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Optimize across MLOAD if MSIZE is not used.

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chriseth
2018-04-03 14:34:32 +02:00
parent d21382157c
commit 6777f7a57f
10 changed files with 87 additions and 35 deletions
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test/libevmasm/Optimiser.cpp
+3 -2
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@@ -69,8 +69,9 @@ namespace
{
AssemblyItems input = addDummyLocations(_input);
bool usesMsize = (find(_input.begin(), _input.end(), AssemblyItem{Instruction::MSIZE}) != _input.end());
eth::CommonSubexpressionEliminator cse(_state);
BOOST_REQUIRE(cse.feedItems(input.begin(), input.end()) == input.end());
BOOST_REQUIRE(cse.feedItems(input.begin(), input.end(), usesMsize) == input.end());
AssemblyItems output = cse.getOptimizedItems();
for (AssemblyItem const& item: output)
@@ -124,7 +125,7 @@ BOOST_AUTO_TEST_CASE(cse_intermediate_swap)
Instruction::SLOAD, Instruction::SWAP1, u256(100), Instruction::EXP, Instruction::SWAP1,
Instruction::DIV, u256(0xff), Instruction::AND
};
BOOST_REQUIRE(cse.feedItems(input.begin(), input.end()) == input.end());
BOOST_REQUIRE(cse.feedItems(input.begin(), input.end(), false) == input.end());
AssemblyItems output = cse.getOptimizedItems();
BOOST_CHECK(!output.empty());
}