public override void SubstituteDef(IRVariable variable, IRExpression expression)
{
if (expression is IRVariable)
{
if (ReferenceEquals(Destination, variable))
{
Destination = expression.CloneComplete();
}
else
{
Destination.Substitute(variable, expression);
}
Defs.Clear();
Defs.UnionWith(Destination.GetAllVariables());
}
}