[PATCH] include: Don't use the MSVC intrinsic _InterlockedCompareExchange128 on clang in MSVC mode

[Martin Storsjo]

Clang doesn't consider the currently declared function as the proper
intrinsic function (a few parameters differ vaguely), and even if
declared properly, clang requires building for a target with the cx16
flag enabled to be able to use that intrinsic.

Instead just use the inline assembly or GCC builtin version instead.

This fixes building in PE mode with Clang in MSVC mode for both x86_64
and aarch64.

Signed-off-by: Martin Storsjo <martin at martin.st>
---
 include/winnt.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/winnt.h b/include/winnt.h
index 04353d9405d..9d797a85099 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -6894,7 +6894,7 @@ static inline BOOLEAN BitScanReverse(DWORD *index, DWORD mask)
 
 #ifdef _WIN64
 
-#if defined(_MSC_VER)
+#if defined(_MSC_VER) && !defined(__clang__)
 
 #define InterlockedCompareExchange128 _InterlockedCompareExchange128
 static inline unsigned char _InterlockedCompareExchange128(__int64 *dest, __int64 xchg_high, __int64 xchg_low, __int64 *compare);
@@ -6913,7 +6913,7 @@ static inline unsigned char InterlockedCompareExchange128(__int64 *dest, __int64
     return ret;
 }
 
-#elif defined(__GNUC__)
+#elif defined(__GNUC__) || defined(__clang__)
 
 static inline unsigned char InterlockedCompareExchange128(__int64 *dest, __int64 xchg_high, __int64 xchg_low, __int64 *compare)
 {
-- 
2.17.1