458       SmallVector<DAGRootSet,16> RootSets;  member
973   RootSets.append(PotentialRootSets.begin(), PotentialRootSets.end());  in findRootsBase()
981   assert(RootSets.empty() && "Unclean state!");  in findRoots()
995   if (RootSets.empty()) {  in findRoots()
999   for (auto &V : RootSets) {  in findRoots()
1000     if (V.Roots.empty() || V.Roots.size() != RootSets[0].Roots.size()) {  in findRoots()
1008   Scale = RootSets[0].Roots.size() + 1;  in findRoots()
1031   for (auto &DRS : RootSets) {  in collectUsedInstructions()
1038   for (auto &DRS : RootSets) {  in collectUsedInstructions()
1071   for (auto &DRS : RootSets) {  in collectUsedInstructions()
1107   for (auto &DRS : RootSets) {  in isBaseInst()
1115   for (auto &DRS : RootSets) {  in isRootInst()
1382             for (auto &DRS : RootSets) {  in validate()
1446   for (auto &DRS : RootSets) {  in replace()
1463   for (size_t i = 0, e = RootSets.size(); i != e; ++i)  in replace()
1465     replaceIV(RootSets[i], StartExprs[i], IncrExprs[i]);  in replace()