[Bug tree-optimization/89505] [9 Regression] LibreOffice miscompilation starting with r260383

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89505

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
ScXMLTableColContext::ScXMLTableColContext (struct ScXMLTableColContext * const
this, struct ScXMLImport & rImport, const struct Reference & rAttrList)
{
  # PT = null { D.1010617 } (nonlocal, escaped, restrict)
  struct ScXMLTableColContext * const this_29(D) = this;

...

  <bb 11> :
  # PT = { D.857772 D.1010617 } (nonlocal, escaped)
  # _116 = PHI <_13(9), &D.857772(10)>
  _15 = MEM[(const int &)_116 clique 1 base 0];

the _116 deref shouldn't have gotten base 0 because of

          vi = get_varinfo (find (vi->id));
          if (bitmap_intersect_p (rvars, vi->solution)
              || (escaped_p && bitmap_bit_p (vi->solution, escaped_id)))
            return false;

now I need to debug what goes wrong...