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.phases.common;
024
025import com.oracle.graal.graph.*;
026import com.oracle.graal.nodes.*;
027import com.oracle.graal.nodes.memory.address.*;
028import com.oracle.graal.phases.*;
029
030public class AddressLoweringPhase extends Phase {
031
032    public abstract static class AddressLowering {
033
034        public abstract AddressNode lower(ValueNode address);
035
036        public abstract AddressNode lower(ValueNode base, ValueNode offset);
037    }
038
039    private final AddressLowering lowering;
040
041    public AddressLoweringPhase(AddressLowering lowering) {
042        this.lowering = lowering;
043        assert lowering != null;
044    }
045
046    @Override
047    protected void run(StructuredGraph graph) {
048        for (Node node : graph.getNodes()) {
049            AddressNode lowered;
050            if (node instanceof RawAddressNode) {
051                RawAddressNode address = (RawAddressNode) node;
052                lowered = lowering.lower(address.getAddress());
053            } else if (node instanceof OffsetAddressNode) {
054                OffsetAddressNode address = (OffsetAddressNode) node;
055                lowered = lowering.lower(address.getBase(), address.getOffset());
056            } else {
057                continue;
058            }
059
060            node.replaceAndDelete(lowered);
061        }
062    }
063}