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.
  22  */
  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.ImmutableCode;
  27 import static org.graalvm.compiler.core.common.GraalOptions.OptDeoptimizationGrouping;
  28 import static org.graalvm.compiler.core.common.GraalOptions.OptEliminatePartiallyRedundantGuards;
  29 import static org.graalvm.compiler.core.common.GraalOptions.OptFloatingReads;
  30 import static org.graalvm.compiler.core.common.GraalOptions.OptPushThroughPi;
  31 import static org.graalvm.compiler.core.common.GraalOptions.OptReadElimination;
  32 import static org.graalvm.compiler.core.common.GraalOptions.ReassociateInvariants;
  33 import static org.graalvm.compiler.core.common.GraalOptions.UseGraalInstrumentation;
  34 import static org.graalvm.compiler.core.common.GraalOptions.VerifyHeapAtReturn;
  35 
  36 import org.graalvm.compiler.loop.phases.LoopSafepointEliminationPhase;
  37 import org.graalvm.compiler.loop.phases.ReassociateInvariantPhase;
  38 import org.graalvm.compiler.nodes.spi.LoweringTool;
  39 import org.graalvm.compiler.phases.PhaseSuite;
  40 import org.graalvm.compiler.phases.common.CanonicalizerPhase;
  41 import org.graalvm.compiler.phases.common.DeoptimizationGroupingPhase;
  42 import org.graalvm.compiler.phases.common.FloatingReadPhase;
  43 import org.graalvm.compiler.phases.common.FrameStateAssignmentPhase;
  44 import org.graalvm.compiler.phases.common.GuardLoweringPhase;
  45 import org.graalvm.compiler.phases.common.IncrementalCanonicalizerPhase;
  46 import org.graalvm.compiler.phases.common.IterativeConditionalEliminationPhase;
  47 import org.graalvm.compiler.phases.common.LockEliminationPhase;
  48 import org.graalvm.compiler.phases.common.LoopSafepointInsertionPhase;
  49 import org.graalvm.compiler.phases.common.LoweringPhase;
  50 import org.graalvm.compiler.phases.common.OptimizeGuardAnchorsPhase;
  51 import org.graalvm.compiler.phases.common.PushThroughPiPhase;
  52 import org.graalvm.compiler.phases.common.RemoveValueProxyPhase;
  53 import org.graalvm.compiler.phases.common.ValueAnchorCleanupPhase;
  54 import org.graalvm.compiler.phases.common.VerifyHeapAtReturnPhase;
  55 import org.graalvm.compiler.phases.common.instrumentation.MidTierReconcileInstrumentationPhase;
  56 import org.graalvm.compiler.phases.tiers.MidTierContext;
  57 import org.graalvm.compiler.virtual.phases.ea.EarlyReadEliminationPhase;
  58 
  59 public class MidTier extends PhaseSuite<MidTierContext> {
  60 
  61     public MidTier() {
  62         CanonicalizerPhase canonicalizer = new CanonicalizerPhase();
  63         if (ImmutableCode.getValue()) {
  64             canonicalizer.disableReadCanonicalization();
  65         }
  66 
  67         if (OptPushThroughPi.getValue()) {
  68             appendPhase(new PushThroughPiPhase());
  69         }
  70 
  71         appendPhase(canonicalizer);
  72 
  73         appendPhase(new ValueAnchorCleanupPhase());
  74         appendPhase(new LockEliminationPhase());
  75 
  76         if (OptReadElimination.getValue()) {
  77             appendPhase(new EarlyReadEliminationPhase(canonicalizer));
  78         }
  79 
  80         if (OptFloatingReads.getValue()) {
  81             appendPhase(new IncrementalCanonicalizerPhase<>(canonicalizer, new FloatingReadPhase()));
  82         }
  83         appendPhase(new RemoveValueProxyPhase());
  84 
  85         appendPhase(canonicalizer);
  86 
  87         if (OptEliminatePartiallyRedundantGuards.getValue()) {
  88             appendPhase(new OptimizeGuardAnchorsPhase());
  89         }
  90 
  91         if (ConditionalElimination.getValue()) {
  92             appendPhase(new IterativeConditionalEliminationPhase(canonicalizer, true));
  93         }
  94 
  95         if (OptEliminatePartiallyRedundantGuards.getValue()) {
  96             appendPhase(new OptimizeGuardAnchorsPhase());
  97         }
  98 
  99         appendPhase(canonicalizer);
 100 
 101         appendPhase(new IncrementalCanonicalizerPhase<>(canonicalizer, new LoopSafepointEliminationPhase()));
 102 
 103         appendPhase(new LoopSafepointInsertionPhase());
 104 
 105         appendPhase(new IncrementalCanonicalizerPhase<>(canonicalizer, new GuardLoweringPhase()));
 106 
 107         if (VerifyHeapAtReturn.getValue()) {
 108             appendPhase(new VerifyHeapAtReturnPhase());
 109         }
 110 
 111         appendPhase(new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.MID_TIER));
 112         if (UseGraalInstrumentation.getValue()) {
 113             appendPhase(new MidTierReconcileInstrumentationPhase());
 114         }
 115 
 116         appendPhase(new FrameStateAssignmentPhase());
 117 
 118         if (ReassociateInvariants.getValue()) {
 119             appendPhase(new ReassociateInvariantPhase());
 120         }
 121 
 122         if (OptDeoptimizationGrouping.getValue()) {
 123             appendPhase(new DeoptimizationGroupingPhase());
 124         }
 125 
 126         appendPhase(canonicalizer);
 127     }
 128 }