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Optimize double ISZERO.

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This commit is contained in:
chriseth 2015-06-06 12:42:36 +02:00
parent 187f5de2dd
commit a20b23a7a8
1 changed files with 10 additions and 0 deletions
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libsolidity/SolidityOptimizer.cpp
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@ -440,6 +440,16 @@ BOOST_AUTO_TEST_CASE(cse_double_negation)
checkCSE({Instruction::DUP5, Instruction::NOT, Instruction::NOT}, {Instruction::DUP5}); checkCSE({Instruction::DUP5, Instruction::NOT, Instruction::NOT}, {Instruction::DUP5});
} }
BOOST_AUTO_TEST_CASE(cse_double_iszero)
{
checkCSE({Instruction::GT, Instruction::ISZERO, Instruction::ISZERO}, {Instruction::GT});
checkCSE({Instruction::GT, Instruction::ISZERO}, {Instruction::GT, Instruction::ISZERO});
checkCSE(
{Instruction::ISZERO, Instruction::ISZERO, Instruction::ISZERO},
{Instruction::ISZERO}
);
}
BOOST_AUTO_TEST_CASE(cse_associativity) BOOST_AUTO_TEST_CASE(cse_associativity)
{ {
AssemblyItems input{ AssemblyItems input{