| /* |
| * 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. |
| */ |
| |
| /*! |
| * \brief Placeholder op. |
| * \file placeholder_op.cc |
| */ |
| #include <tvm/runtime/registry.h> |
| #include <tvm/te/operation.h> |
| |
| namespace tvm { |
| namespace te { |
| |
| // PlaceholderOpNode |
| TVM_STATIC_IR_FUNCTOR(ReprPrinter, vtable) |
| .set_dispatch<PlaceholderOpNode>([](const ObjectRef& node, ReprPrinter* p) { |
| auto* op = static_cast<const PlaceholderOpNode*>(node.get()); |
| p->stream << "placeholder(" << op->name << ", " << op << ")"; |
| }); |
| |
| TVM_REGISTER_NODE_TYPE(PlaceholderOpNode); |
| |
| int PlaceholderOpNode::num_outputs() const { return 1; } |
| |
| Array<IterVar> PlaceholderOpNode::root_iter_vars() const { return {}; } |
| |
| DataType PlaceholderOpNode::output_dtype(size_t i) const { |
| CHECK_EQ(i, 0U); |
| return dtype; |
| } |
| |
| Array<PrimExpr> PlaceholderOpNode::output_shape(size_t i) const { |
| CHECK_EQ(i, 0U); |
| return shape; |
| } |
| |
| PlaceholderOp::PlaceholderOp(std::string name, Array<PrimExpr> shape, DataType dtype) { |
| auto n = make_object<PlaceholderOpNode>(); |
| n->name = name; |
| n->shape = shape; |
| n->dtype = dtype; |
| data_ = std::move(n); |
| } |
| |
| Tensor placeholder(Array<PrimExpr> shape, DataType dtype, std::string name) { |
| return PlaceholderOp(name, shape, dtype).output(0); |
| } |
| |
| TVM_REGISTER_GLOBAL("te.Placeholder") |
| .set_body_typed([](Array<PrimExpr> shape, DataType dtype, std::string name) { |
| return placeholder(shape, dtype, name); |
| }); |
| |
| Array<Tensor> PlaceholderOpNode::InputTensors() const { return {}; } |
| |
| Operation PlaceholderOpNode::ReplaceInputs(const Operation& self, |
| const std::unordered_map<Tensor, Tensor>& rmap) const { |
| return self; |
| } |
| |
| void PlaceholderOpNode::PropBoundToInputs( |
| const Operation& self, arith::Analyzer* analyzer, |
| const std::unordered_map<const VarNode*, IntSet>& dom_map, |
| std::unordered_map<Tensor, TensorDom>* out_dom_map) const {} |
| |
| void PlaceholderOpNode::GatherBound(const Operation& self, |
| const std::unordered_map<Tensor, TensorDom>& tensor_dom, |
| std::unordered_map<IterVar, Range>* out_dom_map) const {} |
| |
| Stmt PlaceholderOpNode::BuildRealize(const Stage& stage, |
| const std::unordered_map<IterVar, Range>& realize_map, |
| const Stmt& body) const { |
| return body; |
| } |
| |
| Stmt PlaceholderOpNode::BuildProvide(const Stage& stage, |
| const std::unordered_map<IterVar, Range>& dom_map, |
| bool debug_keep_trivial_loop) const { |
| return Stmt(); |
| } |
| } // namespace te |
| } // namespace tvm |