solidity/test/libyul/YulOptimizerTest.cpp
2019-04-03 14:58:20 +02:00

361 lines
11 KiB
C++

/*
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/>.
*/
#include <test/libyul/YulOptimizerTest.h>
#include <test/Options.h>
#include <libyul/optimiser/BlockFlattener.h>
#include <libyul/optimiser/VarDeclInitializer.h>
#include <libyul/optimiser/VarNameCleaner.h>
#include <libyul/optimiser/DeadCodeEliminator.h>
#include <libyul/optimiser/Disambiguator.h>
#include <libyul/optimiser/CommonSubexpressionEliminator.h>
#include <libyul/optimiser/NameCollector.h>
#include <libyul/optimiser/EquivalentFunctionCombiner.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/SSAReverser.h>
#include <libyul/optimiser/SSATransform.h>
#include <libyul/optimiser/RedundantAssignEliminator.h>
#include <libyul/optimiser/StructuralSimplifier.h>
#include <libyul/optimiser/StackCompressor.h>
#include <libyul/optimiser/Suite.h>
#include <libyul/backends/evm/EVMDialect.h>
#include <libyul/AsmPrinter.h>
#include <libyul/AsmParser.h>
#include <libyul/AsmAnalysis.h>
#include <libyul/AssemblyStack.h>
#include <liblangutil/SourceReferenceFormatter.h>
#include <liblangutil/ErrorReporter.h>
#include <liblangutil/Scanner.h>
#include <libdevcore/AnsiColorized.h>
#include <boost/test/unit_test.hpp>
#include <boost/algorithm/string.hpp>
#include <fstream>
using namespace dev;
using namespace langutil;
using namespace yul;
using namespace yul::test;
using namespace dev::solidity;
using namespace dev::solidity::test;
using namespace std;
YulOptimizerTest::YulOptimizerTest(string const& _filename)
{
boost::filesystem::path path(_filename);
if (path.empty() || std::next(path.begin()) == path.end() || std::next(std::next(path.begin())) == path.end())
BOOST_THROW_EXCEPTION(runtime_error("Filename path has to contain a directory: \"" + _filename + "\"."));
m_optimizerStep = std::prev(std::prev(path.end()))->string();
ifstream file(_filename);
soltestAssert(file, "Cannot open test contract: \"" + _filename + "\".");
file.exceptions(ios::badbit);
m_source = parseSourceAndSettings(file);
if (m_settings.count("yul"))
{
m_yul = true;
m_validatedSettings["yul"] = "true";
m_settings.erase("yul");
}
if (m_settings.count("step"))
{
m_validatedSettings["step"] = m_settings["step"];
m_settings.erase("step");
}
string line;
while (getline(file, line))
if (boost::algorithm::starts_with(line, "// "))
m_expectation += line.substr(3) + "\n";
else
m_expectation += line + "\n";
}
bool YulOptimizerTest::run(ostream& _stream, string const& _linePrefix, bool const _formatted)
{
if (!parse(_stream, _linePrefix, _formatted))
return false;
if (m_optimizerStep == "disambiguator")
disambiguate();
else if (m_optimizerStep == "blockFlattener")
{
disambiguate();
BlockFlattener{}(*m_ast);
}
else if (m_optimizerStep == "varDeclInitializer")
VarDeclInitializer{}(*m_ast);
else if (m_optimizerStep == "varNameCleaner")
VarNameCleaner{*m_ast, *m_dialect}(*m_ast);
else if (m_optimizerStep == "forLoopInitRewriter")
{
disambiguate();
ForLoopInitRewriter{}(*m_ast);
}
else if (m_optimizerStep == "commonSubexpressionEliminator")
{
disambiguate();
(CommonSubexpressionEliminator{*m_dialect})(*m_ast);
}
else if (m_optimizerStep == "expressionSplitter")
{
NameDispenser nameDispenser{*m_dialect, *m_ast};
ExpressionSplitter{*m_dialect, nameDispenser}(*m_ast);
}
else if (m_optimizerStep == "expressionJoiner")
{
disambiguate();
ExpressionJoiner::run(*m_ast);
}
else if (m_optimizerStep == "splitJoin")
{
disambiguate();
NameDispenser nameDispenser{*m_dialect, *m_ast};
ExpressionSplitter{*m_dialect, nameDispenser}(*m_ast);
ExpressionJoiner::run(*m_ast);
ExpressionJoiner::run(*m_ast);
}
else if (m_optimizerStep == "functionGrouper")
{
disambiguate();
(FunctionGrouper{})(*m_ast);
}
else if (m_optimizerStep == "functionHoister")
{
disambiguate();
(FunctionHoister{})(*m_ast);
}
else if (m_optimizerStep == "expressionInliner")
{
disambiguate();
ExpressionInliner(*m_dialect, *m_ast).run();
}
else if (m_optimizerStep == "fullInliner")
{
disambiguate();
(FunctionHoister{})(*m_ast);
(FunctionGrouper{})(*m_ast);
NameDispenser nameDispenser{*m_dialect, *m_ast};
ExpressionSplitter{*m_dialect, nameDispenser}(*m_ast);
FullInliner(*m_ast, nameDispenser).run();
ExpressionJoiner::run(*m_ast);
}
else if (m_optimizerStep == "mainFunction")
{
disambiguate();
(FunctionGrouper{})(*m_ast);
(MainFunction{})(*m_ast);
}
else if (m_optimizerStep == "rematerialiser")
{
disambiguate();
Rematerialiser::run(*m_dialect, *m_ast);
}
else if (m_optimizerStep == "expressionSimplifier")
{
disambiguate();
ExpressionSimplifier::run(*m_dialect, *m_ast);
}
else if (m_optimizerStep == "fullSimplify")
{
disambiguate();
NameDispenser nameDispenser{*m_dialect, *m_ast};
ExpressionSplitter{*m_dialect, nameDispenser}(*m_ast);
CommonSubexpressionEliminator{*m_dialect}(*m_ast);
ExpressionSimplifier::run(*m_dialect, *m_ast);
UnusedPruner::runUntilStabilised(*m_dialect, *m_ast);
DeadCodeEliminator{}(*m_ast);
ExpressionJoiner::run(*m_ast);
ExpressionJoiner::run(*m_ast);
}
else if (m_optimizerStep == "unusedPruner")
{
disambiguate();
UnusedPruner::runUntilStabilised(*m_dialect, *m_ast);
}
else if (m_optimizerStep == "deadCodeEliminator")
{
disambiguate();
DeadCodeEliminator{}(*m_ast);
}
else if (m_optimizerStep == "ssaTransform")
{
disambiguate();
NameDispenser nameDispenser{*m_dialect, *m_ast};
SSATransform::run(*m_ast, nameDispenser);
}
else if (m_optimizerStep == "redundantAssignEliminator")
{
disambiguate();
RedundantAssignEliminator::run(*m_dialect, *m_ast);
}
else if (m_optimizerStep == "ssaPlusCleanup")
{
disambiguate();
NameDispenser nameDispenser{*m_dialect, *m_ast};
SSATransform::run(*m_ast, nameDispenser);
RedundantAssignEliminator::run(*m_dialect, *m_ast);
}
else if (m_optimizerStep == "structuralSimplifier")
{
disambiguate();
StructuralSimplifier{*m_dialect}(*m_ast);
}
else if (m_optimizerStep == "equivalentFunctionCombiner")
{
disambiguate();
EquivalentFunctionCombiner::run(*m_ast);
}
else if (m_optimizerStep == "ssaReverser")
{
disambiguate();
SSAReverser::run(*m_ast);
}
else if (m_optimizerStep == "ssaAndBack")
{
disambiguate();
// apply SSA
NameDispenser nameDispenser{*m_dialect, *m_ast};
SSATransform::run(*m_ast, nameDispenser);
RedundantAssignEliminator::run(*m_dialect, *m_ast);
// reverse SSA
SSAReverser::run(*m_ast);
CommonSubexpressionEliminator{*m_dialect}(*m_ast);
UnusedPruner::runUntilStabilised(*m_dialect, *m_ast);
}
else if (m_optimizerStep == "stackCompressor")
{
disambiguate();
(FunctionGrouper{})(*m_ast);
size_t maxIterations = 16;
StackCompressor::run(m_dialect, *m_ast, true, maxIterations);
(BlockFlattener{})(*m_ast);
}
else if (m_optimizerStep == "fullSuite")
OptimiserSuite::run(m_dialect, *m_ast, *m_analysisInfo, true);
else
{
AnsiColorized(_stream, _formatted, {formatting::BOLD, formatting::RED}) << _linePrefix << "Invalid optimizer step: " << m_optimizerStep << endl;
return false;
}
m_obtainedResult = AsmPrinter{m_yul}(*m_ast) + "\n";
bool success = true;
if (m_optimizerStep != m_validatedSettings["step"])
{
string nextIndentLevel = _linePrefix + " ";
AnsiColorized(_stream, _formatted, {formatting::BOLD, formatting::CYAN}) <<
_linePrefix <<
"Invalid optimizer step. Given: \"" <<
m_validatedSettings["step"] <<
"\", should be: \"" <<
m_optimizerStep <<
"\"." <<
endl;
success = false;
}
if (m_expectation != m_obtainedResult)
{
string nextIndentLevel = _linePrefix + " ";
AnsiColorized(_stream, _formatted, {formatting::BOLD, formatting::CYAN}) << _linePrefix << "Expected result:" << endl;
// TODO could compute a simple diff with highlighted lines
printIndented(_stream, m_expectation, nextIndentLevel);
AnsiColorized(_stream, _formatted, {formatting::BOLD, formatting::CYAN}) << _linePrefix << "Obtained result:" << endl;
printIndented(_stream, m_obtainedResult, nextIndentLevel);
success = false;
}
return success;
}
void YulOptimizerTest::printSource(ostream& _stream, string const& _linePrefix, bool const) const
{
printIndented(_stream, m_source, _linePrefix);
}
void YulOptimizerTest::printUpdatedSettings(ostream& _stream, const string& _linePrefix, const bool _formatted)
{
m_validatedSettings["step"] = m_optimizerStep;
EVMVersionRestrictedTestCase::printUpdatedSettings(_stream, _linePrefix, _formatted);
}
void YulOptimizerTest::printUpdatedExpectations(ostream& _stream, string const& _linePrefix) const
{
printIndented(_stream, m_obtainedResult, _linePrefix);
}
void YulOptimizerTest::printIndented(ostream& _stream, string const& _output, string const& _linePrefix) const
{
stringstream output(_output);
string line;
while (getline(output, line))
_stream << _linePrefix << line << endl;
}
bool YulOptimizerTest::parse(ostream& _stream, string const& _linePrefix, bool const _formatted)
{
AssemblyStack stack(
dev::test::Options::get().evmVersion(),
m_yul ? AssemblyStack::Language::Yul : AssemblyStack::Language::StrictAssembly,
dev::solidity::OptimiserSettings::none()
);
if (!stack.parseAndAnalyze("", m_source) || !stack.errors().empty())
{
AnsiColorized(_stream, _formatted, {formatting::BOLD, formatting::RED}) << _linePrefix << "Error parsing source." << endl;
printErrors(_stream, stack.errors());
return false;
}
m_dialect = m_yul ? Dialect::yul() : EVMDialect::strictAssemblyForEVMObjects(dev::test::Options::get().evmVersion());
m_ast = stack.parserResult()->code;
m_analysisInfo = stack.parserResult()->analysisInfo;
return true;
}
void YulOptimizerTest::disambiguate()
{
*m_ast = boost::get<Block>(Disambiguator(*m_dialect, *m_analysisInfo)(*m_ast));
m_analysisInfo.reset();
}
void YulOptimizerTest::printErrors(ostream& _stream, ErrorList const& _errors)
{
SourceReferenceFormatter formatter(_stream);
for (auto const& error: _errors)
formatter.printExceptionInformation(
*error,
(error->type() == Error::Type::Warning) ? "Warning" : "Error"
);
}