62    @Override
63    public boolean canDeoptimize() {
64        return true;
65    }
66}
67