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Disallow optimizer steps that require SMT if none is available.

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chriseth
2020-09-15 15:57:59 +02:00
parent 9bcc2f1713
commit bfd3ab23e2
4 changed files with 44 additions and 0 deletions
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libyul/optimiser/ReasoningBasedSimplifier.cpp
+9
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@@ -46,6 +46,15 @@ void ReasoningBasedSimplifier::run(OptimiserStepContext& _context, Block& _ast)
ReasoningBasedSimplifier{_context.dialect, ssaVars}(_ast);
}
std::optional<string> ReasoningBasedSimplifier::invalidInCurrentEnvironment()
{
// SMTLib2 interface is always available, but we would like to have synchronous answers.
if (smtutil::SMTPortfolio{}.solvers() <= 1)
return string{"No SMT solvers available."};
else
return nullopt;
}
void ReasoningBasedSimplifier::operator()(VariableDeclaration& _varDecl)
{
if (_varDecl.variables.size() != 1 || !_varDecl.value)