| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| /*! |
| * \file tvm/te/tensor_intrin.h |
| * \brief Tensor intrinsic operations. |
| */ |
| #ifndef TVM_TE_TENSOR_INTRIN_H_ |
| #define TVM_TE_TENSOR_INTRIN_H_ |
| |
| #include <tvm/te/tensor.h> |
| #include <tvm/tir/buffer.h> |
| |
| #include <string> |
| |
| namespace tvm { |
| namespace te { |
| |
| /*! \brief Node to represent a Tensor intrinsic operator */ |
| class TensorIntrinNode : public Object { |
| public: |
| /*! \brief The name of the intrinsic */ |
| std::string name; |
| /*! \brief The operation this intrinsics is carrying out */ |
| Operation op; |
| /*! \brief List of inputs of operator, placeholder in postdfs order */ |
| Array<Tensor> inputs; |
| /*! |
| * \brief Symbolic buffers of each output/input tensor |
| * buffers[0:len(inputs)] are buffers of the inputs. |
| * buffers[len(inputs):] are buffers of each output. |
| * |
| * \note When a field in Buffer is Var, it means we can be flexible |
| * wrt that field and Var can occur in body. |
| * When it is a constant, it means we can only take data in that shape. |
| */ |
| Array<Buffer> buffers; |
| /*! \brief List of scalar variables, used in body. These placeholders |
| * will be bound to expressions passed in when the TensorIntrin is called |
| * from a TensorComputeOp. |
| */ |
| Array<Var> scalar_params; |
| /*! \brief The normal statement to execute the intrinsic */ |
| Stmt body; |
| /*! |
| * \brief Special statement for reduction op, can be None |
| * reset the value of output buffer to identity value. |
| */ |
| Stmt reduce_init; |
| /*! |
| * \brief Special statement for reduction op, can be None |
| * Reduce: do a reduction of current output buffer with the result. |
| */ |
| Stmt reduce_update; |
| /*! \brief constructor */ |
| TensorIntrinNode() {} |
| |
| void VisitAttrs(AttrVisitor* v) { |
| v->Visit("name", &name); |
| v->Visit("op", &op); |
| v->Visit("inputs", &inputs); |
| v->Visit("buffers", &buffers); |
| v->Visit("scalar_params", &scalar_params); |
| v->Visit("body", &body); |
| v->Visit("reduce_init", &reduce_init); |
| v->Visit("reduce_update", &reduce_update); |
| } |
| |
| static constexpr const char* _type_key = "TensorIntrin"; |
| TVM_DECLARE_FINAL_OBJECT_INFO(TensorIntrinNode, Object); |
| }; |
| |
| /*! |
| * \brief Managed reference to TensorIntrinNode |
| * \sa TensorIntrinNode |
| */ |
| class TensorIntrin : public ObjectRef { |
| public: |
| TVM_DLL TensorIntrin(std::string name, Operation op, Array<Tensor> inputs, Array<Buffer> buffers, |
| Array<Var> scalar_params, Stmt body, Stmt reduce_init, Stmt reduce_update); |
| |
| TVM_DEFINE_OBJECT_REF_METHODS(TensorIntrin, ObjectRef, TensorIntrinNode); |
| }; |
| |
| class TensorIntrinCallNode : public Object { |
| public: |
| /*! \brief the tensor intrinsic */ |
| TensorIntrin intrin; |
| /*! \brief input tensors of the intrinsic */ |
| Array<Tensor> tensors; |
| /*! \brief regions of input tensors */ |
| Array<Region> regions; |
| |
| /*! |
| * \brief IterVar on each reduction axis, if the |
| * intrin will use the reduce axis |
| */ |
| Array<IterVar> reduce_axis; |
| |
| /*! \brief scalar expression inputs */ |
| Array<PrimExpr> scalar_inputs; |
| |
| void VisitAttrs(AttrVisitor* v) { |
| v->Visit("intrin", &intrin); |
| v->Visit("tensors", &tensors); |
| v->Visit("regions", ®ions); |
| v->Visit("reduce_axis", &reduce_axis); |
| v->Visit("scalar_inputs", &scalar_inputs); |
| } |
| |
| static constexpr const char* _type_key = "TensorIntrinCall"; |
| TVM_DECLARE_FINAL_OBJECT_INFO(TensorIntrinCallNode, Object); |
| }; |
| |
| /*! |
| * \brief Managed reference to TensorIntrinCallNode |
| * \sa TensorIntrinCallNode |
| */ |
| class TensorIntrinCall : public ObjectRef { |
| public: |
| TVM_DLL TensorIntrinCall(TensorIntrin intrin, Array<Tensor> tensors, Array<Region> regions, |
| Array<IterVar> reduce_axis, Array<PrimExpr> scalar_inputs); |
| |
| TVM_DEFINE_OBJECT_REF_METHODS(TensorIntrinCall, ObjectRef, TensorIntrinCallNode); |
| }; |
| |
| } // namespace te |
| } // namespace tvm |
| #endif // TVM_TE_TENSOR_INTRIN_H_ |