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Add storage load/store functions to Yul dialect.

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This commit is contained in:
Daniel Kirchner
2020-12-03 19:10:05 +01:00
parent 3862ceb528
commit 96a50b52e2
6 changed files with 61 additions and 70 deletions
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libyul/optimiser/LoadResolver.cpp
+10 -13
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@@ -46,21 +46,18 @@ void LoadResolver::visit(Expression& _e)
{
DataFlowAnalyzer::visit(_e);
if (!dynamic_cast<EVMDialect const*>(&m_dialect))
return;
if (holds_alternative<FunctionCall>(_e))
{
FunctionCall const& funCall = std::get<FunctionCall>(_e);
if (auto const* builtin = dynamic_cast<EVMDialect const&>(m_dialect).builtin(funCall.functionName.name))
if (builtin->instruction)
tryResolve(_e, *builtin->instruction, funCall.arguments);
}
if (FunctionCall const* funCall = std::get_if<FunctionCall>(&_e))
for (auto location: { StoreLoadLocation::Memory, StoreLoadLocation::Storage })
if (funCall->functionName.name == m_loadFunctionName[static_cast<unsigned>(location)])
{
tryResolve(_e, location, funCall->arguments);
break;
}
}
void LoadResolver::tryResolve(
Expression& _e,
evmasm::Instruction _instruction,
StoreLoadLocation _location,
vector<Expression> const& _arguments
)
{
@@ -69,13 +66,13 @@ void LoadResolver::tryResolve(
YulString key = std::get<Identifier>(_arguments.at(0)).name;
if (
_instruction == evmasm::Instruction::SLOAD &&
_location == StoreLoadLocation::Storage &&
m_storage.values.count(key)
)
_e = Identifier{locationOf(_e), m_storage.values[key]};
else if (
m_optimizeMLoad &&
_instruction == evmasm::Instruction::MLOAD &&
_location == StoreLoadLocation::Memory &&
m_memory.values.count(key)
)
_e = Identifier{locationOf(_e), m_memory.values[key]};