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

[via llvm-commits]

Andarwinux wrote:

> Perhaps we can implement the transformation in VectorCombine (for both scalar and vector cases) after it lands.

That PR looks like will never be landed.

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