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Fix for implementation.

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This commit is contained in:
chriseth 2022-04-17 18:20:35 +02:00
parent 1cc485bf72
commit 9da8d7f28c
1 changed files with 15 additions and 9 deletions
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24
libyul/optimiser/ReasoningBasedSimplifier.cpp
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@ -21,6 +21,7 @@
#include <libyul/optimiser/Semantics.h>
#include <libyul/AST.h>
#include <libyul/Dialect.h>
#include <libyul/optimiser/NameCollector.h>
#include <libsmtutil/SMTPortfolio.h>
#include <libsmtutil/Helpers.h>
@ -121,20 +122,25 @@ void ReasoningBasedSimplifier::operator()(ForLoop& _for)
m_pathCondition = branchCondition;
yulAssert(_for.pre.statements.empty());
//TODO clear variables assigned inside body and post
// clear variables assigned inside body and post
for (YulString const& varName: assignedVariableNames(_for.body) + assignedVariableNames(_for.post))
{
m_variableSequenceCounter[varName]++;
m_solver->newVariable(variableNameAtIndex(varName, m_variableSequenceCounter.at(varName)), defaultSort());
restrictToEVMWord(currentVariableExpression(varName));
}
ASTModifier::operator()(_for.body);
// TODO clear modified variables!
ASTModifier::operator()(_for.post);
// join control flow
for (auto& var: oldCounters)
if (m_variableSequenceCounter.at(var.first) != var.second)
{
var.second++;
m_solver->newVariable(variableNameAtIndex(var.first, var.second), defaultSort());
restrictToEVMWord(currentVariableExpression(var.first));
}
// clear variables assigned inside body and post
for (YulString const& varName: assignedVariableNames(_for.body) + assignedVariableNames(_for.post))
{
m_variableSequenceCounter[varName]++;
m_solver->newVariable(variableNameAtIndex(varName, m_variableSequenceCounter.at(varName)), defaultSort());
restrictToEVMWord(currentVariableExpression(varName));
}
m_variableSequenceCounter = move(oldCounters);
m_pathCondition = move(oldPathCondition);