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

[Florian Hahn via llvm-commits]

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@@ -2341,21 +2356,37 @@ InstructionCost VPWidenCastRecipe::computeCost(ElementCount VF,
     return TTI::CastContextHint::Normal;
   };
 
+  using namespace llvm::VPlanPatternMatch;
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fhahn wrote:

```suggestion
```

There should already be a `using` at top

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