Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/ConditionAnchorNode.java @ 12714:655c87d8d3c2
added SnippetPreparationTime metric
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 08 Nov 2013 10:56:23 +0100 |
parents | 0fa39f034839 |
children | 27c04ee36dcb |
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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.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; @NodeInfo(nameTemplate = "ConditionAnchor(!={p#negated})") public final class ConditionAnchorNode extends FixedWithNextNode implements Canonicalizable, Lowerable, GuardingNode { @Input private LogicNode condition; private boolean negated; public ConditionAnchorNode(LogicNode condition) { this(condition, false); } public ConditionAnchorNode(LogicNode condition, boolean negated) { super(StampFactory.dependency()); this.negated = negated; this.condition = condition; } public LogicNode condition() { return condition; } private void setCondition(LogicNode x) { updateUsages(condition, x); condition = x; } public boolean isNegated() { return negated; } @Override public String toString(Verbosity verbosity) { if (verbosity == Verbosity.Name && negated) { return "!" + super.toString(verbosity); } else { return super.toString(verbosity); } } @Override public Node canonical(CanonicalizerTool tool) { if (condition instanceof LogicNegationNode) { LogicNegationNode negation = (LogicNegationNode) condition; setCondition(negation.getInput()); negated = !negated; } if (condition instanceof LogicConstantNode) { LogicConstantNode c = (LogicConstantNode) condition; if (c.getValue() != negated) { this.replaceAtUsages(null); return null; } else { return graph().add(new ValueAnchorNode(null)); } } return this; } @Override public void lower(LoweringTool tool) { if (graph().getGuardsStage() == StructuredGraph.GuardsStage.FIXED_DEOPTS) { ValueAnchorNode newAnchor = graph().add(new ValueAnchorNode(null)); graph().replaceFixedWithFixed(this, newAnchor); } } }