Index: gcc.target/i386/conversion.c
===================================================================
--- gcc.target/i386/conversion.c	(revision 0)
+++ gcc.target/i386/conversion.c	(revision 0)
@@ -0,0 +1,54 @@
+/* Check that conversion functions don't leak into global namespace.  */
+
+/* { dg-do link } */
+/* { dg-options "-ffast-math" }  */
+
+int ifloor (double a) { return __builtin_ifloor (a); }
+#ifdef HAVE_C99_RUNTIME
+int ifloorf (float a) { return __builtin_ifloorf (a); }
+int ifloorl (long double a) { return __builtin_ifloorl (a); }
+#endif
+
+long lfloor (double a) { return __builtin_lfloor (a); }
+#ifdef HAVE_C99_RUNTIME
+long lfloorf (float a) { return __builtin_lfloorf (a); }
+long lfloorl (long double a) { return __builtin_lfloorl (a); }
+#endif
+
+long long llfloor (double a) { return __builtin_llfloor (a); }
+#ifdef HAVE_C99_RUNTIME
+long long llfloorf (float a) { return __builtin_llfloorf (a); }
+long long llfloorl (long double a) { return __builtin_llfloorl (a); }
+#endif
+
+int iceil (double a) { return __builtin_iceil (a); }
+#ifdef HAVE_C99_RUNTIME
+int iceilf (float a) { return __builtin_iceilf (a); }
+int iceill (long double a) { return __builtin_iceill (a); }
+#endif
+
+long lceil (double a) { return __builtin_lceil (a); }
+#ifdef HAVE_C99_RUNTIME
+long lceilf (float a) { return __builtin_lceilf (a); }
+long lceill (long double a) { return __builtin_lceill (a); }
+#endif
+
+long long llceil (double a) { return __builtin_llceil (a); }
+#ifdef HAVE_C99_RUNTIME
+long long llceilf (float a) { return __builtin_llceilf (a); }
+long long llceill (long double a) { return __builtin_llceill (a); }
+#endif
+
+int iround (double a) { return __builtin_iround (a); }
+#ifdef HAVE_C99_RUNTIME
+int iroundf (float a) { return __builtin_iroundf (a); }
+int iroundl (long double a) { return __builtin_iroundl (a); }
+#endif
+
+int irint (double a) { return __builtin_irint (a); }
+#ifdef HAVE_C99_RUNTIME
+int irintf (float a) { return __builtin_irintf (a); }
+int irintl (long double a) { return __builtin_irintl (a); }
+#endif
+
+int main () { return 0; }
Index: gcc.dg/builtins-67.c
===================================================================
--- gcc.dg/builtins-67.c	(revision 0)
+++ gcc.dg/builtins-67.c	(revision 0)
@@ -0,0 +1,71 @@
+/* Check that conversion functions link correctly with -ffast-math.  */
+
+/* { dg-do link } */
+/* { dg-options "-ffast-math -lm" }  */
+
+
+double floor (double);
+float floorf (float);
+long double floorl (long double);
+
+double ceil (double);
+float ceilf (float);
+long double ceill (long double);
+
+double round (double);
+float roundf (float);
+long double roundl (long double);
+
+double rint (double);
+float rintf (float);
+long double rintl (long double);
+
+int ifloor (double a) { return (int) floor (a); }
+#ifdef HAVE_C99_RUNTIME
+int ifloorf (float a) { return (int) floorf (a); }
+int ifloorl (long double a) { return (int) floorl (a); }
+#endif
+
+long lfloor (double a) { return (long) floor (a); }
+#ifdef HAVE_C99_RUNTIME
+long lfloorf (float a) { return (long) floorf (a); }
+long lfloorl (long double a) { return (long) floorl (a); }
+#endif
+
+long long llfloor (double a) { return (long long) floor (a); }
+#ifdef HAVE_C99_RUNTIME
+long long llfloorf (float a) { return (long long) floorf (a); }
+long long llfloorl (long double a) { return (long long) floorl (a); }
+#endif
+
+int iceil (double a) { return (int) ceil (a); }
+#ifdef HAVE_C99_RUNTIME
+int iceilf (float a) { return (int) ceilf (a); }
+int iceill (long double a) { return (int) ceill (a); }
+#endif
+
+long lceil (double a) { return (long) ceil (a); }
+#ifdef HAVE_C99_RUNTIME
+long lceilf (float a) { return (long) ceilf (a); }
+long lceill (long double a) { return (long) ceill (a); }
+#endif
+
+long long llceil (double a) { return (long long) ceil (a); }
+#ifdef HAVE_C99_RUNTIME
+long long llceilf (float a) { return (long long) ceilf (a); }
+long long llceill (long double a) { return (long long) ceill (a); }
+#endif
+
+int iround (double a) { return (int) round (a); }
+#ifdef HAVE_C99_RUNTIME
+int iroundf (float a) { return (int) roundf (a); }
+int iroundl (long double a) { return (int) roundl (a); }
+#endif
+
+int irint (double a) { return (int) rint (a); }
+#ifdef HAVE_C99_RUNTIME
+int irintf (float a) { return (int) rintf (a); }
+int irintl (long double a) { return (int) rintl (a); }
+#endif
+
+int main () { return 0; }