[llvm-branch-commits] [llvm] release/20.x: [LV][VPlan] Prevent calculate cost for skiped instructions in precomputeCosts(). (#127966) (PR #128694)

[Florian Hahn via llvm-branch-commits]

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

This fixes a potential crash with assertions enabled, would be good to pick to avoid assertions.

https://github.com/llvm/llvm-project/pull/128694