001/*
002 * Copyright (c) 2013, 2015, 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.nodes.arithmetic;
024
025import jdk.internal.jvmci.meta.*;
026
027import com.oracle.graal.compiler.common.type.*;
028import com.oracle.graal.graph.*;
029import com.oracle.graal.nodeinfo.*;
030import com.oracle.graal.nodes.*;
031import com.oracle.graal.nodes.calc.*;
032import com.oracle.graal.nodes.spi.*;
033
034@NodeInfo
035public abstract class IntegerExactArithmeticSplitNode extends ControlSplitNode implements LIRLowerable {
036    public static final NodeClass<IntegerExactArithmeticSplitNode> TYPE = NodeClass.create(IntegerExactArithmeticSplitNode.class);
037
038    @Successor AbstractBeginNode next;
039    @Successor AbstractBeginNode overflowSuccessor;
040    @Input ValueNode x;
041    @Input ValueNode y;
042
043    protected IntegerExactArithmeticSplitNode(NodeClass<? extends IntegerExactArithmeticSplitNode> c, Stamp stamp, ValueNode x, ValueNode y, AbstractBeginNode next, AbstractBeginNode overflowSuccessor) {
044        super(c, stamp);
045        this.x = x;
046        this.y = y;
047        this.overflowSuccessor = overflowSuccessor;
048        this.next = next;
049    }
050
051    @Override
052    public AbstractBeginNode getPrimarySuccessor() {
053        return next;
054    }
055
056    @Override
057    public double probability(AbstractBeginNode successor) {
058        return successor == next ? 1 : 0;
059    }
060
061    public AbstractBeginNode getNext() {
062        return next;
063    }
064
065    public AbstractBeginNode getOverflowSuccessor() {
066        return overflowSuccessor;
067    }
068
069    public ValueNode getX() {
070        return x;
071    }
072
073    public ValueNode getY() {
074        return y;
075    }
076
077    @Override
078    public void generate(NodeLIRBuilderTool generator) {
079        generator.setResult(this, generateArithmetic(generator));
080        generator.emitOverflowCheckBranch(getOverflowSuccessor(), getNext(), stamp, probability(getOverflowSuccessor()));
081    }
082
083    protected abstract Value generateArithmetic(NodeLIRBuilderTool generator);
084
085    static void lower(LoweringTool tool, IntegerExactArithmeticNode node) {
086        if (node.asNode().graph().getGuardsStage() == StructuredGraph.GuardsStage.FIXED_DEOPTS) {
087            FloatingNode floatingNode = (FloatingNode) node;
088            FixedWithNextNode previous = tool.lastFixedNode();
089            FixedNode next = previous.next();
090            previous.setNext(null);
091            DeoptimizeNode deopt = floatingNode.graph().add(new DeoptimizeNode(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.ArithmeticException));
092            AbstractBeginNode normalBegin = floatingNode.graph().add(new BeginNode());
093            normalBegin.setNext(next);
094            IntegerExactArithmeticSplitNode split = node.createSplit(normalBegin, BeginNode.begin(deopt));
095            previous.setNext(split);
096            floatingNode.replaceAndDelete(split);
097        }
098    }
099}