Mercurial > hg > truffle
view graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/phases/RemoveValueProxyPhase.java @ 5210:e3e7542d78b7
Loop-closed form GraphBuidling
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Mon, 09 Apr 2012 19:15:41 +0200 |
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/* * Copyright (c) 2012, 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.compiler.phases; import com.oracle.graal.nodes.*; public class RemoveValueProxyPhase extends Phase { @Override protected void run(StructuredGraph graph) { for (ValueProxyNode vpn : graph.getNodes(ValueProxyNode.class)) { graph.replaceFloating(vpn, vpn.value()); } for (LoopExitNode exit : graph.getNodes(LoopExitNode.class)) { FrameState stateAfter = exit.stateAfter(); if (stateAfter != null) { exit.setStateAfter(null); if (stateAfter.usages().count() == 0) { stateAfter.safeDelete(); } } } } }