diff --git a/llvm/include/llvm/CodeGen/MachineRegisterInfo.h b/llvm/include/llvm/CodeGen/MachineRegisterInfo.h
--- a/llvm/include/llvm/CodeGen/MachineRegisterInfo.h
+++ b/llvm/include/llvm/CodeGen/MachineRegisterInfo.h
@@ -964,7 +964,7 @@
   MCRegister getLiveInPhysReg(Register VReg) const;
 
   /// getLiveInVirtReg - If PReg is a live-in physical register, return the
-  /// corresponding live-in physical register.
+  /// corresponding live-in virtual register.
   Register getLiveInVirtReg(MCRegister PReg) const;
 
   /// EmitLiveInCopies - Emit copies to initialize livein virtual registers