wehub-resource-sync
96 lines
3.0 KiB
C++
96 lines
3.0 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/*!
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* \file topi/einsum.h
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* \brief Einstein summation op
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*/
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#ifndef TVM_TOPI_EINSUM_H_
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#define TVM_TOPI_EINSUM_H_
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#define LABELRANGE 128
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#define NPY_MAXDIMS 16
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#define NPY_MAXARGS 16
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#include <tvm/te/operation.h>
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#include <tvm/topi/detail/constant_utils.h>
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#include <tvm/topi/detail/ravel_unravel.h>
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#include <tvm/topi/detail/tensor_utils.h>
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#include <tvm/topi/tags.h>
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#include <algorithm>
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#include <bitset>
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#include <iterator>
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#include <string>
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#include <tuple>
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#include <unordered_set>
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#include <vector>
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namespace tvm {
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namespace topi {
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using namespace tvm::te;
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using namespace topi::detail;
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/*!
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* \brief Compute the shape of the output.
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* \param subscripts input subscripts.
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* \param operands operand tensors.
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*
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* \return the shape of the output.
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*/
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ffi::Array<PrimExpr> InferEinsumShape(const std::string& subscripts,
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const std::vector<ffi::Array<PrimExpr>>& operands);
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/*!
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* \brief Evaluates the Einstein summation convention on the operands.
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*
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* \param subscripts_str Specifies the subscripts for summation as comma separated list of
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* subscript labels.
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* \param inputs Arrays for the operation.
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* \param name The name of the operation.
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* \param tag The tag to mark the operation.
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*
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* \return The calculation based on the Einstein summation convention.
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*/
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Tensor einsum(const std::string& subscripts_str, const ffi::Array<Tensor> inputs,
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std::string name = "T_einsum", std::string tag = kEinsum);
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struct EinsumEquation {
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/*!
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* \brief Create EinsumEquation from a string.
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* The result will be converted to the explicit mode of Einsum if it is in implicit mode.
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* \return The created EinsumEquation.
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*/
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static EinsumEquation FromString(const std::string& equation);
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using Label = char;
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using Subscript = std::vector<Label>;
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// Special label value for ellipsis. The value is chosen to be less than any other letters so make
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// sorting easier.
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static constexpr Label kEllipsis = '\0';
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// The input subscripts for each operand of the Einsum operator.
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std::vector<Subscript> inputs;
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// The output subscript of the Einsum equation.
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Subscript output;
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};
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} // namespace topi
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} // namespace tvm
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#endif // TVM_TOPI_EINSUM_H_
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