[flang-commits] [flang] [Flang] Add a Fortran Standards Support doc (PR #132195)

[Kiran Chandramohan via flang-commits]

kiranchandramohan wrote:

Thanks @klausler for the info. I will add sections for Fortran 2018 and 2023.

> > > I guess we should see if we can get a list of updates from J3/WG5 for 2018 and 2023 Fortran to populate the list.
> > 
> > 
> > I am leaving this for a future patch. 2023 should be fairly straightforward. I do not have the data for Fortran 2018.
> 
> f18 has all of F'2018 except `coshape` intrinsic lowering.

Is there a specific reason you called out the `coshape` intrinsic? I see the other coarray extensions in Fortran 2018 hitting TODOs in lowering.

> 
> F'2023 support is completely absent and nobody is working on it.

A few of them seem to have support
-> Allow much longer statement lines and overall statement length
-> selected_logical_kind
-> do-concurrent reduction 

https://github.com/llvm/llvm-project/pull/132195