[llvm] [LV] Move check if any vector insts will be generated to VPlan. (PR #96622)

[Florian Hahn via llvm-commits]

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@@ -4795,9 +4783,92 @@ static void emitInvalidCostRemarks(SmallVector<InstructionVFPair> InvalidCosts,
   } while (!Tail.empty());
 }
 
+static bool willGenerateVectorInstructions(VPlan &Plan, ElementCount VF,
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fhahn wrote:

Adjusted, thanks!

https://github.com/llvm/llvm-project/pull/96622