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/*
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* Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.graalvm.compiler.replacements.nodes.arithmetic;
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import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
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import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_2;
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import org.graalvm.compiler.core.common.type.Stamp;
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import org.graalvm.compiler.graph.NodeClass;
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import org.graalvm.compiler.graph.spi.Simplifiable;
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import org.graalvm.compiler.nodeinfo.NodeInfo;
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import org.graalvm.compiler.nodes.AbstractBeginNode;
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import org.graalvm.compiler.nodes.ControlSplitNode;
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import org.graalvm.compiler.nodes.ValueNode;
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import org.graalvm.compiler.nodes.spi.LIRLowerable;
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import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
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import jdk.vm.ci.meta.Value;
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@NodeInfo(cycles = CYCLES_2, cyclesRationale = "add+cmp", size = SIZE_2)
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public abstract class IntegerExactArithmeticSplitNode extends ControlSplitNode implements Simplifiable, LIRLowerable {
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public static final NodeClass<IntegerExactArithmeticSplitNode> TYPE = NodeClass.create(IntegerExactArithmeticSplitNode.class);
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@Successor AbstractBeginNode next;
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@Successor AbstractBeginNode overflowSuccessor;
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@Input ValueNode x;
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@Input ValueNode y;
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protected IntegerExactArithmeticSplitNode(NodeClass<? extends IntegerExactArithmeticSplitNode> c, Stamp stamp, ValueNode x, ValueNode y, AbstractBeginNode next,
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AbstractBeginNode overflowSuccessor) {
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super(c, stamp);
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this.x = x;
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this.y = y;
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this.overflowSuccessor = overflowSuccessor;
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this.next = next;
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}
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@Override
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public AbstractBeginNode getPrimarySuccessor() {
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return next;
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}
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@Override
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public double probability(AbstractBeginNode successor) {
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return successor == next ? 1 : 0;
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}
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@Override
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public boolean setProbability(AbstractBeginNode successor, double value) {
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// Successor probabilities for arithmetic split nodes are fixed.
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return false;
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}
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public AbstractBeginNode getNext() {
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return next;
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}
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public AbstractBeginNode getOverflowSuccessor() {
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return overflowSuccessor;
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}
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public void setNext(AbstractBeginNode next) {
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updatePredecessor(this.next, next);
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this.next = next;
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}
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public void setOverflowSuccessor(AbstractBeginNode overflowSuccessor) {
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updatePredecessor(this.overflowSuccessor, overflowSuccessor);
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this.overflowSuccessor = overflowSuccessor;
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}
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public ValueNode getX() {
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return x;
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}
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public ValueNode getY() {
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return y;
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}
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@Override
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public void generate(NodeLIRBuilderTool generator) {
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generator.setResult(this, generateArithmetic(generator));
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generator.emitOverflowCheckBranch(getOverflowSuccessor(), getNext(), stamp, probability(getOverflowSuccessor()));
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}
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protected abstract Value generateArithmetic(NodeLIRBuilderTool generator);
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@Override
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public int getSuccessorCount() {
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return 2;
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}
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}
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