> In this case, the “GC” part of the name [RISCV-GC] means that extensions for integer multiplication and division, atomic instructions (memory usage synchroniz

> In this case, the “GC” part of the name [RISCV-GC] means that extensions for integer multiplication and division, atomic instructions (memory usage synchronization), as well as single- and double-precision floating-point operations are included. This only describes what the G stands for. Critically, the C stands for "compressed" instructions, which make a huge difference in code density.