[llvm] [AMDGPU] Always emit SI_KILL_I1_PSEUDO for uniform floating point branches. (PR #124028)

[Jay Foad via llvm-commits]

https://github.com/jayfoad commented:

Thanks for the test. It can be simplified as noted inline.

LGTM apart from that.

https://github.com/llvm/llvm-project/pull/124028