llvm-project

d1e38eab - [offload] Fix enabling unittests in standalone builds (#138418)

[offload] Fix enabling unittests in standalone builds (#138418) Modify the unittest logic in offload to only look for `third-party/unittest` directory when `llvm_gtest` is not provided by LLVM itself (in-tree or installed). This makes it possible to run unittests in sparse checkouts without the `third-party/unittest` tree. While at it, also make sure `LLVM_THIRD_PARTY_DIR` is actually set while performing standalone builds. The logic is copied from `compiler-rt`. --------- Co-authored-by: Joseph Huber <huberjn@outlook.com>