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 * 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.nodes.aot;

import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN;

import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_16;

import org.graalvm.compiler.debug.GraalError;

import org.graalvm.compiler.graph.Node;

import org.graalvm.compiler.graph.NodeClass;

import org.graalvm.compiler.graph.spi.Canonicalizable;

import org.graalvm.compiler.graph.spi.CanonicalizerTool;

import org.graalvm.compiler.hotspot.HotSpotLIRGenerator;

import org.graalvm.compiler.lir.LIRFrameState;

import org.graalvm.compiler.nodeinfo.InputType;

import org.graalvm.compiler.nodeinfo.NodeInfo;

import org.graalvm.compiler.nodes.DeoptimizingNode;

import org.graalvm.compiler.nodes.FrameState;

import org.graalvm.compiler.nodes.NodeView;

import org.graalvm.compiler.nodes.ValueNode;

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

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

import org.graalvm.compiler.nodes.util.GraphUtil;

import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint;

import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;

import jdk.internal.vm.compiler.word.LocationIdentity;

import jdk.vm.ci.meta.Constant;

import jdk.vm.ci.meta.Value;

/**

 * A call to the VM via a regular stub.

 */

@NodeInfo(allowedUsageTypes = {InputType.Memory}, cycles = CYCLES_UNKNOWN, size = SIZE_16)

public class ResolveDynamicStubCall extends AbstractMemoryCheckpoint implements LIRLowerable, Canonicalizable, DeoptimizingNode.DeoptBefore, MemoryCheckpoint.Single {

    public static final NodeClass<ResolveDynamicStubCall> TYPE = NodeClass.create(ResolveDynamicStubCall.class);

    @OptionalInput protected ValueNode value;

    @OptionalInput(InputType.State) protected FrameState stateBefore;

    protected Constant constant;

    public ResolveDynamicStubCall(ValueNode value) {

        super(TYPE, value.stamp(NodeView.DEFAULT));

        this.value = value;

    }

    @NodeIntrinsic

    public static native Object resolveInvoke(Object value);

    @Override

    public Node canonical(CanonicalizerTool tool) {

        if (value != null) {

            constant = GraphUtil.foldIfConstantAndRemove(this, value);

        }

        return this;

    }

    @Override

    public void generate(NodeLIRBuilderTool gen) {

        assert constant != null : "Expected the value to fold: " + value;

        Value result;

        LIRFrameState fs = gen.state(this);

        assert fs != null : "The stateAfter is null";

        result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitResolveDynamicInvoke(constant, fs);

        gen.setResult(this, result);

    }

    @Override

    public boolean canDeoptimize() {

        return true;

    }

    @Override

        return LocationIdentity.any();

    }

    @Override

    public FrameState stateBefore() {

        return stateBefore;

    }

    @Override

    public void setStateBefore(FrameState f) {

        updateUsages(stateBefore, f);

        stateBefore = f;

    }

    @Override

    public void markDeleted() {

        throw GraalError.shouldNotReachHere("ResolveDynamicStubCall node deleted");

    }

}