1/*
2 * Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23package org.graalvm.compiler.nodes.calc;
24
25import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_1;
26import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;
27
28import org.graalvm.compiler.core.common.type.ArithmeticOpTable;
29import org.graalvm.compiler.core.common.type.ArithmeticOpTable.UnaryOp.Not;
30import org.graalvm.compiler.core.common.type.Stamp;
31import org.graalvm.compiler.graph.NodeClass;
32import org.graalvm.compiler.graph.spi.CanonicalizerTool;
33import org.graalvm.compiler.lir.gen.ArithmeticLIRGeneratorTool;
34import org.graalvm.compiler.nodeinfo.NodeInfo;
35import org.graalvm.compiler.nodes.ValueNode;
36import org.graalvm.compiler.nodes.spi.ArithmeticLIRLowerable;
37import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
38import org.graalvm.compiler.nodes.spi.StampInverter;
39
40/**
41 * Binary negation of long or integer values.
42 */
43@NodeInfo(cycles = CYCLES_1, size = SIZE_1)
44public final class NotNode extends UnaryArithmeticNode<Not> implements ArithmeticLIRLowerable, NarrowableArithmeticNode, StampInverter {
45
46    public static final NodeClass<NotNode> TYPE = NodeClass.create(NotNode.class);
47
48    public NotNode(ValueNode x) {
49        super(TYPE, ArithmeticOpTable::getNot, x);
50    }
51
52    @Override
53    public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) {
54        ValueNode ret = super.canonical(tool, forValue);
55        if (ret != this) {
56            return ret;
57        }
58        if (forValue instanceof NotNode) {
59            return ((NotNode) forValue).getValue();
60        }
61        return this;
62    }
63
64    @Override
65    public void generate(NodeLIRBuilderTool nodeValueMap, ArithmeticLIRGeneratorTool gen) {
66        nodeValueMap.setResult(this, gen.emitNot(nodeValueMap.operand(getValue())));
67    }
68
69    @Override
70    public Stamp invertStamp(Stamp outStamp) {
71        return getArithmeticOp().foldStamp(outStamp);
72    }
73}
74