Move variable declarations and computations outside of loops when their values don't change between iterations. This reduces memory allocations and avoids redundant computations, improving performance. Example - Before: ```cpp for (const auto& resource_entry : manager->held_locks_) { for (const auto& held_lock : resource_entry.second) { Local lock_info = CreateLockInfoObject(...); // Use lock_info } } ``` Example - After: ```cpp Local lock_info; for (const auto& resource_entry : manager->held_locks_) { for (const auto& held_lock : resource_entry.second) { lock_info = CreateLockInfoObject(...); // Use lock_info } } ``` Similarly, cache computed values that are used repeatedly: ```cpp // Before: Computing in every call std::string normalised_cache_dir = NormalisePath(cache_dir); // After: Store as member variable class CompileCacheHandler { std::string normalised_cache_dir_; // Compute once in constructor }; ```