[llvm] [NVPTX] Constant fold NVVM add/mul/div/fma (PR #152544)

[Lewis Crawford via llvm-commits]

LewisCrawford wrote:

Thanks for reviewing this! :) I'm going to wait a few days before merging this until some downstream issues have been resolved, but will merge it here soon.

https://github.com/llvm/llvm-project/pull/152544