diff options
| author | Alex Beregszaszi <alex@rtfs.hu> | 2018-03-29 19:10:39 +0800 |
|---|---|---|
| committer | Alex Beregszaszi <alex@rtfs.hu> | 2018-04-04 00:57:07 +0800 |
| commit | 17bcabb6cfb42a3983ecb79768d44622507ce292 (patch) | |
| tree | 38a461706217087ba3253282c5309a40e692a052 /test/libevmasm | |
| parent | 0edce4b570c157927933697b30f0f94cbdf173b2 (diff) | |
| download | dexon-solidity-17bcabb6cfb42a3983ecb79768d44622507ce292.tar.gz dexon-solidity-17bcabb6cfb42a3983ecb79768d44622507ce292.tar.zst dexon-solidity-17bcabb6cfb42a3983ecb79768d44622507ce292.zip | |
Remove useless SWAP1 in front of commutative operations
Diffstat (limited to 'test/libevmasm')
| -rw-r--r-- | test/libevmasm/Optimiser.cpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/test/libevmasm/Optimiser.cpp b/test/libevmasm/Optimiser.cpp index 28f6b8c0..6b588e75 100644 --- a/test/libevmasm/Optimiser.cpp +++ b/test/libevmasm/Optimiser.cpp @@ -858,6 +858,57 @@ BOOST_AUTO_TEST_CASE(peephole_pop_calldatasize) BOOST_CHECK(items.empty()); } +BOOST_AUTO_TEST_CASE(peephole_commutative_swap1) +{ + AssemblyItems items{ + u256(1), + u256(2), + Instruction::SWAP1, + Instruction::ADD, + u256(4), + u256(5) + }; + AssemblyItems expectation{ + u256(1), + u256(2), + Instruction::ADD, + 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(peephole_noncommutative_swap1) +{ + AssemblyItems items{ + u256(1), + u256(2), + Instruction::SWAP1, + Instruction::SUB, + u256(4), + u256(5) + }; + AssemblyItems expectation{ + u256(1), + u256(2), + Instruction::SWAP1, + Instruction::SUB, + 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(jumpdest_removal) { AssemblyItems items{ |