[llvm] [LV][NFC] Remove simplifycfg pass from RUN lines (PR #195817)

[Florian Hahn via llvm-commits]

https://github.com/fhahn approved this pull request.

LGTM, thanks

I think in general we avoid running unrelated passes in transforms tests, mostly to focus testing on the pass at hand and to avoid that making changes to a pass like simplifycfg causes vectorizer test failures.

 

> Also, there is the possibility of additional passes masking bugs or inefficiencies in the vplan/generatd IR. 

I am not entirely sure about masking inefficiencies (e.g. I don't think we need to handle all possible combines in VPlan), but having the IR without other passes makes it much easier to relate the IR to the VPlan; sometimes instcombine folds for example can make this more difficult, because they applied some clever fold.


https://github.com/llvm/llvm-project/pull/195817