1 files changed, 10 insertions, 0 deletions
diff --git a/clang/lib/Headers/intrin.h b/clang/lib/Headers/intrin.h
index 1a33af7f295..c86f41faeb8 100644
--- a/clang/lib/Headers/intrin.h
+++ b/clang/lib/Headers/intrin.h
@@ -566,6 +566,16 @@ unsigned __int64 __getReg(int);
 long _InterlockedAdd(long volatile *Addend, long Value);
 int _ReadStatusReg(int);
 void _WriteStatusReg(int, int);
+
+static inline unsigned short _byteswap_ushort (unsigned short val) {
+  return __builtin_bswap16(val);
+}
+static inline unsigned long _byteswap_ulong (unsigned long val) {
+  return __builtin_bswap32(val);
+}
+static inline unsigned __int64 _byteswap_uint64 (unsigned __int64 val) {
+  return __builtin_bswap64(val);
+}
 #endif
 
 /*----------------------------------------------------------------------------*\