[llvm] [X86][SimplifyCFG][CodeGen] Support hoisting load/store with conditional faulting (PR #95515)

[Nikita Popov via llvm-commits]

nikic wrote:

I'm somewhat skeptical about having something like this as a generic transform in SimplifyCFG. This is going to substantially alter the IR on affected targets, in ways that subsequent optimization passes likely won't be able to deal well with. I think it would be a lot safer to start by forming these only in the backend.

https://github.com/llvm/llvm-project/pull/95515