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
|
#include <torch/csrc/jit/tensorexpr/unique_name_manager.h>
#include <c10/util/string_utils.h>
#include <torch/csrc/jit/tensorexpr/ir.h>
#include <cctype>
namespace torch {
namespace jit {
namespace tensorexpr {
const std::string& UniqueNameManager::get_unique_name(VarPtr v) {
// Find if we have already encountered this variable.
auto iter = unique_name_mapping_.find(v);
if (iter != unique_name_mapping_.end()) {
return iter->second;
}
// First use the name_hint as a prefix to check if there is another name
// with the same prefix.
std::string name_hint = v->name_hint();
if (name_hint == "") {
name_hint = "v";
} else if (std::isdigit(name_hint[0])) {
name_hint = "v" + name_hint;
}
int& count = unique_name_count_[name_hint];
while (true) {
// Even if with a new count, this name might already be used. For example
// ("x", 1) could collidewith ("x_1", 0)
int count_v = count++;
std::string unique_name = name_hint;
if (count_v > 0) {
unique_name += "_" + c10::to_string(count_v);
}
if (all_unique_names_.count(unique_name) == 0) {
all_unique_names_.insert(unique_name);
auto result = unique_name_mapping_.insert(std::make_pair(v, unique_name));
return result.first->second;
}
}
}
const std::string& UniqueNameManager::get_unique_name(const VarHandle& v) {
return get_unique_name(v.node());
}
} // namespace tensorexpr
} // namespace jit
} // namespace torch
|
