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gh-119180: Add LOAD_COMMON_CONSTANT opcode (#119321)

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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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GPG key ID: B5690EEEBB952194
22 changed files with 337 additions and 288 deletions
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8
Lib/dis.py
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@ -11,6 +11,7 @@ from opcode import (
_cache_format,
_inline_cache_entries,
_nb_ops,
_common_constants,
_intrinsic_1_descs,
_intrinsic_2_descs,
_specializations,
@ -44,6 +45,7 @@ LOAD_ATTR = opmap['LOAD_ATTR']
LOAD_SUPER_ATTR = opmap['LOAD_SUPER_ATTR']
CALL_INTRINSIC_1 = opmap['CALL_INTRINSIC_1']
CALL_INTRINSIC_2 = opmap['CALL_INTRINSIC_2']
LOAD_COMMON_CONSTANT = opmap['LOAD_COMMON_CONSTANT']
LOAD_FAST_LOAD_FAST = opmap['LOAD_FAST_LOAD_FAST']
STORE_FAST_LOAD_FAST = opmap['STORE_FAST_LOAD_FAST']
STORE_FAST_STORE_FAST = opmap['STORE_FAST_STORE_FAST']
@ -601,6 +603,12 @@ class ArgResolver:
argrepr = _intrinsic_1_descs[arg]
elif deop == CALL_INTRINSIC_2:
argrepr = _intrinsic_2_descs[arg]
elif deop == LOAD_COMMON_CONSTANT:
obj = _common_constants[arg]
if isinstance(obj, type):
argrepr = obj.__name__
else:
argrepr = repr(obj)
return argval, argrepr
def get_instructions(x, *, first_line=None, show_caches=None, adaptive=False):