[llvm] [SROA]: Only defer trying partial sized ptr or ptr vector types (PR #82279)

[Matt Arsenault via llvm-commits]

================
@@ -2314,42 +2346,33 @@ static VectorType *isVectorPromotionViable(Partition &P, const DataLayout &DL) {
       Ty = SI->getValueOperand()->getType();
     else
       continue;
+
+    auto CandTy =
+        isa<VectorType>(Ty) ? cast<VectorType>(Ty)->getElementType() : Ty;
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arsenm wrote:

This is getScalarType 

https://github.com/llvm/llvm-project/pull/82279