[llvm] [VPlan] Return Max from computeCost without underlying instrs. (PR #109708)

[Florian Hahn via llvm-commits]

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@@ -276,14 +276,6 @@ static Instruction *getInstructionForCost(const VPRecipeBase *R) {
     return dyn_cast_or_null<Instruction>(S->getUnderlyingValue());
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fhahn wrote:

Yep, I think originally the intention was to only use getUnderlyingInstr if it is guaranteed to be available, but perhaps it is time to revisit this?

https://github.com/llvm/llvm-project/pull/109708