[llvm] [LoopVectorize] Enable shuffle padding for masked interleaved accesses (PR #75329)

[via llvm-commits]

huhu233 wrote:

> Hello. Just to check - my understand was that we couldn't write back the same value to the missing elements as it would introduce a data race. Is that not correct any more? It might be very unlikely to cause problems in practice.

Hi, @davemgreen, thanks for your comment, it's a good point! But for my understanding, the missing elements is never used in the store interleaved group, will there be a data race scenario?

https://github.com/llvm/llvm-project/pull/75329