001/*
002 * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.hotspot.nodes;
024
025import jdk.internal.jvmci.meta.*;
026
027import com.oracle.graal.compiler.common.type.*;
028import com.oracle.graal.graph.*;
029import com.oracle.graal.nodeinfo.*;
030import com.oracle.graal.nodes.*;
031import com.oracle.graal.nodes.spi.*;
032
033/**
034 * A high-level intrinsic for getting an address inside of an object. During lowering it will be
035 * moved next to any uses to avoid creating a derived pointer that is live across a safepoint.
036 */
037@NodeInfo
038public final class ComputeObjectAddressNode extends FixedWithNextNode implements Lowerable {
039    public static final NodeClass<ComputeObjectAddressNode> TYPE = NodeClass.create(ComputeObjectAddressNode.class);
040
041    @Input ValueNode object;
042    @Input ValueNode offset;
043
044    public ComputeObjectAddressNode(ValueNode obj, ValueNode offset) {
045        super(TYPE, StampFactory.forKind(Kind.Long));
046        this.object = obj;
047        this.offset = offset;
048    }
049
050    @NodeIntrinsic
051    public static native long get(Object array, long offset);
052
053    @Override
054    public void lower(LoweringTool tool) {
055        tool.getLowerer().lower(this, tool);
056    }
057
058    public ValueNode getObject() {
059        return object;
060    }
061
062    public ValueNode getOffset() {
063        return offset;
064    }
065}