82     RegisterSet(const RegisterSet &RS) = default;
189       : RS(S), TRI(RI) {}  in PrintRegSet()
195     const RegisterSet &RS;  member
203     for (unsigned R = P.RS.find_first(); R; R = P.RS.find_next(R))  in operator <<()
257         const BitTracker::RegisterRef &RS, MachineRegisterInfo &MRI);
957       const BitTracker::RegisterRef &RS, MachineRegisterInfo &MRI) {  in isTransparentCopy()  argument
958   if (!RD.Reg.isVirtual() || !RS.Reg.isVirtual())  in isTransparentCopy()
965   return DRC == getFinalVRegClass(RS, MRI);  in isTransparentCopy()
1095     bool usedBitsEqual(BitTracker::RegisterRef RD, BitTracker::RegisterRef RS);
1307       BitTracker::RegisterRef RS) {  in usedBitsEqual()  argument
1309   const BitTracker::RegisterCell &SC = BT.lookup(RS.Reg);  in usedBitsEqual()
1315   if (!HBS::getSubregMask(RS, SB, SW, MRI))  in usedBitsEqual()
1357       BitTracker::RegisterRef RS = Op;  in processBlock()  local
1358       if (!BT.has(RS.Reg))  in processBlock()
1360       if (!HBS::isTransparentCopy(RD, RS, MRI))  in processBlock()
1364       if (!HBS::getSubregMask(RS, BN, BW, MRI))  in processBlock()
1367       const BitTracker::RegisterCell &SC = BT.lookup(RS.Reg);  in processBlock()
1368       if (!usedBitsEqual(RD, RS) && !HBS::isEqual(DC, 0, SC, BN, BW))  in processBlock()
1377             .addReg(RS.Reg, 0, RS.Sub);  in processBlock()
1709       BitTracker::RegisterRef RS = MI.getOperand(1);  in propagateRegCopy()  local
1710       if (!HBS::isTransparentCopy(RD, RS, MRI))  in propagateRegCopy()
1712       if (RS.Sub != 0)  in propagateRegCopy()
1713         Changed = HBS::replaceRegWithSub(RD.Reg, RS.Reg, RS.Sub, MRI);  in propagateRegCopy()
1715         Changed = HBS::replaceReg(RD.Reg, RS.Reg, MRI);  in propagateRegCopy()
1744       BitTracker::RegisterRef RS = MI.getOperand(SrcX);  in propagateRegCopy()  local
1745       Changed = HBS::replaceSubWithSub(RD.Reg, Sub, RS.Reg, RS.Sub, MRI);  in propagateRegCopy()
1955   BitTracker::RegisterRef RS = ValOp;  in genStoreUpperHalf()  local
1956   if (!BT.has(RS.Reg))  in genStoreUpperHalf()
1958   const BitTracker::RegisterCell &RC = BT.lookup(RS.Reg);  in genStoreUpperHalf()
1960   unsigned B = (RS.Sub == Hexagon::isub_hi) ? 32 : 0;  in genStoreUpperHalf()
2001   BitTracker::RegisterRef RS = MI->getOperand(2);  in genStoreImmediate()  local
2002   if (!BT.has(RS.Reg))  in genStoreImmediate()
2004   const BitTracker::RegisterCell &RC = BT.lookup(RS.Reg);  in genStoreImmediate()
2179     BitTracker::RegisterRef RS = Op;  in genExtractLow()  local
2180     if (!BT.has(RS.Reg))  in genExtractLow()
2182     const BitTracker::RegisterCell &SC = BT.lookup(RS.Reg);  in genExtractLow()
2184     if (!HBS::getSubregMask(RS, BN, BW, MRI))  in genExtractLow()
2188     if (!validateReg(RS, NewOpc, 1))  in genExtractLow()
2195                   .addReg(RS.Reg, 0, RS.Sub);  in genExtractLow()
2367   BitTracker::RegisterRef RS = MI->getOperand(1);  in simplifyTstbit()  local
2370   if (!BT.has(RS.Reg) || !HBS::getSubregMask(RS, F, W, MRI))  in simplifyTstbit()
2376   const BitTracker::RegisterCell &SC = BT.lookup(RS.Reg);  in simplifyTstbit()
2378   if (V.Type == BitTracker::BitValue::Ref && V.RefI.Reg != RS.Reg) {  in simplifyTstbit()