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Merge pull request #2397 from ethereum/doublepush

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Peephole optimizer for double push.
This commit is contained in:
chriseth
2017-06-15 10:50:07 +02:00
committed by GitHub
parent 1636602fc4 7af9d10006
commit fb5db94879
5 changed files with 56 additions and 8 deletions
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test/libsolidity/SolidityOptimizer.cpp
+26
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@@ -1189,6 +1189,32 @@ BOOST_AUTO_TEST_CASE(clear_unreachable_code)
);
}
BOOST_AUTO_TEST_CASE(peephole_double_push)
{
AssemblyItems items{
u256(0),
u256(0),
u256(5),
u256(5),
u256(4),
u256(5)
};
AssemblyItems expectation{
u256(0),
Instruction::DUP1,
u256(5),
Instruction::DUP1,
u256(4),
u256(5)
};
PeepholeOptimiser peepOpt(items);
BOOST_REQUIRE(peepOpt.optimise());
BOOST_CHECK_EQUAL_COLLECTIONS(
items.begin(), items.end(),
expectation.begin(), expectation.end()
);
}
BOOST_AUTO_TEST_CASE(computing_constants)
{
char const* sourceCode = R"(