| // RUN: mlir-hlo-opt %s -pass-pipeline='func(mhlo-test-optimize)' | FileCheck %s |
| |
| // CHECK-LABEL: @gather_is_slice_no_rank |
| func @gather_is_slice_no_rank(%arg0: tensor<2x1x2xi32>, %arg1: tensor<i64>) -> tensor<1x2xi32> { |
| // CHECK: [[CST:%.+]] = mhlo.constant dense<0> : tensor<i64> |
| // CHECK: [[SLICE:%.+]] = "mhlo.dynamic-slice"(%arg0, %arg1, [[CST]], [[CST]]) {slice_sizes = dense<[1, 1, 2]> : tensor<3xi64>} |
| // CHECK: [[RESHAPE:%.+]] = "mhlo.reshape"([[SLICE]]) |
| %res = "mhlo.gather"(%arg0, %arg1) { |
| dimension_numbers = { |
| collapsed_slice_dims = dense<0> : tensor<1xi64>, |
| index_vector_dim = 0 : i64, |
| offset_dims = dense<[0, 1]> : tensor<2xi64>, |
| start_index_map = dense<0> : tensor<1xi64> |
| }, |
| slice_sizes = dense<[1, 1, 2]> : tensor<3xi64> |
| } : (tensor<2x1x2xi32>, tensor<i64>) -> tensor<1x2xi32> |
| |
| // CHECK: return [[RESHAPE]] |
| return %res : tensor<1x2xi32> |
| } |
| |
| // CHECK-LABEL: @gather_is_slice |
| func @gather_is_slice(%arg0: tensor<2x1x2xi32>, %arg1: tensor<1xi64>) -> tensor<1x2xi32> { |
| // CHECK: [[CST:%.+]] = mhlo.constant dense<0> : tensor<i64> |
| // CHECK: [[RESHAPE:%.+]] = "mhlo.reshape"(%arg1) |
| // CHECK: [[SLICE:%.+]] = "mhlo.dynamic-slice"(%arg0, [[RESHAPE]], [[CST]], [[CST]]) {slice_sizes = dense<[1, 1, 2]> : tensor<3xi64>} |
| // CHECK: [[RES:%.+]] = "mhlo.reshape"([[SLICE]]) |
| |
| %res = "mhlo.gather"(%arg0, %arg1) { |
| dimension_numbers = { |
| collapsed_slice_dims = dense<0> : tensor<1xi64>, |
| index_vector_dim = 0 : i64, |
| offset_dims = dense<[0, 1]> : tensor<2xi64>, |
| start_index_map = dense<0> : tensor<1xi64> |
| }, |
| slice_sizes = dense<[1, 1, 2]> : tensor<3xi64> |
| } : (tensor<2x1x2xi32>, tensor<1xi64>) -> tensor<1x2xi32> |
| |
| // CHECK: return [[RES]] |
| return %res : tensor<1x2xi32> |
| } |
| |
| // CHECK-LABEL: @gather_is_slice_multiple_start_indices |
| func @gather_is_slice_multiple_start_indices(%arg0: tensor<2x1x2xi32>, %arg1: tensor<2xi64>) -> tensor<1x2xi32> { |
| // CHECK-DAG: [[CST:%.+]] = mhlo.constant dense<0> |
| // CHECK-DAG: [[SLICE1:%.+]] = "mhlo.slice"(%arg1) {limit_indices = dense<1> : tensor<1xi64>, start_indices = dense<0> : tensor<1xi64>, strides = dense<1> : tensor<1xi64>} |
| // CHECK-DAG: [[RESHAPE1:%.+]] = "mhlo.reshape"([[SLICE1]]) |
| // CHECK-DAG: [[SLICE2:%.+]] = "mhlo.slice"(%arg1) {limit_indices = dense<2> : tensor<1xi64>, start_indices = dense<1> : tensor<1xi64>, strides = dense<1> : tensor<1xi64>} |
| // CHECK-DAG: [[RESHAPE2:%.+]] = "mhlo.reshape"([[SLICE2]]) |
| // CHECK-DAG: [[DSLICE:%.+]] = "mhlo.dynamic-slice"(%arg0, [[RESHAPE1]], [[RESHAPE2]], [[CST]]) {slice_sizes = dense<[1, 1, 2]> : tensor<3xi64>} |
| // CHECK-DAG: [[RES:%.+]] = "mhlo.reshape"([[DSLICE]]) |
| %res = "mhlo.gather"(%arg0, %arg1) { |
| dimension_numbers = { |
| collapsed_slice_dims = dense<0> : tensor<1xi64>, |
| index_vector_dim = 0 : i64, |
| offset_dims = dense<[0, 1]> : tensor<2xi64>, |
| start_index_map = dense<0> : tensor<1xi64> |
| }, |
| slice_sizes = dense<[1, 1, 2]> : tensor<3xi64> |
| } : (tensor<2x1x2xi32>, tensor<2xi64>) -> tensor<1x2xi32> |
| |
| // CHECK: return [[RES]] |
| return %res : tensor<1x2xi32> |
| } |