[llvm] [VPlan] Unroll VPReplicateRecipe by VF. (PR #142433)

[via llvm-commits]

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@@ -608,6 +608,32 @@ Value *VPInstruction::generate(VPTransformState &State) {
     return Builder.CreateVectorSplat(
         State.VF, State.get(getOperand(0), /*IsScalar*/ true), "broadcast");
   }
+  case VPInstruction::BuildStructVector: {
+    // For struct types, we need to build a new 'wide' struct type, where each
+    // element is widened, i.e. we crate a struct of vectors .
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ayalz wrote:

```suggestion
    // element is widened, i.e., we create a struct of vectors.
```

https://github.com/llvm/llvm-project/pull/142433