We add freelist support to_PyLong_New (this was missed/left out in#126868). On the pyperformance suite this increases the percentage of allocations from freelist by roughly 1%. For comparison, the addition of the freelist to_PyLong_FromMedium increased the percentage by roughly 20%. Also note that_PyLong_New is used in the newPyLongWriter_Create (seehttps://peps.python.org/pep-0757/), so usage with external packages might be a bit higher.

Microbenchmark:

import pyperfdef bench_lshift(loops):    range_it = range(loops)    t0 = pyperf.perf_counter()    for ii in range_it:        _ = ii << 2    return pyperf.perf_counter() - t0if __name__ == "__main__":    runner = pyperf.Runner()    runner.bench_time_func("bench_lshift", bench_lshift)

results in:

Mean +- std dev: [main] 44.7 ns +- 3.0 ns -> [pr] 40.9 ns +- 2.3 ns: 1.09x faster

• Issue:Add freelist for compact int objects #126868