[llvm] [SPIR-V] Emit DebugTypePointer from NonSemantic DI (PR #109287)

[Vyacheslav Levytskyy via llvm-commits]

VyacheslavLevytskyy wrote:

We have all implementation within just one long SPIRVEmitNonSemanticDI::emitGlobalDI(), and it becomes hard to trace all changes and the logic overall, so probably it makes sense to refactor it, breaking into smaller functions, structuring the code?

https://github.com/llvm/llvm-project/pull/109287