[llvm-branch-commits] [openmp] release/22.x: [openmp] Allow testing OpenMP in runtimes builds without a full clang build tree (PR #183054)

[Martin Storsjö via llvm-branch-commits]

mstorsjo wrote:

I split off the other change into its own backport PR, https://github.com/llvm/llvm-project/pull/183775, and updated this one to only be a backport of https://github.com/llvm/llvm-project/pull/182470.

https://github.com/llvm/llvm-project/pull/183054