Mercurial > hg > truffle
view graal/com.oracle.graal.loop/src/com/oracle/graal/loop/phases/LoopTransformLowPhase.java @ 12355:cefad50507d8
Merge with hs25-b53
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Fri, 11 Oct 2013 10:38:03 +0200 |
parents | 063a712fe8d8 |
children | 8569b9e047cd |
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/* * Copyright (c) 2012, 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.loop.phases; import static com.oracle.graal.phases.GraalOptions.*; import com.oracle.graal.debug.*; import com.oracle.graal.graph.NodeClass.NodeClassIterator; import com.oracle.graal.loop.*; import com.oracle.graal.nodes.*; import com.oracle.graal.phases.*; public class LoopTransformLowPhase extends Phase { private static final DebugMetric UNSWITCHED = Debug.metric("Unswitched"); @Override protected void run(StructuredGraph graph) { if (graph.hasLoops()) { if (ReassociateInvariants.getValue()) { final LoopsData dataReassociate = new LoopsData(graph); Debug.scope("ReassociateInvariants", new Runnable() { @Override public void run() { for (LoopEx loop : dataReassociate.loops()) { loop.reassociateInvariants(); } } }); } if (LoopUnswitch.getValue()) { boolean unswitched; do { unswitched = false; final LoopsData dataUnswitch = new LoopsData(graph); for (LoopEx loop : dataUnswitch.loops()) { if (LoopPolicies.shouldTryUnswitch(loop)) { ControlSplitNode controlSplit = LoopTransformations.findUnswitchable(loop); if (controlSplit != null && LoopPolicies.shouldUnswitch(loop, controlSplit)) { if (Debug.isLogEnabled()) { logUnswitch(loop, controlSplit); } LoopTransformations.unswitch(loop, controlSplit); UNSWITCHED.increment(); Debug.dump(graph, "After unswitch %s", loop); unswitched = true; break; } } } } while (unswitched); } } } private static void logUnswitch(LoopEx loop, ControlSplitNode controlSplit) { StringBuilder sb = new StringBuilder("Unswitching "); sb.append(loop).append(" at ").append(controlSplit).append(" ["); NodeClassIterator it = controlSplit.successors().iterator(); while (it.hasNext()) { sb.append(controlSplit.probability((AbstractBeginNode) it.next())); if (it.hasNext()) { sb.append(", "); } } sb.append("]"); Debug.log(sb.toString()); } }