solidity/test/yulPhaser/ProgramCache.cpp

258 lines
9.8 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 <tools/yulPhaser/ProgramCache.h>
#include <tools/yulPhaser/Chromosome.h>
#include <libyul/optimiser/Metrics.h>
#include <liblangutil/CharStream.h>
#include <libsolutil/CommonIO.h>
#include <boost/test/unit_test.hpp>
#include <string>
#include <set>
using namespace std;
using namespace solidity::util;
using namespace solidity::langutil;
using namespace solidity::yul;
namespace solidity::phaser::test
{
class ProgramCacheFixture
{
protected:
static constexpr char SampleSourceCode[] =
"{\n"
" for { let i := 0 } not(eq(i, 15)) { i := add(i, 1) }\n"
" {\n"
" let x := 1\n"
" mstore(i, 2)\n"
" }\n"
"}\n";
Program optimisedProgram(Program _program, string _abbreviatedOptimisationSteps) const
{
Program result = move(_program);
result.optimise(Chromosome(_abbreviatedOptimisationSteps).optimisationSteps());
return result;
}
static set<string> cachedKeys(ProgramCache const& _programCache)
{
set<string> keys;
for (auto pair = _programCache.entries().begin(); pair != _programCache.entries().end(); ++pair)
keys.insert(pair->first);
return keys;
}
CharStream m_sourceStream = CharStream(SampleSourceCode, "program-cache-test");
Program m_program = get<Program>(Program::load(m_sourceStream));
ProgramCache m_programCache{m_program};
};
BOOST_AUTO_TEST_SUITE(Phaser, *boost::unit_test::label("nooptions"))
BOOST_AUTO_TEST_SUITE(ProgramCacheTest)
BOOST_AUTO_TEST_CASE(CacheStats_operator_plus_should_add_stats_together)
{
CacheStats statsA{11, 12, 13, {{1, 14}, {2, 15}}};
CacheStats statsB{21, 22, 23, {{2, 24}, {3, 25}}};
CacheStats statsC{32, 34, 36, {{1, 14}, {2, 39}, {3, 25}}};
BOOST_CHECK(statsA + statsB == statsC);
}
BOOST_FIXTURE_TEST_CASE(optimiseProgram_should_apply_optimisation_steps_to_program, ProgramCacheFixture)
{
Program expectedProgram = optimisedProgram(m_program, "IuO");
assert(toString(expectedProgram) != toString(m_program));
Program cachedProgram = m_programCache.optimiseProgram("IuO");
BOOST_TEST(toString(cachedProgram) == toString(expectedProgram));
}
BOOST_FIXTURE_TEST_CASE(optimiseProgram_should_store_programs_for_all_prefixes, ProgramCacheFixture)
{
Program programI = optimisedProgram(m_program, "I");
Program programIu = optimisedProgram(programI, "u");
Program programIuO = optimisedProgram(programIu, "O");
assert(toString(m_program) != toString(programI));
assert(toString(m_program) != toString(programIu));
assert(toString(m_program) != toString(programIuO));
assert(toString(programI) != toString(programIu));
assert(toString(programI) != toString(programIuO));
assert(toString(programIu) != toString(programIuO));
BOOST_REQUIRE(m_programCache.size() == 0);
Program cachedProgram = m_programCache.optimiseProgram("IuO");
BOOST_TEST(toString(cachedProgram) == toString(programIuO));
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"I", "Iu", "IuO"}));
BOOST_TEST(toString(*m_programCache.find("I")) == toString(programI));
BOOST_TEST(toString(*m_programCache.find("Iu")) == toString(programIu));
BOOST_TEST(toString(*m_programCache.find("IuO")) == toString(programIuO));
}
BOOST_FIXTURE_TEST_CASE(optimiseProgram_should_repeat_the_chromosome_requested_number_of_times, ProgramCacheFixture)
{
string steps = "IuOIuO";
Program cachedProgram = m_programCache.optimiseProgram("IuO", 2);
ProgramCache cacheNoRepetitions(m_program);
Program cachedProgramNoRepetitions = cacheNoRepetitions.optimiseProgram("IuOIuO");
BOOST_TEST(toString(cachedProgram) == toString(cachedProgramNoRepetitions));
for (size_t size = 1; size <= 6; ++size)
{
BOOST_REQUIRE(m_programCache.contains(steps.substr(0, size)));
BOOST_REQUIRE(cacheNoRepetitions.contains(steps.substr(0, size)));
BOOST_TEST(
toString(*cacheNoRepetitions.find(steps.substr(0, size))) ==
toString(*m_programCache.find(steps.substr(0, size)))
);
}
}
BOOST_FIXTURE_TEST_CASE(optimiseProgram_should_reuse_the_longest_prefix_and_move_it_to_the_next_round, ProgramCacheFixture)
{
BOOST_TEST(m_programCache.currentRound() == 0);
m_programCache.optimiseProgram("Iu");
m_programCache.optimiseProgram("Ia");
m_programCache.startRound(1);
BOOST_TEST(m_programCache.currentRound() == 1);
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"I", "Iu", "Ia"}));
BOOST_TEST(m_programCache.entries().find("I")->second.roundNumber == 0);
BOOST_TEST(m_programCache.entries().find("Iu")->second.roundNumber == 0);
BOOST_TEST(m_programCache.entries().find("Ia")->second.roundNumber == 0);
m_programCache.optimiseProgram("IuOI");
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"I", "Iu", "Ia", "IuO", "IuOI"}));
BOOST_TEST(m_programCache.entries().find("I")->second.roundNumber == 1);
BOOST_TEST(m_programCache.entries().find("Iu")->second.roundNumber == 1);
BOOST_TEST(m_programCache.entries().find("Ia")->second.roundNumber == 0);
BOOST_TEST(m_programCache.entries().find("IuO")->second.roundNumber == 1);
BOOST_TEST(m_programCache.entries().find("IuOI")->second.roundNumber == 1);
}
BOOST_FIXTURE_TEST_CASE(startRound_should_remove_entries_older_than_two_rounds, ProgramCacheFixture)
{
BOOST_TEST(m_programCache.currentRound() == 0);
BOOST_TEST(m_programCache.size() == 0);
m_programCache.optimiseProgram("Iu");
BOOST_TEST(m_programCache.currentRound() == 0);
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"I", "Iu"}));
BOOST_TEST(m_programCache.entries().find("I")->second.roundNumber == 0);
BOOST_TEST(m_programCache.entries().find("Iu")->second.roundNumber == 0);
m_programCache.optimiseProgram("a");
BOOST_TEST(m_programCache.currentRound() == 0);
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"I", "Iu", "a"}));
BOOST_TEST(m_programCache.entries().find("I")->second.roundNumber == 0);
BOOST_TEST(m_programCache.entries().find("Iu")->second.roundNumber == 0);
BOOST_TEST(m_programCache.entries().find("a")->second.roundNumber == 0);
m_programCache.startRound(1);
BOOST_TEST(m_programCache.currentRound() == 1);
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"I", "Iu", "a"}));
BOOST_TEST(m_programCache.entries().find("I")->second.roundNumber == 0);
BOOST_TEST(m_programCache.entries().find("Iu")->second.roundNumber == 0);
BOOST_TEST(m_programCache.entries().find("a")->second.roundNumber == 0);
m_programCache.optimiseProgram("af");
BOOST_TEST(m_programCache.currentRound() == 1);
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"I", "Iu", "a", "af"}));
BOOST_TEST(m_programCache.entries().find("I")->second.roundNumber == 0);
BOOST_TEST(m_programCache.entries().find("Iu")->second.roundNumber == 0);
BOOST_TEST(m_programCache.entries().find("a")->second.roundNumber == 1);
BOOST_TEST(m_programCache.entries().find("af")->second.roundNumber == 1);
m_programCache.startRound(2);
BOOST_TEST(m_programCache.currentRound() == 2);
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"a", "af"}));
BOOST_TEST(m_programCache.entries().find("a")->second.roundNumber == 1);
BOOST_TEST(m_programCache.entries().find("af")->second.roundNumber == 1);
m_programCache.startRound(3);
BOOST_TEST(m_programCache.currentRound() == 3);
BOOST_TEST(m_programCache.size() == 0);
}
BOOST_FIXTURE_TEST_CASE(gatherStats_should_return_cache_statistics, ProgramCacheFixture)
{
size_t sizeI = optimisedProgram(m_program, "I").codeSize(CacheStats::StorageWeights);
size_t sizeIu = optimisedProgram(m_program, "Iu").codeSize(CacheStats::StorageWeights);
size_t sizeIuO = optimisedProgram(m_program, "IuO").codeSize(CacheStats::StorageWeights);
size_t sizeL = optimisedProgram(m_program, "L").codeSize(CacheStats::StorageWeights);
size_t sizeLT = optimisedProgram(m_program, "LT").codeSize(CacheStats::StorageWeights);
m_programCache.optimiseProgram("L");
m_programCache.optimiseProgram("Iu");
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"L", "I", "Iu"}));
CacheStats expectedStats1{0, 3, sizeL + sizeI + sizeIu, {{0, 3}}};
BOOST_CHECK(m_programCache.gatherStats() == expectedStats1);
m_programCache.optimiseProgram("IuO");
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"L", "I", "Iu", "IuO"}));
CacheStats expectedStats2{2, 4, sizeL + sizeI + sizeIu + sizeIuO, {{0, 4}}};
BOOST_CHECK(m_programCache.gatherStats() == expectedStats2);
m_programCache.startRound(1);
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"L", "I", "Iu", "IuO"}));
BOOST_CHECK(m_programCache.gatherStats() == expectedStats2);
m_programCache.optimiseProgram("IuO");
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"L", "I", "Iu", "IuO"}));
CacheStats expectedStats3{5, 4, sizeL + sizeI + sizeIu + sizeIuO, {{0, 1}, {1, 3}}};
BOOST_CHECK(m_programCache.gatherStats() == expectedStats3);
m_programCache.startRound(2);
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"I", "Iu", "IuO"}));
CacheStats expectedStats4{5, 4, sizeI + sizeIu + sizeIuO, {{1, 3}}};
BOOST_CHECK(m_programCache.gatherStats() == expectedStats4);
m_programCache.optimiseProgram("LT");
BOOST_REQUIRE((cachedKeys(m_programCache) == set<string>{"L", "LT", "I", "Iu", "IuO"}));
CacheStats expectedStats5{5, 6, sizeL + sizeLT + sizeI + sizeIu + sizeIuO, {{1, 3}, {2, 2}}};
BOOST_CHECK(m_programCache.gatherStats() == expectedStats5);
}
BOOST_AUTO_TEST_SUITE_END()
BOOST_AUTO_TEST_SUITE_END()
}