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

[David Green via llvm-commits]

https://github.com/davemgreen approved this pull request.

With that fixed, and from the perf Ive seen, this LGTM. Thanks

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