Index: lib/Headers/intrin.h
===================================================================
--- lib/Headers/intrin.h
+++ lib/Headers/intrin.h
@@ -1248,6 +1248,42 @@
 }
 #endif
 
+#if defined(__arm__) || defined(__aarch64__)
+static __inline__ char __DEFAULT_FN_ATTRS
+__iso_volatile_load8(const char volatile *_Src) {
+  return *_Src;
+}
+static __inline__ short __DEFAULT_FN_ATTRS
+__iso_volatile_load16(const short volatile *_Src) {
+  return *_Src;
+}
+static __inline__ int __DEFAULT_FN_ATTRS
+__iso_volatile_load32(const int volatile *_Src) {
+  return *_Src;
+}
+static __inline__ __int64 __DEFAULT_FN_ATTRS
+__iso_volatile_load64(const __int64 volatile *_Src) {
+  return *_Src;
+}
+
+static __inline__ void __DEFAULT_FN_ATTRS
+__iso_volatile_store8(char volatile *_Dest, char _Value) {
+  *_Dest = _Value;
+}
+static __inline__ void __DEFAULT_FN_ATTRS
+__iso_volatile_store16(short volatile *_Dest, short _Value) {
+  *_Dest = _Value;
+}
+static __inline__ void __DEFAULT_FN_ATTRS
+__iso_volatile_store32(int volatile *_Dest, int _Value) {
+  *_Dest = _Value;
+}
+static __inline__ void __DEFAULT_FN_ATTRS
+__iso_volatile_store64(__int64 volatile *_Dest, __int64 _Value) {
+  *_Dest = _Value;
+}
+#endif
+
 #ifdef __cplusplus
 }
 #endif