1 /*
   2  * Copyright (c) 2015, 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.aarch64;
  26 
  27 import java.util.List;
  28 import java.util.ListIterator;
  29 
  30 import org.graalvm.compiler.debug.GraalError;
  31 import org.graalvm.compiler.java.DefaultSuitesCreator;
  32 import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration.Plugins;
  33 import org.graalvm.compiler.options.OptionValues;
  34 import org.graalvm.compiler.phases.BasePhase;
  35 import org.graalvm.compiler.phases.Phase;
  36 import org.graalvm.compiler.phases.PhaseSuite;
  37 import org.graalvm.compiler.phases.tiers.CompilerConfiguration;
  38 import org.graalvm.compiler.phases.tiers.LowTierContext;
  39 import org.graalvm.compiler.phases.tiers.Suites;
  40 
  41 public class AArch64SuitesCreator extends DefaultSuitesCreator {
  42     private final List<Class<? extends Phase>> insertReadReplacementBeforePositions;
  43 
  44     public AArch64SuitesCreator(CompilerConfiguration compilerConfiguration, Plugins plugins, List<Class<? extends Phase>> insertReadReplacementBeforePositions) {
  45         super(compilerConfiguration, plugins);
  46         this.insertReadReplacementBeforePositions = insertReadReplacementBeforePositions;
  47     }
  48 
  49     @Override
  50     public Suites createSuites(OptionValues options) {
  51         Suites suites = super.createSuites(options);
  52         ListIterator<BasePhase<? super LowTierContext>> findPhase = null;
  53         for (Class<? extends Phase> phase : insertReadReplacementBeforePositions) {
  54             findPhase = suites.getLowTier().findPhase(phase);
  55             if (findPhase != null) {
  56                 // Put AArch64ReadReplacementPhase right before the requested phase
  57                 while (PhaseSuite.findNextPhase(findPhase, phase)) {
  58                     // Search for last occurrence of SchedulePhase
  59                 }
  60                 findPhase.previous();
  61                 break;
  62             }
  63         }
  64         if (findPhase != null) {
  65             findPhase.add(new AArch64ReadReplacementPhase());
  66         } else {
  67             throw GraalError.shouldNotReachHere("Cannot find phase to insert AArch64ReadReplacementPhase");
  68         }
  69         return suites;
  70     }
  71 }