Fix typos in comments

llvm-svn: 215777
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index 065d5d6..1263e8b 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -439,7 +439,7 @@
   // enableAtomicExpandLoadLinked - True if we need to expand our atomics.
   bool enableAtomicExpandLoadLinked() const override;
 
-  /// getInstrItins - Return the instruction itineraies based on subtarget
+  /// getInstrItins - Return the instruction itineraries based on subtarget
   /// selection.
   const InstrItineraryData *getInstrItineraryData() const {
     return &InstrItins;