718                                     SparseSet<LiveRegUnit> &RegUnits,  in updatePhysDepsDownwards()  argument
739       SparseSet<LiveRegUnit>::iterator I = RegUnits.find(Unit);  in updatePhysDepsDownwards()
740       if (I == RegUnits.end())  in updatePhysDepsDownwards()
751       RegUnits.erase(Unit);  in updatePhysDepsDownwards()
757       LiveRegUnit &LRU = RegUnits[Unit];  in updatePhysDepsDownwards()
796             SparseSet<LiveRegUnit> &RegUnits) {  in updateDepth()  argument
802     updatePhysDepsDownwards(&UseMI, Deps, RegUnits, MTM.TRI);  in updateDepth()
835             SparseSet<LiveRegUnit> &RegUnits) {  in updateDepth()  argument
836   updateDepth(BlockInfo[MBB->getNumber()], UseMI, RegUnits);  in updateDepth()
842              SparseSet<LiveRegUnit> &RegUnits) {  in updateDepths()  argument
844       updateDepth(Start->getParent(), *Start, RegUnits);  in updateDepths()
868   SparseSet<LiveRegUnit> RegUnits;  in computeInstrDepths()  local
869   RegUnits.setUniverse(MTM.TRI->getNumRegUnits());  in computeInstrDepths()
897       updateDepth(TBI, UseMI, RegUnits);  in computeInstrDepths()
906                                       SparseSet<LiveRegUnit> &RegUnits,  in updatePhysDepsUpwards()  argument
925       SparseSet<LiveRegUnit>::iterator I = RegUnits.find(Unit);  in updatePhysDepsUpwards()
926       if (I == RegUnits.end())  in updatePhysDepsUpwards()
937       RegUnits.erase(I);  in updatePhysDepsUpwards()
945       LiveRegUnit &LRU = RegUnits[Unit];  in updatePhysDepsUpwards()
1029   SparseSet<LiveRegUnit> RegUnits;  in computeInstrHeights()  local
1030   RegUnits.setUniverse(MTM.TRI->getNumRegUnits());  in computeInstrHeights()
1046         RegUnits[LI.Reg].Cycle = LI.Height;  in computeInstrHeights()
1118         Cycle = updatePhysDepsUpwards(MI, Cycle, RegUnits, MTM.SchedModel,  in computeInstrHeights()
1147     for (const LiveRegUnit &RU : RegUnits) {  in computeInstrHeights()