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

[David Sherwood via llvm-commits]

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@@ -907,6 +907,12 @@ class VPInstruction : public VPRecipeWithIRFlags,
     BranchOnCount,
     BranchOnCond,
     Broadcast,
+    /// Creates a vector containing all operands. The vector element count
+    /// matches the number of operands.
+    BuildVector,
+    /// Creates a struct of vectors containing all operands. The vector element
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david-arm wrote:

Same as above.

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