[llvm] [LLVM][LICM] Skip unrelated accesses when looking for hoist/sink conflicting instructions. (PR #195132)

[Nikita Popov via llvm-commits]

nikic wrote:

> Can you share a test for what this fixes?

After https://github.com/llvm/llvm-project/pull/195606, I guess "anything that regressed that".

I'm convinced now that doing ModRef checks instead of the clobber walk is the right direction here.

https://github.com/llvm/llvm-project/pull/195132