[flang-commits] [flang] [flang] Enumeration Type PR02 - Addition of parse tree nodes following F2023 spec definition. (PR #191519)

[via flang-commits]

kwyatt-ext wrote:

### Test Artifacts -

**make check-flang -j7**:

```
Testing Time: 6.85s

Total Discovered Tests: 4293
  Unsupported      :   82 (1.91%)
  Passed           : 4200 (97.83%)
  Expectedly Failed:   11 (0.26%)


FLANG Container Test completed 1 minutes (63 s).

Total Time: 1 minutes (63 s)
Completed : Fri Apr 10 03:31:42 PM CDT 2026
```

**make check-flang-rt -j7**:

```
Testing Time: 0.79s

Total Discovered Tests: 279
  Passed: 279 (100.00%)


FLANG Container Test completed 0 minutes (12 s).

Total Time: 0 minutes (12 s)
Completed : Fri Apr 10 03:33:27 PM CDT 2026
```

**./bin/llvm-lit -j10 ../flang/test**:

```
Testing Time: 198.03s

Total Discovered Tests: 6930
  Passed: 6930 (100.00%)


LLVM Test Suite Container Test completed in 3 minutes (203 s).

Total Time: 3 minutes (203 s)
Completed : Fri Apr 10 03:43:46 PM CDT 2026

```

**Ad hoc**:

```
wyattke:~/builds/flang_work/d_type_02> cat ./test/enum_color.f90
subroutine color_test()
  enumeration type :: color
    enumerator :: red, green, blue
  end enumeration type

  type(color) :: c
  c = red
end subroutine

wyattke:~/builds/flang_work/d_type_02> ./build/bin/flang-new -c ./test/enum_color.f90
error: Semantic errors in ./test/enum_color.f90
././test/enum_color.f90:2:3: error: F2023 ENUMERATION TYPEs are not yet implemented
    enumeration type :: color
    ^^^^^^^^^^^^^^^^^^^^^^^^^
././test/enum_color.f90:6:8: error: Derived type 'color' not found
    type(color) :: c
         ^^^^^
```


https://github.com/llvm/llvm-project/pull/191519