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
@@ -2087,7 +2087,7 @@
         loc, "expected LLVM IR dialect vector type for operand #1");
   auto vType =
       LLVM::getVectorType(LLVM::getVectorElementType(typeV1), maskAttr.size(),
-                          typeV1.cast<VectorType>().isScalable());
+                          LLVM::isScalableVectorType(typeV1));
   result.addTypes(vType);
   return success();
 }
diff --git a/mlir/test/Dialect/LLVMIR/roundtrip.mlir b/mlir/test/Dialect/LLVMIR/roundtrip.mlir
--- a/mlir/test/Dialect/LLVMIR/roundtrip.mlir
+++ b/mlir/test/Dialect/LLVMIR/roundtrip.mlir
@@ -272,15 +272,17 @@
 }
 
 // CHECK-LABEL: @vect
-func.func @vect(%arg0: vector<4xf32>, %arg1: i32, %arg2: f32) {
+func.func @vect(%arg0: vector<4xf32>, %arg1: i32, %arg2: f32, %arg3: !llvm.vec<2 x ptr<i32>>) {
 // CHECK:  = llvm.extractelement {{.*}} : vector<4xf32>
   %0 = llvm.extractelement %arg0[%arg1 : i32] : vector<4xf32>
 // CHECK:  = llvm.insertelement {{.*}} : vector<4xf32>
   %1 = llvm.insertelement %arg2, %arg0[%arg1 : i32] : vector<4xf32>
 // CHECK:  = llvm.shufflevector {{.*}} [0 : i32, 0 : i32, 0 : i32, 0 : i32, 7 : i32] : vector<4xf32>, vector<4xf32>
   %2 = llvm.shufflevector %arg0, %arg0 [0 : i32, 0 : i32, 0 : i32, 0 : i32, 7 : i32] : vector<4xf32>, vector<4xf32>
+// CHECK:  = llvm.shufflevector %{{.+}}, %{{.+}} [1 : i32, 0 : i32] : !llvm.vec<2 x ptr<i32>>, !llvm.vec<2 x ptr<i32>>
+  %3 = llvm.shufflevector %arg3, %arg3 [1 : i32, 0 : i32] : !llvm.vec<2 x ptr<i32>>, !llvm.vec<2 x ptr<i32>>
 // CHECK:  = llvm.mlir.constant(dense<1.000000e+00> : vector<4xf32>) : vector<4xf32>
-  %3 = llvm.mlir.constant(dense<1.0> : vector<4xf32>) : vector<4xf32>
+  %4 = llvm.mlir.constant(dense<1.0> : vector<4xf32>) : vector<4xf32>
   return
 }