[llvm] [SLP][REVEC] Add getScalarizationOverhead helper function to reduce error when REVEC is enabled. (PR #128530)

[Alexey Bataev via llvm-commits]

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@@ -5221,9 +5256,9 @@ BoUpSLP::canVectorizeLoads(ArrayRef<Value *> VL, const Value *VL0,
           PtrVecTy, DemandedElts, /*Insert=*/true, /*Extract=*/false, CostKind);
     else
       VectorGEPCost +=
-          TTI.getScalarizationOverhead(
-              PtrVecTy, APInt::getOneBitSet(VecTy->getNumElements(), 0),
-              /*Insert=*/true, /*Extract=*/false, CostKind) +
+          TTI.getScalarizationOverhead(PtrVecTy, APInt::getOneBitSet(Sz, 0),
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alexey-bataev wrote:

This is not a part of this change, the common function is not used

https://github.com/llvm/llvm-project/pull/128530