[llvm] [AArch64] Add MATCH loops to LoopIdiomVectorizePass (PR #101976)

[Ricardo Jesus via llvm-commits]

rj-jesus wrote:

> Doesn't your predicate simply ensure you never load more data than the range of the loop, but it doesn't protect you against seg faults?

Ah, of course, I see what you mean now, thanks very much for catching this! I'll add the guards and incorporate your other comments. Thank you again!

https://github.com/llvm/llvm-project/pull/101976