| 38 | using namespace solidity::yul; |
| 39 | |
| 40 | SimplificationRules::Rule const* SimplificationRules::findFirstMatch( |
| 41 | Expression const& _expr, |
| 42 | Dialect const& _dialect, |
| 43 | std::function<AssignedValue const*(YulName)> const& _ssaValues |
| 44 | ) |
| 45 | { |
| 46 | auto instruction = instructionAndArguments(_dialect, _expr); |
| 47 | if (!instruction) |
| 48 | return nullptr; |
| 49 | |
| 50 | static std::map<std::optional<EVMVersion>, std::unique_ptr<SimplificationRules>> evmRules; |
| 51 | |
| 52 | std::optional<EVMVersion> version; |
| 53 | if (yul::EVMDialect const* evmDialect = dynamic_cast<yul::EVMDialect const*>(&_dialect)) |
| 54 | version = evmDialect->evmVersion(); |
| 55 | |
| 56 | if (!evmRules[version]) |
| 57 | evmRules[version] = std::make_unique<SimplificationRules>(version); |
| 58 | |
| 59 | SimplificationRules& rules = *evmRules[version]; |
| 60 | assertThrow(rules.isInitialized(), OptimizerException, "Rule list not properly initialized."); |
| 61 | |
| 62 | for (auto const& rule: rules.m_rules[uint8_t(instruction->first)]) |
| 63 | { |
| 64 | rules.resetMatchGroups(); |
| 65 | if (rule.pattern.matches(_expr, _dialect, _ssaValues)) |
| 66 | if (!rule.feasible || rule.feasible()) |
| 67 | return &rule; |
| 68 | } |
| 69 | return nullptr; |
| 70 | } |
| 71 | |
| 72 | bool SimplificationRules::isInitialized() const |
| 73 | { |
nothing calls this directly
no test coverage detected