[flang-commits] [flang] [mlir] [mlir][debuginfo] Add support for subprogram annotations (PR #110946)

[Christian Ulmann via flang-commits]

Dinistro wrote:

> @Dinistro , I've added one more test but I'm kind of unable to implement an import test because llvm doesn't have actual C++ entities for `DW_TAG_LLVM_annotation`. All usages of annotations are done at a very low level and thus writing such tests is unfeasible (i.e. it's not possible to write `llvm.di_annotation`). Would it be okay to land this patch as it is without the import test? I'm afraid that building the proper annotation infrastructure in LLVM would be a much larger project and that is kind of falling out of my limited timelines.

I'm not too familiar with this in LLVM IR. So this can not even be written in textual IR?

https://github.com/llvm/llvm-project/pull/110946