diff --git a/include/llvm/ADT/StringExtras.h b/include/llvm/ADT/StringExtras.h
index 26f11924b77..1c109be3bab 100644
--- a/include/llvm/ADT/StringExtras.h
+++ b/include/llvm/ADT/StringExtras.h
@@ -106,6 +106,13 @@ static inline std::string fromHex(StringRef Input) {
   return Output;
 }
 
+/// \brief Convert the string \p S to an integer of the specified type using
+/// the radix \p Base.  If \p Base is 0, auto-detects the radix.
+/// Returns true if the number was successfully converted, false otherwise.
+template <typename N> bool to_integer(StringRef S, N &Num, unsigned Base = 0) {
+  return !S.getAsInteger(Base, Num);
+}
+
 static inline std::string utostr(uint64_t X, bool isNeg = false) {
   char Buffer[21];
   char *BufPtr = std::end(Buffer);