[llvm] [VPlan] Handle VPWidenCastRecipe without underlying value in EVL transform (PR #120194)

[Florian Hahn via llvm-commits]

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@@ -1506,18 +1506,17 @@ static void transformRecipestoEVLRecipes(VPlan &Plan, VPValue &EVL) {
                   })
               .Case<VPWidenCastRecipe>(
                   [&](VPWidenCastRecipe *CInst) -> VPRecipeBase * {
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fhahn wrote:

The name here is also confusing, as `Inst` implies an instructions, while this is a cast recipe... Better name it `CastR`

https://github.com/llvm/llvm-project/pull/120194