[llvm] [NVPTX] Allow directly storing immediates to improve readability (PR #145552)

[Artem Belevich via llvm-commits]

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

Is the patch intended to cover v16/v2f16 ? It does not seem to have any effect on f16 instructions in the tests.

https://github.com/llvm/llvm-project/pull/145552