[clang] [llvm] [mlir] [OpenMP] Migrate GPU Reductions CodeGen from Clang to OMPIRBuilder (PR #80343)

[Akash Banerjee via cfe-commits]

TIFitis wrote:

> There is some code that is related to Flang/MLIR that shouldn't be in the patch. e.g. ReductionInfoManager is not used anywhere. I am currently working on a patch that refactors this code a bit and how it is used in the MLIR lowering.

Thanks for pointing this out, I've removed it from this PR.



https://github.com/llvm/llvm-project/pull/80343