| // 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.DexEncodedMethod; |
| import com.android.tools.r8.graph.DexProgramClass; |
| import com.android.tools.r8.horizontalclassmerging.SingleClassPolicy; |
| |
| /** |
| * Prevent merging of classes with static initializers, as merging these causes side effects. It is |
| * okay for superclasses to have static initializers as all classes are expected to have the same |
| * super class. |
| */ |
| public class NoClassInitializerWithObservableSideEffects extends SingleClassPolicy { |
| |
| @Override |
| public boolean canMerge(DexProgramClass program) { |
| if (!program.hasClassInitializer()) { |
| return true; |
| } |
| DexEncodedMethod clinit = program.getClassInitializer(); |
| return clinit.getOptimizationInfo().classInitializerMayBePostponed() || isKotlinLambda(program); |
| } |
| |
| private boolean isKotlinLambda(DexProgramClass program) { |
| return program.getKotlinInfo().isSyntheticClass() |
| && program.getKotlinInfo().asSyntheticClass().isLambda(); |
| } |
| |
| @Override |
| public String getName() { |
| return "NoClassInitializerWithObservableSideEffects"; |
| } |
| } |