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

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package org.graalvm.compiler.nodes.calc;

import org.graalvm.compiler.core.common.type.ArithmeticOpTable;

import org.graalvm.compiler.core.common.type.ArithmeticOpTable.UnaryOp;

import org.graalvm.compiler.core.common.type.Stamp;

import org.graalvm.compiler.graph.NodeClass;

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

import org.graalvm.compiler.nodeinfo.NodeInfo;

import org.graalvm.compiler.nodes.ArithmeticOperation;

import org.graalvm.compiler.nodes.ConstantNode;

import org.graalvm.compiler.nodes.NodeView;

import org.graalvm.compiler.nodes.ValueNode;

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

@NodeInfo

public abstract class UnaryArithmeticNode<OP> extends UnaryNode implements ArithmeticOperation, ArithmeticLIRLowerable {

    @SuppressWarnings("rawtypes") public static final NodeClass<UnaryArithmeticNode> TYPE = NodeClass.create(UnaryArithmeticNode.class);

    }

    protected final UnaryOp<OP> getOp(ValueNode forValue) {

    }

    @Override

    public final UnaryOp<OP> getArithmeticOp() {

        return getOp(getValue());

    }

    @Override

    public Stamp foldStamp(Stamp newStamp) {

        assert newStamp.isCompatible(getValue().stamp(NodeView.DEFAULT));

        return getOp(getValue()).foldStamp(newStamp);

    }

    @Override

    public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) {

        ValueNode synonym = findSynonym(forValue, getOp(forValue));

        if (synonym != null) {

            return synonym;

        }

        return this;

    }

    protected static <OP> ValueNode findSynonym(ValueNode forValue, UnaryOp<OP> op) {

        if (forValue.isConstant()) {

            return ConstantNode.forPrimitive(op.foldStamp(forValue.stamp(NodeView.DEFAULT)), op.foldConstant(forValue.asConstant()));

        }

        return null;

    }

}