[Bug ipa/117631] New: Not removing only set static variable with an array which is set with a constructor

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117631

            Bug ID: 117631
           Summary: Not removing only set static variable with an array
                    which is set with a constructor
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

Take:
```
struct Foo { int i; Foo() { i = 1; } };
struct A { Foo foo[2]; };
static A a;
static Foo b;
static Foo c[2];
static int d[2] = {1,1};

void foo()
{
  a.foo[0].i = 2;
  a.foo[1].i = 2;
  b.i = 2;
  c[0].i = 2;
  c[1].i = 2;
  d[0] = 2;
  d[1] = 2;
}
```

GCC currently is able to remove b and d but not a nor c.