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gh-87729: add LOAD_SUPER_ATTR instruction for faster super() (#103497)

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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.
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Carl Meyer 2023-04-24 16:22:14 -06:00 • committed by GitHub
parent 22bed58e53
commit 0dc8b50d33
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18 changed files with 783 additions and 408 deletions
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5
Lib/opcode.py
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@ -196,7 +196,7 @@ hasfree.append(138)
def_op('DELETE_DEREF', 139)
hasfree.append(139)
jrel_op('JUMP_BACKWARD', 140) # Number of words to skip (backwards)
name_op('LOAD_SUPER_ATTR', 141)
def_op('CALL_FUNCTION_EX', 142) # Flags
def_op('EXTENDED_ARG', 144)
@ -264,6 +264,9 @@ pseudo_op('JUMP', 260, ['JUMP_FORWARD', 'JUMP_BACKWARD'])
pseudo_op('JUMP_NO_INTERRUPT', 261, ['JUMP_FORWARD', 'JUMP_BACKWARD_NO_INTERRUPT'])
pseudo_op('LOAD_METHOD', 262, ['LOAD_ATTR'])
pseudo_op('LOAD_SUPER_METHOD', 263, ['LOAD_SUPER_ATTR'])
pseudo_op('LOAD_ZERO_SUPER_METHOD', 264, ['LOAD_SUPER_ATTR'])
pseudo_op('LOAD_ZERO_SUPER_ATTR', 265, ['LOAD_SUPER_ATTR'])
MAX_PSEUDO_OPCODE = MIN_PSEUDO_OPCODE + len(_pseudo_ops) - 1