[Openmp-commits] [openmp] [openmp][AIX]Initial changes for porting to AIX (PR #76841)

[Shilei Tian via Openmp-commits]

https://github.com/shiltian approved this pull request.

The patch generally looks good to me. We can improve things as we go.

https://github.com/llvm/llvm-project/pull/76841