1/**
2 * Copyright (c) Glow Contributors. See CONTRIBUTORS file.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "glow/Graph/Hook.h"
18
19#include "glow/Graph/Graph.h"
20#include "glow/Graph/Node.h"
21
22#include "llvm/ADT/DenseMap.h"
23#include "llvm/Support/FormatVariadic.h"
24
25using namespace glow;
26
27HookedFunction glow::hookNode(Function *F, Node *node, bool hookInputs) {
28 NodeMap currToNew;
29 auto *newF = F->getParent()->createFunction("hook");
30 Node *hooked = recursiveClone(newF, node, currToNew);
31
32 std::list<SaveNode *> output_saves;
33 std::list<Placeholder *> output_placeholders;
34
35 std::list<SaveNode *> input_saves;
36 std::list<Placeholder *> input_placeholders;
37
38 for (unsigned i = 0; i < hooked->getNumResults(); ++i) {
39 auto *save =
40 newF->createSave(hooked->getOutputName(i), hooked->getNthResult(i));
41 output_saves.emplace_back(save);
42 output_placeholders.emplace_back(save->getPlaceholder());
43 }
44
45 if (hookInputs) {
46 for (unsigned i = 0; i < hooked->getNumInputs(); ++i) {
47 auto *save =
48 newF->createSave(hooked->getInputName(i), hooked->getNthInput(i));
49 input_saves.emplace_back(save);
50 input_placeholders.emplace_back(save->getPlaceholder());
51 }
52 }
53 return HookedFunction{newF, std::move(output_saves),
54 std::move(output_placeholders), std::move(input_saves),
55 std::move(input_placeholders)};
56}
57
58HookedFunction glow::hookNode(Function *F, llvm::StringRef nodeName,
59 bool hookInputs) {
60 auto *node = F->getNodeByName(nodeName);
61 return hookNode(F, node, hookInputs);
62}
63