[llvm] [SLP]Support LShr as base for copyable elements (PR #153393)

[Alexander Kornienko via llvm-commits]

alexfh wrote:

> > @alexey-bataev when will you be able to take a look at this?
> 
> Fixed in [0dddfab](https://github.com/llvm/llvm-project/commit/0dddfab54cc3091ca6d29d9b733f0987ed79dc16)

Thanks for the quick resolution! This fixes the original compilation as well.

https://github.com/llvm/llvm-project/pull/153393