[llvm] [InstCombine] Abandon BranchProbabilityAnalysis cache result (PR #86470)

[Haohai Wen via llvm-commits]

HaohaiWen wrote:

> The change InstCombine does to the CFG is trivial -- can we update the analysis instead?

I'm afraid that's not easy... We many need to check & update cached BranchProbabilityAnalysis in all callsite of BranchInst.swapSuccessors()...

https://github.com/llvm/llvm-project/pull/86470