[llvm] [InstCombine] Split div/rem by a select of constants with a variable dividend (PR #216908)

[via llvm-commits]

Andarwinux wrote:

If I understand correctly, there are still some InstCombine passes after VectorCombine. If placed in VectorCombine, how to prevent InstCombine reverts this optimization?

https://github.com/llvm/llvm-project/pull/216908