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

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