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

[Ramkumar Ramachandra via llvm-commits]

================
@@ -1104,6 +1107,13 @@ InstructionCost VPInstruction::computeCost(ElementCount VF,
                                   I32Ty, {Arg0Ty, I32Ty, I1Ty});
     return Ctx.TTI.getIntrinsicInstrCost(Attrs, Ctx.CostKind);
   }
+  case VPInstruction::Reverse: {
+    assert(VF.isVector() && "Reverse operation must be vector type");
+    Type *VectorTy = toVectorTy(Ctx.Types.inferScalarType(this), VF);
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artagnon wrote:

```suggestion
    Type *VectorTy = toVectorTy(Ctx.Types.inferScalarType(getOperand(0)), VF);
```

?

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