[CodeGen] Replace MCPhysReg with MCRegister in MachineBasicBlock::isLiveIn/removeLiveIn. NFC

We already used it for addLiveIn.

Author: topperc

llvm/include/llvm/CodeGen/MachineBasicBlock.h

@@ -478,11 +478,11 @@ class MachineBasicBlock
   Register addLiveIn(MCRegister PhysReg, const TargetRegisterClass *RC);
 
   /// Remove the specified register from the live in set.
-  void removeLiveIn(MCPhysReg Reg,
+  void removeLiveIn(MCRegister Reg,
                     LaneBitmask LaneMask = LaneBitmask::getAll());
 
   /// Return true if the specified register is in the live in set.
-  bool isLiveIn(MCPhysReg Reg,
+  bool isLiveIn(MCRegister Reg,
                 LaneBitmask LaneMask = LaneBitmask::getAll()) const;
 
   // Iteration support for live in sets.  These sets are kept in sorted

llvm/lib/CodeGen/MachineBasicBlock.cpp

@@ -595,7 +595,7 @@ void MachineBasicBlock::printAsOperand(raw_ostream &OS,
   printName(OS, 0);
 }
 
-void MachineBasicBlock::removeLiveIn(MCPhysReg Reg, LaneBitmask LaneMask) {
+void MachineBasicBlock::removeLiveIn(MCRegister Reg, LaneBitmask LaneMask) {
   LiveInVector::iterator I = find_if(
       LiveIns, [Reg](const RegisterMaskPair &LI) { return LI.PhysReg == Reg; });
   if (I == LiveIns.end())
@@ -613,7 +613,7 @@ MachineBasicBlock::removeLiveIn(MachineBasicBlock::livein_iterator I) {
   return LiveIns.erase(LI);
 }
 
-bool MachineBasicBlock::isLiveIn(MCPhysReg Reg, LaneBitmask LaneMask) const {
+bool MachineBasicBlock::isLiveIn(MCRegister Reg, LaneBitmask LaneMask) const {
   livein_iterator I = find_if(
       LiveIns, [Reg](const RegisterMaskPair &LI) { return LI.PhysReg == Reg; });
   return I != livein_end() && (I->LaneMask & LaneMask).any();