[llvm] Adds test coverage for reassociation of scalar & vector boolean types (PR #89899)

[Nikita Popov via llvm-commits]

nikic wrote:

> Resolve #64840

I'm a bit confused here, this seems to be just test coverage, not a fix for that issue? The vector tests seem to still show the linearization behavior if I'm understanding things correctly.

https://github.com/llvm/llvm-project/pull/89899