[llvm] Handle #dbg_values in SROA. (PR #94070)

[Adrian Prantl via llvm-commits]

adrian-prantl wrote:

@rastogishubham Can you maybe find a benchmark where this causes a measurable regression and see where the extra time is spent?
If SROA creates more dbg_values and they take more time to process, then this is more acceptable than if SROA just got slower. Looking at the data, it's just this one benchmark being affected, so maybe there's pathological behavior it exposes that can be fixed in a more targeted way.

https://github.com/llvm/llvm-project/pull/94070