001/*
002 * Copyright (c) 2014, 2014, 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.meta;
024
025import jdk.internal.jvmci.meta.*;
026
027import com.oracle.graal.compiler.common.type.*;
028import com.oracle.graal.hotspot.nodes.type.*;
029import com.oracle.graal.nodes.spi.*;
030
031public class HotSpotStampProvider implements StampProvider {
032
033    private final KlassPointerStamp klassStamp;
034
035    private final KlassPointerStamp klassNonNullStamp;
036
037    @SuppressWarnings("unused") private final Kind wordKind;
038
039    public HotSpotStampProvider(Kind wordKind) {
040        this.wordKind = wordKind;
041        klassStamp = new KlassPointerStamp(false, false, wordKind);
042        klassNonNullStamp = new KlassPointerStamp(true, false, wordKind);
043    }
044
045    public KlassPointerStamp klass() {
046        return klassStamp;
047    }
048
049    public KlassPointerStamp klassNonNull() {
050        return klassNonNullStamp;
051    }
052
053    public Stamp createHubStamp(ObjectStamp object) {
054        return klassNonNull();
055    }
056
057    public Stamp createMethodStamp() {
058        return MethodPointerStamp.methodNonNull();
059    }
060
061    public Stamp createHubStamp(boolean nonNull) {
062        return nonNull ? klassNonNullStamp : klassStamp;
063    }
064}