| /* |
| * Copyright (c) 2012, 2015, 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 org.graalvm.compiler.loop.phases; |
| |
| import org.graalvm.compiler.debug.Debug; |
| import org.graalvm.compiler.loop.LoopEx; |
| import org.graalvm.compiler.loop.LoopPolicies; |
| import org.graalvm.compiler.loop.LoopsData; |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| import org.graalvm.compiler.phases.tiers.PhaseContext; |
| |
| public class LoopPeelingPhase extends LoopPhase<LoopPolicies> { |
| |
| public LoopPeelingPhase(LoopPolicies policies) { |
| super(policies); |
| } |
| |
| @Override |
| @SuppressWarnings("try") |
| protected void run(StructuredGraph graph, PhaseContext context) { |
| if (graph.hasLoops()) { |
| LoopsData data = new LoopsData(graph); |
| try (Debug.Scope s = Debug.scope("peeling", data.getCFG())) { |
| for (LoopEx loop : data.outerFirst()) { |
| if (getPolicies().shouldPeel(loop, data.getCFG(), context.getMetaAccess())) { |
| Debug.log("Peeling %s", loop); |
| LoopTransformations.peel(loop); |
| Debug.dump(Debug.INFO_LOG_LEVEL, graph, "Peeling %s", loop); |
| } |
| } |
| data.deleteUnusedNodes(); |
| } catch (Throwable t) { |
| throw Debug.handle(t); |
| } |
| } |
| } |
| |
| @Override |
| public float codeSizeIncrease() { |
| return 5.0f; |
| } |
| } |
