src/main/java/com/android/tools/r8/ir/code/MoveException.java

// Copyright (c) 2016, 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.code;

import com.android.tools.r8.dex.Constants;
import com.android.tools.r8.ir.conversion.DexBuilder;
import com.android.tools.r8.utils.InternalOptions;

public class MoveException extends Instruction {

  public MoveException(Value dest) {
    super(dest);
  }

  public Value dest() {
    return outValue;
  }

  @Override
  public void buildDex(DexBuilder builder) {
    int dest = builder.allocatedRegister(dest(), getNumber());
    builder.add(this, new com.android.tools.r8.code.MoveException(dest));
  }

  @Override
  public int maxInValueRegister() {
    assert false : "MoveException has no register arguments.";
    return 0;
  }

  @Override
  public int maxOutValueRegister() {
    return Constants.U8BIT_MAX;
  }

  @Override
  public boolean identicalNonValueParts(Instruction other) {
    assert other.isMoveException();
    return true;
  }

  @Override
  public int compareNonValueParts(Instruction other) {
    assert other.isMoveException();
    return 0;
  }

  @Override
  public boolean isMoveException() {
    return true;
  }

  @Override
  public MoveException asMoveException() {
    return this;
  }

  @Override
  public boolean canBeDeadCode(InternalOptions options) {
    return !options.debug;
  }
}