[llvm] [mlir] [OpenMP][MLIR][OMPIRBuilder] Add a small optional constant alloca raise function pass to finalize, utilised in convertTarget (PR #78818)

[Akash Banerjee via llvm-commits]

https://github.com/TIFitis approved this pull request.

Overall seems fine to me. However I'm not familiar about when and why this is required, so please wait for other reviewers as well.

Also, should we have a test for this in the OMPIRBuilderTest?

https://github.com/llvm/llvm-project/pull/78818