gh-143192 Avoid incref/decref pair in long_bitwise

[eendebakpt]

By avoiding the incref/decref on the input arguments we avoid refcount contention in the FT build. Benchmark using Tools/ftscalingbench/ftscalingbench.py:

import random
data = {'a': random.randint(int(10e45), int(10e46)), 'b': random.randint(int(10e45), int(10e46))}

@register_benchmark
def long_bitwise():
    long_constant = data['a']
    long_constant2 = data['b']
    N = 1000 * WORK_SCALE
  
    for i in range(N):
        long_constant & long_constant2
        long_constant | long_constant2
        long_constant ^ long_constant2

Main:

Running benchmarks with 8 threads
long_bitwise               7.5x slower

PR

Running benchmarks with 8 threads
long_bitwise               5.4x faster

• Issue: Avoid incref/decref in long_bitwise #143192