Mercurial > hg > graal-compiler
view graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/phases/CanonicalizerPhase.java @ 3480:2423a432fa6b
changes to Node structure (incomplete)
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Thu, 28 Jul 2011 08:18:43 +0200 |
parents | 034a4db85c59 |
children | e04e88087e98 |
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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.max.graal.compiler.phases; import com.oracle.max.graal.compiler.*; import com.oracle.max.graal.graph.*; import com.oracle.max.graal.graph.collections.*; public class CanonicalizerPhase extends Phase { private static final int MAX_ITERATION_PER_NODE = 10; private boolean newNodes; public CanonicalizerPhase() { this(false); } public CanonicalizerPhase(boolean newNodes) { this.newNodes = newNodes; } @Override protected void run(Graph graph) { NodeWorkList nodeWorkList = graph.createNodeWorkList(!newNodes, MAX_ITERATION_PER_NODE); if (newNodes) { nodeWorkList.addAll(graph.getNewNodes()); } for (Node node : nodeWorkList) { CanonicalizerOp op = node.lookup(CanonicalizerOp.class); if (op != null) { Node canonical = op.canonical(node); if (canonical != node) { node.replaceAndDelete(canonical); nodeWorkList.replaced(canonical, node, true, EdgeType.USAGES); //System.out.println("-->" + n + " canonicalized to " + canonical); GraalMetrics.NodesCanonicalized++; } } } } public interface CanonicalizerOp extends Op { Node canonical(Node node); } }