[llvm] [VPlan] Enable vectorization of early-exit loops with unit-stride fault-only-first loads (PR #151300)

[Shih-Po Hung via llvm-commits]

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arcbbb wrote:

Yes! I plan to rebase and rework this patch after https://github.com/llvm/llvm-project/pull/180039

https://github.com/llvm/llvm-project/pull/151300