LLVM mostly uses size_t like most C/C++ programs, which either use size_t or int for everything, both of which are handled well by RISC-V. > Maybe looking at l

LLVM mostly uses size_t like most C/C++ programs, which either use size_t or int for everything, both of which are handled well by RISC-V. > Maybe looking at libgmp could be interesting, though I suspect absolute numbers will not be meaningful, and there's no baseline to compare them to. Realistically, nobody cares about BigInt addition performance, considering there is no GMP implementarion using SIMD, or even any using dependency breaking to get beyond 64-bit per cycle. I whipped up a quick AVX-512 implementation that was 2x faster than libgmp on Zen4 (which has 256-bit SIMD ALUs). On RISC-V you'd just use RVV to do BigInt stuff.