Recognize Microsoft _[f]dpcomp, _[f]dsign, _[f]dtest math lib functions.

Signed-off-by: Vyacheslav Zakharin <vyacheslav.p.zakharin@intel.com>

Author: Vyacheslav Zakharin

clang/include/clang/Basic/Builtins.def

@@ -820,10 +820,16 @@ LIBBUILTIN(_byteswap_ushort, "UsUs",     "fnc", "stdlib.h", ALL_MS_LANGUAGES)
 LIBBUILTIN(_byteswap_ulong,  "UNiUNi",   "fnc", "stdlib.h", ALL_MS_LANGUAGES)
 LIBBUILTIN(_byteswap_uint64, "ULLiULLi", "fnc", "stdlib.h", ALL_MS_LANGUAGES)
 LANGBUILTIN(__debugbreak,     "v",   "n", ALL_MS_LANGUAGES)
+LIBBUILTIN(_dpcomp, "idd", "fnc", "math.h", ALL_MS_LANGUAGES)
+LIBBUILTIN(_dsign,  "id",  "fnc", "math.h", ALL_MS_LANGUAGES)
+LIBBUILTIN(_dtest,  "sd*", "fnc", "math.h", ALL_MS_LANGUAGES)
 LANGBUILTIN(__exception_code, "UNi", "n", ALL_MS_LANGUAGES)
 LANGBUILTIN(_exception_code,  "UNi", "n", ALL_MS_LANGUAGES)
 LANGBUILTIN(__exception_info, "v*",  "n", ALL_MS_LANGUAGES)
 LANGBUILTIN(_exception_info,  "v*",  "n", ALL_MS_LANGUAGES)
+LIBBUILTIN(_fdpcomp, "iff", "fnc", "math.h", ALL_MS_LANGUAGES)
+LIBBUILTIN(_fdsign,  "if",  "fnc", "math.h", ALL_MS_LANGUAGES)
+LIBBUILTIN(_fdtest,  "sf*", "fnc", "math.h", ALL_MS_LANGUAGES)
 LANGBUILTIN(__abnormal_termination, "i", "n", ALL_MS_LANGUAGES)
 LANGBUILTIN(_abnormal_termination,  "i", "n", ALL_MS_LANGUAGES)
 LANGBUILTIN(__GetExceptionInfo, "v*.", "ntu", ALL_MS_LANGUAGES)