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.lir.gen;
024
025import jdk.internal.jvmci.common.*;
026import jdk.internal.jvmci.meta.*;
027
028import com.oracle.graal.compiler.common.spi.*;
029
030/**
031 * Default implementation of {@link LIRKindTool}. Returns the normal Java kind for primitive types.
032 * Subclasses still have to implement {@link #getObjectKind}.
033 */
034public class DefaultLIRKindTool implements LIRKindTool {
035
036    private final PlatformKind wordKind;
037
038    public DefaultLIRKindTool(PlatformKind wordKind) {
039        this.wordKind = wordKind;
040    }
041
042    public LIRKind getIntegerKind(int bits) {
043        if (bits <= 8) {
044            return LIRKind.value(Kind.Byte);
045        } else if (bits <= 16) {
046            return LIRKind.value(Kind.Short);
047        } else if (bits <= 32) {
048            return LIRKind.value(Kind.Int);
049        } else {
050            assert bits <= 64;
051            return LIRKind.value(Kind.Long);
052        }
053    }
054
055    public LIRKind getFloatingKind(int bits) {
056        switch (bits) {
057            case 32:
058                return LIRKind.value(Kind.Float);
059            case 64:
060                return LIRKind.value(Kind.Double);
061            default:
062                throw JVMCIError.shouldNotReachHere();
063        }
064    }
065
066    public LIRKind getObjectKind() {
067        return LIRKind.reference(Kind.Object);
068    }
069
070    public LIRKind getWordKind() {
071        return LIRKind.value(wordKind);
072    }
073}