| // 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.ir.optimize.controlflow; |
| |
| import com.android.tools.r8.ir.code.IntSwitch; |
| import com.android.tools.r8.ir.code.Value; |
| |
| public class SwitchCaseAnalyzer { |
| |
| private static final SwitchCaseAnalyzer INSTANCE = new SwitchCaseAnalyzer(); |
| |
| public SwitchCaseAnalyzer() {} |
| |
| public static SwitchCaseAnalyzer getInstance() { |
| return INSTANCE; |
| } |
| |
| public boolean switchCaseIsUnreachable(IntSwitch theSwitch, int index) { |
| Value switchValue = theSwitch.value(); |
| return switchValue.hasValueRange() |
| && !switchValue.getValueRange().containsValue(theSwitch.getKey(index)); |
| } |
| } |