[llvm] [AMDGPU][True16][CodeGen] readfirstlane for vgpr16 copy to sgpr32 (PR #137848)

[Brox Chen via llvm-commits]

broxigarchen wrote:

> I would recommend not opening a new PR for a new version of a patch. It only serves to make finding previous discussion harder, and messing up people's subscribe/unsubscribe selections. The previous PR should be updated.

as Joe suggested, close this and use the original PR

https://github.com/llvm/llvm-project/pull/137848