diff --git a/llvm/include/llvm/ADT/StringRef.h b/llvm/include/llvm/ADT/StringRef.h
index 8ebd5fc346e60..2d2f0bedfe1f8 100644
--- a/llvm/include/llvm/ADT/StringRef.h
+++ b/llvm/include/llvm/ADT/StringRef.h
@@ -175,7 +175,14 @@ namespace llvm {
     /// if this string is lexicographically less than, equal to, or greater than
     /// the \p RHS.
     [[nodiscard]] int compare(StringRef RHS) const {
-      return std::string_view(*this).compare(RHS);
+      // Check the prefix for a mismatch.
+      if (int Res = compareMemory(Data, RHS.Data, std::min(Length, RHS.Length)))
+        return Res < 0 ? -1 : 1;
+
+      // Otherwise the prefixes match, so we only need to check the lengths.
+      if (Length == RHS.Length)
+        return 0;
+      return Length < RHS.Length ? -1 : 1;
     }
 
     /// Compare two strings, ignoring case.