[llvm] [X86] Vectorize non-power-of-two integer division (PR #215076)

[Sean Clarke via llvm-commits]

xarkenz wrote:

To add to what others are saying, it kind of seems like you haven't been able to build LLVM from source. If this is the case, it may be helpful to refer to a guide like [this](https://llvm.org/docs/MyFirstTypoFix.html#building-llvm) to get started. You need to be able to do this to test your changes locally and use `update_test_checks` with e.g. `--opt-binary=build/bin/opt`. A patch like this has no reason to touch GitHub workflows-- everything should be done within your local repository.

https://github.com/llvm/llvm-project/pull/215076