[llvm] [VPlan] Extract reverse operation for reverse accesses (PR #146525)

[Florian Hahn via llvm-commits]

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@@ -2283,6 +2309,7 @@ static void transformRecipestoEVLRecipes(VPlan &Plan, VPValue &EVL) {
     HeaderMask->replaceAllUsesWith(EVLMask);
     ToErase.push_back(HeaderMask->getDefiningRecipe());
   }
+  convertToEVLReverse(Plan, TypeInfo, *AllOneMask, EVL);
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fhahn wrote:

The code structure in the function seems inconsistent; converting `FirstOrderRecurrenceSplice` is handled inline, while handling Reverse is handled in the function. Can we merge the loops, as now we need to unconditionally iterate over all recipes in the loop region anyways? 

https://github.com/llvm/llvm-project/pull/146525