1/*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20/*!
21 * \file src/relay/collage/custom_cost_estimator.cc
22 * \brief A custom CostEstimator to support alternative cost functions.
23 */
24
25#include "./custom_cost_estimator.h"
26
27#include <tvm/relay/expr_functor.h>
28
29namespace tvm {
30namespace relay {
31namespace collage {
32
33TVM_REGISTER_OBJECT_TYPE(CustomCostEstimatorNode);
34
35Cost CustomCostEstimatorNode::Estimate(const IRModule& mod, const Target& target) const {
36 static const runtime::PackedFunc* estimate_seconds = runtime::Registry::Get(py_fn_estimator_);
37 ICHECK(estimate_seconds);
38 const double value = (*estimate_seconds)(mod, target);
39 if (std::isinf(value)) {
40 return Cost::Invalid();
41 } else if (std::isnan(value)) {
42 return Cost::Unknown();
43 } else {
44 return Cost::Value(value);
45 }
46}
47
48CustomCostEstimator::CustomCostEstimator(String py_fn_estimator) {
49 auto node = make_object<CustomCostEstimatorNode>();
50 node->py_fn_estimator_ = std::move(py_fn_estimator);
51 data_ = std::move(node);
52}
53
54TVM_REGISTER_GLOBAL("relay.collage.CustomCostEstimator").set_body_typed([](String py_fn_estimator) {
55 return CustomCostEstimator(std::move(py_fn_estimator));
56});
57
58} // namespace collage
59} // namespace relay
60} // namespace tvm
61