001/*
002 * Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.nodes.calc;
024
025import com.oracle.graal.compiler.common.type.*;
026import com.oracle.graal.compiler.common.type.ArithmeticOpTable.UnaryOp.Not;
027import com.oracle.graal.graph.*;
028import com.oracle.graal.graph.spi.*;
029import com.oracle.graal.lir.gen.*;
030import com.oracle.graal.nodeinfo.*;
031import com.oracle.graal.nodes.*;
032import com.oracle.graal.nodes.spi.*;
033
034/**
035 * Binary negation of long or integer values.
036 */
037@NodeInfo
038public final class NotNode extends UnaryArithmeticNode<Not> implements ArithmeticLIRLowerable, NarrowableArithmeticNode {
039
040    public static final NodeClass<NotNode> TYPE = NodeClass.create(NotNode.class);
041
042    public NotNode(ValueNode x) {
043        super(TYPE, ArithmeticOpTable::getNot, x);
044    }
045
046    @Override
047    public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) {
048        ValueNode ret = super.canonical(tool, forValue);
049        if (ret != this) {
050            return ret;
051        }
052        if (forValue instanceof NotNode) {
053            return ((NotNode) forValue).getValue();
054        }
055        return this;
056    }
057
058    @Override
059    public void generate(NodeValueMap nodeValueMap, ArithmeticLIRGenerator gen) {
060        nodeValueMap.setResult(this, gen.emitNot(nodeValueMap.operand(getValue())));
061    }
062}