gcc/testsuite/gcc.target/i386/pr44578.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -mtune=athlon64" } */
   3
   4 extern void abort (void);
   5
   6 long double
   7 __attribute__((noinline, noclone))
   8 test (float num)
   9 {
  10   unsigned int i;
  11
  12   if (num < 0.0)
  13     num = 0.0;
  14
  15   __builtin_memcpy (&i, &num, sizeof(unsigned int));
  16
  17   return (long double)(unsigned long long) i;
  18 }
  19
  20 int
  21 main ()
  22 {
  23   long double x;
  24
  25   x = test (0.0);
  26
  27   if (x != 0.0)
  28     abort ();
  29
  30   return 0;
  31 }