[llvm] [X86][SimplifyCFG] Support hoisting load/store with conditional faulting (PR #96878)

[Nikita Popov via llvm-commits]

nikic wrote:

I wonder whether it is feasible to allow masked.load/masked.store to be used with scalars. The need to cast between `<1 x %T>` and `%T` everywhere is quite awkward and doesn't represent the underlying instructions well.

https://github.com/llvm/llvm-project/pull/96878