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| author | Carl Meyer <carl@oddbird.net> | 2023-04-24 22:22:14 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-04-24 22:22:14 (GMT) |
| commit | 0dc8b50d33208e9ca4fc3d959c6798529731f020 (patch) | |
| tree | 822102a5177183fc6ad7075bd74a02a5633edc52 /Lib/importlib | |
| parent | 22bed58e531ce780d91f3364c5ace98fad28c2e8 (diff) | |
| download | cpython-0dc8b50d33208e9ca4fc3d959c6798529731f020.zip cpython-0dc8b50d33208e9ca4fc3d959c6798529731f020.tar.gz cpython-0dc8b50d33208e9ca4fc3d959c6798529731f020.tar.bz2 | |
gh-87729: add LOAD_SUPER_ATTR instruction for faster super() (#103497)
This speeds up `super()` (by around 85%, for a simple one-level
`super().meth()` microbenchmark) by avoiding allocation of a new
single-use `super()` object on each use.
Diffstat (limited to 'Lib/importlib')
| -rw-r--r-- | Lib/importlib/_bootstrap_external.py | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py index c0c757d..74a78bc 100644 --- a/Lib/importlib/_bootstrap_external.py +++ b/Lib/importlib/_bootstrap_external.py @@ -439,7 +439,8 @@ _code_type = type(_write_atomic.__code__) # Python 3.12a7 3523 (Convert COMPARE_AND_BRANCH back to COMPARE_OP) # Python 3.12a7 3524 (Shrink the BINARY_SUBSCR caches) # Python 3.12b1 3525 (Shrink the CALL caches) -# Python 3.12a7 3526 (Add instrumentation support) +# Python 3.12b1 3526 (Add instrumentation support) +# Python 3.12b1 3527 (Optimize super() calls) # Python 3.13 will start with 3550 @@ -456,7 +457,7 @@ _code_type = type(_write_atomic.__code__) # Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array # in PC/launcher.c must also be updated. -MAGIC_NUMBER = (3526).to_bytes(2, 'little') + b'\r\n' +MAGIC_NUMBER = (3527).to_bytes(2, 'little') + b'\r\n' _RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c |