/* * 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 auto_inline_elem_wise.cc */ #include <tvm/runtime/registry.h> #include <tvm/te/operation.h> #include <tvm/te/schedule_pass.h> #include <tvm/tir/expr_functor.h> namespace tvm { namespace te { using namespace tir; class ElemWiseDetector : public tir::ExprVisitor { public: explicit ElemWiseDetector(Array<IterVar> axis) : axis_(axis) {} void VisitExpr(const PrimExpr& e) final { if (!is_elem_wise_) return; ExprVisitor::VisitExpr(e); } void VisitExpr_(const ProducerLoadNode* op) final { Array<PrimExpr> indices = op->indices; if (axis_.size() != indices.size()) { is_elem_wise_ = false; return; } for (size_t i = 0; i < axis_.size(); ++i) { if (!indices[i].same_as(axis_[i]->var)) { is_elem_wise_ = false; return; } } ExprVisitor::VisitExpr_(op); } bool is_elem_wise_{true}; private: Array<IterVar> axis_; }; bool IsElemWise(const Operation& op) { if (const ComputeOpNode* compute = op.as<ComputeOpNode>()) { ElemWiseDetector v = ElemWiseDetector(compute->axis); for (auto& e : compute->body) v(e); return v.is_elem_wise_; } return false; } void AutoInlineElemWise(Schedule sch) { for (Stage s : sch->stages) { if (!s.is_scheduled() && IsElemWise(s->op) && !s->is_output) { s.compute_inline(); } } } bool IsBroadcast(const Operation& op) { if (const ComputeOpNode* compute = op.as<ComputeOpNode>()) { if (compute->reduce_axis.size()) { return false; } constexpr auto kBroadcast = "broadcast"; // broadcast op in topi has tag `broadcast` if (op->tag == kBroadcast) { return true; } } return false; } void AutoInlineBroadcast(Schedule sch) { for (Stage s : sch->stages) { if (!s.is_scheduled() && IsBroadcast(s->op) && !s->is_output) { s.compute_inline(); } } } bool IsInjective(const Operation& op) { if (const ComputeOpNode* compute = op.as<ComputeOpNode>()) { return compute->reduce_axis.size() == 0; } return false; } void AutoInlineInjective(Schedule sch) { for (Stage s : sch->stages) { if (!s.is_scheduled() && IsInjective(s->op) && !s->is_output) { s.compute_inline(); } } } TVM_REGISTER_GLOBAL("schedule.AutoInlineElemWise").set_body_typed(AutoInlineElemWise); TVM_REGISTER_GLOBAL("schedule.AutoInlineBroadcast").set_body_typed(AutoInlineBroadcast); TVM_REGISTER_GLOBAL("schedule.AutoInlineInjective").set_body_typed(AutoInlineInjective); } // namespace te } // namespace tvm