| // Copyright (c) 2019, 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.ir.optimize.info; |
| |
| import com.android.tools.r8.ir.analysis.type.DynamicType; |
| import com.android.tools.r8.ir.analysis.value.AbstractValue; |
| import com.android.tools.r8.ir.analysis.value.UnknownValue; |
| |
| public class DefaultFieldOptimizationInfo extends FieldOptimizationInfo { |
| |
| private static final DefaultFieldOptimizationInfo INSTANCE = new DefaultFieldOptimizationInfo(); |
| |
| protected DefaultFieldOptimizationInfo() {} |
| |
| public static DefaultFieldOptimizationInfo getInstance() { |
| return INSTANCE; |
| } |
| |
| @Override |
| public boolean cannotBeKept() { |
| return false; |
| } |
| |
| @Override |
| public AbstractValue getAbstractValue() { |
| return UnknownValue.getInstance(); |
| } |
| |
| @Override |
| public int getReadBits() { |
| return BitAccessInfo.getNoBitsReadValue(); |
| } |
| |
| @Override |
| public DynamicType getDynamicType() { |
| return DynamicType.unknown(); |
| } |
| |
| @Override |
| public boolean isDead() { |
| return false; |
| } |
| |
| @Override |
| public boolean valueHasBeenPropagated() { |
| return false; |
| } |
| |
| @Override |
| public MutableFieldOptimizationInfo toMutableOptimizationInfo() { |
| return new MutableFieldOptimizationInfo(); |
| } |
| } |