diff --git a/mlir/test/Dialect/SparseTensor/conversion.mlir b/mlir/test/Dialect/SparseTensor/conversion.mlir
--- a/mlir/test/Dialect/SparseTensor/conversion.mlir
+++ b/mlir/test/Dialect/SparseTensor/conversion.mlir
@@ -1,10 +1,4 @@
-// First use with `kViaCOO` for sparse2sparse conversion (the old way).
-// RUN: mlir-opt %s --sparse-tensor-conversion="s2s-strategy=1" \
-// RUN:    --canonicalize --cse | FileCheck %s
-//
-// Now again with `kAuto` (the new default).
-// RUN: mlir-opt %s --sparse-tensor-conversion="s2s-strategy=0" \
-// RUN:    --canonicalize --cse | FileCheck %s -check-prefix=CHECKAUTO
+// RUN: mlir-opt %s --sparse-tensor-conversion --canonicalize --cse | FileCheck %s
 
 #SparseVector = #sparse_tensor.encoding<{
   dimLevelType = ["compressed"]
@@ -233,29 +227,15 @@
 
 // CHECK-LABEL: func @sparse_convert_1d_ss(
 //  CHECK-SAME: %[[A:.*]]: !llvm.ptr<i8>)
-//  CHECK-DAG:  %[[ToCOO:.*]] = arith.constant 5 : i32
-//  CHECK-DAG:  %[[FromCOO:.*]] = arith.constant 2 : i32
+//   CHECK-DAG: %[[SparseToSparse:.*]] = arith.constant 3 : i32
 //   CHECK-DAG: %[[P:.*]] = memref.alloca() : memref<1xi8>
 //   CHECK-DAG: %[[Q:.*]] = memref.alloca() : memref<1xindex>
 //   CHECK-DAG: %[[R:.*]] = memref.alloca() : memref<1xindex>
 //   CHECK-DAG: %[[X:.*]] = memref.cast %[[P]] : memref<1xi8> to memref<?xi8>
 //   CHECK-DAG: %[[Y:.*]] = memref.cast %[[Q]] : memref<1xindex> to memref<?xindex>
 //   CHECK-DAG: %[[Z:.*]] = memref.cast %[[R]] : memref<1xindex> to memref<?xindex>
-//       CHECK: %[[C:.*]] = call @newSparseTensor(%[[X]], %[[Y]], %[[Z]], %{{.*}}, %{{.*}}, %{{.*}}, %[[ToCOO]], %[[A]])
-//       CHECK: %[[T:.*]] = call @newSparseTensor(%[[X]], %[[Y]], %[[Z]], %{{.*}}, %{{.*}}, %{{.*}}, %[[FromCOO]], %[[C]])
-//       CHECK: call @delSparseTensorCOOF32(%[[C]])
+//       CHECK: %[[T:.*]] = call @newSparseTensor(%[[X]], %[[Y]], %[[Z]], %{{.*}}, %{{.*}}, %{{.*}}, %[[SparseToSparse]], %[[A]])
 //       CHECK: return %[[T]] : !llvm.ptr<i8>
-// CHECKAUTO-LABEL: func @sparse_convert_1d_ss(
-//  CHECKAUTO-SAME: %[[A:.*]]: !llvm.ptr<i8>)
-//   CHECKAUTO-DAG: %[[SparseToSparse:.*]] = arith.constant 3 : i32
-//   CHECKAUTO-DAG: %[[P:.*]] = memref.alloca() : memref<1xi8>
-//   CHECKAUTO-DAG: %[[Q:.*]] = memref.alloca() : memref<1xindex>
-//   CHECKAUTO-DAG: %[[R:.*]] = memref.alloca() : memref<1xindex>
-//   CHECKAUTO-DAG: %[[X:.*]] = memref.cast %[[P]] : memref<1xi8> to memref<?xi8>
-//   CHECKAUTO-DAG: %[[Y:.*]] = memref.cast %[[Q]] : memref<1xindex> to memref<?xindex>
-//   CHECKAUTO-DAG: %[[Z:.*]] = memref.cast %[[R]] : memref<1xindex> to memref<?xindex>
-//       CHECKAUTO: %[[T:.*]] = call @newSparseTensor(%[[X]], %[[Y]], %[[Z]], %{{.*}}, %{{.*}}, %{{.*}}, %[[SparseToSparse]], %[[A]])
-//       CHECKAUTO: return %[[T]] : !llvm.ptr<i8>
 func.func @sparse_convert_1d_ss(%arg0: tensor<?xf32, #SparseVector64>) -> tensor<?xf32, #SparseVector32> {
   %0 = sparse_tensor.convert %arg0 : tensor<?xf32, #SparseVector64> to tensor<?xf32, #SparseVector32>
   return %0 : tensor<?xf32, #SparseVector32>
diff --git a/mlir/test/Dialect/SparseTensor/conversion_sparse2sparse.mlir b/mlir/test/Dialect/SparseTensor/conversion_sparse2sparse.mlir
new file mode 100644
--- /dev/null
+++ b/mlir/test/Dialect/SparseTensor/conversion_sparse2sparse.mlir
@@ -0,0 +1,49 @@
+// First use with `kViaCOO` for sparse2sparse conversion (the old way).
+// RUN: mlir-opt %s --sparse-tensor-conversion="s2s-strategy=1" \
+// RUN:    --canonicalize --cse | FileCheck %s -check-prefix=CHECK-COO
+//
+// Now again with `kAuto` (the new default).
+// RUN: mlir-opt %s --sparse-tensor-conversion="s2s-strategy=0" \
+// RUN:    --canonicalize --cse | FileCheck %s -check-prefix=CHECK-AUTO
+
+#SparseVector64 = #sparse_tensor.encoding<{
+  dimLevelType = ["compressed"],
+  pointerBitWidth = 64,
+  indexBitWidth = 64
+}>
+
+#SparseVector32 = #sparse_tensor.encoding<{
+  dimLevelType = ["compressed"],
+  pointerBitWidth = 32,
+  indexBitWidth = 32
+}>
+
+// CHECK-COO-LABEL: func @sparse_convert(
+//  CHECK-COO-SAME: %[[A:.*]]: !llvm.ptr<i8>)
+//  CHECK-COO-DAG:  %[[ToCOO:.*]] = arith.constant 5 : i32
+//  CHECK-COO-DAG:  %[[FromCOO:.*]] = arith.constant 2 : i32
+//   CHECK-COO-DAG: %[[P:.*]] = memref.alloca() : memref<1xi8>
+//   CHECK-COO-DAG: %[[Q:.*]] = memref.alloca() : memref<1xindex>
+//   CHECK-COO-DAG: %[[R:.*]] = memref.alloca() : memref<1xindex>
+//   CHECK-COO-DAG: %[[X:.*]] = memref.cast %[[P]] : memref<1xi8> to memref<?xi8>
+//   CHECK-COO-DAG: %[[Y:.*]] = memref.cast %[[Q]] : memref<1xindex> to memref<?xindex>
+//   CHECK-COO-DAG: %[[Z:.*]] = memref.cast %[[R]] : memref<1xindex> to memref<?xindex>
+//       CHECK-COO: %[[C:.*]] = call @newSparseTensor(%[[X]], %[[Y]], %[[Z]], %{{.*}}, %{{.*}}, %{{.*}}, %[[ToCOO]], %[[A]])
+//       CHECK-COO: %[[T:.*]] = call @newSparseTensor(%[[X]], %[[Y]], %[[Z]], %{{.*}}, %{{.*}}, %{{.*}}, %[[FromCOO]], %[[C]])
+//       CHECK-COO: call @delSparseTensorCOOF32(%[[C]])
+//       CHECK-COO: return %[[T]] : !llvm.ptr<i8>
+// CHECK-AUTO-LABEL: func @sparse_convert(
+//  CHECK-AUTO-SAME: %[[A:.*]]: !llvm.ptr<i8>)
+//   CHECK-AUTO-DAG: %[[SparseToSparse:.*]] = arith.constant 3 : i32
+//   CHECK-AUTO-DAG: %[[P:.*]] = memref.alloca() : memref<1xi8>
+//   CHECK-AUTO-DAG: %[[Q:.*]] = memref.alloca() : memref<1xindex>
+//   CHECK-AUTO-DAG: %[[R:.*]] = memref.alloca() : memref<1xindex>
+//   CHECK-AUTO-DAG: %[[X:.*]] = memref.cast %[[P]] : memref<1xi8> to memref<?xi8>
+//   CHECK-AUTO-DAG: %[[Y:.*]] = memref.cast %[[Q]] : memref<1xindex> to memref<?xindex>
+//   CHECK-AUTO-DAG: %[[Z:.*]] = memref.cast %[[R]] : memref<1xindex> to memref<?xindex>
+//       CHECK-AUTO: %[[T:.*]] = call @newSparseTensor(%[[X]], %[[Y]], %[[Z]], %{{.*}}, %{{.*}}, %{{.*}}, %[[SparseToSparse]], %[[A]])
+//       CHECK-AUTO: return %[[T]] : !llvm.ptr<i8>
+func.func @sparse_convert(%arg0: tensor<?xf32, #SparseVector64>) -> tensor<?xf32, #SparseVector32> {
+  %0 = sparse_tensor.convert %arg0 : tensor<?xf32, #SparseVector64> to tensor<?xf32, #SparseVector32>
+  return %0 : tensor<?xf32, #SparseVector32>
+}