1 /*
   2  * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
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  23 package org.graalvm.compiler.core.phases;
  24 
  25 import static org.graalvm.compiler.core.common.GraalOptions.ConditionalElimination;
  26 import static org.graalvm.compiler.core.common.GraalOptions.FullUnroll;
  27 import static org.graalvm.compiler.core.common.GraalOptions.ImmutableCode;
  28 import static org.graalvm.compiler.core.common.GraalOptions.LoopPeeling;
  29 import static org.graalvm.compiler.core.common.GraalOptions.LoopUnswitch;
  30 import static org.graalvm.compiler.core.common.GraalOptions.OptConvertDeoptsToGuards;
  31 import static org.graalvm.compiler.core.common.GraalOptions.OptLoopTransform;
  32 import static org.graalvm.compiler.core.common.GraalOptions.PartialEscapeAnalysis;
  33 import static org.graalvm.compiler.core.common.GraalOptions.UseGraalInstrumentation;
  34 import static org.graalvm.compiler.phases.common.DeadCodeEliminationPhase.Optionality.Optional;
  35 
  36 import org.graalvm.compiler.loop.DefaultLoopPolicies;
  37 import org.graalvm.compiler.loop.LoopPolicies;
  38 import org.graalvm.compiler.loop.phases.LoopFullUnrollPhase;
  39 import org.graalvm.compiler.loop.phases.LoopPeelingPhase;
  40 import org.graalvm.compiler.loop.phases.LoopUnswitchingPhase;
  41 import org.graalvm.compiler.nodes.spi.LoweringTool;
  42 import org.graalvm.compiler.options.Option;
  43 import org.graalvm.compiler.options.OptionType;
  44 import org.graalvm.compiler.options.OptionValue;
  45 import org.graalvm.compiler.phases.PhaseSuite;
  46 import org.graalvm.compiler.phases.common.CanonicalizerPhase;
  47 import org.graalvm.compiler.phases.common.ConvertDeoptimizeToGuardPhase;
  48 import org.graalvm.compiler.phases.common.DeadCodeEliminationPhase;
  49 import org.graalvm.compiler.phases.common.IncrementalCanonicalizerPhase;
  50 import org.graalvm.compiler.phases.common.IterativeConditionalEliminationPhase;
  51 import org.graalvm.compiler.phases.common.LoweringPhase;
  52 import org.graalvm.compiler.phases.common.RemoveValueProxyPhase;
  53 import org.graalvm.compiler.phases.common.inlining.InliningPhase;
  54 import org.graalvm.compiler.phases.common.instrumentation.HighTierReconcileInstrumentationPhase;
  55 import org.graalvm.compiler.phases.tiers.HighTierContext;
  56 import org.graalvm.compiler.virtual.phases.ea.PartialEscapePhase;
  57 
  58 public class HighTier extends PhaseSuite<HighTierContext> {
  59 
  60     public static class Options {
  61 
  62         // @formatter:off
  63         @Option(help = "Enable inlining", type = OptionType.Expert)
  64         public static final OptionValue<Boolean> Inline = new OptionValue<>(true);
  65         // @formatter:on
  66     }
  67 
  68     public HighTier() {
  69         CanonicalizerPhase canonicalizer = new CanonicalizerPhase();
  70         if (ImmutableCode.getValue()) {
  71             canonicalizer.disableReadCanonicalization();
  72         }
  73 
  74         appendPhase(canonicalizer);
  75 
  76         if (Options.Inline.getValue()) {
  77             appendPhase(new InliningPhase(canonicalizer));
  78             appendPhase(new DeadCodeEliminationPhase(Optional));
  79 
  80             if (ConditionalElimination.getValue()) {
  81                 appendPhase(canonicalizer);
  82                 appendPhase(new IterativeConditionalEliminationPhase(canonicalizer, false));
  83             }
  84         }
  85 
  86         if (OptConvertDeoptsToGuards.getValue()) {
  87             appendPhase(new IncrementalCanonicalizerPhase<>(canonicalizer, new ConvertDeoptimizeToGuardPhase()));
  88         }
  89 
  90         LoopPolicies loopPolicies = createLoopPolicies();
  91         if (FullUnroll.getValue()) {
  92             appendPhase(new LoopFullUnrollPhase(canonicalizer, loopPolicies));
  93         }
  94 
  95         if (OptLoopTransform.getValue()) {
  96             if (LoopPeeling.getValue()) {
  97                 appendPhase(new LoopPeelingPhase(loopPolicies));
  98             }
  99             if (LoopUnswitch.getValue()) {
 100                 appendPhase(new LoopUnswitchingPhase(loopPolicies));
 101             }
 102         }
 103 
 104         appendPhase(canonicalizer);
 105 
 106         if (PartialEscapeAnalysis.getValue()) {
 107             appendPhase(new PartialEscapePhase(true, canonicalizer));
 108         }
 109         appendPhase(new RemoveValueProxyPhase());
 110 
 111         appendPhase(new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.HIGH_TIER));
 112         if (UseGraalInstrumentation.getValue()) {
 113             appendPhase(new HighTierReconcileInstrumentationPhase());
 114         }
 115     }
 116 
 117     public LoopPolicies createLoopPolicies() {
 118         return new DefaultLoopPolicies();
 119     }
 120 }