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ref wrapper

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This commit is contained in:
chriseth 2022-11-09 16:28:50 +01:00
parent 7950c2d82c
commit eaf5fc95f8
3 changed files with 18 additions and 13 deletions
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8
libyul/optimiser/BlockHasher.h
View File

@ -134,4 +134,12 @@ public:
void operator()(FunctionCall const& _funCall) override;
};
struct ExpressionHash
{
uint64_t operator()(Expression const& _expression) const
{
return ExpressionHasher{}.run(_expression);
}
};
}

17
libyul/optimiser/CommonSubexpressionEliminator.cpp
View File

@ -105,11 +105,8 @@ void CommonSubexpressionEliminator::visit(Expression& _e)
_e = Identifier{debugDataOf(_e), value->name};
}
}
else if (
auto it = m_replacementCandidates.find(&_e);
it != m_replacementCandidates.end()
)
for (auto const& variable: it->second)
else if (auto const* candidates = util::valueOrNullptr(m_replacementCandidates, _e))
for (auto const& variable: *candidates)
if (AssignedValue const* value = variableValue(variable))
{
assertThrow(value->value, OptimizerException, "");
@ -133,16 +130,16 @@ void CommonSubexpressionEliminator::visit(Expression& _e)
void CommonSubexpressionEliminator::assignValue(YulString _variable, Expression const* _value)
{
if (_value)
m_replacementCandidates[_value].insert(_variable);
m_replacementCandidates[*_value].insert(_variable);
DataFlowAnalyzer::assignValue(_variable, _value);
}
uint64_t CommonSubexpressionEliminator::ExpressionHash::operator()(Expression const* _e) const
uint64_t CommonSubexpressionEliminator::ExpressionHash::operator()(Expression const& _e) const
{
return ExpressionHasher::run(*_e);
return ExpressionHasher::run(_e);
}
bool CommonSubexpressionEliminator::ExpressionEqual::operator()(Expression const* _a, Expression const* _b) const
bool CommonSubexpressionEliminator::ExpressionEqual::operator()(Expression const& _a, Expression const& _b) const
{
return SyntacticallyEqual{}(*_a, *_b);
return SyntacticallyEqual{}(_a, _b);
}

6
libyul/optimiser/CommonSubexpressionEliminator.h
View File

@ -61,14 +61,14 @@ protected:
void assignValue(YulString _variable, Expression const* _value) override;
private:
struct ExpressionHash {
uint64_t operator()(Expression const*) const;
uint64_t operator()(Expression const&) const;
};
struct ExpressionEqual {
bool operator()(Expression const*, Expression const*) const;
bool operator()(Expression const&, Expression const&) const;
};
std::set<YulString> m_returnVariables;
std::unordered_map<
Expression const*,
std::reference_wrapper<Expression const>,
std::set<YulString>,
ExpressionHash,
ExpressionEqual