[llvm] [AMDGPU] Support i16 element types for tbuffer D16 load/store (PR #201420)

[Jay Foad via llvm-commits]

https://github.com/jayfoad commented:

Patch seems like the right kind of idea, but I am confused by some of the inconsistences -- see inline comments.

https://github.com/llvm/llvm-project/pull/201420