[llvm-branch-commits] [llvm] [ThinLTO] Generate import status in per-module combined summary (PR #88024)

[Mingming Liu via llvm-branch-commits]

minglotus-6 wrote:

https://github.com/llvm/llvm-project/pull/87600 is a functional change and the diffbase of this patch, and `llvm/test/ThinLTO/X86/import_callee_declaration.ll` should be a test case for both patches. 

In the [diffbase](https://github.com/llvm/llvm-project/pull/87600), bitcode writer takes maps as additional parameters to populate import status, and it's not straightforward to construct regression tests there without this patch.  I wonder if I shall introduce `cl::list<std::string>` in llvm-lto/llvm-lto2 (as a repeated arg) to specify `filename:GUID` to test the diffbase alone. 

https://github.com/llvm/llvm-project/pull/88024