[llvm] Add Dead Block Elimination to NVVMReflect (PR #144171)

[Yonah Goldberg via llvm-commits]

YonahGoldberg wrote:

> Is there a specific use case that you may need this feature for, that requires it to be on by default?

Not really. I agree making it a command-line option is sensible, something like --nvvm-reflect-dce.

https://github.com/llvm/llvm-project/pull/144171