wehub-resource-sync
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <vector>
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namespace phi {
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inline bool is_strided_slice_special_case(const std::vector<int64_t>& xshape,
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const std::vector<int64_t>& starts,
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const std::vector<int64_t>& ends,
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const std::vector<int64_t>& strides) {
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// starts match {0, 0, ..., 0, 0} or {0, 0, ..., 0, 1}
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for (size_t i = 0; i < starts.size() - 1; i++) {
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if (starts[i] != 0) {
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return false;
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}
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}
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if (starts.back() != 0 && starts.back() != 1) {
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return false;
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}
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// xshape match ends
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if (xshape != ends) {
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return false;
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}
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// strides match {1, 1, ..., 1, 2}
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for (size_t i = 0; i < strides.size() - 1; i++) {
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if (strides[i] != 1) {
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return false;
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}
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}
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if (strides.back() != 2) {
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return false;
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}
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// last dim of xshape is even number
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if (xshape.back() % 2 != 0) {
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return false;
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}
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return true;
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}
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} // namespace phi
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