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_2;
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.Abs;
30import org.graalvm.compiler.graph.NodeClass;
31import org.graalvm.compiler.graph.spi.CanonicalizerTool;
32import org.graalvm.compiler.lir.gen.ArithmeticLIRGeneratorTool;
33import org.graalvm.compiler.nodeinfo.NodeInfo;
34import org.graalvm.compiler.nodes.ValueNode;
35import org.graalvm.compiler.nodes.spi.ArithmeticLIRLowerable;
36import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
37
38/**
39 * Absolute value.
40 */
41@NodeInfo(cycles = CYCLES_2, size = SIZE_1)
42public final class AbsNode extends UnaryArithmeticNode<Abs> implements ArithmeticLIRLowerable, NarrowableArithmeticNode {
43    public static final NodeClass<AbsNode> TYPE = NodeClass.create(AbsNode.class);
44
45    public AbsNode(ValueNode x) {
46        super(TYPE, ArithmeticOpTable::getAbs, x);
47    }
48
49    @Override
50    public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) {
51        ValueNode ret = super.canonical(tool, forValue);
52        if (ret != this) {
53            return ret;
54        }
55        if (forValue instanceof AbsNode) {
56            return forValue;
57        }
58        return this;
59    }
60
61    @Override
62    public void generate(NodeLIRBuilderTool nodeValueMap, ArithmeticLIRGeneratorTool gen) {
63        nodeValueMap.setResult(this, gen.emitMathAbs(nodeValueMap.operand(getValue())));
64    }
65}
66