[clang] [llvm] [offload][OpenMP] Improve cross-team reduction grid selection (PR #208253)

[Dhruva Chakrabarti via cfe-commits]

dhruvachak wrote:

> This is a first, rather simple heuristic, derived from (a subset of) what AOMP does. 

I would say ROCm instead of AOMP. 



https://github.com/llvm/llvm-project/pull/208253