gcc/testsuite/gcc.dg/builtins-43.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fno-trapping-math -fdump-tree-gimple -fdump-tree-optimized" } */
   3
   4 extern void f(int);
   5 extern void link_error ();
   6
   7 extern float x;
   8 extern double y;
   9 extern long double z;
  10
  11 int
  12 main ()
  13 {
  14   double nan = __builtin_nan ("");
  15   float nanf = __builtin_nanf ("");
  16   long double nanl = __builtin_nanl ("");
  17
  18   if (!__builtin_isnan (nan))
  19     link_error ();
  20   if (!__builtin_isnan (nanf))
  21     link_error ();
  22   if (!__builtin_isnanf (nanf))
  23     link_error ();
  24   if (!__builtin_isnan (nanl))
  25     link_error ();
  26   if (!__builtin_isnanl (nanl))
  27     link_error ();
  28
  29   if (__builtin_isnan (4.0))
  30     link_error ();
  31   if (__builtin_isnan (4.0))
  32     link_error ();
  33   if (__builtin_isnanf (4.0))
  34     link_error ();
  35   if (__builtin_isnan (4.0))
  36     link_error ();
  37   if (__builtin_isnanl (4.0))
  38     link_error ();
  39
  40   f (__builtin_isnan (x));
  41   f (__builtin_isnan (y));
  42   f (__builtin_isnanf (y));
  43   f (__builtin_isnan (z));
  44   f (__builtin_isnanl (z));
  45 }
  46
  47
  48 /* Check that all instances of __builtin_isnan were folded.  */
  49 /* { dg-final { scan-tree-dump-times "isnan" 0 "gimple" } } */
  50 /* { dg-final { cleanup-tree-dump "gimple" } } */
  51
  52 /* Check that all instances of link_error were subject to DCE.  */
  53 /* { dg-final { scan-tree-dump-times "link_error" 0 "optimized" } } */
  54 /* { dg-final { cleanup-tree-dump "optimized" } } */