[Bug tree-optimization/70700] ICE using -fdump-tree-all-graph option

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70700

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
struct S
{
  long m;
};

struct S
fn1 (struct S *a)
{
  if (a->m)
    a->m |= 2;
  return *a;
}