[clang] [Modules] Record whether VarDecl initializers contain side effects (PR #143739)

[Chuanqi Xu via cfe-commits]

ChuanqiXu9 wrote:

The direction meets my expectation. I think you already have an existing test for swift. Maybe you can try to reduce a lit test from it.

https://github.com/llvm/llvm-project/pull/143739