[llvm] [LoopVectorize] Enable hoisting of runtime checks by default (PR #71538)

[David Sherwood via llvm-commits]

david-arm wrote:

Hi @fhahn, I've created https://github.com/llvm/llvm-project/pull/73515 to prefer diff checks if we can prove the diff check will itself be invariant in the outer loop.

https://github.com/llvm/llvm-project/pull/71538