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GH-120507: Lower the BEFORE_WITH and BEFORE_ASYNC_WITH instructions. (#120640)

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* Remove BEFORE_WITH and BEFORE_ASYNC_WITH instructions.

* Add LOAD_SPECIAL instruction

* Reimplement `with` and `async with` statements using LOAD_SPECIAL
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Mark Shannon 2024-06-18 12:17:46 +01:00 • committed by GitHub
parent 73dc1c678e
commit 9cefcc0ee7
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22 changed files with 663 additions and 651 deletions
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Lib/importlib/_bootstrap_external.py
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@ -474,8 +474,9 @@ _code_type = type(_write_atomic.__code__)
# Python 3.13a6 3570 (Add __firstlineno__ class attribute)
# Python 3.14a1 3600 (Add LOAD_COMMON_CONSTANT)
# Python 3.14a1 3601 (Fix miscompilation of private names in generic classes)
# Python 3.14a1 3602 (Add LOAD_SPECIAL. Remove BEFORE_WITH and BEFORE_ASYNC_WITH)
# Python 3.15 will start with 3700
# Python 3.15 will start with 3650
# Please don't copy-paste the same pre-release tag for new entries above!!!
# You should always use the *upcoming* tag. For example, if 3.12a6 came out
@ -490,7 +491,7 @@ _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 = (3601).to_bytes(2, 'little') + b'\r\n'
MAGIC_NUMBER = (3602).to_bytes(2, 'little') + b'\r\n'
_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c