llvm/mlir/test/Integration/Dialect/Linalg/CPU/test-collapse-tensor.mlir

// RUN: mlir-opt %s \
// RUN: -one-shot-bufferize="bufferize-function-boundaries" \
// RUN: -buffer-deallocation-pipeline -convert-bufferization-to-memref \
// RUN: -convert-scf-to-cf -expand-strided-metadata -lower-affine -convert-cf-to-llvm -convert-arith-to-llvm \
// RUN: -finalize-memref-to-llvm -convert-func-to-llvm -reconcile-unrealized-casts | \
// RUN: mlir-cpu-runner -e main -entry-point-result=void \
// RUN:   -shared-libs=%mlir_runner_utils,%mlir_c_runner_utils \
// RUN: | FileCheck %s


func.func @main() {
  %const = arith.constant dense<[[[[-3.9058,0.9072],[-2.9470,-2.2055],[18.3946,8.2997]],[[3.4700,5.9006],[-17.2267,4.9777],[1.0450,-0.8201]]],[[[17.6996,-11.1763],[26.7775,-3.8823],[-4.2492,-5.8966]],[[2.1259,13.1794],[-10.7136,0.8428],[16.4233,9.4589]]]]> : tensor<2x2x3x2xf32>
  %dynamic = tensor.cast %const: tensor<2x2x3x2xf32> to tensor<2x?x?x?xf32>
  %collapsed = call @collapse_dynamic_shape(%dynamic) : (tensor<2x?x?x?xf32>) -> (tensor<2x?x?xf32>)
  %unranked = tensor.cast %collapsed: tensor<2x?x?xf32> to tensor<*xf32>
  call @printMemrefF32(%unranked) : (tensor<*xf32>) -> ()
  //      CHECK: Unranked Memref base@ = {{0x[-9a-f]*}}
  // CHECK-SAME: rank = 3 offset = 0 sizes = [2, 6, 2] strides = [12, 2, 1] data =
  // CHECK-NEXT{LITERAL}: [[[-3.9058,    0.9072],
  // CHECK-NEXT: [-2.947,    -2.2055],
  // CHECK-NEXT: [18.3946,    8.2997],
  // CHECK-NEXT: [3.47,    5.9006],
  // CHECK-NEXT: [-17.2267,    4.9777],
  // CHECK-NEXT: [1.045,    -0.8201]],
  // CHECK-NEXT{LITERAL}: [[17.6996,    -11.1763],
  // CHECK-NEXT: [26.7775,    -3.8823],
  // CHECK-NEXT: [-4.2492,    -5.8966],
  // CHECK-NEXT: [2.1259,    13.1794],
  // CHECK-NEXT: [-10.7136,    0.8428],
  // CHECK-NEXT: [16.4233,    9.4589]]]
  return
}

func.func private @printMemrefF32(%ptr : tensor<*xf32>)

func.func @collapse_dynamic_shape(%arg0 : tensor<2x?x?x?xf32>) -> tensor<2x?x?xf32> {
  %0 = tensor.collapse_shape %arg0 [[0], [1, 2], [3]]: tensor<2x?x?x?xf32> into tensor<2x?x?xf32>
  return %0 : tensor<2x?x?xf32>
}