1 /*
   2  * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2017, Red Hat Inc. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  */
  24 
  25 
  26 package org.graalvm.compiler.hotspot.meta;
  27 
  28 import java.util.ListIterator;
  29 
  30 import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
  31 import org.graalvm.compiler.hotspot.HotSpotGraalRuntimeProvider;
  32 import org.graalvm.compiler.options.OptionValues;
  33 import org.graalvm.compiler.phases.BasePhase;
  34 import org.graalvm.compiler.phases.Phase;
  35 import org.graalvm.compiler.phases.common.UseTrappingNullChecksPhase;
  36 import org.graalvm.compiler.phases.schedule.SchedulePhase;
  37 import org.graalvm.compiler.phases.tiers.LowTierContext;
  38 import org.graalvm.compiler.phases.tiers.Suites;
  39 import org.graalvm.compiler.phases.tiers.SuitesCreator;
  40 
  41 /**
  42  * Subclass to factor out management of address lowering.
  43  */
  44 public class AddressLoweringHotSpotSuitesProvider extends HotSpotSuitesProvider {
  45 
  46     private final Phase addressLowering;
  47 
  48     public AddressLoweringHotSpotSuitesProvider(SuitesCreator defaultSuitesCreator, GraalHotSpotVMConfig config, HotSpotGraalRuntimeProvider runtime,
  49                     Phase addressLowering) {
  50         super(defaultSuitesCreator, config, runtime);
  51         this.addressLowering = addressLowering;
  52     }
  53 
  54     @Override
  55     public Suites createSuites(OptionValues options) {
  56         Suites suites = super.createSuites(options);
  57 
  58         ListIterator<BasePhase<? super LowTierContext>> findPhase = suites.getLowTier().findPhase(UseTrappingNullChecksPhase.class);
  59         if (findPhase == null) {
  60             findPhase = suites.getLowTier().findPhase(SchedulePhase.class);
  61         }
  62         findPhase.previous();
  63         findPhase.add(addressLowering);
  64 
  65         return suites;
  66     }
  67 }