+ // We can pick any of the set names for the merged set. Go for the
+ // shortest one to avoid picking the name of one of the classes that are
+ // artificially created by tablegen. So "FPR128_lo" instead of
+ // "QQQQ_with_qsub3_in_FPR128_lo".
+ if (RegUnitSets[SubIdx].Name.size() < RegUnitSets[SuperIdx].Name.size())
+ RegUnitSets[SuperIdx].Name = RegUnitSets[SubIdx].Name;