[llvm] [SLP]Enable float point math ops as copyables elements. (PR #169857)

[Alexey Bataev via llvm-commits]

alexey-bataev wrote:

> @alexey-bataev sorry I've lost track of your SLP patches - please can you ping any tickets you think are ready (and if there's any preferred order you have for them).

We can start with this one, then https://github.com/llvm/llvm-project/pull/162018, then https://github.com/llvm/llvm-project/pull/153589, then https://github.com/llvm/llvm-project/pull/150450. I'll try to update these patches

https://github.com/llvm/llvm-project/pull/169857