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# Copyright (C) 2020 Arm Limited or its affiliates. All rights reserved.
#
# SPDX-License-Identifier: Apache-2.0
#
# Licensed under the Apache License, Version 2.0 (the License); you may
# not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an AS IS BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Description:
# Unit tests for support_operators
from ethosu.vela.data_type import DataType
from ethosu.vela.supported_operators import SupportedOperators
from ethosu.vela.tensor import create_const_tensor
from ethosu.vela.tensor import Tensor
from ethosu.vela.test import testutil
support = SupportedOperators()
def create_strided_slice_op(in_shape, out_shape, start_offsets, end_offsets):
in0 = Tensor(in_shape, DataType.uint8, "in")
in1 = create_const_tensor("begin", [len(start_offsets)], DataType.uint8, start_offsets)
in2 = create_const_tensor("end", [len(end_offsets)], DataType.uint8, end_offsets)
in3 = create_const_tensor("strides", [len(end_offsets)], DataType.uint8, len(end_offsets) * [1])
out = Tensor(out_shape, DataType.uint8, "out")
attrs = {"ellipsis_mask": 0, "new_axis_mask": 0, "shrink_axis_mask": 0, "begin_mask": 0, "end_mask": 0}
return testutil.create_op("StridedSlice", [in0, in1, in2, in3], out, attrs=attrs)
def create_strided_slice():
# Creates a valid strided slice operator with some valid inputs/outputs
op = create_strided_slice_op([1, 10, 10, 10], [1, 5, 5, 10], [127, 2, 2, 0], [0, 7, -3, 0])
op.attrs["begin_mask"] = 1
op.attrs["end_mask"] = 9
assert support.is_operator_supported(op)
return op
def test_strided_slice():
# Tests support for StridedSlice operator
op = create_strided_slice()
# Setting one of new_axis_mask/shrink_axis_mask to non-zero is ok
op.attrs["new_axis_mask"] = 2
assert support.is_operator_supported(op)
op = create_strided_slice()
op.attrs["shrink_axis_mask"] = 3
assert support.is_operator_supported(op)
# But setting both to non-zero is not supported
op.attrs["new_axis_mask"] = 2
assert not support.is_operator_supported(op)
# begin values must not be None
op.inputs[1].values = None
assert not support.is_operator_supported(op)
# Unsupported strides
op = create_strided_slice()
op.inputs[3].values = [1, 1, 2, 1]
assert not support.is_operator_supported(op)
# Wrong number of input tensors
op = create_strided_slice()
op.add_input_tensor(op.inputs[0].clone())
assert not support.is_operator_supported(op)
# Unsupported ellipsis mask
op = create_strided_slice()
op.attrs["ellipsis_mask"] = 1
assert not support.is_operator_supported(op)
# Examples where end offset <= begin offset
op = create_strided_slice()
op.inputs[1].values = [0, 7, 2, 0]
assert not support.is_operator_supported(op)
op = create_strided_slice()
op.inputs[2].values = [0, 7, 2, 0]
assert not support.is_operator_supported(op)
op = create_strided_slice()
op.attrs["begin_mask"] = 0
assert not support.is_operator_supported(op)
op = create_strided_slice()
op.attrs["end_mask"] = 0
assert not support.is_operator_supported(op)
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