gh-119180: Add LOAD_COMMON_CONSTANT opcode (#119321)

The PEP 649 implementation will require a way to load NotImplementedError
from the bytecode. @markshannon suggested implementing this by converting
LOAD_ASSERTION_ERROR into a more general mechanism for loading constants.

This PR adds this new opcode. I will work on the rest of the implementation
of the PEP separately.

Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
This commit is contained in:
Jelle Zijlstra 2024-05-21 20:46:39 -04:00 committed by GitHub
parent 506b1a3ff6
commit 98e855fcc1
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22 changed files with 337 additions and 288 deletions

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@ -472,8 +472,9 @@ _code_type = type(_write_atomic.__code__)
# Python 3.13a1 3568 (Change semantics of END_FOR)
# Python 3.13a5 3569 (Specialize CONTAINS_OP)
# Python 3.13a6 3570 (Add __firstlineno__ class attribute)
# Python 3.14a1 3600 (Add LOAD_COMMON_CONSTANT)
# Python 3.14 will start with 3600
# Python 3.15 will start with 3700
# 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
@ -488,7 +489,7 @@ _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 = (3570).to_bytes(2, 'little') + b'\r\n'
MAGIC_NUMBER = (3571).to_bytes(2, 'little') + b'\r\n'
_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c