[llvm] [AMDGPU] Allow hoisting of V_READFIRSTLANE_B32 for uniform operand (PR #178312)

[Stanislav Mekhanoshin via llvm-commits]

rampitec wrote:

Closing this. We do not seem to be able to come to agreement and there is better way to spend time.

https://github.com/llvm/llvm-project/pull/178312