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

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