[Bug tree-optimization/56265] New: [4.8 Regression] ICE in ipa_make_edge_direct_to_target

["jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56265

             Bug #: 56265
           Summary: [4.8 Regression] ICE in ipa_make_edge_direct_to_target
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jakub@gcc.gnu.org
                CC: hubicka@gcc.gnu.org


int baz ();
struct A
{
  virtual int fn2 () = 0;
  virtual int *fn3 ();
  double *fn4 ();
  int fn5 (int);
  template <class T>
  void fn1 (A &, T) { fn3 (); fn4 (); fn2 (); }
};
struct B : A
{
  int fn2 () { return 6; }
  void fn3 (int, double);
  B (bool = true);
  B (int, int);
};
template <typename T>
void
foo (B &x, A &y, A &z)
{
  y.fn2 ();
  z.fn2 ();
  int i = baz ();
  int j = (y.fn3 ())[i];
  x.fn3 (j, (y.fn4 ())[i] + (z.fn4 ())[z.fn5 (j)]);
}
inline B
operator+ (A &y, A &z)
{
  B x;
  foo<int> (x, y, z);
  return x;
}
void
bar ()
{
  B a, b, c (4, 0), d;
  a.fn1 (b, .6);
  baz ();
  c + d;
}

ICEs at -O2, starting with
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195066