You are much closer to Clang/LLVM than I am, how likely is it that these changes would get upstreamed? I see the clang.wasm ports, but really I'd like to get in-tree builds of each commit. I find clang.wasm extremely useful, but I all I have are snapshots and I don't have the skills (maybe the patience) to get main continuously building to wasm.
Hmm, I'm not a regular LLVM committer myself, but I think there's a chance.
The history here has been several ports "for fun", so no one has tried to upstream anything. But if you have a real use case that could benefit from this, we should talk with the LLVM people and see. Feel free to file an issue and cc me and we'll find the right people.