| // 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.DexProgramClass; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.horizontalclassmerging.MultiClassPolicy; |
| import java.util.Collection; |
| import java.util.IdentityHashMap; |
| import java.util.LinkedList; |
| import java.util.Map; |
| |
| public class SameParentClass extends MultiClassPolicy { |
| |
| @Override |
| public Collection<Collection<DexProgramClass>> apply(Collection<DexProgramClass> group) { |
| Map<DexType, Collection<DexProgramClass>> groups = new IdentityHashMap<>(); |
| for (DexProgramClass clazz : group) { |
| groups |
| .computeIfAbsent(clazz.superType, ignore -> new LinkedList<DexProgramClass>()) |
| .add(clazz); |
| } |
| removeTrivialGroups(groups.values()); |
| return groups.values(); |
| } |
| } |