gcc/testsuite/gcc.dg/builtins-47.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O -ffast-math -fdump-tree-optimized" } */
   3
   4 extern double sqrt (double);
   5 extern double pow (double, double);
   6 extern void abort (void);
   7
   8 int main ()
   9 {
  10   double x = -1.0;
  11   if (sqrt (pow (x, 2)) != 1.0)
  12     abort();
  13   if (sqrt (x*x) != 1.0)
  14     abort();
  15   return 0;
  16 }
  17
  18 /* { dg-final { scan-tree-dump-times "sqrt" 0 "optimized" } } */
  19 /* { dg-final { scan-tree-dump-times "pow" 0 "optimized" } } */