| // Copyright (c) 2024, 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.optimize.argumentpropagation.codescanner; |
| |
| import com.android.tools.r8.errors.Unreachable; |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.shaking.AppInfoWithLiveness; |
| |
| public class IdentityAbstractFunction implements AbstractFunction { |
| |
| private static final IdentityAbstractFunction INSTANCE = new IdentityAbstractFunction(); |
| |
| private IdentityAbstractFunction() {} |
| |
| static IdentityAbstractFunction get() { |
| return INSTANCE; |
| } |
| |
| @Override |
| public ValueState apply( |
| AppView<AppInfoWithLiveness> appView, |
| FlowGraphStateProvider flowGraphStateProvider, |
| ConcreteValueState inState) { |
| return inState; |
| } |
| |
| @Override |
| public boolean containsBaseInFlow(BaseInFlow inFlow) { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public Iterable<BaseInFlow> getBaseInFlow() { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public boolean isIdentity() { |
| return true; |
| } |
| } |