[llvm] [LoopSink] check conflicting preheader memory access before sink (PR #195510)

[Nikita Popov via llvm-commits]

https://github.com/nikic commented:

Hm, I'm wondering why this is only coming up now. It looks like the load case is being handled in canSinkOrHoist here: https://github.com/llvm/llvm-project/blob/35c7191f3a1a4e0fec44fa14331f03f2d8df2fc2/llvm/lib/Transforms/Scalar/LICM.cpp#L2415-L2417

https://github.com/llvm/llvm-project/pull/195510