[PATCH] CodeGen: improve ms instrincics support

[Saleem Abdulrasool]

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Comment at: lib/Headers/Intrin.h:227
@@ -226,3 +226,3 @@
 static __inline__
-long __cdecl _InterlockedExchange(long volatile *_Target, long _Value);
 static __inline__
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Warren Hunt wrote:
> I don't see why it was necessary to get rid of __cdecl.  Also, Now that the definition is gone it shouldn't be static __inline__ anymore.
Getting rid of `__cdecl` is actually quite important since this header is not x86 specific.  ARM does not honour `__cdecl`, and thus generates a warning.

Good catch about the static `__inline__`.  I've become too accustomed to the LLVM style and didnt notice that.

http://reviews.llvm.org/D4182