[llvm] [NVPTX] Add Volta Load/Store Atomics (.relaxed, .acquire, .release) and Volatile (.mmio/.volatile) support (PR #98022)

[Artem Belevich via llvm-commits]

https://github.com/Artem-B commented:

LGTM in principle, with few comments and nits.

https://github.com/llvm/llvm-project/pull/98022