Who can help with LLVM issue for Windows (X86_64)

On the occasion of the release of the wonderful Swift 5.7 version I would like to ask if anyone could help with this LLVM "gap" (there is also an according Swift bug entry) to make async/await work reliably on Windows (X86_64)? Maybe some compiler people at Apple (CC: @hborla, @tkremenek)? Thanks. (Unfortunately I cannot help as I lack the skills.)