diff --git a/llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp b/llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp
--- a/llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp
@@ -663,7 +663,7 @@
     // Return the potentially vectorized type based on 'I' and 'VF'.  'I' may
     // be either scalar or already vectorized with a same or lesser VF.
     Type *ElTy = OpTy->getScalarType();
-    return VectorType::get(ElTy, VF);
+    return FixedVectorType::get(ElTy, VF);
   }
 
   return nullptr;