diff --git a/llvm/lib/Target/RISCV/RISCVRegisterInfo.h b/llvm/lib/Target/RISCV/RISCVRegisterInfo.h
--- a/llvm/lib/Target/RISCV/RISCVRegisterInfo.h
+++ b/llvm/lib/Target/RISCV/RISCVRegisterInfo.h
@@ -70,7 +70,7 @@
   unsigned getRegisterCostTableIndex(const MachineFunction &MF) const override;
 
   bool isCCArgumentReg(MachineFunction &, MCRegister) const override {
-    llvm_unreachable("isCCArgumentReg not implmented for RISCV");
+    llvm_unreachable("isCCArgumentReg not implemented for RISCV");
     return false;
   }
 };