[llvm] [LV] Add initial support for vectorizing literal struct return values (PR #109833)

[Benjamin Maxwell via llvm-commits]

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@@ -9607,7 +9624,7 @@ void VPReplicateRecipe::execute(VPTransformState &State) {
             VectorType::get(UI->getType(), State.VF));
         State.set(this, Poison);
       }
-      State.packScalarIntoVectorValue(this, *State.Lane);
+      State.packScalarIntoWideValue(this, *State.Lane);
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MacDue wrote:

As mentioned above, I've now updated loop LoopVectorizationLegality to only allow the case where the struct is produced by a call, and all users are extractvalue. I think this resolves the issue of dealing with structs in unsupported cases.



https://github.com/llvm/llvm-project/pull/109833