diff --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
@@ -1925,7 +1925,8 @@
 LLVMType LLVMType::getVectorTy(LLVMType elementType, unsigned numElements) {
   // Lock access to the dialect as this may modify the LLVM context.
   return getLocked(&elementType.getDialect(), [=] {
-    return llvm::VectorType::get(elementType.getUnderlyingType(), numElements);
+    return llvm::FixedVectorType::get(elementType.getUnderlyingType(),
+                                      numElements);
   });
 }