[llvm] [X86, SimplifyCFG] Support hoisting load/store with conditional faulting (Part II) (PR #108812)

[Phoebe Wang via llvm-commits]

phoebewang wrote:

> We just need to add a tuning knob for `NumPHIInsts <= ProfitableToSinkInstructionThreshold`, from my perspective.

https://github.com/llvm/llvm-project/pull/110420

https://github.com/llvm/llvm-project/pull/108812