gcc/testsuite/gcc.dg/vect/vect-outer-4c.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target vect_int } */
   3
   4 #define N 40
   5 #define M 128
   6 unsigned short in[N+M];
   7 unsigned short coeff[M];
   8 unsigned int out[N];
   9
  10 /* Outer-loop vectorization. */
  11
  12 void
  13 foo (){
  14   int i,j;
  15   unsigned short diff;
  16
  17   for (i = 0; i < N; i++) {
  18     diff = 0;
  19     for (j = 0; j < M; j+=8) {
  20       diff += in[j+i]*coeff[j];
  21     }
  22     out[i]=diff;
  23   }
  24 }
  25
  26 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect" { target { vect_short_mult && { ! vect_no_align } } } } } */
  27 /* { dg-final { scan-tree-dump "zero step in outer loop." "vect" } } */