[Bug tree-optimization/83914] [8 Regression] ice in vect_is_simple_use with -O3

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83914

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Slightly cleaned up testcase:
struct { int *a[8]; } *b;
int c, *d;
void
foo ()
{
  int f;
  for (; f; b = d, f--)
    {
      d = b + 1;
      for (c = 8; c; c--)
        b->a[c] = d;
    }
}

Need to build a few revisions in bisect seed before being able to bisect this,
but it is certainly newer than r256599.