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[Yul] leave statement.

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This commit is contained in:
chriseth
2019-10-29 14:32:16 +01:00
parent edf1e83fda
commit ceb8ee9124
41 changed files with 214 additions and 27 deletions
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libyul/optimiser/RedundantAssignEliminator.cpp
+12
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@@ -104,12 +104,17 @@ void RedundantAssignEliminator::operator()(Switch const& _switch)
void RedundantAssignEliminator::operator()(FunctionDefinition const& _functionDefinition)
{
std::set<YulString> outerDeclaredVariables;
std::set<YulString> outerReturnVariables;
TrackedAssignments outerAssignments;
ForLoopInfo forLoopInfo;
swap(m_declaredVariables, outerDeclaredVariables);
swap(m_returnVariables, outerReturnVariables);
swap(m_assignments, outerAssignments);
swap(m_forLoopInfo, forLoopInfo);
for (auto const& retParam: _functionDefinition.returnVariables)
m_returnVariables.insert(retParam.name);
(*this)(_functionDefinition.body);
for (auto const& param: _functionDefinition.parameters)
@@ -118,6 +123,7 @@ void RedundantAssignEliminator::operator()(FunctionDefinition const& _functionDe
finalize(retParam.name, State::Used);
swap(m_declaredVariables, outerDeclaredVariables);
swap(m_returnVariables, outerReturnVariables);
swap(m_assignments, outerAssignments);
swap(m_forLoopInfo, forLoopInfo);
}
@@ -200,6 +206,12 @@ void RedundantAssignEliminator::operator()(Continue const&)
m_assignments.clear();
}
void RedundantAssignEliminator::operator()(Leave const&)
{
for (YulString name: m_returnVariables)
changeUndecidedTo(name, State::Used);
}
void RedundantAssignEliminator::operator()(Block const& _block)
{
set<YulString> outerDeclaredVariables;