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

 *

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 *

 * 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.

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package org.graalvm.compiler.hotspot.amd64;

import static org.graalvm.compiler.hotspot.HotSpotBackend.Options.GraalArithmeticStubs;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_COS_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_EXP_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_LOG10_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_LOG_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_POW_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_SIN_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_TAN_STUB;

import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor;

import org.graalvm.compiler.core.common.spi.ForeignCallsProvider;

import org.graalvm.compiler.debug.DebugHandlersFactory;

import org.graalvm.compiler.graph.Node;

import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;

import org.graalvm.compiler.hotspot.HotSpotGraalRuntimeProvider;

import org.graalvm.compiler.hotspot.meta.DefaultHotSpotLoweringProvider;

import org.graalvm.compiler.hotspot.meta.HotSpotProviders;

import org.graalvm.compiler.hotspot.meta.HotSpotRegistersProvider;

import org.graalvm.compiler.hotspot.nodes.profiling.ProfileNode;

import org.graalvm.compiler.hotspot.replacements.profiling.ProbabilisticProfileSnippets;

import org.graalvm.compiler.nodes.calc.FloatConvertNode;

import org.graalvm.compiler.nodes.spi.LoweringTool;

import org.graalvm.compiler.options.OptionValues;

import org.graalvm.compiler.replacements.amd64.AMD64ConvertSnippets;

import org.graalvm.compiler.replacements.nodes.BinaryMathIntrinsicNode.BinaryOperation;

import org.graalvm.compiler.replacements.nodes.UnaryMathIntrinsicNode.UnaryOperation;

import jdk.vm.ci.code.TargetDescription;

import jdk.vm.ci.hotspot.HotSpotConstantReflectionProvider;

import jdk.vm.ci.meta.MetaAccessProvider;

public class AMD64HotSpotLoweringProvider extends DefaultHotSpotLoweringProvider {

    private AMD64ConvertSnippets.Templates convertSnippets;

    private ProbabilisticProfileSnippets.Templates profileSnippets;

    public AMD64HotSpotLoweringProvider(HotSpotGraalRuntimeProvider runtime, MetaAccessProvider metaAccess, ForeignCallsProvider foreignCalls, HotSpotRegistersProvider registers,

                    HotSpotConstantReflectionProvider constantReflection, TargetDescription target) {

        super(runtime, metaAccess, foreignCalls, registers, constantReflection, target);

    }

    @Override

    public void initialize(OptionValues options, Iterable<DebugHandlersFactory> factories, HotSpotProviders providers, GraalHotSpotVMConfig config) {

        convertSnippets = new AMD64ConvertSnippets.Templates(options, factories, providers, providers.getSnippetReflection(), providers.getCodeCache().getTarget());

        profileSnippets = ProfileNode.Options.ProbabilisticProfiling.getValue(options)

        super.initialize(options, factories, providers, config);

    }

    @Override

    public void lower(Node n, LoweringTool tool) {

        if (n instanceof FloatConvertNode) {

            convertSnippets.lower((FloatConvertNode) n, tool);

        } else if (profileSnippets != null && n instanceof ProfileNode) {

            profileSnippets.lower((ProfileNode) n, tool);

        } else {

            super.lower(n, tool);

        }

    }

    @Override

    protected ForeignCallDescriptor toForeignCall(UnaryOperation operation) {

        if (GraalArithmeticStubs.getValue(runtime.getOptions())) {

            switch (operation) {

                case LOG:

                    return ARITHMETIC_LOG_STUB;

                case LOG10:

                    return ARITHMETIC_LOG10_STUB;

                case SIN:

                    return ARITHMETIC_SIN_STUB;

                case COS:

                    return ARITHMETIC_COS_STUB;

                case TAN:

                    return ARITHMETIC_TAN_STUB;

                case EXP:

                    return ARITHMETIC_EXP_STUB;

            }

        } else if (operation == UnaryOperation.EXP) {

            return operation.foreignCallDescriptor;

        }

        // Lower only using LIRGenerator

        return null;

    }

    @Override

    protected ForeignCallDescriptor toForeignCall(BinaryOperation operation) {

        if (GraalArithmeticStubs.getValue(runtime.getOptions())) {

            switch (operation) {

                case POW:

                    return ARITHMETIC_POW_STUB;

            }

        } else if (operation == BinaryOperation.POW) {

            return operation.foreignCallDescriptor;

        }

        // Lower only using LIRGenerator

        return null;

    }

    @Override

    public Integer smallestCompareWidth() {

        return 8;

    }

}