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.ImmutableCode; 28 import static org.graalvm.compiler.phases.common.DeadCodeEliminationPhase.Optionality.Required; 29 30 import org.graalvm.compiler.core.common.GraalOptions; 31 import org.graalvm.compiler.nodes.spi.LoweringTool; 32 import org.graalvm.compiler.options.Option; 33 import org.graalvm.compiler.options.OptionKey; 34 import org.graalvm.compiler.options.OptionType; 35 import org.graalvm.compiler.options.OptionValues; 36 import org.graalvm.compiler.phases.PhaseSuite; 37 import org.graalvm.compiler.phases.common.CanonicalizerPhase; 38 import org.graalvm.compiler.phases.common.DeadCodeEliminationPhase; 39 import org.graalvm.compiler.phases.common.ExpandLogicPhase; 40 import org.graalvm.compiler.phases.common.FixReadsPhase; 41 import org.graalvm.compiler.phases.common.LoweringPhase; 42 import org.graalvm.compiler.phases.common.ProfileCompiledMethodsPhase; 43 import org.graalvm.compiler.phases.common.PropagateDeoptimizeProbabilityPhase; 44 import org.graalvm.compiler.phases.common.UseTrappingNullChecksPhase; 45 import org.graalvm.compiler.phases.schedule.SchedulePhase; 46 import org.graalvm.compiler.phases.schedule.SchedulePhase.SchedulingStrategy; 47 import org.graalvm.compiler.phases.tiers.LowTierContext; 48 49 public class LowTier extends PhaseSuite<LowTierContext> { 50 51 static class Options { 52 53 // @formatter:off 54 @Option(help = "", type = OptionType.Debug) 55 public static final OptionKey<Boolean> ProfileCompiledMethods = new OptionKey<>(false); 56 // @formatter:on 57 58 } 59 60 public LowTier(OptionValues options) { 61 CanonicalizerPhase canonicalizer = new CanonicalizerPhase(); 62 CanonicalizerPhase canonicalizerWithoutGVN = new CanonicalizerPhase(); 63 canonicalizerWithoutGVN.disableGVN(); 64 if (ImmutableCode.getValue(options)) { 65 canonicalizer.disableReadCanonicalization(); 66 canonicalizerWithoutGVN.disableReadCanonicalization(); 67 } 68 69 if (Options.ProfileCompiledMethods.getValue(options)) { 70 appendPhase(new ProfileCompiledMethodsPhase()); 71 } 72 73 appendPhase(new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.LOW_TIER)); 74 75 appendPhase(new ExpandLogicPhase()); 76 77 appendPhase(new FixReadsPhase(true, 78 new SchedulePhase(GraalOptions.StressTestEarlyReads.getValue(options) ? SchedulingStrategy.EARLIEST : SchedulingStrategy.LATEST_OUT_OF_LOOPS_IMPLICIT_NULL_CHECKS))); 79 80 appendPhase(canonicalizerWithoutGVN); 81 82 appendPhase(new UseTrappingNullChecksPhase()); 83 84 appendPhase(new DeadCodeEliminationPhase(Required)); 85 86 appendPhase(new PropagateDeoptimizeProbabilityPhase()); 87 88 appendPhase(new SchedulePhase(SchedulePhase.SchedulingStrategy.LATEST_OUT_OF_LOOPS)); 89 } 90 }