[Bug middle-end/125196] New: same values but different types initializer_list are not shared

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125196

            Bug ID: 125196
           Summary: same values but different types initializer_list are
                    not shared
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

```
#include <initializer_list>

void f1(std::initializer_list<int> il);
void f2(std::initializer_list<unsigned> il);
void t() {
    f1({3, 1, 4, 1, 3, 1, 4, 1, 3, 1, 4, 1, 3, 1, 4, 1});
    f2({3, 1, 4, 1, 3, 1, 4, 1, 3, 1, 4, 1, 3, 1, 4, 1});
}
```

Currently the constant backing the 2 initializer_list are not shared even
though we could share them.