During March 2025, Michal Jireš enhanced the rust-lang/gcc repository by updating and expanding documentation for new Incremental Link Time Optimization (LTO) features. He focused on clarifying the usage and behavior of the -flto-incremental and -flto-incremental-cache-size flags, as well as detailing the cache option for -flto-partition. Working primarily in C and leveraging his expertise in build systems and compiler optimization, Michal regenerated the common.opt.urls file to ensure all references reflected the latest options. His contributions improved documentation accuracy, streamlined onboarding for GCC LTO users, and reduced the risk of misconfiguration in complex build environments.