[llvm] [EarlyIfConversion] Extend data dependent analysis across multiple blocks (PR #180623)

[Nathan Corbyn via llvm-commits]

https://github.com/cofibrant commented:

Thanks for the update--I like the new approach to checking for call instructions. I had a few comments on the logic so haven't read the tests carefully yet, but I think this is nearly there.

https://github.com/llvm/llvm-project/pull/180623