Method calculateCacheKey

libyul/ObjectOptimizer.cpp:123–154

}

std::optional<h256> ObjectOptimizer::calculateCacheKey(
	Block const& _ast,
	ObjectDebugData const& _debugData,
	Settings const& _settings,
	bool _isCreation
)
{
	AsmPrinter asmPrinter(
		EVMDialect::strictAssemblyForEVMObjects(_settings.evmVersion, _settings.eofVersion),
		_debugData.sourceNames,
		DebugInfoSelection::All()
	);

	bytes rawKey;
	// NOTE: AsmPrinter never prints nativeLocations included in debug data, so ASTs differing only
	// in that regard are considered equal here.  This is fine because the optimizer does not keep
	// them up to date across AST transformations anyway so in any use where they need to be reliable,
	// we just regenerate them by reparsing the object.
	rawKey += keccak256(asmPrinter(_ast)).asBytes();
	rawKey += keccak256(_debugData.formatUseSrcComment()).asBytes();
	static_assert(static_cast<uint8_t>(static_cast<bool>(2)) == 1);
	rawKey += FixedHash<1>(static_cast<uint8_t>(_settings.optimizeStackAllocation)).asBytes();
	rawKey += h256(u256(_settings.expectedExecutionsPerDeployment)).asBytes();
	rawKey += FixedHash<1>(static_cast<uint8_t>(_isCreation)).asBytes();
	rawKey += keccak256(_settings.evmVersion.name()).asBytes();
	yulAssert(!_settings.eofVersion.has_value() || *_settings.eofVersion > 0);
	rawKey += FixedHash<1>(static_cast<uint8_t>(_settings.eofVersion ? *_settings.eofVersion : 0)).asBytes();
	rawKey += keccak256(_settings.yulOptimiserSteps).asBytes();
	rawKey += keccak256(_settings.yulOptimiserCleanupSteps).asBytes();

	return h256(keccak256(rawKey));
}