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 main()12main () 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" } } */ 58