[Openmp-commits] [openmp] [OpenMP] Address __kmp_dist_for_static_init issue (PR #129902)

[Sergio Afonso via Openmp-commits]

skatrak wrote:

@mjklemm If you look closely at the test I shared, you can see it actually contains no target regions in it. But the same issue arises if an `if` clause for `target` evaluates to false and it also evaluates to false for the `parallel` construct, e.g.:
```f90
!$omp target teams distribute parallel do if(.false.)
...
!$omp target teams if(.false.)
!$omp distribute parallel do if(.false.)
...
!$omp target teams distribute parallel do if(target:.false.) if(parallel:.false.)
...
```
Basically, this bug is triggered anytime `distribute parallel do` runs on the host and an `if` clause for the `parallel` leaf construct evaluates to false. Which I narrowed down to the `__kmpc_fork_teams` + `__kmpc_fork_call_if` + `__kmpc_dist_for_static_init_*` sequence of OpenMP runtime calls, but I don't know enough about how it works to actually dig much deeper than that.

https://github.com/llvm/llvm-project/pull/129902