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

[Florian Hahn via llvm-commits]

================
@@ -943,11 +955,24 @@ bool LoopVectorizationLegality::canVectorizeInstrs() {
       if (CI && !VFDatabase::getMappings(*CI).empty())
         VecCallVariantsFound = true;
 
+      auto canWidenInstruction = [this](Instruction const &Inst) {
----------------
fhahn wrote:

```suggestion
      auto CanWidenInstruction = [this](Instruction const &Inst) {
```
(Local variable)

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