gcc/testsuite/gcc.dg/torture/pr53366-2.c

   1 /* PR tree-optimization/53366 */
   2 /* { dg-do run } */
   3
   4 extern void abort (void);
   5
   6 struct T { float r[3], i[3]; };
   7 struct U { struct T j[4]; };
   8
   9 void __attribute__ ((noinline))
  10 foo (struct U *__restrict y, const float _Complex *__restrict x)
  11 {
  12   int i, j;
  13   for (j = 0; j < 4; ++j)
  14     {
  15       float a = __real__ x[j];
  16       float b = __imag__ x[j];
  17       float c = __real__ x[j + 4];
  18       float d = __imag__ x[j + 4];
  19       for (i = 0; i < 3; ++i)
  20         {
  21           y->j[j].r[i] = y->j[j].r[i] + a + c;
  22           y->j[j].i[i] = y->j[j].i[i] + b + d;
  23         }
  24     }
  25 }
  26
  27 _Complex float x[8];
  28 struct U y;
  29
  30 int
  31 main ()
  32 {
  33   int i, j;
  34   for (i = 0; i < 8; ++i)
  35     {
  36       x[i] = i + 1.0iF * (2 * i);
  37       __asm__ volatile ("");
  38     }
  39   foo (&y, x);
  40   for (j = 0; j < 4; ++j)
  41     for (i = 0; i < 3; ++i)
  42       if (y.j[j].r[i] != __real__ (x[j] + x[j + 4])
  43           || y.j[j].i[i] != __imag__ (x[j] + x[j + 4]))
  44         __builtin_abort ();
  45   return 0;
  46 }