Yury Selivanov added the comment: Attaching a new patch -- rewritten to optimize -, *, +, -=, *= and +=. I also removed the optimization of [] operator -- that should be done in a separate patch and in a separate issue.
Some nano-benchmarks (best of 3): python -m timeit "sum([x + x + 1 for x in range(100)])" 2.7: 7.71 3.5: 8.54 3.6: 7.33 python -m timeit "sum([x - x - 1 for x in range(100)])" 2.7: 7.81 3.5: 8.59 3.6: 7.57 python -m timeit "sum([x * x * 1 for x in range(100)])" 2.7: 9.28 3.5: 10.6 3.6: 9.44 Python 3.6 vs 3.5 (spectral_norm, rigorous run): Min: 0.315917 -> 0.276785: 1.14x faster Avg: 0.321006 -> 0.284909: 1.13x faster Zach, thanks a lot for the research! I'm glad that unpack_sequence finally proved to be irrelevant. Could you please take a look at the updated patch? ---------- Added file: http://bugs.python.org/file41796/fastint1.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue21955> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
