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The GraalVM compiler and the Graal-truffle optimizer.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
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 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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package jdk.graal.compiler.replacements.nodes.arithmetic;

import jdk.graal.compiler.core.common.type.IntegerStamp;
import jdk.graal.compiler.core.common.type.Stamp;
import jdk.graal.compiler.graph.NodeClass;
import jdk.graal.compiler.nodes.spi.SimplifierTool;
import jdk.graal.compiler.nodeinfo.NodeInfo;
import jdk.graal.compiler.nodes.AbstractBeginNode;
import jdk.graal.compiler.nodes.NodeView;
import jdk.graal.compiler.nodes.ValueNode;
import jdk.graal.compiler.nodes.calc.AddNode;
import jdk.graal.compiler.nodes.spi.NodeLIRBuilderTool;

import jdk.vm.ci.meta.Value;

import static jdk.graal.compiler.nodeinfo.NodeCycles.CYCLES_2;
import static jdk.graal.compiler.nodeinfo.NodeSize.SIZE_2;

@NodeInfo(cycles = CYCLES_2, cyclesRationale = "add+cmp", size = SIZE_2)
public final class IntegerAddExactSplitNode extends BinaryIntegerExactArithmeticSplitNode {
    public static final NodeClass TYPE = NodeClass.create(IntegerAddExactSplitNode.class);

    public IntegerAddExactSplitNode(Stamp stamp, ValueNode x, ValueNode y, AbstractBeginNode next, AbstractBeginNode overflowSuccessor) {
        super(TYPE, stamp, x, y, next, overflowSuccessor);
    }

    @Override
    protected Value generateArithmetic(NodeLIRBuilderTool gen) {
        return gen.getLIRGeneratorTool().getArithmetic().emitAdd(gen.operand(getX()), gen.operand(getY()), true);
    }

    @Override
    public void simplify(SimplifierTool tool) {
        NodeView view = NodeView.from(tool);
        if (!IntegerStamp.addCanOverflow((IntegerStamp) x.stamp(view), (IntegerStamp) y.stamp(view))) {
            tool.deleteBranch(overflowSuccessor);
            tool.addToWorkList(next);
            AddNode replacement = graph().unique(new AddNode(x, y));
            graph().replaceSplitWithFloating(this, replacement, next);
            tool.addToWorkList(replacement);
        }
    }
}