diff --git a/llvm/include/llvm/ADT/STLExtras.h b/llvm/include/llvm/ADT/STLExtras.h
--- a/llvm/include/llvm/ADT/STLExtras.h
+++ b/llvm/include/llvm/ADT/STLExtras.h
@@ -17,7 +17,7 @@
 #ifndef LLVM_ADT_STLEXTRAS_H
 #define LLVM_ADT_STLEXTRAS_H
 
-#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/Hashing.h"
 #include "llvm/ADT/STLForwardCompat.h"
 #include "llvm/ADT/STLFunctionalExtras.h"
 #include "llvm/ADT/identity.h"
@@ -26,6 +26,7 @@
 #include "llvm/Config/abi-breaking.h"
 #include "llvm/Support/ErrorHandling.h"
 #include <algorithm>
+#include <array>
 #include <cassert>
 #include <cstddef>
 #include <cstdint>
@@ -832,9 +833,10 @@
   template <size_t... Ns>
   bool test(const zip_shortest<Iters...> &other,
             std::index_sequence<Ns...>) const {
-    return all_of(llvm::ArrayRef<bool>({std::get<Ns>(this->iterators) !=
-                                        std::get<Ns>(other.iterators)...}),
-                  identity<bool>{});
+    return all_of(
+        std::array<bool, sizeof...(Ns)>({std::get<Ns>(this->iterators) !=
+                                         std::get<Ns>(other.iterators)...}),
+        identity<bool>{});
   }
 
 public:
diff --git a/llvm/include/llvm/MC/SubtargetFeature.h b/llvm/include/llvm/MC/SubtargetFeature.h
--- a/llvm/include/llvm/MC/SubtargetFeature.h
+++ b/llvm/include/llvm/MC/SubtargetFeature.h
@@ -17,6 +17,7 @@
 #ifndef LLVM_MC_SUBTARGETFEATURE_H
 #define LLVM_MC_SUBTARGETFEATURE_H
 
+#include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/MathExtras.h"