Summarizing the interesting bit for non-compiler-specialists: This is an improvement to a part of GCC&#x27;s compiler optimizations which will make compiled-with-GCC programs slightly faster. The SPEC INT benchmark mean score went from 3717 to 3730 (0.5%), and SPEC FP from 4752 to 4775 (0.34%). Which doesn&#x27;t seem like much, but making a good compiler in practice tends to mean stacking lots and lots of improvements of this magnitude on top of each other.