[llvm] [mlir] [OMPIRBuilder][debug] Fix debug info for variables in target region. (PR #118314)

[Abid Qadeer via llvm-commits]

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abidh wrote:

If I try to use multiple tests containing `omp.target` in one file, I hit the "Unable to get unique ID for file" error at [this](https://github.com/llvm/llvm-project/blob/c16c0e26236d0468a2411cb3bce219d3c70650e9/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp#L3657) line. I have not investigated it further but perhaps `omp.target` lowering have introduced this limitation. @jsjodin 

https://github.com/llvm/llvm-project/pull/118314