[llvm] [LV][EVL] Support cast instruction with EVL-vectorization (PR #108351)

[Alexey Bataev via llvm-commits]

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@@ -1344,6 +1344,13 @@ static void transformRecipestoEVLRecipes(VPlan &Plan, VPValue &EVL) {
                   return nullptr;
                 return new VPWidenEVLRecipe(*W, EVL);
               })
+              .Case<VPWidenCastRecipe>(
+                  [&](VPWidenCastRecipe *W) -> VPRecipeBase * {
+                    auto Inst = cast<CastInst>(W->getUnderlyingInstr());
+                    if (!Inst->isCast())
+                      return nullptr;
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alexey-bataev wrote:

Is it possible to have not-a-cast here?

https://github.com/llvm/llvm-project/pull/108351