[llvm] [AArch64] Don't run loop-idiom-vectorize pass in the O0 pipeline (PR #156802)

[Madhur Amilkanthwar via llvm-commits]

madhur13490 wrote:

I may be missing the broader context, while I do see the tagged issue. Is this purely because x86 does not run the pass? How do we decide what goes in O0?

https://github.com/llvm/llvm-project/pull/156802