| // Copyright (c) 2020, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.horizontalclassmerging.policies; |
| |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.DexProgramClass; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.horizontalclassmerging.HorizontalClassMerger.Mode; |
| import com.android.tools.r8.horizontalclassmerging.SingleClassPolicy; |
| import com.android.tools.r8.ir.analysis.proto.EnumLiteProtoShrinker; |
| import com.android.tools.r8.shaking.AppInfoWithLiveness; |
| import java.util.Collections; |
| import java.util.Set; |
| |
| public class NoDeadEnumLiteMaps extends SingleClassPolicy { |
| |
| private final Set<DexType> deadEnumLiteMaps; |
| |
| public NoDeadEnumLiteMaps(AppView<AppInfoWithLiveness> appView, Mode mode) { |
| // This policy is only relevant for the initial round of class merging, since the dead enum lite |
| // maps have been removed from the application when the final round of class merging runs. |
| assert mode.isInitial(); |
| this.deadEnumLiteMaps = |
| appView.withProtoEnumShrinker( |
| EnumLiteProtoShrinker::getDeadEnumLiteMaps, Collections.emptySet()); |
| } |
| |
| @Override |
| public boolean canMerge(DexProgramClass clazz) { |
| return !deadEnumLiteMaps.contains(clazz.getType()); |
| } |
| |
| @Override |
| public String getName() { |
| return "NoDeadEnumLiteMaps"; |
| } |
| } |