[llvm] [LoopInterchange] Add an option to prioritize vectorization (PR #131988)

[Sjoerd Meijer via llvm-commits]

sjoerdmeijer wrote:

Sorry for picking this up late, I don't have any problems with this patch and this looks good as a first step, but this is not ideal as it relies on a user option. I need to have a look again how this works, but at the risk of saying something silly, why is this not a "or"? So, if it is profitable for cache or vectorisation, do it? 

https://github.com/llvm/llvm-project/pull/131988