[llvm] [AArch64] ConditionOptimizer: replace per-block DenseMap with ScopedHashTable traversal (PR #196746)

[Paul Osmialowski via llvm-commits]

pawosm-arm wrote:

> @sushgokh @pawosm-arm My apologies, I'll need to look into the cause. I can open a PR to reverse the change for now

Hi @hussam-alhassan, yes please, that would help. I've reverted it locally and can confirm it helps.

https://github.com/llvm/llvm-project/pull/196746