}
  return llvm::all_of(v.getUsers(), [&](OpOperand operand) {
    return IsQintToIntCast(operand.getOwner());
  });
}

// Check if an op operand value is defined by int -> qint TF Cast OP.
bool IsQintValueDefinedByIntToQintCast(Value v) {
  if (!IsIllegalType(v.getType())) {
    return true;
  }
  if (!v.getDefiningOp() || !llvm::isa<TF::CastOp>(v.getDefiningOp())) {
    return false;
  }