[Bug tree-optimization/125400] missing sinking store causes missing shrink wrapping opportunity

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125400

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Note having it as:
```
void f(int*);
void g(unsigned a, int b)
{
    int t = a;
    if (b) return;
    f(&t);
}
```

Still does not sink either. So I had originally thought it is some aliasing
issue. But maybe it is due to escaping of t.

Note LLVM does not handle this either.