gcc/testsuite/gcc.dg/vect/pr102318.c

   1 /* { dg-do compile } */
   2
   3 void
   4 vec_slp_int16_t (short int *restrict a, short int *restrict b, int n)
   5 {
   6   short int x0 = b[0];
   7   short int x1 = b[1];
   8   short int x2 = b[2];
   9   short int x3 = b[3];
  10   for (int i = 0; i < n; ++i)
  11   {
  12     x0 += a[i * 4];
  13     x1 += a[i * 4 + 1];
  14     x2 += a[i * 4 + 2];
  15     x3 += a[i * 4 + 3];
  16   }
  17   b[0] = x0;
  18   b[1] = x1;
  19   b[2] = x2;
  20   b[3] = x3;
  21 }