Depends if one is a 4 or 5 point Calvinist (some would say there is no such thing as a 4 point Calvinist, an argument for another thread!).

4 pointers would say God loved all, died for all (i.e. no limited atonement). And thus those who go to hell would be loved.
5 pointers would say God loved and died for only the elect (limited atonement). Thus those who go to hell are not loved.

A bit black and white/simplistic, but hopefully reasonably clear.