Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/FixedGuardNode.java @ 5387:b6aaf6de4053
use dependencies collection instead of explicit guard fields
(because that's all that guards are: additional dependencies)
author | Lukas Stadler <lukas.stadler@jku.at> |
---|---|
date | Fri, 11 May 2012 15:17:17 +0200 |
parents | 0ebd9cfdc11f |
children | 0364a2a874b8 |
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/* * Copyright (c) 2011, 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.nodes; import com.oracle.graal.cri.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; import com.oracle.max.cri.ri.*; public final class FixedGuardNode extends FixedWithNextNode implements Simplifiable, Lowerable, LIRLowerable, Node.IterableNodeType { @Input private final NodeInputList<BooleanNode> conditions; private final RiDeoptReason deoptReason; private final RiDeoptAction action; private final long leafGraphId; public FixedGuardNode(BooleanNode condition, RiDeoptReason deoptReason, RiDeoptAction action, long leafGraphId) { super(StampFactory.illegal()); this.action = action; this.leafGraphId = leafGraphId; this.conditions = new NodeInputList<>(this, new BooleanNode[] {condition}); this.deoptReason = deoptReason; } @Override public void generate(LIRGeneratorTool gen) { for (BooleanNode condition : conditions()) { gen.emitGuardCheck(condition, deoptReason, action, leafGraphId); } } public void addCondition(BooleanNode x) { conditions.add(x); } public NodeInputList<BooleanNode> conditions() { return conditions; } @Override public void simplify(SimplifierTool tool) { for (BooleanNode n : conditions.snapshot()) { if (n instanceof ConstantNode) { ConstantNode c = (ConstantNode) n; if (c.asConstant().asBoolean()) { conditions.remove(n); } else { FixedNode next = this.next(); if (next != null) { tool.deleteBranch(next); } setNext(graph().add(new DeoptimizeNode(RiDeoptAction.InvalidateRecompile, deoptReason, leafGraphId))); return; } } } if (conditions.isEmpty()) { ((StructuredGraph) graph()).removeFixed(this); } } @Override public void lower(CiLoweringTool tool) { AnchorNode newAnchor = graph().add(new AnchorNode()); for (BooleanNode b : conditions) { newAnchor.dependencies().add(tool.createGuard(b, deoptReason, action, leafGraphId)); } ((StructuredGraph) graph()).replaceFixedWithFixed(this, newAnchor); } }