[Bug c/92205] ice in vect_get_vec_def_for_stmt_copy, at tree-vect-stmts.c:1688

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92205

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Reduced code is

unsigned char *a;
b() {
  long c;
  int d = 0;
  for (; c; ++c)
    d |= a[c];
  return d;
}