onnx-mlir/test/mlir/onnx/onnx_shape_inference.mlir

// RUN: onnx-mlir-opt --shape-inference %s -split-input-file | FileCheck %s

// -----

//===----------------------------------------------------------------------===//
/// Test the default behavior of transpose when no information for the
/// permutation of the axes is provided and when a permutation is provided.
//===----------------------------------------------------------------------===//

func @test_default_transpose(%arg0 : tensor<5x5x1x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.Transpose"(%arg0) : (tensor<5x5x1x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_default_transpose
  // CHECK: [[RES:%.+]] = "onnx.Transpose"(%arg0) : (tensor<5x5x1x32xf32>) -> tensor<32x1x5x5xf32>
  // CHECK: return [[RES]] : tensor<32x1x5x5xf32>
}

// -----

/// Test shape inference for transposition when perm attribute is specified.

func @test_transpose(%arg0 : tensor<5x5x1x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.Transpose"(%arg0) {perm = [2, 0, 3, 1]} : (tensor<5x5x1x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_transpose
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Transpose"(%arg0) {perm = [2, 0, 3, 1]} : (tensor<5x5x1x32xf32>) -> tensor<1x5x32x5xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x32x5xf32>
}

// -----

//===----------------------------------------------------------------------===//
/// Test the shape inferencing scheme for the matmul operation.
//===----------------------------------------------------------------------===//

/// MatMul: 1-D x 1-D

func @test_matmul_1(%arg0 : tensor<32xf32>, %arg1 : tensor<32xf32>) -> tensor<*xf32> {
  %0 = "onnx.MatMul"(%arg0, %arg1) : (tensor<32xf32>, tensor<32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_matmul_1
  // CHECK: [[RES1:%.+]] = "onnx.MatMul"(%arg0, %arg1) : (tensor<32xf32>, tensor<32xf32>) -> tensor<1xf32>
  // CHECK: return [[RES1]] : tensor<1xf32>
}

// -----

/// MatMul: K-D x 2-D (K > 2)

func @test_matmul_2(%arg0 : tensor<16x?x64x42xf32>, %arg1 : tensor<42x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.MatMul"(%arg0, %arg1) : (tensor<16x?x64x42xf32>, tensor<42x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_matmul_2
  // CHECK: [[RES2:%.+]] = "onnx.MatMul"(%arg0, %arg1) : (tensor<16x?x64x42xf32>, tensor<42x32xf32>) -> tensor<16x?x64x32xf32>
  // CHECK: return [[RES2]] : tensor<16x?x64x32xf32>
}

// -----

/// MatMul: 2-D x K-D (K > 2)

func @test_matmul_3(%arg0 : tensor<64x42xf32>, %arg1 : tensor<16x?x42x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.MatMul"(%arg0, %arg1) : (tensor<64x42xf32>, tensor<16x?x42x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_matmul_3
  // CHECK: [[RES3:%.+]] = "onnx.MatMul"(%arg0, %arg1) : (tensor<64x42xf32>, tensor<16x?x42x32xf32>) -> tensor<16x?x64x32xf32>
  // CHECK: return [[RES3]] : tensor<16x?x64x32xf32>
}

// -----

/// MatMul: 2-D x K-D (K > 2)

func @test_matmul_4(%arg0 : tensor<64x42xf32>, %arg1 : tensor<?x?x?x?xf32>) -> tensor<*xf32> {
  %0 = "onnx.MatMul"(%arg0, %arg1) : (tensor<64x42xf32>, tensor<?x?x?x?xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_matmul_4
  // CHECK: [[RES4:%.+]] = "onnx.MatMul"(%arg0, %arg1) : (tensor<64x42xf32>, tensor<?x?x?x?xf32>) -> tensor<?x?x64x?xf32>
  // CHECK: return [[RES4]] : tensor<?x?x64x?xf32>
}

// -----

/// MatMul: K1-D x K2-D (K1 > 2, K2 > 2)

func @test_matmul_5(%arg0 : tensor<16x?x?x42xf32>, %arg1 : tensor<32x?x64x42x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.MatMul"(%arg0, %arg1) : (tensor<16x?x?x42xf32>, tensor<32x?x64x42x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_matmul_5
  // CHECK: [[RES5:%.+]] = "onnx.MatMul"(%arg0, %arg1) : (tensor<16x?x?x42xf32>, tensor<32x?x64x42x32xf32>) -> tensor<32x16x64x?x32xf32>
  // CHECK: return [[RES5]] : tensor<32x16x64x?x32xf32>
}

// -----

/// MatMul: 1-D x 2-D

func @test_matmul_6(%arg0 : tensor<32xf32>, %arg1 : tensor<32x64xf32>) -> tensor<*xf32> {
  %0 = "onnx.MatMul"(%arg0, %arg1) : (tensor<32xf32>, tensor<32x64xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_matmul_6
  // CHECK: [[RES6:%.+]] = "onnx.MatMul"(%arg0, %arg1) : (tensor<32xf32>, tensor<32x64xf32>) -> tensor<64xf32>
  // CHECK: return [[RES6]] : tensor<64xf32>
}

// -----

/// MatMul: 2-D x 1-D

func @test_matmul_7(%arg0 : tensor<32x64xf32>, %arg1 : tensor<64xf32>) -> tensor<*xf32> {
  %0 = "onnx.MatMul"(%arg0, %arg1) : (tensor<32x64xf32>, tensor<64xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_matmul_7
  // CHECK: [[RES7:%.+]] = "onnx.MatMul"(%arg0, %arg1) : (tensor<32x64xf32>, tensor<64xf32>) -> tensor<32xf32>
  // CHECK: return [[RES7]] : tensor<32xf32>
}

// -----

/// MatMul: 2-D x 2-D

func @test_matmul_8(%arg0 : tensor<32x64xf32>, %arg1 : tensor<64x128xf32>) -> tensor<*xf32> {
  %0 = "onnx.MatMul"(%arg0, %arg1) : (tensor<32x64xf32>, tensor<64x128xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_matmul_8
  // CHECK: [[RES8:%.+]] = "onnx.MatMul"(%arg0, %arg1) : (tensor<32x64xf32>, tensor<64x128xf32>) -> tensor<32x128xf32>
  // CHECK: return [[RES8]] : tensor<32x128xf32>
}

// -----

/// MatMul: 1-D x N-D

func @test_matmul_9(%arg0 : tensor<42xf32>, %arg1 : tensor<?x42x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.MatMul"(%arg0, %arg1) : (tensor<42xf32>, tensor<?x42x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_matmul_9
  // CHECK: [[RES1:%.+]] = "onnx.MatMul"(%arg0, %arg1) : (tensor<42xf32>, tensor<?x42x32xf32>) -> tensor<?x32xf32>
  // CHECK: return [[RES1]] : tensor<?x32xf32>
}

// -----

/// MatMul: N-D x 1-D

func @test_matmul_10(%arg0 : tensor<?x42x32xf32>, %arg1 : tensor<32xf32>) -> tensor<*xf32> {
  %0 = "onnx.MatMul"(%arg0, %arg1) : (tensor<?x42x32xf32>, tensor<32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_matmul_10
  // CHECK: [[RES1:%.+]] = "onnx.MatMul"(%arg0, %arg1) : (tensor<?x42x32xf32>, tensor<32xf32>) -> tensor<?x42xf32>
  // CHECK: return [[RES1]] : tensor<?x42xf32>
}

// -----

//===----------------------------------------------------------------------===//
/// Test shape inference for Conv (first with no bias) operation and all its attributes.
//===----------------------------------------------------------------------===//

/// Default and required attributes for 1-D convolution.

func @test_conv_no_bias_0(%arg0 : tensor<1x2x32xf32>, %arg1 : tensor<5x2x6xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", group = 1 : i64} : (tensor<1x2x32xf32>, tensor<5x2x6xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_0
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [1], group = 1 : i64, kernel_shape = [6], pads = [0, 0], strides = [1]} : (tensor<1x2x32xf32>, tensor<5x2x6xf32>, none) -> tensor<1x5x27xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x27xf32>
}

// -----

/// Default and required attributes.

func @test_conv_no_bias_1(%arg0 : tensor<1x2x32x64xf32>, %arg1 : tensor<5x2x6x7xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", group = 1 : i64} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_1
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [1, 1], group = 1 : i64, kernel_shape = [6, 7], pads = [0, 0, 0, 0], strides = [1, 1]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<1x5x27x58xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x27x58xf32>
}

// -----

/// kernel_shape attribute.

func @test_conv_no_bias_2(%arg0 : tensor<1x2x32x64xf32>, %arg1 : tensor<5x2x6x7xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", group = 1 : i64, kernel_shape = [8, 9]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_2
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [1, 1], group = 1 : i64, kernel_shape = [8, 9], pads = [0, 0, 0, 0], strides = [1, 1]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<1x5x25x56xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x25x56xf32>
}

// -----

/// pads attribute.
/// Use pads to make output size equal to input size by adding K - 1 to the result.

func @test_conv_no_bias_3(%arg0 : tensor<1x2x32x64xf32>, %arg1 : tensor<5x2x6x10xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", group = 1 : i64, pads = [2, 4, 3, 5]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x10xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_3
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [1, 1], group = 1 : i64, kernel_shape = [6, 10], pads = [2, 4, 3, 5], strides = [1, 1]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x10xf32>, none) -> tensor<1x5x32x64xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x32x64xf32>
}

// -----

/// auto_pad set to SAME_UPPER and SAME_LOWER.

func @test_conv_no_bias_4(%arg0 : tensor<1x2x32x64xf32>, %arg1 : tensor<5x2x6x10xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "SAME_UPPER", group = 1 : i64} : (tensor<1x2x32x64xf32>, tensor<5x2x6x10xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_4
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [1, 1], group = 1 : i64, kernel_shape = [6, 10], pads = [2, 4, 3, 5], strides = [1, 1]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x10xf32>, none) -> tensor<1x5x32x64xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x32x64xf32>
}

// -----

func @test_conv_no_bias_5(%arg0 : tensor<1x2x32x64xf32>, %arg1 : tensor<5x2x6x10xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "SAME_LOWER", group = 1 : i64} : (tensor<1x2x32x64xf32>, tensor<5x2x6x10xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_5
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [1, 1], group = 1 : i64, kernel_shape = [6, 10], pads = [3, 5, 2, 4], strides = [1, 1]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x10xf32>, none) -> tensor<1x5x32x64xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x32x64xf32>
}

// -----

/// auto_pad set to VALID.

func @test_conv_no_bias_6(%arg0 : tensor<1x2x32x64xf32>, %arg1 : tensor<5x2x6x10xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "VALID", group = 1 : i64} : (tensor<1x2x32x64xf32>, tensor<5x2x6x10xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_6
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [1, 1], group = 1 : i64, kernel_shape = [6, 10], pads = [0, 0, 0, 0], strides = [1, 1]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x10xf32>, none) -> tensor<1x5x27x55xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x27x55xf32>
}

// -----

/// With strides attribute.

func @test_conv_no_bias_7(%arg0 : tensor<1x2x32x64xf32>, %arg1 : tensor<5x2x6x7xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", group = 1 : i64, strides = [2, 3]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_7
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [1, 1], group = 1 : i64, kernel_shape = [6, 7], pads = [0, 0, 0, 0], strides = [2, 3]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<1x5x14x20xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x14x20xf32>
}

// -----

/// auto_pad set to SAME_UPPER with strides attribute.
/// The auto_pad will pas as if stride is equal to 1.

func @test_conv_no_bias_8(%arg0 : tensor<1x2x32x64xf32>, %arg1 : tensor<5x2x6x7xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "SAME_UPPER", group = 1 : i64, strides = [2, 3]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_8
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [1, 1], group = 1 : i64, kernel_shape = [6, 7], pads = [2, 3, 2, 3], strides = [2, 3]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<1x5x16x22xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x16x22xf32>
}

// -----

/// dilations attribute.

func @test_conv_no_bias_9(%arg0 : tensor<1x2x32x64xf32>, %arg1 : tensor<5x2x6x7xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", group = 1 : i64, dilations = [2, 3]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_9
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [2, 3], group = 1 : i64, kernel_shape = [6, 7], pads = [0, 0, 0, 0], strides = [1, 1]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<1x5x22x46xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x22x46xf32>
}

// -----

/// dilations attribute with stride.

func @test_conv_no_bias_10(%arg0 : tensor<1x2x32x64xf32>, %arg1 : tensor<5x2x6x7xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", group = 1 : i64, dilations = [2, 3], strides = [2, 2]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_10
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [2, 3], group = 1 : i64, kernel_shape = [6, 7], pads = [0, 0, 0, 0], strides = [2, 2]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<1x5x11x23xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x11x23xf32>
}

// -----

/// dilations attribute with auto_pad set to SAME_UPPER.

func @test_conv_no_bias_11(%arg0 : tensor<1x2x32x64xf32>, %arg1 : tensor<5x2x6x7xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "SAME_UPPER", group = 1 : i64, dilations = [2, 3]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_no_bias_11
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %cst) {auto_pad = "NOTSET", dilations = [2, 3], group = 1 : i64, kernel_shape = [6, 7], pads = [5, 9, 5, 9], strides = [1, 1]} : (tensor<1x2x32x64xf32>, tensor<5x2x6x7xf32>, none) -> tensor<1x5x32x64xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x32x64xf32>
}
 
// -----

// Test convolution with bias input.

func @test_conv_12(%arg0 : tensor<1x2x32xf32>, %arg1 : tensor<5x2x6xf32>, %arg2 : tensor<5xf32>) -> tensor<*xf32> {
  %0 = "onnx.Conv"(%arg0, %arg1, %arg2) {auto_pad = "NOTSET", group = 1 : i64} : (tensor<1x2x32xf32>, tensor<5x2x6xf32>, tensor<5xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_conv_12
  // CHECK: [[RES_ATTR:%.+]] = "onnx.Conv"(%arg0, %arg1, %arg2) {auto_pad = "NOTSET", dilations = [1], group = 1 : i64, kernel_shape = [6], pads = [0, 0], strides = [1]} : (tensor<1x2x32xf32>, tensor<5x2x6xf32>, tensor<5xf32>) -> tensor<1x5x27xf32>
  // CHECK: return [[RES_ATTR]] : tensor<1x5x27xf32>
}

// -----

//===----------------------------------------------------------------------===//
/// Test shape inference for PadConstantValuePad.
//===----------------------------------------------------------------------===//

/// Test Pad_1
func @test_Pad_1(%arg0 : tensor<16x13xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %0 = "onnx.Pad"(%arg0, %cst, %cst) {constant_value = dense<0.000000e+00> : tensor<1xf32>, mode = "constant", pads = dense<[0, 2, 2, 4]> : tensor<4xi32>} : (tensor<16x13xf32>, none, none) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_Pad_1
  // CHECK-NEXT: [[NONE:%.+]] = constant unit
  // CHECK: [[RES:%.+]] = "onnx.Pad"(%arg0, [[NONE]], [[NONE]]) {constant_value = dense<0.000000e+00> : tensor<1xf32>, mode = "constant", pads = dense<[0, 2, 2, 4]> : tensor<4xi32>} : (tensor<16x13xf32>, none, none) -> tensor<18x19xf32>
  // CHECK: return [[RES]] : tensor<18x19xf32>
}


/// Test PadConstantValuePad_1
func @test_PadConstantValuePad_1(%arg0 : tensor<16x13xf32>) -> tensor<*xf32> {
  %0 = "onnx.PadConstantValuePad"(%arg0) {constant_value = 0.000000e+00 : f32, mode = "constant", pads = [0, 0, 2, 0]} : (tensor<16x13xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_PadConstantValuePad_1
  // CHECK: [[RES:%.+]] = "onnx.PadConstantValuePad"(%arg0) {constant_value = 0.000000e+00 : f32, mode = "constant", pads = [0, 0, 2, 0]} : (tensor<16x13xf32>) -> tensor<18x13xf32>
  // CHECK: return [[RES]] : tensor<18x13xf32>
}

// -----

/// Test PadConstantPad_1
func @test_PadConstantPad_1(%arg0 : tensor<16x13xf32>, %arg1 : tensor<*xf32>) -> tensor<*xf32> {
  %0 = "onnx.PadConstantPad"(%arg0, %arg1) {mode = "constant", pads = [0, 3, 2, 1]} : (tensor<16x13xf32>, tensor<*xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()
  // CHECK-LABEL: test_PadConstantPad_1
  // CHECK: [[RES:%.+]] = "onnx.PadConstantPad"(%arg0, %arg1) {mode = "constant", pads = [0, 3, 2, 1]} : (tensor<16x13xf32>, tensor<*xf32>) -> tensor<18x17xf32>
  // CHECK: return [[RES]] : tensor<18x17xf32>
}

// -----

/// Test PadConstantPad_2
func @test_PadConstantPad_2(%arg0 : tensor<16x?xf32>, %arg1 : tensor<*xf32>) -> tensor<*xf32> {
  %0 = "onnx.PadConstantPad"(%arg0, %arg1) {mode = "constant", pads = [0, 3, 2, 1]} : (tensor<16x?xf32>, tensor<*xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_PadConstantPad_2
  // CHECK: [[RES:%.+]] = "onnx.PadConstantPad"(%arg0, %arg1) {mode = "constant", pads = [0, 3, 2, 1]} : (tensor<16x?xf32>, tensor<*xf32>) -> tensor<18x?xf32>
  // CHECK: return [[RES]] : tensor<18x?xf32>
}

// -----

//===----------------------------------------------------------------------===//
/// Test for constant op.
//===----------------------------------------------------------------------===//

/// Test ConstantOp shape inference for 1-D dense tensor.
func @test_constant_dense_1d_value() -> tensor<*xf32> {
  %0 = "onnx.Constant"() {value = dense<[0.0, 1.0, 2.0]> : tensor<3xf32>} : () -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_constant_dense_1d_value
  // CHECK: [[RES:%.+]] = "onnx.Constant"() {value = dense<[0.000000e+00, 1.000000e+00, 2.000000e+00]> : tensor<3xf32>} : () -> tensor<3xf32>
  // CHECK: return [[RES]] : tensor<3xf32>
}

// -----

/// Test ConstantOp shape inference for 2-D dense tensor.
func @test_constant_dense_2d_value() -> tensor<*xf32> {
  %0 = "onnx.Constant"() {value = dense<[[0.0, 0.0], [1.0, 1.1], [2.0, 2.1]]> : tensor<3x2xf32>} : () -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_constant_dense_2d_value
  // CHECK: [[RES:%.+]] = "onnx.Constant"() {value = dense<{{\[}}[0.000000e+00, 0.000000e+00], [1.000000e+00, 1.100000e+00], [2.000000e+00, 2.100000e+00{{\]}}]> : tensor<3x2xf32>} : () -> tensor<3x2xf32>
  // CHECK: return [[RES]] : tensor<3x2xf32>
}

// -----

/// Test ConstantOp shape inference for 1-D sparse tensor.
func @test_constant_sparse_1d_value() -> tensor<*xf32> {
  %0 = "onnx.Constant"() {sparse_value = sparse<[[0]], [1.0]> : tensor<3xf32>} : () -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_constant_sparse_1d_value
  // CHECK: [[RES:%.+]] = "onnx.Constant"() {sparse_value = sparse<0, 1.000000e+00> : tensor<3xf32>} : () -> tensor<3xf32>
  // CHECK: return [[RES]] : tensor<3xf32>
}

// -----

/// Test ConstantOp shape inference for 2-D sparse tensor.
func @test_constant_sparse_2d_value() -> tensor<*xf32> {
  %0 = "onnx.Constant"() {sparse_value = sparse<[[0, 1]], [2.0]> : tensor<3x2xf32>} : () -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_constant_sparse_2d_value
  // CHECK: [[RES:%.+]] = "onnx.Constant"() {sparse_value = sparse<{{\[}}[0, 1{{\]}}], 2.000000e+00> : tensor<3x2xf32>} : () -> tensor<3x2xf32>
  // CHECK: return [[RES]] : tensor<3x2xf32>
}

// -----

/// Test the default behavior of Average Pool with no padding (pad are set but shoud be ignored)
func @test_default_averagepool(%arg0 : tensor<5x5x32x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.AveragePool"(%arg0) {auto_pad = "VALID", ceil_mode = 0, kernel_shape = [3,3], pads = [1, 1, 1, 1] } : (tensor<5x5x32x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_default_averagepool
  // CHECK: [[RES:%.+]] = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 0 : i64, kernel_shape = [3, 3], pads = [0, 0, 0, 0], strides = [1, 1]} : (tensor<5x5x32x32xf32>) -> tensor<5x5x30x30xf32>
  // CHECK: return [[RES]] : tensor<5x5x30x30xf32>
}

// -----

/// Test the default behavior of Average Pool with no padding (pad are not set, default to zero)
func @test_default_averagepool_defpad(%arg0 : tensor<5x5x32x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 0, kernel_shape = [3,3]} : (tensor<5x5x32x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_default_averagepool_defpad
  // CHECK: [[RES:%.+]] = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 0 : i64, kernel_shape = [3, 3], pads = [0, 0, 0, 0], strides = [1, 1]} : (tensor<5x5x32x32xf32>) -> tensor<5x5x30x30xf32>
  // CHECK: return [[RES]] : tensor<5x5x30x30xf32>
}

// -----

/// Test the default behavior of Average Pool with uniform padding
func @test_default_averagepool_pad(%arg0 : tensor<5x5x32x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 0, kernel_shape = [3,3], pads = [1, 1, 1, 1] } : (tensor<5x5x32x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_default_averagepool_pad
  // CHECK: [[RES:%.+]] = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 0 : i64, kernel_shape = [3, 3], pads = [1, 1, 1, 1], strides = [1, 1]} : (tensor<5x5x32x32xf32>) -> tensor<5x5x32x32xf32>
  // CHECK: return [[RES]] : tensor<5x5x32x32xf32>
}

// -----

/// Test the default behavior of Average Pool with non uniform padding
func @test_default_averagepool_pad_nonunif(%arg0 : tensor<5x5x32x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 0, kernel_shape = [5,3], pads = [2, 1, 1, 0] } : (tensor<5x5x32x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_default_averagepool_pad_nonunif
  // CHECK: [[RES:%.+]] = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 0 : i64, kernel_shape = [5, 3], pads = [2, 1, 1, 0], strides = [1, 1]} : (tensor<5x5x32x32xf32>) -> tensor<5x5x31x31xf32>
  // CHECK: return [[RES]] : tensor<5x5x31x31xf32>
}

// -----

/// Test the default behavior of Average Pool with non uniform padding
func @test_default_averagepool_strides(%arg0 : tensor<5x5x32x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 0, kernel_shape = [3,3], pads = [1, 1, 1, 1], strides = [2, 2] } : (tensor<5x5x32x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_default_averagepool_strides
  // CHECK: [[RES:%.+]] = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 0 : i64, kernel_shape = [3, 3], pads = [1, 1, 1, 1], strides = [2, 2]} : (tensor<5x5x32x32xf32>) -> tensor<5x5x16x16xf32>
  // CHECK: return [[RES]] : tensor<5x5x16x16xf32>
}

// -----

/// Test the default behavior of Average Pool with non uniform padding
func @test_default_averagepool_strides_nonunifpad(%arg0 : tensor<5x5x30x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 0, kernel_shape = [2,2], pads = [1, 0, 0, 0], strides = [2, 2] } : (tensor<5x5x30x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_default_averagepool_strides_nonunifpad
  // CHECK: [[RES:%.+]] = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 0 : i64, kernel_shape = [2, 2], pads = [1, 0, 0, 0], strides = [2, 2]} : (tensor<5x5x30x32xf32>) -> tensor<5x5x15x16xf32>
  // CHECK: return [[RES]] : tensor<5x5x15x16xf32>
}

// -----

/// Test the default behavior of Average Pool with non uniform padding
func @test_default_averagepool_strides_nonunifpad_ceil(%arg0 : tensor<5x5x30x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 1, kernel_shape = [2,2], pads = [1, 0, 0, 0], strides = [2, 2] } : (tensor<5x5x30x32xf32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_default_averagepool_strides_nonunifpad_ceil
  // CHECK: [[RES:%.+]] = "onnx.AveragePool"(%arg0) {auto_pad = "NOTSET", ceil_mode = 1 : i64, kernel_shape = [2, 2], pads = [1, 0, 0, 0], strides = [2, 2]} : (tensor<5x5x30x32xf32>) -> tensor<5x5x16x16xf32>
  // CHECK: return [[RES]] : tensor<5x5x16x16xf32>
}

// -----

//===----------------------------------------------------------------------===//
/// Test the reshape op inference when constants are present.
//===----------------------------------------------------------------------===//

func @test_reshape_dynamic(%arg0 : tensor<5x5x1x32xf32>, %arg1 : tensor<4xi32>) -> tensor<*xf32> {
  %0 = "onnx.Reshape"(%arg0, %arg1) : (tensor<5x5x1x32xf32>, tensor<4xi32>) -> tensor<*xf32>
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_reshape_dynamic
  // CHECK: [[RES:%.+]] = "onnx.Reshape"(%arg0, %arg1) : (tensor<5x5x1x32xf32>, tensor<4xi32>) -> tensor<?x?x?x?xf32>
  // CHECK: return [[RES]] : tensor<?x?x?x?xf32>
}

// -----

func @test_reshape_1(%arg0 : tensor<5x5x1x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.Constant"() {value = dense<[5, 5, 16, 2]> : tensor<4xi32> } : () -> tensor<4xi32>
  %1 = "onnx.Reshape"(%arg0, %0) : (tensor<5x5x1x32xf32>, tensor<4xi32>) -> tensor<*xf32>
  "std.return"(%1) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_reshape_1
  // CHECK: [[RES:%.+]] = "onnx.Reshape"(%arg0, %0) : (tensor<5x5x1x32xf32>, tensor<4xi32>) -> tensor<5x5x16x2xf32>
  // CHECK: return [[RES]] : tensor<5x5x16x2xf32>
}

// -----

func @test_reshape_2(%arg0 : tensor<5x5x1x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.Constant"() {value = dense<[-1, 16, 2]> : tensor<3xi32> } : () -> tensor<3xi32>
  %1 = "onnx.Reshape"(%arg0, %0) : (tensor<5x5x1x32xf32>, tensor<3xi32>) -> tensor<*xf32>
  "std.return"(%1) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_reshape_2
  // CHECK: [[RES:%.+]] = "onnx.Reshape"(%arg0, %0) : (tensor<5x5x1x32xf32>, tensor<3xi32>) -> tensor<25x16x2xf32>
  // CHECK: return [[RES]] : tensor<25x16x2xf32>
}

// -----

func @test_reshape_3(%arg0 : tensor<5x5x1x32xf32>) -> tensor<*xf32> {
  %0 = "onnx.Constant"() {value = dense<[-1, 0, 2]> : tensor<3xi32> } : () -> tensor<3xi32>
  %1 = "onnx.Reshape"(%arg0, %0) : (tensor<5x5x1x32xf32>, tensor<3xi32>) -> tensor<*xf32>
  "std.return"(%1) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_reshape_3
  // CHECK: [[RES:%.+]] = "onnx.Reshape"(%arg0, %0) : (tensor<5x5x1x32xf32>, tensor<3xi32>) -> tensor<80x5x2xf32>
  // CHECK: return [[RES]] : tensor<80x5x2xf32>
}

// -----

//===----------------------------------------------------------------------===//
/// Test the reshape op inference when concat are present.
//===----------------------------------------------------------------------===//

func @test_concat_1(%arg0 : tensor<5x5x1x32xf32>, %arg1 : tensor<5x5x3x32xf32>, %arg2 : tensor<5x5x5x32xf32>) -> tensor<*xf32> {
  %1 = "onnx.Concat"(%arg0, %arg1, %arg2) { axis = 2 } : (tensor<5x5x1x32xf32>, tensor<5x5x3x32xf32>, tensor<5x5x5x32xf32>)  -> tensor<*xf32>
  "std.return"(%1) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_concat_1
  // CHECK: [[RES:%.+]] = "onnx.Concat"(%arg0, %arg1, %arg2) {axis = 2 : i64} : (tensor<5x5x1x32xf32>, tensor<5x5x3x32xf32>, tensor<5x5x5x32xf32>) -> tensor<5x5x9x32xf32>
  // CHECK: return [[RES]] : tensor<5x5x9x32xf32>
}

// -----

func @test_concat_2(%arg0 : tensor<5x1x32xf32>, %arg1 : tensor<5x3x32xf32>, %arg2 : tensor<5x5x32xf32>) -> tensor<*xf32> {
  %1 = "onnx.Concat"(%arg0, %arg1, %arg2) { axis = 1 } : (tensor<5x1x32xf32>, tensor<5x3x32xf32>, tensor<5x5x32xf32>)  -> tensor<*xf32>
  "std.return"(%1) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_concat_2
  // CHECK: [[RES:%.+]] = "onnx.Concat"(%arg0, %arg1, %arg2) {axis = 1 : i64} : (tensor<5x1x32xf32>, tensor<5x3x32xf32>, tensor<5x5x32xf32>) -> tensor<5x9x32xf32>
  // CHECK: return [[RES]] : tensor<5x9x32xf32>
}

// -----

func @test_concat_3(%arg0 : tensor<5x1x32xf32>, %arg1 : tensor<5x3x32xf32>, %arg2 : tensor<5x5x32xf32>) -> tensor<*xf32> {
  %1 = "onnx.Concat"(%arg0, %arg1, %arg2) { axis = -2 } : (tensor<5x1x32xf32>, tensor<5x3x32xf32>, tensor<5x5x32xf32>)  -> tensor<*xf32>
  "std.return"(%1) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_concat_3
  // CHECK: [[RES:%.+]] = "onnx.Concat"(%arg0, %arg1, %arg2) {axis = 1 : i64} : (tensor<5x1x32xf32>, tensor<5x3x32xf32>, tensor<5x5x32xf32>) -> tensor<5x9x32xf32>
  // CHECK: return [[RES]] : tensor<5x9x32xf32>
}

// -----

func @test_rnn_all_results(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<*xf32>, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_rnn_all_results
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<4x1x3x3xf32>, tensor<1x3x3xf32>)
  // CHECK: return [[RES]] : tensor<1x3x3xf32>
}

// -----

func @test_rnn_no_results(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> () {
  %cst = constant unit
  %Y, %Y_h = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (none, none)
  return

  // CHECK-LABEL: test_rnn_no_results
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (none, none)
  // CHECK: return
}

// -----

func @test_rnn_missing_first_result(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (none, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_rnn_missing_first_result
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (none, tensor<1x3x3xf32>)
  // CHECK: return [[RES]] : tensor<1x3x3xf32>
}

// -----

func @test_rnn_missing_trailing_result(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> () {
  %cst = constant unit
  %Y, %Y_h = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<*xf32>, none)
  return

  // CHECK-LABEL: test_rnn_missing_trailing_result
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<4x1x3x3xf32>, none)
  // CHECK: return
}

// -----

func @test_rnn_all_results_no_hidden_size(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<*xf32>, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_rnn_all_results_no_hidden_size
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<4x1x3x3xf32>, tensor<1x3x3xf32>)
  // CHECK: return [[RES]] : tensor<1x3x3xf32>
}

// -----

func @test_rnn_all_results_unknown_dims(%arg0: tensor<?x?x?xf32>, %arg1: tensor<?x?x?xf32>, %arg2: tensor<?x?x?xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) : (tensor<?x?x?xf32>, tensor<?x?x?xf32>, tensor<?x?x?xf32>, none, none, none) -> (tensor<*xf32>, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_rnn_all_results_unknown_dims
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.RNN"(%arg0, %arg1, %arg2, %cst, %cst, %cst) : (tensor<?x?x?xf32>, tensor<?x?x?xf32>, tensor<?x?x?xf32>, none, none, none) -> (tensor<?x1x?x?xf32>, tensor<1x?x?xf32>)
  // CHECK: return [[RES]] : tensor<1x?x?xf32>
}

// -----

func @test_gru_all_results(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<*xf32>, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_gru_all_results
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<4x1x3x3xf32>, tensor<1x3x3xf32>)
  // CHECK: return [[RES]] : tensor<1x3x3xf32>
}

// -----

func @test_gru_no_results(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> () {
  %cst = constant unit
  %Y, %Y_h = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (none, none)
  return

  // CHECK-LABEL: test_gru_no_results
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (none, none)
  // CHECK: return
}

// -----

func @test_gru_missing_first_result(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (none, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_gru_missing_first_result
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (none, tensor<1x3x3xf32>)
  // CHECK: return [[RES]] : tensor<1x3x3xf32>
}

// -----

func @test_gru_missing_trailing_result(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> () {
  %cst = constant unit
  %Y, %Y_h = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<*xf32>, none)
  return

  // CHECK-LABEL: test_gru_missing_trailing_result
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<4x1x3x3xf32>, none)
  // CHECK: return
}

// -----

func @test_gru_all_results_no_hidden_size(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<*xf32>, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_gru_all_results_no_hidden_size
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none) -> (tensor<4x1x3x3xf32>, tensor<1x3x3xf32>)
  // CHECK: return [[RES]] : tensor<1x3x3xf32>
}

// -----

func @test_gru_all_results_unknown_dims(%arg0: tensor<?x?x?xf32>, %arg1: tensor<?x?x?xf32>, %arg2: tensor<?x?x?xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) : (tensor<?x?x?xf32>, tensor<?x?x?xf32>, tensor<?x?x?xf32>, none, none, none) -> (tensor<*xf32>, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_gru_all_results_unknown_dims
  // CHECK: %{{.*}}, [[RES:%.+]] = "onnx.GRU"(%arg0, %arg1, %arg2, %cst, %cst, %cst) : (tensor<?x?x?xf32>, tensor<?x?x?xf32>, tensor<?x?x?xf32>, none, none, none) -> (tensor<?x1x?x?xf32>, tensor<1x?x?xf32>)
  // CHECK: return [[RES]] : tensor<1x?x?xf32>
}

// -----

func @test_lstm_all_results(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h, %Y_c = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none, none, none) -> (tensor<*xf32>, tensor<*xf32>, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_lstm_all_results
  // CHECK: %{{.*}}, [[RES:%.+]], %{{.*}} = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none, none, none) -> (tensor<4x1x3x3xf32>, tensor<1x3x3xf32>, tensor<1x3x3xf32>)
  // CHECK: return [[RES]] : tensor<1x3x3xf32>
}

// -----

func @test_lstm_no_results(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> () {
  %cst = constant unit
  %Y, %Y_h, %Y_c = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none, none, none) -> (none, none, none)
  return

  // CHECK-LABEL: test_lstm_no_results
  // CHECK: %{{.*}}, [[RES:%.+]], %{{.*}} = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none, none, none) -> (none, none, none)
  // CHECK: return
}

// -----

func @test_lstm_missing_first_result(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h, %Y_c = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none, none, none) -> (none, tensor<*xf32>, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_lstm_missing_first_result
  // CHECK: %{{.*}}, [[RES:%.+]], %{{.*}} = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none, none, none) -> (none, tensor<1x3x3xf32>, tensor<1x3x3xf32>)
  // CHECK: return [[RES]] : tensor<1x3x3xf32>
}

// -----

func @test_lstm_missing_trailing_result(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h, %Y_c = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none, none, none) -> (tensor<*xf32>, tensor<*xf32>, none)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_lstm_missing_trailing_result
  // CHECK: %{{.*}}, [[RES:%.+]], %{{.*}} = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none, none, none) -> (tensor<4x1x3x3xf32>, tensor<1x3x3xf32>, none)
  // CHECK: return [[RES]] : tensor<1x3x3xf32>
}

// -----

func @test_lstm_all_results_no_hidden_size(%arg0: tensor<4x3x2xf32>, %arg1: tensor<1x12x2xf32>, %arg2: tensor<1x12x3xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h, %Y_c = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none, none, none) -> (tensor<*xf32>, tensor<*xf32>, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_lstm_all_results_no_hidden_size
  // CHECK: %{{.*}}, [[RES:%.+]], %{{.*}} = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) {hidden_size = 3 : i64} : (tensor<4x3x2xf32>, tensor<1x12x2xf32>, tensor<1x12x3xf32>, none, none, none, none, none) -> (tensor<4x1x3x3xf32>, tensor<1x3x3xf32>, tensor<1x3x3xf32>)
  // CHECK: return [[RES]] : tensor<1x3x3xf32>
}

// -----

func @test_lstm_all_results_unknown_dims(%arg0: tensor<?x?x?xf32>, %arg1: tensor<?x?x?xf32>, %arg2: tensor<?x?x?xf32>) -> tensor<*xf32> {
  %cst = constant unit
  %Y, %Y_h, %Y_c = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) : (tensor<?x?x?xf32>, tensor<?x?x?xf32>, tensor<?x?x?xf32>, none, none, none, none, none) -> (tensor<*xf32>, tensor<*xf32>, tensor<*xf32>)
  return %Y_h : tensor<*xf32>

  // CHECK-LABEL: test_lstm_all_results_unknown_dims
  // CHECK: %{{.*}}, [[RES:%.+]], %{{.*}} = "onnx.LSTM"(%arg0, %arg1, %arg2, %cst, %cst, %cst, %cst, %cst) : (tensor<?x?x?xf32>, tensor<?x?x?xf32>, tensor<?x?x?xf32>, none, none, none, none, none) -> (tensor<?x1x?x?xf32>, tensor<1x?x?xf32>, tensor<1x?x?xf32>)
  // CHECK: return [[RES]] : tensor<1x?x?xf32>
}

// -----

func @test_split_1(%arg0 : tensor<16x32x64xf32>) -> tensor<*xf32> {
  %0, %1 = "onnx.Split"(%arg0) { axis = 1 } : (tensor<16x32x64xf32>) -> (tensor<*xf32>, tensor<*xf32>)
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_split_1
  // CHECK: [[RES:%.+]]:2 = "onnx.Split"(%arg0) {axis = 1 : i64, split = [16, 16]} : (tensor<16x32x64xf32>) -> (tensor<16x16x64xf32>, tensor<16x16x64xf32>)
  // CHECK: return [[RES]]#0 : tensor<16x16x64xf32>
}

// -----

func @test_split_2(%arg0 : tensor<16x32x64xf32>) -> tensor<*xf32> {
  %0, %1 = "onnx.Split"(%arg0) { axis = -2 } : (tensor<16x32x64xf32>) -> (tensor<*xf32>, tensor<*xf32>)
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_split_2
  // CHECK: [[RES:%.+]]:2 = "onnx.Split"(%arg0) {axis = 1 : i64, split = [16, 16]} : (tensor<16x32x64xf32>) -> (tensor<16x16x64xf32>, tensor<16x16x64xf32>)
  // CHECK: return [[RES]]#0 : tensor<16x16x64xf32>
}

// -----

func @test_split_3(%arg0 : tensor<16x32x64xf32>) -> tensor<*xf32> {
  %0, %1 = "onnx.Split"(%arg0) { axis = 1, split = [2, 30]} : (tensor<16x32x64xf32>) -> (tensor<*xf32>, tensor<*xf32>)
  "std.return"(%0) : (tensor<*xf32>) -> ()

  // CHECK-LABEL: test_split_3
  // CHECK: [[RES:%.+]]:2 = "onnx.Split"(%arg0) {axis = 1 : i64, split = [2, 30]} : (tensor<16x32x64xf32>) -> (tensor<16x2x64xf32>, tensor<16x30x64xf32>)
  // CHECK: return [[RES]]#0 : tensor<16x2x64xf32>
}