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/* { dg-do compile } */

/* { dg-options "-O1 -fno-trapping-math -fdump-tree-gimple -fdump-tree-optimized" } */

extern void f(int);

extern void link_error ();

extern float x;

extern double y;

extern long double z;

int

main ()

{

  double nan = __builtin_nan ("");

  float nanf = __builtin_nanf ("");

  long double nanl = __builtin_nanl ("");

  if (!__builtin_isnan (nan))

    link_error ();

  if (!__builtin_isnan (nanf))

    link_error ();

  if (!__builtin_isnanf (nanf))

    link_error ();

  if (!__builtin_isnan (nanl))

    link_error ();

  if (!__builtin_isnanl (nanl))

    link_error ();

  if (__builtin_isnan (4.0))

    link_error ();

  if (__builtin_isnan (4.0))

    link_error ();

  if (__builtin_isnanf (4.0))

    link_error ();

  if (__builtin_isnan (4.0))

    link_error ();

  if (__builtin_isnanl (4.0))

    link_error ();

  f (__builtin_isnan (x));

  f (__builtin_isnan (y));

  f (__builtin_isnanf (y));

  f (__builtin_isnan (z));

  f (__builtin_isnanl (z));

}

/* Check that all instances of __builtin_isnan were folded.  */

/* { dg-final { scan-tree-dump-times "isnan" 0 "gimple" } } */

/* { dg-final { cleanup-tree-dump "gimple" } } */

/* Check that all instances of link_error were subject to DCE.  */

/* { dg-final { scan-tree-dump-times "link_error" 0 "optimized" } } */

/* { dg-final { cleanup-tree-dump "optimized" } } */