453       SmallVector<DAGRootSet,16> RootSets;  member
951   RootSets.append(PotentialRootSets.begin(), PotentialRootSets.end());  in findRootsBase()
959   assert(RootSets.empty() && "Unclean state!");  in findRoots()
973   if (RootSets.empty()) {  in findRoots()
977   for (auto &V : RootSets) {  in findRoots()
978     if (V.Roots.empty() || V.Roots.size() != RootSets[0].Roots.size()) {  in findRoots()
986   Scale = RootSets[0].Roots.size() + 1;  in findRoots()
1009   for (auto &DRS : RootSets) {  in collectUsedInstructions()
1016   for (auto &DRS : RootSets) {  in collectUsedInstructions()
1049   for (auto &DRS : RootSets) {  in collectUsedInstructions()
1079   for (auto &DRS : RootSets) {  in isBaseInst()
1087   for (auto &DRS : RootSets) {  in isRootInst()
1354             for (auto &DRS : RootSets) {  in validate()
1418   for (auto &DRS : RootSets) {  in replace()
1439   for (size_t i = 0, e = RootSets.size(); i != e; ++i)  in replace()
1441     replaceIV(RootSets[i], StartExprs[i], IncrExprs[i]);  in replace()