[llvm] [VPlan] Move call widening decision to VPlan. (NFCI) (PR #195518)

[Ramkumar Ramachandra via llvm-commits]

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@@ -2012,7 +2016,7 @@ static InstructionCost getCostForIntrinsics(Intrinsic::ID ID,
 InstructionCost VPWidenIntrinsicRecipe::computeCost(ElementCount VF,
                                                     VPCostContext &Ctx) const {
   SmallVector<const VPValue *> ArgOps(operands());
-  return getCostForIntrinsics(VectorIntrinsicID, ArgOps, *this, VF, Ctx);
+  return computeIntrinsicCost(VectorIntrinsicID, ArgOps, *this, VF, Ctx);
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artagnon wrote:

I think with your recent'ish changes to ArrayRef,

```cpp
computeIntrinsicCost(VectorIntrinsicID, operands(), *this, VF, Ctx);
```

should be possible?

https://github.com/llvm/llvm-project/pull/195518