[llvm-branch-commits] [llvm] AMDGPU: Make v2f16/v2bf16 copysign legal (PR #142173)

[Matt Arsenault via llvm-branch-commits]

arsenm wrote:

> LGTM with a nit: title says it is legal, but it is custom.

The same type size is still treated as legal 

https://github.com/llvm/llvm-project/pull/142173