[llvm] [SCEVExpander] Do not insert after callbr (PR #201322)

[Nikita Popov via llvm-commits]

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nikic wrote:

Do catchswitch and callbr actually need separate handling? I'd expect that the fallback would be the same for both. At least I don't see a reason why one should fall back to MustDominate and the other to the start of the MustDominate block.

https://github.com/llvm/llvm-project/pull/201322