[clang] [llvm] [CUDA] Add a pseudo GPU sm_next which allows overriding for SM/PTX version. (PR #100247)

[Artem Belevich via cfe-commits]

Artem-B wrote:

OK, I've reworked the patch, and it appears to correctly propagate arbitrary SM/PTX versions from clang, down to the LLVM and generated PTX, and to ptxas and fatbinary command line options. 

PTAL.

https://github.com/llvm/llvm-project/pull/100247