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Use side effects of user-defined functions in other optimizer steps.

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chriseth
2021-11-02 11:59:01 +01:00
parent 5eb97fa6ee
commit d6c461ed61
8 changed files with 88 additions and 32 deletions
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libyul/optimiser/ConditionalUnsimplifier.cpp
+8 -1
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@@ -20,6 +20,7 @@
#include <libyul/AST.h>
#include <libyul/Utilities.h>
#include <libyul/optimiser/NameCollector.h>
#include <libyul/ControlFlowSideEffectsCollector.h>
#include <libsolutil/CommonData.h>
using namespace std;
@@ -27,6 +28,12 @@ using namespace solidity;
using namespace solidity::yul;
using namespace solidity::util;
void ConditionalUnsimplifier::run(OptimiserStepContext& _context, Block& _ast)
{
ControlFlowSideEffectsCollector sideEffects(_context.dialect, _ast);
ConditionalUnsimplifier{_context.dialect, sideEffects.functionSideEffects()}(_ast);
}
void ConditionalUnsimplifier::operator()(Switch& _switch)
{
visit(*_switch.expression);
@@ -78,7 +85,7 @@ void ConditionalUnsimplifier::operator()(Block& _block)
YulString condition = std::get<Identifier>(*_if.condition).name;
if (
holds_alternative<Assignment>(_stmt2) &&
TerminationFinder(m_dialect).controlFlowKind(_if.body.statements.back()) !=
TerminationFinder(m_dialect, &m_functionSideEffects).controlFlowKind(_if.body.statements.back()) !=
TerminationFinder::ControlFlow::FlowOut
)
{