Mercurial > hg > graal-compiler
view graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/nodes/arithmetic/IntegerExactArithmeticSplitNode.java @ 23394:964f28c04d7b default tip
Don't fill the code cache with nmethods from CTW
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
---|---|
date | Fri, 05 Feb 2016 22:48:36 -0800 |
parents | 615f3bbbb174 |
children |
line wrap: on
line source
/* * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.replacements.nodes.arithmetic; import jdk.vm.ci.meta.DeoptimizationAction; import jdk.vm.ci.meta.DeoptimizationReason; import jdk.vm.ci.meta.Value; import com.oracle.graal.compiler.common.type.Stamp; import com.oracle.graal.graph.NodeClass; import com.oracle.graal.nodeinfo.NodeInfo; import com.oracle.graal.nodes.AbstractBeginNode; import com.oracle.graal.nodes.BeginNode; import com.oracle.graal.nodes.ControlSplitNode; import com.oracle.graal.nodes.DeoptimizeNode; import com.oracle.graal.nodes.FixedNode; import com.oracle.graal.nodes.FixedWithNextNode; import com.oracle.graal.nodes.StructuredGraph; import com.oracle.graal.nodes.ValueNode; import com.oracle.graal.nodes.calc.FloatingNode; import com.oracle.graal.nodes.spi.LIRLowerable; import com.oracle.graal.nodes.spi.LoweringTool; import com.oracle.graal.nodes.spi.NodeLIRBuilderTool; @NodeInfo public abstract class IntegerExactArithmeticSplitNode extends ControlSplitNode implements LIRLowerable { public static final NodeClass<IntegerExactArithmeticSplitNode> TYPE = NodeClass.create(IntegerExactArithmeticSplitNode.class); @Successor AbstractBeginNode next; @Successor AbstractBeginNode overflowSuccessor; @Input ValueNode x; @Input ValueNode y; protected IntegerExactArithmeticSplitNode(NodeClass<? extends IntegerExactArithmeticSplitNode> c, Stamp stamp, ValueNode x, ValueNode y, AbstractBeginNode next, AbstractBeginNode overflowSuccessor) { super(c, stamp); this.x = x; this.y = y; this.overflowSuccessor = overflowSuccessor; this.next = next; } @Override public AbstractBeginNode getPrimarySuccessor() { return next; } @Override public double probability(AbstractBeginNode successor) { return successor == next ? 1 : 0; } public AbstractBeginNode getNext() { return next; } public AbstractBeginNode getOverflowSuccessor() { return overflowSuccessor; } public ValueNode getX() { return x; } public ValueNode getY() { return y; } @Override public void generate(NodeLIRBuilderTool generator) { generator.setResult(this, generateArithmetic(generator)); generator.emitOverflowCheckBranch(getOverflowSuccessor(), getNext(), stamp, probability(getOverflowSuccessor())); } protected abstract Value generateArithmetic(NodeLIRBuilderTool generator); static void lower(LoweringTool tool, IntegerExactArithmeticNode node) { if (node.asNode().graph().getGuardsStage() == StructuredGraph.GuardsStage.FIXED_DEOPTS) { FloatingNode floatingNode = (FloatingNode) node; FixedWithNextNode previous = tool.lastFixedNode(); FixedNode next = previous.next(); previous.setNext(null); DeoptimizeNode deopt = floatingNode.graph().add(new DeoptimizeNode(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.ArithmeticException)); AbstractBeginNode normalBegin = floatingNode.graph().add(new BeginNode()); normalBegin.setNext(next); IntegerExactArithmeticSplitNode split = node.createSplit(normalBegin, BeginNode.begin(deopt)); previous.setNext(split); floatingNode.replaceAndDelete(split); } } }