Make use of the _byteswap_ushort() and _byteswap_ulong() compiler intrinsics for MSVC, when available.
FossilOrigin-Name: fe144dd73f7097a17c24c7812c2a1cc40466e6da
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 9074348..eaf433b 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -186,6 +186,16 @@
#endif
/*
+** Make sure that the compiler intrinsics we desire are enabled when
+** compiling with an appropriate version of MSVC.
+*/
+#if defined(_MSC_VER) && _MSC_VER>=1300
+# include <intrin.h>
+# pragma intrinsic(_byteswap_ushort)
+# pragma intrinsic(_byteswap_ulong)
+#endif
+
+/*
** The SQLITE_THREADSAFE macro must be defined as 0, 1, or 2.
** 0 means mutexes are permanently disable and the library is never
** threadsafe. 1 means the library is serialized which is the highest