138       SlotIndex SI;    ///< Slot where this PHI occurs.
153     using DbgValueLoc = std::pair<SlotIndex, MachineInstr*>;
318     void addUndefFlag(const LiveInterval &Int, SlotIndex UseIdx,
624   SlotIndex CopyIdx = LIS->getInstructionIndex(*CopyMI).getRegSlot();  in adjustCopiesBackFrom()
652   SlotIndex CopyUseIdx = CopyIdx.getRegSlot(true);  in adjustCopiesBackFrom()
685   SlotIndex FillerStart = ValS->end, FillerEnd = BS->start;  in adjustCopiesBackFrom()
705     if (SS != S.end() && SlotIndex::isSameInstr(SS->start, SS->end)) {  in adjustCopiesBackFrom()
711       SlotIndex BBStart =  in adjustCopiesBackFrom()
836   SlotIndex CopyIdx = LIS->getInstructionIndex(*CopyMI).getRegSlot();  in removeCopyByCommutingDef()
886     SlotIndex UseIdx = LIS->getInstructionIndex(*UseMI);  in removeCopyByCommutingDef()
936     SlotIndex UseIdx = LIS->getInstructionIndex(*UseMI).getRegSlot(true);  in removeCopyByCommutingDef()
957     SlotIndex DefIdx = UseIdx.getRegSlot();  in removeCopyByCommutingDef()
988     SlotIndex AIdx = CopyIdx.getRegSlot(true);  in removeCopyByCommutingDef()
1109   SlotIndex CopyIdx = LIS->getInstructionIndex(CopyMI).getRegSlot(true);  in removePartialRedundancy()
1179       SlotIndex InsPosIdx = LIS->getInstructionIndex(*InsPos).getRegSlot(true);  in removePartialRedundancy()
1191     SlotIndex NewCopyIdx =  in removePartialRedundancy()
1216   SmallVector<SlotIndex, 8> EndPoints;  in removePartialRedundancy()
1228       SlotIndex UseIdx = LIS->getInstructionIndex(MI);  in removePartialRedundancy()
1251       if (SlotIndex::isSameInstr(EndPoints[I], CopyIdx)) {  in removePartialRedundancy()
1258     SmallVector<SlotIndex, 8> Undefs;  in removePartialRedundancy()
1299   SlotIndex CopyIdx = LIS->getInstructionIndex(*CopyMI);  in reMaterializeTrivialDef()
1519       SlotIndex CurrIdx = LIS->getInstructionIndex(NewMI);  in reMaterializeTrivialDef()
1520       SlotIndex DefIndex =  in reMaterializeTrivialDef()
1545       SlotIndex CurrIdx = LIS->getInstructionIndex(NewMI);  in reMaterializeTrivialDef()
1548       SlotIndex DefIndex =  in reMaterializeTrivialDef()
1609     SlotIndex NewMIIdx = LIS->getInstructionIndex(NewMI);  in reMaterializeTrivialDef()
1621   SlotIndex NewMIIdx = LIS->getInstructionIndex(NewMI);  in reMaterializeTrivialDef()
1686   SlotIndex Idx = LIS->getInstructionIndex(*CopyMI);  in eliminateUndefCopy()
1703   SlotIndex RegIndex = Idx.getRegSlot();  in eliminateUndefCopy()
1744       assert(SVNI != nullptr && SlotIndex::isSameInstr(SVNI->def, RegIndex));  in eliminateUndefCopy()
1756     SlotIndex UseIdx = LIS->getInstructionIndex(MI);  in eliminateUndefCopy()
1790 void RegisterCoalescer::addUndefFlag(const LiveInterval &Int, SlotIndex UseIdx,  in addUndefFlag()
1829       SlotIndex UseIdx = LIS->getInstructionIndex(MI).getRegSlot(true);  in updateRegDefsUses()
1884           SlotIndex MIIdx = UseMI->isDebugInstr()  in updateRegDefsUses()
1887           SlotIndex UseIdx = MIIdx.getRegSlot(true);  in updateRegDefsUses()
1928     SlotIndex PredEnd = LIS->getMBBEndIdx(Pred);  in copyValueUndefInPredecessors()
1950     SlotIndex Pos = LIS->getInstructionIndex(*MO.getParent());  in setUndefOnPrunedSubRegUses()
2023     const SlotIndex CopyIdx = LIS->getInstructionIndex(*CopyMI);  in joinCopy()
2296     SlotIndex CopyRegIdx = LIS->getInstructionIndex(*CopyMI).getRegSlot();  in joinReservedPhysReg()
2297     SlotIndex DestRegIdx = LIS->getInstructionIndex(DestMI).getRegSlot();  in joinReservedPhysReg()
2304       for (SlotIndex SI = Indexes->getNextNonNullIndex(DestRegIdx);  in joinReservedPhysReg()
2574               SmallVectorImpl<std::pair<SlotIndex, LaneBitmask>> &TaintExtent);
2610   void pruneValues(JoinVals &Other, SmallVectorImpl<SlotIndex> &EndPoints,
2668     SlotIndex Def = VNI->def;  in followCopyChain()
2817     assert(SlotIndex::isSameInstr(VNI->def, OtherVNI->def) && "Broken LRQ");  in analyzeValue()
2854   assert(!SlotIndex::isSameInstr(VNI->def, V.OtherVNI->def) && "Broken LRQ");  in analyzeValue()
3072             SmallVectorImpl<std::pair<SlotIndex, LaneBitmask>> &TaintExtent) {  in taintExtent()  argument
3075   SlotIndex MBBEnd = Indexes->getMBBEndIdx(MBB);  in taintExtent()
3083     SlotIndex End = OtherI->end;  in taintExtent()
3147     SmallVector<std::pair<SlotIndex, LaneBitmask>, 8> TaintExtent;  in resolveConflicts()
3164     assert(!SlotIndex::isSameInstr(VNI->def, TaintExtent.front().first) &&  in resolveConflicts()
3210                            SmallVectorImpl<SlotIndex> &EndPoints,  in pruneValues()
3213     SlotIndex Def = LR.getValNumInfo(i)->def;  in pruneValues()
3327     SlotIndex Def = LR.getValNumInfo(i)->def;  in pruneSubRegValues()
3328     SlotIndex OtherDef;  in pruneSubRegValues()
3346         SmallVector<SlotIndex,8> EndPoints;  in pruneSubRegValues()
3385 static bool isDefInSubRange(LiveInterval &LI, SlotIndex Def) {  in isDefInSubRange()
3426     SlotIndex Def = VNI->def;  in eraseInstrs()
3443       SlotIndex NewEnd;  in eraseInstrs()
3463         SlotIndex ED, LE;  in eraseInstrs()
3544   SmallVector<SlotIndex, 8> EndPoints;  in joinSubRegRanges()
3689   SmallVector<SlotIndex, 8> EndPoints;  in joinVirtRegs()
3712       const SlotIndex &SI = PHIIt->second.SI;  in joinVirtRegs()
3800   auto CloseNewDVRange = [this, &ToInsert](SlotIndex Slot) {  in buildVRegToDbgValueMap()
3815     SlotIndex CurrentSlot = Slots.getMBBStartIdx(&MBB);  in buildVRegToDbgValueMap()
3870   SlotIndex LastUndefIdx;  in checkMergingChangesDbgValuesImpl()
3875                       &LastUndefIdx](SlotIndex Idx) -> bool {  in checkMergingChangesDbgValuesImpl()
4231     SlotIndex SI = Slots->getMBBStartIdx(MBB);  in runOnMachineFunction()