[Bug ipa/89567] [missed-optimization] Should not be initializing unused struct parameter members

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89567

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
For the non-static case, IPA-SRA has:
```
Summary for node int foo2(two_ints)/0:
  Returns value
  Descriptor for parameter 0:
    param_size_limit: 8, size_reached: 4
    * Access to unit offset: 0, unit size: 4, type: int, alias_ptr_type: int *,
certain


...
Function int foo2(two_ints)/0 disqualified because it cannot be made local.
```