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- # Copyright 2020 Huawei Technologies Co., Ltd
- #
- # 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
- #
- # http://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.
- # ============================================================================
-
- """array_ops"""
-
- from .. import operations as P
- from ..operations import _grad_ops as G
- from ..operations import _inner_ops as inner
- from ..composite.multitype_ops.zeros_like_impl import zeros_like
- from .grad_base import bprop_getters
-
-
- @bprop_getters.register(inner.StridedSliceAICPU)
- def get_bprop_strided_slice_aicpu(self):
- """Generate bprop for StridedSlice"""
- shape_op = P.Shape()
- input_grad = G.StridedSliceGradAICPU(self.begin_mask,
- self.end_mask,
- self.ellipsis_mask,
- self.new_axis_mask,
- self.shrink_axis_mask)
-
- def bprop(x, begin, end, strides, out, dout):
- dx = input_grad(dout, shape_op(x), begin, end, strides)
- return dx, zeros_like(begin), zeros_like(end), zeros_like(strides)
-
- return bprop
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