llvm-project

144bdf3e - [VPlan] Also check if plan for best legacy VF contains simplifications.

[VPlan] Also check if plan for best legacy VF contains simplifications. The plan for the VF chosen by the legacy cost model could also contain additional simplifications that cause cost differences. Also check if it contains simplifications. Fixes https://github.com/llvm/llvm-project/issues/114860.