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| author | chriseth <chris@ethereum.org> | 2018-04-05 17:57:26 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-04-05 17:57:26 +0800 |
| commit | c6da5c1650964f9dadd4b483d42585223e086b74 (patch) | |
| tree | 693cc1ec510c7eb688eb0fc0e31cc97380c1e265 /test/libsolidity/SolidityEndToEndTest.cpp | |
| parent | c6adad9368dce6b02d924b0fd3afb4bba4b23c06 (diff) | |
| parent | 8dc9113e370a2edd42213c2c0cca811a3dbd8dd4 (diff) | |
| download | dexon-solidity-c6da5c1650964f9dadd4b483d42585223e086b74.tar.gz dexon-solidity-c6da5c1650964f9dadd4b483d42585223e086b74.tar.zst dexon-solidity-c6da5c1650964f9dadd4b483d42585223e086b74.zip | |
Merge pull request #3822 from ethereum/swap-comparison
Replace comparison operators with opposites if preceded by SWAP1
Diffstat (limited to 'test/libsolidity/SolidityEndToEndTest.cpp')
| -rw-r--r-- | test/libsolidity/SolidityEndToEndTest.cpp | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/test/libsolidity/SolidityEndToEndTest.cpp b/test/libsolidity/SolidityEndToEndTest.cpp index 07aa437e..beeae786 100644 --- a/test/libsolidity/SolidityEndToEndTest.cpp +++ b/test/libsolidity/SolidityEndToEndTest.cpp @@ -11097,6 +11097,50 @@ BOOST_AUTO_TEST_CASE(staticcall_for_view_and_pure) } } +BOOST_AUTO_TEST_CASE(swap_peephole_optimisation) +{ + char const* sourceCode = R"( + contract C { + function lt(uint a, uint b) returns (bool c) { + assembly { + a + b + swap1 + lt + =: c + } + } + function add(uint a, uint b) returns (uint c) { + assembly { + a + b + swap1 + add + =: c + } + } + function div(uint a, uint b) returns (uint c) { + assembly { + a + b + swap1 + div + =: c + } + } + } + )"; + compileAndRun(sourceCode); + BOOST_CHECK(callContractFunction("lt(uint256,uint256)", u256(1), u256(2)) == encodeArgs(u256(1))); + BOOST_CHECK(callContractFunction("lt(uint256,uint256)", u256(2), u256(1)) == encodeArgs(u256(0))); + BOOST_CHECK(callContractFunction("add(uint256,uint256)", u256(1), u256(2)) == encodeArgs(u256(3))); + BOOST_CHECK(callContractFunction("add(uint256,uint256)", u256(100), u256(200)) == encodeArgs(u256(300))); + BOOST_CHECK(callContractFunction("div(uint256,uint256)", u256(2), u256(1)) == encodeArgs(u256(2))); + BOOST_CHECK(callContractFunction("div(uint256,uint256)", u256(200), u256(10)) == encodeArgs(u256(20))); + BOOST_CHECK(callContractFunction("div(uint256,uint256)", u256(1), u256(0)) == encodeArgs(u256(0))); + BOOST_CHECK(callContractFunction("div(uint256,uint256)", u256(0), u256(1)) == encodeArgs(u256(0))); +} + BOOST_AUTO_TEST_SUITE_END() } |