001/*
002 * Copyright (c) 2012, 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.replacements.amd64;
024
025import com.oracle.graal.compiler.common.calc.*;
026import com.oracle.graal.compiler.common.type.ArithmeticOpTable.FloatConvertOp;
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.calc.*;
033import com.oracle.graal.nodes.spi.*;
034
035/**
036 * This node has the semantics of the AMD64 floating point conversions. It is used in the lowering
037 * of the {@link FloatConvertNode} which, on AMD64 needs a {@link AMD64FloatConvertNode} plus some
038 * fixup code that handles the corner cases that differ between AMD64 and Java.
039 */
040@NodeInfo
041public final class AMD64FloatConvertNode extends UnaryArithmeticNode<FloatConvertOp> implements ArithmeticLIRLowerable {
042    public static final NodeClass<AMD64FloatConvertNode> TYPE = NodeClass.create(AMD64FloatConvertNode.class);
043
044    protected final FloatConvert op;
045
046    public AMD64FloatConvertNode(FloatConvert op, ValueNode value) {
047        super(TYPE, table -> table.getFloatConvert(op), value);
048        this.op = op;
049    }
050
051    @Override
052    public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) {
053        // nothing to do
054        return this;
055    }
056
057    public void generate(NodeValueMap nodeValueMap, ArithmeticLIRGenerator gen) {
058        nodeValueMap.setResult(this, gen.emitFloatConvert(op, nodeValueMap.operand(getValue())));
059    }
060}