add_compact: Mean +- std dev: [fastpath_int] 16.7 ns +- 0.0 ns -> [main_int] 16.7 ns +- 0.0 ns: 1.00x slower
add_wide: Mean +- std dev: [fastpath_int] 31.6 ns +- 0.4 ns -> [main_int] 36.7 ns +- 0.8 ns: 1.16x slower
sub_compact: Mean +- std dev: [fastpath_int] 16.7 ns +- 0.0 ns -> [main_int] 16.7 ns +- 0.0 ns: 1.00x slower
sub_wide: Mean +- std dev: [fastpath_int] 31.4 ns +- 0.5 ns -> [main_int] 37.2 ns +- 0.7 ns: 1.18x slower

Geometric mean: 1.08x slower

import pyperf


def bench_add_compact(loops):
    a = 1
    b = 2
    it = range(loops)
    start = pyperf.perf_counter()
    for _ in it:
        a + b
    return pyperf.perf_counter() - start


def bench_add_wide(loops):
    a = 10_000_000_000
    b = 1
    it = range(loops)
    start = pyperf.perf_counter()
    for _ in it:
        a + b
    return pyperf.perf_counter() - start


def bench_sub_compact(loops):
    a = 1
    b = 2
    it = range(loops)
    start = pyperf.perf_counter()
    for _ in it:
        a + b
    return pyperf.perf_counter() - start


def bench_sub_wide(loops):
    a = 10_000_000_000
    b = 1
    it = range(loops)
    start = pyperf.perf_counter()
    for _ in it:
        a + b
    return pyperf.perf_counter() - start


def main() -> None:
    runner = pyperf.Runner()
    runner.bench_time_func("add_compact", bench_add_compact)
    runner.bench_time_func("add_wide", bench_add_wide)
    runner.bench_time_func("sub_compact", bench_sub_compact)
    runner.bench_time_func("sub_wide", bench_sub_wide)


if __name__ == "__main__":
    main()