/*

 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.

 * Copyright (c) 2017, Red Hat Inc. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package org.graalvm.compiler.hotspot.meta;

import java.util.ListIterator;

import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;

import org.graalvm.compiler.hotspot.HotSpotGraalRuntimeProvider;

import org.graalvm.compiler.options.OptionValues;

import org.graalvm.compiler.phases.BasePhase;

import org.graalvm.compiler.phases.Phase;

import org.graalvm.compiler.phases.common.UseTrappingNullChecksPhase;

import org.graalvm.compiler.phases.schedule.SchedulePhase;

import org.graalvm.compiler.phases.tiers.LowTierContext;

import org.graalvm.compiler.phases.tiers.Suites;

import org.graalvm.compiler.phases.tiers.SuitesCreator;

/**

 * Subclass to factor out management of address lowering.

 */

public class AddressLoweringHotSpotSuitesProvider extends HotSpotSuitesProvider {

    private final Phase addressLowering;

    public AddressLoweringHotSpotSuitesProvider(SuitesCreator defaultSuitesCreator, GraalHotSpotVMConfig config, HotSpotGraalRuntimeProvider runtime,

                    Phase addressLowering) {

        super(defaultSuitesCreator, config, runtime);

        this.addressLowering = addressLowering;

    }

    @Override

    public Suites createSuites(OptionValues options) {

        Suites suites = super.createSuites(options);

        ListIterator<BasePhase<? super LowTierContext>> findPhase = suites.getLowTier().findPhase(UseTrappingNullChecksPhase.class);

        if (findPhase == null) {

            findPhase = suites.getLowTier().findPhase(SchedulePhase.class);

        }

        findPhase.previous();

        findPhase.add(addressLowering);

        return suites;

    }

}