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| author | Brandt Bucher <brandt@python.org> | 2021-10-27 09:45:35 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-10-27 09:45:35 (GMT) |
| commit | 82a662e5216a9b3969054c540a759a9493468510 (patch) | |
| tree | 51bf9b433828dfd6d58f172097cf06202b54df9a /Doc/whatsnew/3.11.rst | |
| parent | 19a6c41e56f129a67e2a3c96464ba893a97236f7 (diff) | |
| download | cpython-82a662e5216a9b3969054c540a759a9493468510.zip cpython-82a662e5216a9b3969054c540a759a9493468510.tar.gz cpython-82a662e5216a9b3969054c540a759a9493468510.tar.bz2 | |
bpo-44511: Improve the bytecode for class and mapping patterns (GH-26922)
* Refactor mapping patterns and speed up class patterns.
* Simplify MATCH_KEYS and MATCH_CLASS.
* Add COPY opcode.
Diffstat (limited to 'Doc/whatsnew/3.11.rst')
| -rw-r--r-- | Doc/whatsnew/3.11.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.11.rst b/Doc/whatsnew/3.11.rst index 7b3ce9b..21ad466 100644 --- a/Doc/whatsnew/3.11.rst +++ b/Doc/whatsnew/3.11.rst @@ -308,6 +308,16 @@ CPython bytecode changes fashion as :opcode:`CALL_METHOD`, but also supports keyword arguments. Works in tandem with :opcode:`LOAD_METHOD`. +* Removed ``COPY_DICT_WITHOUT_KEYS``. + +* :opcode:`MATCH_CLASS` and :opcode:`MATCH_KEYS` no longer push an additional + boolean value indicating whether the match succeeded or failed. Instead, they + indicate failure with :const:`None` (where a tuple of extracted values would + otherwise be). + +* Added :opcode:`COPY`, which pushes the *i*-th item to the top of the stack. + The item is not removed from its original location. + Deprecated ========== |