old-autovect-branch/gcc/testsuite/gcc.dg/vect/vect-noreduc.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-do compile } */
   3
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 /* From SPECs gcc benachmark, flow.c:
   8    The computation looks like a reduction, but it is used
   9    in the loop, so it cannot be vectorized.  */
  10
  11 void
  12 init_regset_vector (vector, space, nelts, bytes_per_elt)
  13      int **vector;
  14      int *space;
  15      int nelts;
  16      int bytes_per_elt;
  17 {
  18   int i;
  19   int *p = space;
  20
  21   for (i = 0; i < nelts; i++)
  22     {
  23       vector[i] = p;
  24       p += bytes_per_elt / sizeof (*p);
  25     }
  26 }
  27
  28 /* { dg-final { scan-tree-dump-times "not vectorized:" 1 "vect" } } */
  29 /* { dg-final { cleanup-tree-dump "vect" } } */
  30