[llvm] [Scalarizer][DirectX] support structs return types (PR #111569)

[Finn Plummer via llvm-commits]

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@@ -699,6 +728,18 @@ bool ScalarizerVisitor::splitCall(CallInst &CI) {
   if (isVectorIntrinsicWithOverloadTypeAtArg(ID, -1))
     Tys.push_back(VS->SplitTy);
 
+  if (AreAllVectors) {
+    Type *PrevType = CallType->getContainedType(0);
+    Type *CallType = CI.getType();
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inbelic wrote:

nit: Is there a reason for this to be re-defined? I don't see any side-effects in `getVectorSplit/isStructAllVectors`

https://github.com/llvm/llvm-project/pull/111569