[RISCV] Use MCRegister in RISCVMCInstrAnalysis. NFC

Author: topperc

llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCTargetDesc.cpp

@@ -126,16 +126,16 @@ class RISCVMCInstrAnalysis : public MCInstrAnalysis {
   int64_t GPRState[31] = {};
   std::bitset<31> GPRValidMask;
 
-  static bool isGPR(unsigned Reg) {
+  static bool isGPR(MCRegister Reg) {
     return Reg >= RISCV::X0 && Reg <= RISCV::X31;
   }
 
-  static unsigned getRegIndex(unsigned Reg) {
+  static unsigned getRegIndex(MCRegister Reg) {
     assert(isGPR(Reg) && Reg != RISCV::X0 && "Invalid GPR reg");
     return Reg - RISCV::X1;
   }
 
-  void setGPRState(unsigned Reg, std::optional<int64_t> Value) {
+  void setGPRState(MCRegister Reg, std::optional<int64_t> Value) {
     if (Reg == RISCV::X0)
       return;
 
@@ -149,7 +149,7 @@ class RISCVMCInstrAnalysis : public MCInstrAnalysis {
     }
   }
 
-  std::optional<int64_t> getGPRState(unsigned Reg) const {
+  std::optional<int64_t> getGPRState(MCRegister Reg) const {
     if (Reg == RISCV::X0)
       return 0;
 
@@ -301,7 +301,7 @@ class RISCVMCInstrAnalysis : public MCInstrAnalysis {
   }
 
 private:
-  static bool maybeReturnAddress(unsigned Reg) {
+  static bool maybeReturnAddress(MCRegister Reg) {
     // X1 is used for normal returns, X5 for returns from outlined functions.
     return Reg == RISCV::X1 || Reg == RISCV::X5;
   }