[Openmp-commits] [openmp] [OpenMP] Make `omp.h` work when compiled with `-ffreestanding` (PR #125618)

[Joseph Huber via Openmp-commits]

jhuber6 wrote:

> If it is not used, I wouldn't have a problem removing it enterely either. gcc's `omp.h` doesn't include it either (it has zero `#include`s)

Figured this was less destructive since removing it does make some tests fail, so it's not unheard of that users could be implicitly relying on it as well.

https://github.com/llvm/llvm-project/pull/125618