[llvm] [LV] Teach LoopVectorizationLegality about struct vector calls (PR #119221)

[Florian Hahn via llvm-commits]

================
@@ -71,6 +75,18 @@ inline bool isVectorizedTy(Type *Ty) {
   return Ty->isVectorTy();
 }
 
+// Returns true if `Ty` is a valid vector element type, void, or an unpacked
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fhahn wrote:

```suggestion
/// Returns true if `Ty` is a valid vector element type, void, or an unpacked
```

and below

https://github.com/llvm/llvm-project/pull/119221