/*
 * Copyright (c) 2009 Sun Microsystems, Inc. All rights reserved.
 *
 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product that is
 * described in this document. In particular, and without limitation, these intellectual property rights may include one
 * or more of the U.S. patents listed at http://www.sun.com/patents and one or more additional patents or pending patent
 * applications in the U.S. and in other countries.
 *
 * U.S. Government Rights - Commercial software. Government users are subject to the Sun Microsystems, Inc. standard
 * license agreement and applicable provisions of the FAR and its supplements.
 *
 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or registered
 * trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks are used under license and
 * are trademarks or registered trademarks of SPARC International, Inc. in the U.S. and other countries.
 *
 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open Company, Ltd.
 */
package com.sun.hotspot.c1x;

import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;

import com.sun.cri.ci.CiKind;
import com.sun.cri.ri.RiField;
import com.sun.cri.ri.RiMethod;
import com.sun.cri.ri.RiRegisterConfig;
import com.sun.cri.ri.RiType;
import com.sun.cri.ri.RiType.Representation;
import com.sun.cri.xir.CiXirAssembler;
import com.sun.cri.xir.RiXirGenerator;
import com.sun.cri.xir.XirArgument;
import com.sun.cri.xir.XirSite;
import com.sun.cri.xir.XirSnippet;
import com.sun.cri.xir.XirTemplate;
import com.sun.cri.xir.CiXirAssembler.XirOperand;

/**
 *
 * @author Thomas Wuerthinger
 *
 */
public class HotSpotXirGenerator extends RiXirGenerator {

    private XirTemplate[] emptyTemplates = new XirTemplate[CiKind.values().length];
    private final HotSpotVMConfig config;

    public HotSpotXirGenerator(HotSpotVMConfig config) {
        this.config = config;
    }

    @Override
    public List<XirTemplate> buildTemplates(CiXirAssembler asm) {
        List<XirTemplate> templates = new ArrayList<XirTemplate>();
        for (int i = 0; i < CiKind.values().length; i++) {

            CiKind curKind = CiKind.values()[i];

            if (curKind == CiKind.Float || curKind == CiKind.Double)
                continue;

            if (CiKind.values()[i] == CiKind.Void) {
                asm.restart(CiKind.values()[i]);
                emptyTemplates[i] = asm.finishTemplate("empty-" + CiKind.values()[i]);
            } else {
                asm.restart();
                XirOperand result = asm.createTemp("result", CiKind.values()[i]);
                emptyTemplates[i] = asm.finishTemplate(result, "empty-" + CiKind.values()[i]);
            }
            templates.add(emptyTemplates[i]);
        }

        return templates;
    }

    @Override
    public XirSnippet genArrayLength(XirSite site, XirArgument array) {
        return new XirSnippet(emptyTemplates[CiKind.Int.ordinal()]);
    }

    @Override
    public XirSnippet genArrayLoad(XirSite site, XirArgument array, XirArgument index, XirArgument length, CiKind elementKind, RiType elementType) {
        return new XirSnippet(emptyTemplates[elementKind.ordinal()]);
    }

    @Override
    public XirSnippet genArrayStore(XirSite site, XirArgument array, XirArgument index, XirArgument length, XirArgument value, CiKind elementKind, RiType elementType) {
        return new XirSnippet(emptyTemplates[CiKind.Void.ordinal()]);
    }

    @Override
    public XirSnippet genCheckCast(XirSite site, XirArgument receiver, XirArgument hub, RiType type) {
        return new XirSnippet(emptyTemplates[CiKind.Object.ordinal()]);
    }

    @Override
    public XirSnippet genEntrypoint(XirSite site) {
        return new XirSnippet(emptyTemplates[CiKind.Void.ordinal()]);
    }

    @Override
    public XirSnippet genGetField(XirSite site, XirArgument receiver, RiField field) {
        return new XirSnippet(emptyTemplates[field.kind().ordinal()]);
    }

    @Override
    public XirSnippet genGetStatic(XirSite site, XirArgument staticTuple, RiField field) {
        return new XirSnippet(emptyTemplates[field.kind().ordinal()]);
    }

    @Override
    public XirSnippet genInstanceOf(XirSite site, XirArgument receiver, XirArgument hub, RiType type) {
        return new XirSnippet(emptyTemplates[CiKind.Boolean.ordinal()]);
    }

    @Override
    public XirSnippet genIntrinsic(XirSite site, XirArgument[] arguments, RiMethod method) {
        return null;
    }

    @Override
    public XirSnippet genInvokeInterface(XirSite site, XirArgument receiver, RiMethod method) {
        return new XirSnippet(emptyTemplates[CiKind.Word.ordinal()]);
    }

    @Override
    public XirSnippet genInvokeSpecial(XirSite site, XirArgument receiver, RiMethod method) {
        return new XirSnippet(emptyTemplates[CiKind.Word.ordinal()]);
    }

    @Override
    public XirSnippet genInvokeStatic(XirSite site, RiMethod method) {
        return new XirSnippet(emptyTemplates[CiKind.Word.ordinal()]);
    }

    @Override
    public XirSnippet genInvokeVirtual(XirSite site, XirArgument receiver, RiMethod method) {
        return new XirSnippet(emptyTemplates[CiKind.Word.ordinal()]);
    }

    @Override
    public XirSnippet genMonitorEnter(XirSite site, XirArgument receiver) {
        return new XirSnippet(emptyTemplates[CiKind.Void.ordinal()]);
    }

    @Override
    public XirSnippet genMonitorExit(XirSite site, XirArgument receiver) {
        return new XirSnippet(emptyTemplates[CiKind.Void.ordinal()]);
    }

    @Override
    public XirSnippet genNewArray(XirSite site, XirArgument length, CiKind elementKind, RiType componentType, RiType arrayType) {
        return new XirSnippet(emptyTemplates[CiKind.Object.ordinal()]);
    }

    @Override
    public XirSnippet genNewInstance(XirSite site, RiType type) {
        return new XirSnippet(emptyTemplates[CiKind.Object.ordinal()]);
    }

    @Override
    public XirSnippet genNewMultiArray(XirSite site, XirArgument[] lengths, RiType type) {
        return new XirSnippet(emptyTemplates[CiKind.Object.ordinal()]);
    }

    @Override
    public XirSnippet genPutField(XirSite site, XirArgument receiver, RiField field, XirArgument value) {
        return new XirSnippet(emptyTemplates[CiKind.Void.ordinal()]);
    }

    @Override
    public XirSnippet genPutStatic(XirSite site, XirArgument staticTuple, RiField field, XirArgument value) {
        return new XirSnippet(emptyTemplates[CiKind.Void.ordinal()]);
    }

    @Override
    public XirSnippet genResolveClass(XirSite site, RiType type, Representation representation) {
        return new XirSnippet(emptyTemplates[CiKind.Object.ordinal()]);
    }

    @Override
    public XirSnippet genSafepoint(XirSite site) {
        return new XirSnippet(emptyTemplates[CiKind.Void.ordinal()]);
    }

    @Override
    public XirSnippet genExceptionObject(XirSite site) {
        return new XirSnippet(emptyTemplates[CiKind.Object.ordinal()]);
    }

}