[clang] [llvm] [CLANG] Add support of shared attribute for the pragma section. (PR #128197)

[Tom Honermann via llvm-commits]

https://github.com/tahonermann requested changes to this pull request.

This code looks pretty clean; simpler than I thought would be required. Yay! I think I spotted why the section is getting labeled as constant; see comments.

https://github.com/llvm/llvm-project/pull/128197