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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.nodes.calc;

import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_1;

import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;

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

import org.graalvm.compiler.core.common.type.ArithmeticOpTable.UnaryOp.Not;

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.lir.gen.ArithmeticLIRGeneratorTool;

import org.graalvm.compiler.nodeinfo.NodeInfo;

import org.graalvm.compiler.nodes.ValueNode;

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

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

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

/**

 * Binary negation of long or integer values.

 */

@NodeInfo(cycles = CYCLES_1, size = SIZE_1)

public final class NotNode extends UnaryArithmeticNode<Not> implements ArithmeticLIRLowerable, NarrowableArithmeticNode, StampInverter {

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

    protected NotNode(ValueNode x) {

    }

    public static ValueNode create(ValueNode x) {

        return canonicalize(null, x);

    }

    @Override

    public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) {

        ValueNode ret = super.canonical(tool, forValue);

        if (ret != this) {

            return ret;

        }

        return canonicalize(this, forValue);

    }

    private static ValueNode canonicalize(NotNode node, ValueNode x) {

        if (x instanceof NotNode) {

            return ((NotNode) x).getValue();

        }

        if (node != null) {

            return node;

        }

        return new NotNode(x);

    }

    @Override

    public void generate(NodeLIRBuilderTool nodeValueMap, ArithmeticLIRGeneratorTool gen) {

        nodeValueMap.setResult(this, gen.emitNot(nodeValueMap.operand(getValue())));

    }

    @Override

    public Stamp invertStamp(Stamp outStamp) {

        return getArithmeticOp().foldStamp(outStamp);

    }

}