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Do not create unassigned variables.

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chriseth
2018-12-13 16:51:10 +01:00
parent 11209ec48a
commit 6c6a53a439
16 changed files with 50 additions and 47 deletions
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libyul/optimiser/FullInliner.cpp
+4
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@@ -168,6 +168,8 @@ vector<Statement> InlineModifier::performInline(Statement& _statement, FunctionC
m_driver.tentativelyUpdateCodeSize(function->name, m_currentFunction);
static Expression const zero{Literal{{}, LiteralKind::Number, YulString{"0"}, {}}};
// helper function to create a new variable that is supposed to model
// an existing variable.
auto newVariable = [&](TypedName const& _existingVariable, Expression* _value) {
@@ -176,6 +178,8 @@ vector<Statement> InlineModifier::performInline(Statement& _statement, FunctionC
VariableDeclaration varDecl{_funCall.location, {{_funCall.location, newName, _existingVariable.type}}, {}};
if (_value)
varDecl.value = make_shared<Expression>(std::move(*_value));
else
varDecl.value = make_shared<Expression>(zero);
newStatements.emplace_back(std::move(varDecl));
};