[Bug tree-optimization/57705] New: Non-constant step induction vars not vectorized

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57705

            Bug ID: 57705
           Summary: Non-constant step induction vars not vectorized
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: jakub at gcc dot gnu.org
          Reporter: jakub at gcc dot gnu.org

int a[1024] __attribute__ ((aligned (32)));
void
bar (int k, int m)
{
  int i, k2 = k;
  for (i = 0; i < 1024; i++)
    {
      a[i] = k2;
      k2 += m + 1;
    }
}

isn't vectorized, although it seems fairly easy to handle these.