--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mlir/test/Dialect/Linalg/tile_parallel.mlir	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,70 @@
+// RUN: mlir-opt %s -linalg-tile-to-parallel-loops -linalg-tile-sizes=2 | FileCheck %s -check-prefix=TILE-2 --dump-input-on-failure
+// RUN: mlir-opt %s -linalg-tile-to-parallel-loops -linalg-tile-sizes=0,2 | FileCheck %s -check-prefix=TILE-02 --dump-input-on-failure
+// RUN: mlir-opt %s -linalg-tile-to-parallel-loops -linalg-tile-sizes=0,0,2 | FileCheck %s -check-prefix=TILE-002 --dump-input-on-failure
+// RUN: mlir-opt %s -linalg-tile-to-parallel-loops -linalg-tile-sizes=2,3,4 | FileCheck %s -check-prefix=TILE-234 --dump-input-on-failure
+
+#id_2d = affine_map<(i, j) -> (i, j)>
+#pointwise_2d_trait = {
+  args_in = 2,
+  args_out = 1,
+  indexing_maps = [#id_2d, #id_2d, #id_2d],
+  iterator_types = ["parallel", "parallel"]
+}
+
+func @sum(%lhs: memref<?x?xf32, offset: ?, strides: [?, 1]>,
+          %rhs: memref<?x?xf32, offset: ?, strides: [?, 1]>,
+          %sum: memref<?x?xf32, offset: ?, strides: [?, 1]>) {
+  linalg.generic #pointwise_2d_trait %lhs, %rhs, %sum {
+  ^bb0(%lhs_in: f32, %rhs_in: f32, %sum_out: f32):
+    %result = addf %lhs_in, %rhs_in : f32
+    linalg.yield %result : f32
+  }: memref<?x?xf32, offset: ?, strides: [?, 1]>,
+     memref<?x?xf32, offset: ?, strides: [?, 1]>,
+     memref<?x?xf32, offset: ?, strides: [?, 1]>
+  return
+}
+// TILE-2-LABEL: func @sum(
+// TILE-2-SAME:    [[LHS:%.*]]: {{.*}}, [[RHS:%.*]]: {{.*}}, [[SUM:%.*]]: {{.*}}) {
+// TILE-2-DAG: [[C0:%.*]] = constant 0 : index
+// TILE-2-DAG: [[C1:%.*]] = constant 1 : index
+// TILE-2-DAG: [[C2:%.*]] = constant 2 : index
+// TILE-2: [[LHS_ROWS:%.*]] = dim [[LHS]], 0
+// TILE-2: loop.parallel ([[I:%.*]]) = ([[C0]]) to ([[LHS_ROWS]]) step ([[C2]]) {
+// TILE-2-NO: loop.parallel
+// TILE-2:   [[LHS_SUBVIEW:%.*]] = std.subview [[LHS]]
+// TILE-2:   [[RHS_SUBVIEW:%.*]] = std.subview [[RHS]]
+// TILE-2:   [[SUM_SUBVIEW:%.*]] = std.subview [[SUM]]
+// TILE-2:   linalg.generic {{.*}} [[LHS_SUBVIEW]], [[RHS_SUBVIEW]], [[SUM_SUBVIEW]] {
+
+// TILE-02-LABEL: func @sum(
+// TILE-02-SAME:    [[LHS:%.*]]: {{.*}}, [[RHS:%.*]]: {{.*}}, [[SUM:%.*]]: {{.*}}) {
+// TILE-02-DAG: [[C0:%.*]] = constant 0 : index
+// TILE-02-DAG: [[C1:%.*]] = constant 1 : index
+// TILE-02-DAG: [[C2:%.*]] = constant 2 : index
+// TILE-02: [[LHS_COLS:%.*]] = dim [[LHS]], 1
+// TILE-02: loop.parallel ([[I:%.*]]) = ([[C0]]) to ([[LHS_COLS]]) step ([[C2]]) {
+// TILE-02-NO: loop.parallel
+// TILE-02:   [[LHS_SUBVIEW:%.*]] = std.subview [[LHS]]
+// TILE-02:   [[RHS_SUBVIEW:%.*]] = std.subview [[RHS]]
+// TILE-02:   [[SUM_SUBVIEW:%.*]] = std.subview [[SUM]]
+// TILE-02:   linalg.generic {{.*}} [[LHS_SUBVIEW]], [[RHS_SUBVIEW]], [[SUM_SUBVIEW]] {
+
+// TILE-002-LABEL: func @sum(
+// TILE-002-SAME:    [[LHS:%.*]]: {{.*}}, [[RHS:%.*]]: {{.*}}, [[SUM:%.*]]: {{.*}}) {
+// TILE-002-NO: loop.parallel
+// TILE-002:   linalg.generic {{.*}} [[LHS]], [[RHS]], [[SUM]] {
+
+// TILE-234-LABEL: func @sum(
+// TILE-234-SAME:    [[LHS:%.*]]: {{.*}}, [[RHS:%.*]]: {{.*}}, [[SUM:%.*]]: {{.*}}) {
+// TILE-234-DAG: [[C0:%.*]] = constant 0 : index
+// TILE-234-DAG: [[C1:%.*]] = constant 1 : index
+// TILE-234-DAG: [[C2:%.*]] = constant 2 : index
+// TILE-234-DAG: [[C3:%.*]] = constant 3 : index
+// TILE-234: [[LHS_ROWS:%.*]] = dim [[LHS]], 0
+// TILE-234: [[LHS_COLS:%.*]] = dim [[LHS]], 1
+// TILE-234: loop.parallel ([[I:%.*]], [[J:%.*]]) = ([[C0]], [[C0]]) to ([[LHS_ROWS]], [[LHS_COLS]]) step ([[C2]], [[C3]]) {
+// TILE-234-NO: loop.parallel
+// TILE-234:   [[LHS_SUBVIEW:%.*]] = std.subview [[LHS]]
+// TILE-234:   [[RHS_SUBVIEW:%.*]] = std.subview [[RHS]]
+// TILE-234:   [[SUM_SUBVIEW:%.*]] = std.subview [[SUM]]
+// TILE-234:   linalg.generic {{.*}} [[LHS_SUBVIEW]], [[RHS_SUBVIEW]], [[SUM_SUBVIEW]] {