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.UseGraalInstrumentation; 28 import static org.graalvm.compiler.phases.common.DeadCodeEliminationPhase.Optionality.Required; 29 30 import org.graalvm.compiler.nodes.spi.LoweringTool; 31 import org.graalvm.compiler.options.Option; 32 import org.graalvm.compiler.options.OptionType; 33 import org.graalvm.compiler.options.OptionValue; 34 import org.graalvm.compiler.phases.PhaseSuite; 35 import org.graalvm.compiler.phases.common.CanonicalizerPhase; 36 import org.graalvm.compiler.phases.common.DeadCodeEliminationPhase; 37 import org.graalvm.compiler.phases.common.ExpandLogicPhase; 38 import org.graalvm.compiler.phases.common.IterativeConditionalEliminationPhase; 39 import org.graalvm.compiler.phases.common.LoweringPhase; 40 import org.graalvm.compiler.phases.common.ProfileCompiledMethodsPhase; 41 import org.graalvm.compiler.phases.common.RemoveValueProxyPhase; 42 import org.graalvm.compiler.phases.common.UseTrappingNullChecksPhase; 43 import org.graalvm.compiler.phases.common.instrumentation.InlineInstrumentationPhase; 44 import org.graalvm.compiler.phases.schedule.SchedulePhase; 45 import org.graalvm.compiler.phases.tiers.LowTierContext; 46 47 public class LowTier extends PhaseSuite<LowTierContext> { 48 49 static class Options { 50 51 // @formatter:off 52 @Option(help = "", type = OptionType.Debug) 53 public static final OptionValue<Boolean> ProfileCompiledMethods = new OptionValue<>(false); 54 // @formatter:on 55 56 } 57 58 public LowTier() { 59 CanonicalizerPhase canonicalizer = new CanonicalizerPhase(); 60 if (ImmutableCode.getValue()) { 61 canonicalizer.disableReadCanonicalization(); 62 } 63 64 if (Options.ProfileCompiledMethods.getValue()) { 65 appendPhase(new ProfileCompiledMethodsPhase()); 66 } 67 68 appendPhase(new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.LOW_TIER)); 69 if (UseGraalInstrumentation.getValue()) { 70 appendPhase(new InlineInstrumentationPhase()); 71 } 72 73 appendPhase(new RemoveValueProxyPhase()); 74 75 appendPhase(new ExpandLogicPhase()); 76 77 /* Cleanup IsNull checks resulting from MID_TIER/LOW_TIER lowering and ExpandLogic phase. */ 78 if (ConditionalElimination.getValue()) { 79 appendPhase(new IterativeConditionalEliminationPhase(canonicalizer, false)); 80 /* Canonicalizer may create some new ShortCircuitOrNodes so clean them up. */ 81 appendPhase(new ExpandLogicPhase()); 82 } 83 84 appendPhase(new UseTrappingNullChecksPhase()); 85 86 appendPhase(new DeadCodeEliminationPhase(Required)); 87 88 appendPhase(new SchedulePhase(SchedulePhase.SchedulingStrategy.FINAL_SCHEDULE)); 89 } 90 }