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Test number of sstore operations.

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This commit is contained in:
chriseth 2018-03-13 13:00:16 +01:00
parent 6777f7a57f
commit 138dba1a3f
1 changed files with 33 additions and 7 deletions
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40
test/libsolidity/SolidityOptimizer.cpp
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@ -74,11 +74,11 @@ public:
unsigned const _optimizeRuns = 200
)
{
bytes nonOptimizedBytecode = compileAndRunWithOptimizer(_sourceCode, _value, _contractName, false, _optimizeRuns);
m_nonOptimizedBytecode = compileAndRunWithOptimizer(_sourceCode, _value, _contractName, false, _optimizeRuns);
m_nonOptimizedContract = m_contractAddress;
bytes optimizedBytecode = compileAndRunWithOptimizer(_sourceCode, _value, _contractName, true, _optimizeRuns);
size_t nonOptimizedSize = numInstructions(nonOptimizedBytecode);
size_t optimizedSize = numInstructions(optimizedBytecode);
m_optimizedBytecode = compileAndRunWithOptimizer(_sourceCode, _value, _contractName, true, _optimizeRuns);
size_t nonOptimizedSize = numInstructions(m_nonOptimizedBytecode);
size_t optimizedSize = numInstructions(m_optimizedBytecode);
BOOST_CHECK_MESSAGE(
_optimizeRuns < 50 || optimizedSize < nonOptimizedSize,
string("Optimizer did not reduce bytecode size. Non-optimized size: ") +
@ -104,7 +104,7 @@ public:
/// @returns the number of intructions in the given bytecode, not taking the metadata hash
/// into account.
size_t numInstructions(bytes const& _bytecode)
size_t numInstructions(bytes const& _bytecode, boost::optional<Instruction> _which = boost::optional<Instruction>{})
{
BOOST_REQUIRE(_bytecode.size() > 5);
size_t metadataSize = (_bytecode[_bytecode.size() - 2] << 8) + _bytecode[_bytecode.size() - 1];
@ -112,13 +112,16 @@ public:
BOOST_REQUIRE(_bytecode.size() >= metadataSize + 2);
bytes realCode = bytes(_bytecode.begin(), _bytecode.end() - metadataSize - 2);
size_t instructions = 0;
solidity::eachInstruction(realCode, [&](Instruction, u256 const&) {
instructions++;
solidity::eachInstruction(realCode, [&](Instruction _instr, u256 const&) {
if (!_which || *_which == _instr)
instructions++;
});
return instructions;
}
protected:
bytes m_nonOptimizedBytecode;
bytes m_optimizedBytecode;
Address m_optimizedContract;
Address m_nonOptimizedContract;
};
@ -581,6 +584,29 @@ BOOST_AUTO_TEST_CASE(invalid_state_at_control_flow_join)
compareVersions("test()");
}
BOOST_AUTO_TEST_CASE(optimise_multi_stores)
{
char const* sourceCode = R"(
contract Test {
struct S { uint16 a; uint16 b; uint16[3] c; uint[] dyn; }
uint padding;
S[] s;
function f() public returns (uint16, uint16, uint16[3], uint) {
uint16[3] memory c;
c[0] = 7;
c[1] = 8;
c[2] = 9;
s.push(S(1, 2, c, new uint[](4)));
return (s[0].a, s[0].b, s[0].c, s[0].dyn[2]);
}
}
)";
compileBothVersions(sourceCode);
compareVersions("f()");
BOOST_CHECK_EQUAL(numInstructions(m_nonOptimizedBytecode, Instruction::SSTORE), 13);
BOOST_CHECK_EQUAL(numInstructions(m_optimizedBytecode, Instruction::SSTORE), 11);
}
BOOST_AUTO_TEST_SUITE_END()
}