diff --git a/racket/collects/compiler/private/xform.rkt b/racket/collects/compiler/private/xform.rkt
index b640581d90..10d1e1086a 100644
--- a/racket/collects/compiler/private/xform.rkt
+++ b/racket/collects/compiler/private/xform.rkt
@@ -903,7 +903,8 @@
 	       _isnan __isfinited __isnanl __isnan __signbit
                __isinff __isinfl isnanf isinff __isinfd __isnanf __isnand __isinf
                __inline_isnanl __inline_isnan __inline_signbitf __inline_signbitd __inline_signbitl
-               __builtin_popcount __builtin_clz
+               __builtin_popcount __builtin_clz __builtin_isnan __builtin_isinf __builtin_signbit
+               __builtin_signbitf __builtin_signbitl __builtin_isinf_sign
                _Generic
                __inline_isinff __inline_isinfl __inline_isinfd __inline_isnanf __inline_isnand __inline_isinf
                floor floorl ceil ceill round roundl fmod fmodl modf modfl fabs fabsl __maskrune _errno __errno