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[MHLO:Linalg] Add support for lowering dynamic-slice on unsigned ints 

PiperOrigin-RevId: 371979004
This commit is contained in:
Geoffrey Martin-Noble 2021-05-04 13:07:15 -07:00 committed by TensorFlow MLIR Team
parent fdae82aac7
commit 5a60793b31
2 changed files with 37 additions and 4 deletions
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10
lib/Dialect/mhlo/transforms/legalize_to_linalg.cc
View File

@ -1290,9 +1290,13 @@ class DynamicSliceConverter : public OpConversionPattern<mhlo::DynamicSliceOp> {
int64_t rank = arg_type.getRank();
SmallVector<OpFoldResult, 3> strides(rank, rewriter.getI64IntegerAttr(1));
rewriter.replaceOpWithNewOp<SubTensorOp>(
dynamic_slice_op, dynamic_slice_op.getType().cast<RankedTensorType>(),
adaptor.operand(), start_indices, sizes, strides);
auto result_type =
this->typeConverter->convertType(dynamic_slice_op.getType())
.cast<RankedTensorType>();
rewriter.replaceOpWithNewOp<SubTensorOp>(dynamic_slice_op, result_type,
adaptor.operand(), start_indices,
sizes, strides);
return success();
}
};

31
tests/hlo-legalize-to-linalg.mlir
View File

@ -1596,7 +1596,7 @@ func @dynamic_slice(%arg: tensor<3x4xf32>, %start1: tensor<i64>, %start2: tensor
} : (tensor<3x4xf32>, tensor<i64>, tensor<i64>) -> tensor<1x4xf32>
return %0 : tensor<1x4xf32>
}
// CHECK-LABEL: func @dynamic_slice
// CHECK-LABEL: func @dynamic_slice(
// CHECK-SAME: %[[ARG0:[a-zA-Z0-9_]*]]
// CHECK-SAME: %[[ARG1:[a-zA-Z0-9_]*]]
// CHECK-SAME: %[[ARG2:[a-zA-Z0-9_]*]]
@ -1619,6 +1619,35 @@ func @dynamic_slice(%arg: tensor<3x4xf32>, %start1: tensor<i64>, %start2: tensor
// -----
func @dynamic_slice_unsigned(%arg: tensor<3x4xui32>, %start1: tensor<i64>, %start2: tensor<i64>) -> tensor<1x4xui32> {
%0 = "mhlo.dynamic-slice"(%arg, %start1, %start2) {
slice_sizes = dense<[1, 4]> : tensor<2xi64>
} : (tensor<3x4xui32>, tensor<i64>, tensor<i64>) -> tensor<1x4xui32>
return %0 : tensor<1x4xui32>
}
// CHECK-LABEL: func @dynamic_slice_unsigned(
// CHECK-SAME: %[[ARG0:[a-zA-Z0-9_]*]]
// CHECK-SAME: %[[ARG1:[a-zA-Z0-9_]*]]
// CHECK-SAME: %[[ARG2:[a-zA-Z0-9_]*]]
// CHECK: %[[SIGNLESS_ARG0:.*]] = unrealized_conversion_cast %[[ARG0]] : tensor<3x4xui32> to tensor<3x4xi32>
// CHECK: %[[C0:.*]] = constant 0 : i64
// CHECK: %[[SCALAR1:.*]] = tensor.extract %[[ARG1]][] : tensor<i64>
// CHECK: %[[UB1:.*]] = constant 2 : i64
// CHECK: %[[COND1:.*]] = cmpi slt, %[[SCALAR1]], %[[UB1]] : i64
// CHECK: %[[T1:.*]] = select %[[COND1]], %[[SCALAR1]], %[[UB1]] : i64
// CHECK: %[[COND2:.*]] = cmpi sgt, %[[T1]], %[[C0]] : i64
// CHECK: %[[CLAMPED1:.*]] = select %[[COND2]], %[[T1]], %[[C0]] : i64
// CHECK: %[[START1:.*]] = index_cast %[[CLAMPED1]] : i64 to index
// CHECK: %[[SCALAR2:.*]] = tensor.extract %[[ARG2]][] : tensor<i64>
// CHECK: %[[UB2:.*]] = constant 0 : i64
// CHECK: %[[COND3:.*]] = cmpi slt, %[[SCALAR2]], %[[UB2]] : i64
// CHECK: %[[T2:.*]] = select %[[COND3]], %[[SCALAR2]], %[[UB2]] : i64
// CHECK: %[[COND4:.*]] = cmpi sgt, %[[T2]], %[[C0]] : i64
// CHECK: %[[CLAMPED2:.*]] = select %[[COND4]], %[[T2]], %[[C0]] : i64
// CHECK: %[[START2:.*]] = index_cast %[[CLAMPED2]] : i64 to index
// CHECK: subtensor %[[SIGNLESS_ARG0]][%[[START1]], %[[START2]]] [1, 4] [1, 1]
func @pad_cst(%arg0: tensor<12x4xf32>) -> tensor<18x12xf32> {
%0 = constant dense<0.0> : tensor<f32>
%1 = "mhlo.pad"(%arg0, %0) {