Mercurial > hg > graal-compiler
view graal/com.oracle.graal.virtual/src/com/oracle/graal/virtual/phases/ea/PartialEscapePhase.java @ 23209:f35e653aa876
moved @Option mechanism from JVMCI to Graal (GRAAL-1371)
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Mon, 21 Dec 2015 16:19:35 +0100 |
parents | 615f3bbbb174 |
children | 2afef5808af5 |
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/* * Copyright (c) 2011, 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.virtual.phases.ea; import static com.oracle.graal.compiler.common.GraalOptions.EscapeAnalysisIterations; import static com.oracle.graal.compiler.common.GraalOptions.EscapeAnalyzeOnly; import java.util.Set; import com.oracle.graal.graph.Node; import com.oracle.graal.nodes.StructuredGraph; import com.oracle.graal.nodes.cfg.ControlFlowGraph; import com.oracle.graal.nodes.spi.VirtualizableAllocation; import com.oracle.graal.nodes.virtual.VirtualObjectNode; import com.oracle.graal.options.Option; import com.oracle.graal.options.OptionType; import com.oracle.graal.options.OptionValue; import com.oracle.graal.phases.BasePhase; import com.oracle.graal.phases.common.CanonicalizerPhase; import com.oracle.graal.phases.schedule.SchedulePhase; import com.oracle.graal.phases.tiers.PhaseContext; public class PartialEscapePhase extends EffectsPhase<PhaseContext> { static class Options { //@formatter:off @Option(help = "", type = OptionType.Debug) public static final OptionValue<Boolean> OptEarlyReadElimination = new OptionValue<>(true); //@formatter:on } private final boolean readElimination; private final BasePhase<PhaseContext> cleanupPhase; public PartialEscapePhase(boolean iterative, CanonicalizerPhase canonicalizer) { this(iterative, Options.OptEarlyReadElimination.getValue(), canonicalizer, null); } public PartialEscapePhase(boolean iterative, CanonicalizerPhase canonicalizer, BasePhase<PhaseContext> cleanupPhase) { this(iterative, Options.OptEarlyReadElimination.getValue(), canonicalizer, cleanupPhase); } public PartialEscapePhase(boolean iterative, boolean readElimination, CanonicalizerPhase canonicalizer, BasePhase<PhaseContext> cleanupPhase) { super(iterative ? EscapeAnalysisIterations.getValue() : 1, canonicalizer); this.readElimination = readElimination; this.cleanupPhase = cleanupPhase; } @Override protected void postIteration(StructuredGraph graph, PhaseContext context, Set<Node> changedNodes) { super.postIteration(graph, context, changedNodes); if (cleanupPhase != null) { cleanupPhase.apply(graph, context); } } @Override protected void run(StructuredGraph graph, PhaseContext context) { if (VirtualUtil.matches(graph, EscapeAnalyzeOnly.getValue())) { if (readElimination || graph.getNodes().filterInterface(VirtualizableAllocation.class).isNotEmpty()) { runAnalysis(graph, context); } } } @Override protected Closure<?> createEffectsClosure(PhaseContext context, SchedulePhase schedule, ControlFlowGraph cfg) { for (VirtualObjectNode virtual : cfg.graph.getNodes(VirtualObjectNode.TYPE)) { virtual.resetObjectId(); } assert schedule != null; if (readElimination) { return new PEReadEliminationClosure(schedule, context.getMetaAccess(), context.getConstantReflection()); } else { return new PartialEscapeClosure.Final(schedule, context.getMetaAccess(), context.getConstantReflection()); } } }