[llvm] [InstCombine] Propagate exact flags in transformation (PR #88340)

[Nikita Popov via llvm-commits]

nikic wrote:

@AtariDreams Your contribution behavior continues to be unacceptable, to the point that I am *this close* to requesting a ban from the LLVM organization for you.

Please, do not submit pull requests until you both have adequate test coverage and proofs. See https://llvm.org/docs/InstCombineContributorGuide.html for our contribution guidelines. If you want to submit a PR without these things, submit it as a draft pull request, and only mark it as ready for review when it is actually ready.

https://github.com/llvm/llvm-project/pull/88340