gcc/testsuite/gcc.target/i386/fabsneg-1.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target lp64 } */
   3 /* { dg-options "-O2 -mtune=nocona" } */
   4
   5 double x;
   6
   7 void
   8 __attribute__ ((noinline, noclone))
   9 test_fabs (double a)
  10 {
  11   asm volatile ("" : "+r" (a));
  12   x = __builtin_fabs (a);
  13 }
  14
  15 void
  16 __attribute__ ((noinline, noclone))
  17 test_neg (double a)
  18 {
  19   asm volatile ("" : "+r" (a));
  20   x = -a;
  21 }
  22
  23 int main ()
  24 {
  25   test_fabs (-1.0);
  26
  27   if (x != 1.0)
  28     __builtin_abort ();
  29
  30   test_neg (-1.0);
  31
  32   if (x != 1.0)
  33     __builtin_abort ();
  34
  35   return 0;
  36 }