1 /* 2 * Copyright (c) 2013, 2019, 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 24 25 package org.graalvm.compiler.core.phases; 26 27 import static org.graalvm.compiler.core.common.GraalOptions.ConditionalElimination; 28 import static org.graalvm.compiler.core.common.GraalOptions.ImmutableCode; 29 import static org.graalvm.compiler.core.common.GraalOptions.OptDeoptimizationGrouping; 30 import static org.graalvm.compiler.core.common.GraalOptions.OptFloatingReads; 31 import static org.graalvm.compiler.core.common.GraalOptions.OptLoopTransform; 32 import static org.graalvm.compiler.core.common.GraalOptions.PartialUnroll; 33 import static org.graalvm.compiler.core.common.GraalOptions.ReassociateInvariants; 34 import static org.graalvm.compiler.core.common.GraalOptions.VerifyHeapAtReturn; 35 import static org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations.GuardTargets; 36 import static org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations.NonDeoptGuardTargets; 37 import static org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations.Options.MitigateSpeculativeExecutionAttacks; 38 39 import org.graalvm.compiler.loop.DefaultLoopPolicies; 40 import org.graalvm.compiler.loop.LoopPolicies; 41 import org.graalvm.compiler.loop.phases.LoopPartialUnrollPhase; 42 import org.graalvm.compiler.loop.phases.LoopSafepointEliminationPhase; 43 import org.graalvm.compiler.loop.phases.ReassociateInvariantPhase; 44 import org.graalvm.compiler.nodes.spi.LoweringTool; 45 import org.graalvm.compiler.options.OptionValues; 46 import org.graalvm.compiler.phases.PhaseSuite; 47 import org.graalvm.compiler.phases.common.CanonicalizerPhase; 48 import org.graalvm.compiler.phases.common.DeoptimizationGroupingPhase; 49 import org.graalvm.compiler.phases.common.FloatingReadPhase; 50 import org.graalvm.compiler.phases.common.FrameStateAssignmentPhase; 51 import org.graalvm.compiler.phases.common.GuardLoweringPhase; 52 import org.graalvm.compiler.phases.common.IncrementalCanonicalizerPhase; 53 import org.graalvm.compiler.phases.common.InsertGuardFencesPhase; 54 import org.graalvm.compiler.phases.common.IterativeConditionalEliminationPhase; 55 import org.graalvm.compiler.phases.common.LockEliminationPhase; 56 import org.graalvm.compiler.phases.common.LoopSafepointInsertionPhase; 57 import org.graalvm.compiler.phases.common.LoweringPhase; 58 import org.graalvm.compiler.phases.common.OptimizeDivPhase; 59 import org.graalvm.compiler.phases.common.VerifyHeapAtReturnPhase; 60 import org.graalvm.compiler.phases.common.WriteBarrierAdditionPhase; 61 import org.graalvm.compiler.phases.tiers.MidTierContext; 62 63 public class MidTier extends PhaseSuite<MidTierContext> { 64 65 public MidTier(OptionValues options) { 66 CanonicalizerPhase canonicalizer = new CanonicalizerPhase(); 67 if (ImmutableCode.getValue(options)) { 68 canonicalizer.disableReadCanonicalization(); 69 } 70 71 appendPhase(new LockEliminationPhase()); 72 73 if (OptFloatingReads.getValue(options)) { 74 appendPhase(new IncrementalCanonicalizerPhase<>(canonicalizer, new FloatingReadPhase())); 75 } 76 77 if (ConditionalElimination.getValue(options)) { 78 appendPhase(new IterativeConditionalEliminationPhase(canonicalizer, true)); 79 } 80 81 appendPhase(new LoopSafepointEliminationPhase()); 82 83 appendPhase(new LoopSafepointInsertionPhase()); 84 85 appendPhase(new GuardLoweringPhase()); 86 87 if (MitigateSpeculativeExecutionAttacks.getValue(options) == GuardTargets || MitigateSpeculativeExecutionAttacks.getValue(options) == NonDeoptGuardTargets) { 88 appendPhase(new InsertGuardFencesPhase()); 89 } 90 91 if (VerifyHeapAtReturn.getValue(options)) { 92 appendPhase(new VerifyHeapAtReturnPhase()); 93 } 94 95 appendPhase(new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.MID_TIER)); 96 97 appendPhase(new OptimizeDivPhase()); 98 99 appendPhase(new FrameStateAssignmentPhase()); 100 101 LoopPolicies loopPolicies = createLoopPolicies(); 102 if (OptLoopTransform.getValue(options)) { 103 if (PartialUnroll.getValue(options)) { 104 appendPhase(new LoopPartialUnrollPhase(loopPolicies, canonicalizer)); 105 } 106 } 107 if (ReassociateInvariants.getValue(options)) { 108 appendPhase(new ReassociateInvariantPhase()); 109 } 110 111 if (OptDeoptimizationGrouping.getValue(options)) { 112 appendPhase(new DeoptimizationGroupingPhase()); 113 } 114 115 appendPhase(canonicalizer); 116 117 appendPhase(new WriteBarrierAdditionPhase()); 118 } 119 120 public LoopPolicies createLoopPolicies() { 121 return new DefaultLoopPolicies(); 122 } 123 }