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Swap literals to the end if optimizing.

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Christian 2014-12-11 17:35:23 +01:00
parent 1db9bc1651
commit c68d1c62e0
1 changed files with 17 additions and 2 deletions
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19
solidityOptimizerTest.cpp
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@ -48,7 +48,7 @@ public:
m_optimize = true; m_optimize = true;
bytes optimizedBytecode = compileAndRun(_sourceCode, _value, _contractName); bytes optimizedBytecode = compileAndRun(_sourceCode, _value, _contractName);
int sizeDiff = nonOptimizedBytecode.size() - optimizedBytecode.size(); int sizeDiff = nonOptimizedBytecode.size() - optimizedBytecode.size();
BOOST_CHECK_MESSAGE(sizeDiff >= _expectedSizeDecrease, "Bytecode did only shrink by " BOOST_CHECK_MESSAGE(sizeDiff == _expectedSizeDecrease, "Bytecode did only shrink by "
+ boost::lexical_cast<string>(sizeDiff) + " bytes, expected: " + boost::lexical_cast<string>(sizeDiff) + " bytes, expected: "
+ boost::lexical_cast<string>(_expectedSizeDecrease)); + boost::lexical_cast<string>(_expectedSizeDecrease));
m_optimizedContract = m_contractAddress; m_optimizedContract = m_contractAddress;
@ -106,7 +106,7 @@ BOOST_AUTO_TEST_CASE(invariants)
return (((a + (1 - 1)) ^ 0) | 0) & (uint(0) - 1); return (((a + (1 - 1)) ^ 0) | 0) & (uint(0) - 1);
} }
})"; })";
compileBothVersions(19, sourceCode); compileBothVersions(28, sourceCode);
compareVersions(0, u256(0x12334664)); compareVersions(0, u256(0x12334664));
} }
@ -124,6 +124,21 @@ BOOST_AUTO_TEST_CASE(unused_expressions)
compareVersions(0); compareVersions(0);
} }
BOOST_AUTO_TEST_CASE(constant_folding_both_sides)
{
// if constants involving the same associative and commutative operator are applied from both
// sides, the operator should be applied only once, because the expression compiler
// (even in non-optimized mode) pushes literals as late as possible
char const* sourceCode = R"(
contract test {
function f(uint x) returns (uint y) {
return 98 ^ (7 * ((1 | (x | 1000)) * 40) ^ 102);
}
})";
compileBothVersions(31, sourceCode);
compareVersions(0);
}
BOOST_AUTO_TEST_SUITE_END() BOOST_AUTO_TEST_SUITE_END()
} }