[llvm] [VPlan] Lower safe uniform load to unconditional scalar load (PR #216767)

[Luke Lau via llvm-commits]

https://github.com/lukel97 commented:

I think this should run after convertToStridedAccesses. There's a TODO in there to lower loads of uniform addresses to strided loads if it's profitable, and I think some microarchs on RISC-V might optimise for this. 

https://github.com/llvm/llvm-project/pull/216767