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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Interactive yul optimizer
*/
#include <libdevcore/CommonIO.h>
#include <liblangutil/ErrorReporter.h>
#include <liblangutil/Scanner.h>
#include <libyul/AsmAnalysis.h>
#include <libyul/AsmAnalysisInfo.h>
#include <libsolidity/parsing/Parser.h>
#include <libyul/AsmData.h>
#include <libyul/AsmParser.h>
#include <libyul/AsmPrinter.h>
#include <liblangutil/SourceReferenceFormatter.h>
#include <libyul/optimiser/BlockFlattener.h>
#include <libyul/optimiser/Disambiguator.h>
#include <libyul/optimiser/CommonSubexpressionEliminator.h>
#include <libyul/optimiser/NameCollector.h>
#include <libyul/optimiser/ExpressionSplitter.h>
#include <libyul/optimiser/FunctionGrouper.h>
#include <libyul/optimiser/FunctionHoister.h>
#include <libyul/optimiser/ExpressionInliner.h>
#include <libyul/optimiser/FullInliner.h>
#include <libyul/optimiser/ForLoopInitRewriter.h>
#include <libyul/optimiser/MainFunction.h>
#include <libyul/optimiser/Rematerialiser.h>
#include <libyul/optimiser/ExpressionSimplifier.h>
#include <libyul/optimiser/UnusedPruner.h>
#include <libyul/optimiser/ExpressionJoiner.h>
#include <libyul/optimiser/RedundantAssignEliminator.h>
#include <libyul/optimiser/SSATransform.h>
#include <libyul/optimiser/StructuralSimplifier.h>
#include <libyul/optimiser/VarDeclPropagator.h>
#include <libyul/backends/evm/EVMDialect.h>
#include <libdevcore/JSON.h>
#include <boost/program_options.hpp>
#include <string>
#include <sstream>
#include <iostream>
using namespace std;
using namespace dev;
using namespace langutil;
using namespace dev::solidity;
using namespace yul;
namespace po = boost::program_options;
class YulOpti
{
public:
void printErrors()
{
SourceReferenceFormatter formatter(cout);
for (auto const& error: m_errors)
formatter.printExceptionInformation(
*error,
(error->type() == Error::Type::Warning) ? "Warning" : "Error"
);
}
bool parse(string const& _input)
{
ErrorReporter errorReporter(m_errors);
shared_ptr<Scanner> scanner = make_shared<Scanner>(CharStream(_input, ""));
m_ast = yul::Parser(errorReporter, yul::EVMDialect::strictAssemblyForEVM()).parse(scanner, false);
if (!m_ast || !errorReporter.errors().empty())
{
cout << "Error parsing source." << endl;
printErrors();
return false;
}
m_analysisInfo = make_shared<yul::AsmAnalysisInfo>();
AsmAnalyzer analyzer(
*m_analysisInfo,
errorReporter,
EVMVersion::byzantium(),
langutil::Error::Type::SyntaxError,
EVMDialect::strictAssemblyForEVM()
);
if (!analyzer.analyze(*m_ast) || !errorReporter.errors().empty())
{
cout << "Error analyzing source." << endl;
printErrors();
return false;
}
return true;
}
void runInteractive(string source)
{
bool disambiguated = false;
while (true)
{
cout << "----------------------" << endl;
cout << source << endl;
if (!parse(source))
return;
if (!disambiguated)
{
*m_ast = boost::get<yul::Block>(Disambiguator(*m_analysisInfo)(*m_ast));
m_analysisInfo.reset();
m_nameDispenser = make_shared<NameDispenser>(*m_ast);
disambiguated = true;
}
cout << "(q)quit/(f)flatten/(c)se/propagate var(d)ecls/(x)plit/(j)oin/(g)rouper/(h)oister/" << endl;
cout << " (e)xpr inline/(i)nline/(s)implify/(u)nusedprune/ss(a) transform/" << endl;
cout << " (r)edundant assign elim./re(m)aterializer/f(o)r-loop-pre-rewriter/" << endl;
cout << " s(t)ructural simplifier? " << endl;
cout.flush();
int option = readStandardInputChar();
cout << ' ' << char(option) << endl;
switch (option)
{
case 'q':
return;
case 'f':
BlockFlattener{}(*m_ast);
break;
case 'o':
ForLoopInitRewriter{}(*m_ast);
break;
case 'c':
(CommonSubexpressionEliminator{})(*m_ast);
break;
case 'd':
(VarDeclPropagator{})(*m_ast);
break;
case 'x':
ExpressionSplitter{*m_nameDispenser}(*m_ast);
break;
case 'j':
ExpressionJoiner::run(*m_ast);
break;
case 'g':
(FunctionGrouper{})(*m_ast);
break;
case 'h':
(FunctionHoister{})(*m_ast);
break;
case 'e':
ExpressionInliner{*m_ast}.run();
break;
case 'i':
FullInliner(*m_ast, *m_nameDispenser).run();
break;
case 's':
ExpressionSimplifier::run(*m_ast);
break;
case 't':
(StructuralSimplifier{})(*m_ast);
break;
case 'u':
UnusedPruner::runUntilStabilised(*m_ast);
break;
case 'a':
SSATransform::run(*m_ast, *m_nameDispenser);
break;
case 'r':
RedundantAssignEliminator::run(*m_ast);
break;
case 'm':
Rematerialiser{}(*m_ast);
break;
default:
cout << "Unknown option." << endl;
}
source = AsmPrinter{}(*m_ast);
}
}
private:
ErrorList m_errors;
shared_ptr<yul::Block> m_ast;
shared_ptr<AsmAnalysisInfo> m_analysisInfo;
shared_ptr<NameDispenser> m_nameDispenser;
};
int main(int argc, char** argv)
{
po::options_description options(
R"(yulopti, yul optimizer exploration tool.
Usage: yulopti [Options] <file>
Reads <file> as yul code and applies optimizer steps to it,
interactively read from stdin.
Allowed options)",
po::options_description::m_default_line_length,
po::options_description::m_default_line_length - 23);
options.add_options()
(
"input-file",
po::value<string>(),
"input file"
)
("help", "Show this help screen.");
// All positional options should be interpreted as input files
po::positional_options_description filesPositions;
filesPositions.add("input-file", 1);
po::variables_map arguments;
try
{
po::command_line_parser cmdLineParser(argc, argv);
cmdLineParser.options(options).positional(filesPositions);
po::store(cmdLineParser.run(), arguments);
}
catch (po::error const& _exception)
{
cerr << _exception.what() << endl;
return 1;
}
string input;
if (arguments.count("input-file"))
YulOpti{}.runInteractive(readFileAsString(arguments["input-file"].as<string>()));
else
cout << options;
return 0;
}
|
