Use index into m_asm->items() to modify free memory push.

libyul/optimiser/OptimiserStep.h

@@ -41,7 +41,7 @@ struct OptimiserStepContext
 	std::set<YulString> const& reservedIdentifiers;
 	/// The value nullopt represents creation code
 	std::optional<size_t> expectedExecutionsPerDeployment;
-	std::shared_ptr<u256> externalFreeMemoryPointerInitializer{};
+	u256* externalFreeMemoryPointerInitializer = nullptr;
 };
 
 

libyul/optimiser/Suite.cpp

@@ -90,7 +90,7 @@ void OptimiserSuite::run(
 	string const& _optimisationSequence,
 	optional<size_t> _expectedExecutionsPerDeployment,
 	set<YulString> const& _externallyUsedIdentifiers,
-	std::shared_ptr<u256> _externalFreeMemoryPointerInitializer
+	u256* _externalFreeMemoryPointerInitializer
 )
 {
 	EVMDialect const* evmDialect = dynamic_cast<EVMDialect const*>(&_dialect);

libyul/optimiser/Suite.h

@@ -67,7 +67,7 @@ public:
 		std::string const& _optimisationSequence,
 		std::optional<size_t> _expectedExecutionsPerDeployment,
 		std::set<YulString> const& _externallyUsedIdentifiers = {},
-		std::shared_ptr<u256> _externalFreeMemoryPointerInitializer = {}
+		u256* _externalFreeMemoryPointerInitializer = nullptr
 	);
 
 	/// Ensures that specified sequence of step abbreviations is well-formed and can be executed.
@@ -93,7 +93,7 @@ private:
 		Debug _debug,
 		Block& _ast,
 		std::optional<size_t> expectedExecutionsPerDeployment,
-		std::shared_ptr<u256> _externalFreeMemoryPointerInitializer = {}
+		u256* _externalFreeMemoryPointerInitializer = nullptr
 
 	):
 		m_dispenser{_dialect, _ast, _externallyUsedIdentifiers},