[llvm] [VPlan] Only use selectVectorizationFactor for cross-check (NFCI). (PR #103033)

[via llvm-commits]

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@@ -7217,18 +7198,21 @@ InstructionCost LoopVectorizationPlanner::cost(VPlan &Plan,
   return Cost;
 }
 
-ElementCount LoopVectorizationPlanner::getBestVF() {
+VectorizationFactor LoopVectorizationPlanner::getBestVF() {
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ayalz wrote:

nit (independent): more accurately called `computeBestVF()`, rather than suggesting it is simply retrieved.

https://github.com/llvm/llvm-project/pull/103033