Yep; *sigh*. ================ Comment at: include/clang/Basic/Builtins.def:165 @@ -166,1 +164,3 @@ +BUILTIN(__builtin_atanhf, "ff", "Fne") +BUILTIN(__builtin_atanhl, "LdLd", "Fneqq") BUILTIN(__builtin_cbrt , "dd", "Fnc") ---------------- qq? http://reviews.llvm.org/D3806