[clang] [clang-tools-extra] [llvm] [SimplifyCFG] Prevent merging cbranch to cbranch if the branch probability from the first to second is too low. (PR #69375)

[Nicolai Hähnle via cfe-commits]

nhaehnle wrote:

I've been puzzling over the rationale for looking at `MD_unpredictable`. How 
can a branch that is heavily biased to one side be unpredictable?

https://github.com/llvm/llvm-project/pull/69375
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