Mercurial > hg > graal-compiler
view graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/phases/GlobalValueNumberingPhase.java @ 3115:222f60eb09a7
Replace If node with guard in case of deopt.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
---|---|
date | Tue, 28 Jun 2011 16:59:56 +0200 |
parents | 0dfaf5733c63 |
children | 034a4db85c59 |
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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.compiler.debug.*; import com.oracle.max.graal.graph.*; /** * Duplicates every node in the graph to test the implementation of the {@link com.oracle.max.graal.graph.Node#copy()} method in node subclasses. */ public class GlobalValueNumberingPhase extends Phase { @Override protected void run(Graph graph) { NodeBitMap visited = graph.createNodeBitMap(); for (Node n : graph.getNodes()) { apply(n, visited); } } private void apply(Node n, NodeBitMap visited) { if (n != null && !visited.isMarked(n)) { visited.mark(n); for (Node input : n.inputs()) { apply(input, visited); } Node newNode = n.graph().ideal(n); if (GraalOptions.TraceGVN && newNode != n) { TTY.println("GVN applied and new node is " + newNode); } } } }