Fix a typo and add a test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128331 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/ScalarReplAggregates.cpp b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
index c261ded..de7bb41 100644
--- a/lib/Transforms/Scalar/ScalarReplAggregates.cpp
+++ b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
@@ -380,7 +380,7 @@
     return true;
 
   const Type *ElementTy = cast<VectorType>(VectorTy)->getElementType();
-  const Type *InElementTy = cast<VectorType>(VectorTy)->getElementType();
+  const Type *InElementTy = cast<VectorType>(VInTy)->getElementType();
 
   // Do not allow mixed integer and floating-point accesses from vectors of
   // different sizes.