gcc/testsuite/gcc.dg/vect/pr96854.c

   1 /* { dg-additional-options "-ffast-math" } */
   2
   3 double _Complex __attribute__((noipa))
   4 foo (double _Complex acc, const double _Complex *x, const double _Complex* y, int N)
   5 {
   6   for (int c = 0; c < N; ++c)
   7     acc -= x[c] * y[c];
   8   return acc;
   9 }
  10
  11 int
  12 main()
  13 {
  14   static const double _Complex y[] = { 1, 2, };
  15   static const double _Complex x[] = { 1, 3, };
  16   double _Complex ref = foo (0, x, y, 2);
  17   if (__builtin_creal (ref) != -7.)
  18     __builtin_abort ();
  19   return 0;
  20 }