[llvm] IR/Verifier: Allow vector type in atomic load and store (PR #148893)

[Matt Arsenault via llvm-commits]

arsenm wrote:

> Yes I'm worried about that too. Can you add tests to show what happens if the backend doesn't support the vector atomics?

I don't think this is a good use of time, the legalization is handled later in the stack 


https://github.com/llvm/llvm-project/pull/148893