Function optimiseBytecode

packages/utils/src/script.ts:165–195

(
  script: Script,
  locationData: FullLocationData,
  logs: LogEntry[],
  requires: RequireStatement[],
  sourceTags: SourceTagEntry[],
  constructorParamLength: number,
  runs: number = 1000,
)

}

export function optimiseBytecode(
  script: Script,
  locationData: FullLocationData,
  logs: LogEntry[],
  requires: RequireStatement[],
  sourceTags: SourceTagEntry[],
  constructorParamLength: number,
  runs: number = 1000,
): OptimiseBytecodeResult {
  for (let i = 0; i < runs; i += 1) {
    const oldScript = script;
    const {
      script: newScript,
      locationData: newLocationData,
      logs: newLogs,
      requires: newRequires,
      sourceTags: newSourceTags,
    } = replaceOps(script, locationData, logs, requires, sourceTags, constructorParamLength, optimisationReplacements);

    // Break on fixed point
    if (scriptToAsm(oldScript) === scriptToAsm(newScript)) break;

    script = newScript;
    locationData = newLocationData;
    logs = newLogs;
    requires = newRequires;
    sourceTags = newSourceTags;
  }

  return { script, locationData, logs, requires, sourceTags: reconcileScopeCleanupTags(script, sourceTags) };
}

const SCOPE_CLEANUP_OPCODES = [Op.OP_DROP, Op.OP_NIP, Op.OP_2DROP];