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Title: bpo-46055: Speed up binary shifting operators by xuxinhang · Pull Request #30044 · python/cpython · GitHub

Open Graph Title: bpo-46055: Speed up binary shifting operators by xuxinhang · Pull Request #30044 · python/cpython

X Title: bpo-46055: Speed up binary shifting operators by xuxinhang · Pull Request #30044 · python/cpython

Description: Inspired by https://bugs.python.org/issue44946, I found there were no special shortcuts for shifting operation applied to "medium value" long object. So I modified CPython's VM to accelerate my python project where there is plenty of binary shifting operation. I guess somebody else might also need it. Thanks. https://bugs.python.org/issue46055

Open Graph Description: Inspired by https://bugs.python.org/issue44946, I found there were no special shortcuts for shifting operation applied to "medium value" long object. So I modified CPython's VM to acc...

X Description: Inspired by https://bugs.python.org/issue44946, I found there were no special shortcuts for shifting operation applied to "medium value" long object. So I modified CPython&#39...

Opengraph URL: https://github.com/python/cpython/pull/30044

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bpo-46055: Speed up binary shifting operators https://github.com/python/cpython/pull/30044/files#top
Show all changes 18 commits https://github.com/python/cpython/pull/30044/files
7b11d7d Perf: Accelerate binary shift op. xuxinhang Dec 11, 2021 https://github.com/python/cpython/pull/30044/commits/7b11d7d64675b5d84c6a35ba2e18783b27227d58
403652a Fix: Ubuntu gcc segment fault. xuxinhang Dec 12, 2021 https://github.com/python/cpython/pull/30044/commits/403652a9672037daaa7dfd013009a0be645ac845
dcd2796 Let PyLong_New accept a negtive size. xuxinhang Dec 12, 2021 https://github.com/python/cpython/pull/30044/commits/dcd27965954068aaa79b0a84bfae807bea5f1d58
25bbf4d Fix: Use Py_ARITHMETIC_RIGHT_SHIFT to avoid the undefined padding bah… xuxinhang Dec 12, 2021 https://github.com/python/cpython/pull/30044/commits/25bbf4de2f11c0177c8e5f2c27338a8ea6182730
b2ef93d Style: PEP7: add braces. xuxinhang Dec 12, 2021 https://github.com/python/cpython/pull/30044/commits/b2ef93da5083531d2f7dd5c1d7eb08523a57ee30
7d2203f Fix: Bypass undefined shift operator behavior xuxinhang Dec 13, 2021 https://github.com/python/cpython/pull/30044/commits/7d2203f2777e1650c36c3c3a20856c7752a4ab9d
932ad87 Revert "Let PyLong_New accept a negtive size." xuxinhang Dec 22, 2021 https://github.com/python/cpython/pull/30044/commits/932ad87e7c431cbeae649da01cc0267d41200c8c
596b8cf Revert: Remove additional inline keywords. xuxinhang Dec 22, 2021 https://github.com/python/cpython/pull/30044/commits/596b8cfba788ceb2614348d93beb0e9084bc8684
6545e9a Refactor: Simpilify code by using _PyLong_FromSTwoDigit xuxinhang Dec 23, 2021 https://github.com/python/cpython/pull/30044/commits/6545e9a83ca95ad27b003a5ad4d789ae2bd3ff20
7f80cd9 Fix: Wrong rshift result. xuxinhang Dec 23, 2021 https://github.com/python/cpython/pull/30044/commits/7f80cd924c96046f61077b4de68894c4fb7f185a
b24c7dc Test: More testcases. xuxinhang Dec 23, 2021 https://github.com/python/cpython/pull/30044/commits/b24c7dcc7da47c69519a693401c9f66af742a030
c00a963 Refactor: Clean code. xuxinhang Dec 23, 2021 https://github.com/python/cpython/pull/30044/commits/c00a963661a9a48a9b29119b5f7eded570a37d77
b7ad599 Revert: Revert unrelated code. xuxinhang Dec 23, 2021 https://github.com/python/cpython/pull/30044/commits/b7ad599894bdbf6aa3d78c7d37342f81de225f72
c359521 Docs: A couple more things. xuxinhang Dec 24, 2021 https://github.com/python/cpython/pull/30044/commits/c359521056e3078b16f73a24c24a90e63784dc08
241da4c Revert: medium_value xuxinhang Dec 24, 2021 https://github.com/python/cpython/pull/30044/commits/241da4c272d4252a9cf71c3f29230152c50ce205
9ed09aa Add attribution; fix typo mdickinson Dec 27, 2021 https://github.com/python/cpython/pull/30044/commits/9ed09aad05cb701c30995ed9516d0dfb241721ab
c24ad0a Merge branch 'main' into feat/binary_shift_optimization mdickinson Dec 27, 2021 https://github.com/python/cpython/pull/30044/commits/c24ad0a96db313d8780e14cb50db83dd8222a049
59672cf Merge remote-tracking branch 'upstream/main' into feat/binary_shift_o… mdickinson Dec 27, 2021 https://github.com/python/cpython/pull/30044/commits/59672cfbb4c013a602676df0157be377174deb45
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