gcc/testsuite/gcc.dg/vect/pr55857-2.c

   1 /* { dg-do compile } */
   2
   3 void foo (int *data, unsigned len, const int qlp_coeff[],
   4           unsigned order, int lp, int residual[])
   5 {
   6   int i;
   7   int sum;
   8   if(order == 2)
   9     for(i = 0; i < (int)len; i++)
  10       {
  11         sum = 0;
  12         sum += qlp_coeff[1] * data[i-2];
  13         sum += qlp_coeff[0] * data[i-1];
  14         residual[i] = data[i] - (sum >> lp);
  15       }
  16   else
  17     for(i = 0; i < (int)len; i++)
  18       residual[i] = data[i] - ((qlp_coeff[0] * data[i-1]) >> lp);
  19 }
  20