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

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fno-trapping-math -fno-finite-math-only -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 #ifndef __SPU__
  16   /* The SPU single-precision floating point format does not support NANs.  */
  17   float nanf = __builtin_nanf ("");
  18 #endif
  19   long double nanl = __builtin_nanl ("");
  20
  21   if (!__builtin_isnan (nan))
  22     link_error ();
  23 #ifndef __SPU__
  24   if (!__builtin_isnan (nanf))
  25     link_error ();
  26   if (!__builtin_isnanf (nanf))
  27     link_error ();
  28 #endif
  29   if (!__builtin_isnan (nanl))
  30     link_error ();
  31   if (!__builtin_isnanl (nanl))
  32     link_error ();
  33
  34   if (__builtin_isnan (4.0))
  35     link_error ();
  36   if (__builtin_isnan (4.0))
  37     link_error ();
  38   if (__builtin_isnanf (4.0))
  39     link_error ();
  40   if (__builtin_isnan (4.0))
  41     link_error ();
  42   if (__builtin_isnanl (4.0))
  43     link_error ();
  44
  45   f (__builtin_isnan (x));
  46   f (__builtin_isnan (y));
  47   f (__builtin_isnanf (y));
  48   f (__builtin_isnan (z));
  49   f (__builtin_isnanl (z));
  50 }
  51
  52
  53 /* Check that all instances of __builtin_isnan were folded.  */
  54 /* { dg-final { scan-tree-dump-times "isnan" 0 "gimple" } } */
  55
  56 /* Check that all instances of link_error were subject to DCE.  */
  57 /* { dg-final { scan-tree-dump-times "link_error" 0 "optimized" } } */