blob: fa84c005cf28db4b70a61cc74a0320c989ba207f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
* Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
*
* Licensed 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.
*/
#include "DuplicatedObjectReduction.h"
#include "CodeIndex.h"
#include "IRUtils.h"
#include <set>
namespace
{
/**
* @brief Collect feature objects in coco IR
*/
std::set<coco::FeatureObject *> features(const coco::Module *m)
{
std::set<coco::FeatureObject *> res;
for (uint32_t n = 0; n < m->entity()->object()->size(); ++n)
{
if (auto feature = m->entity()->object()->at(n)->asFeature())
{
res.insert(feature);
}
}
return res;
}
std::set<coco::FeatureObject *> candidates(const coco::FeatureObject *src)
{
std::set<coco::FeatureObject *> res;
for (auto consumer : coco::consumers(src))
{
if (auto copy = consumer->loc()->asCopy())
{
auto dst = copy->into()->asFeature();
assert(dst != nullptr);
if (dst->layout()->id() == coco::FeatureLayouts::BHWC::uid())
{
res.insert(dst);
}
}
}
return res;
}
CodeIndex code_index(coco::Object::Producer *p)
{
if (auto ins = p->loc())
{
return ::code_index(ins);
}
return CodeIndex{};
}
} // namespace
namespace enco
{
void reduce_duplicated_object(enco::Code *code)
{
auto m = code->module();
for (const auto &src : features(m))
{
auto copied = candidates(src);
if (copied.size() <= 1)
{
continue;
}
// Find the dominator
coco::FeatureObject *dominator = nullptr;
for (auto candidate : copied)
{
if (dominator == nullptr)
{
dominator = candidate;
}
else if (code_index(coco::producer(candidate)) < code_index(coco::producer(dominator)))
{
dominator = candidate;
}
}
// Replace all the occurunce of dominated objects with its dominator
copied.erase(dominator);
for (auto dominatee : copied)
{
subst(dominatee, dominator);
}
}
}
} // namespace enco
|
