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bpo-43693: Add the MAKE_CELL opcode and interleave fast locals offsets. (gh-26396)

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This moves logic out of the frame initialization code and into the compiler and eval loop.  Doing so simplifies the runtime code and allows us to optimize it better.

https://bugs.python.org/issue43693
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Eric Snow 2021-06-07 16:52:00 -06:00 • committed by GitHub
parent e915db3e9e
commit 631f9938b1
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16 changed files with 4469 additions and 4234 deletions
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Lib/importlib/_bootstrap_external.py
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@ -357,6 +357,7 @@ _code_type = type(_write_atomic.__code__)
# Python 3.11a1 3452 (drop nlocals from marshaled code objects)
# Python 3.11a1 3453 (add co_fastlocalnames and co_fastlocalkinds)
# Python 3.11a1 3454 (compute cell offsets relative to locals bpo-43693)
# Python 3.11a1 3455 (add MAKE_CELL bpo-43693)
#
# MAGIC must change whenever the bytecode emitted by the compiler may no
@ -366,7 +367,7 @@ _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 = (3454).to_bytes(2, 'little') + b'\r\n'
MAGIC_NUMBER = (3455).to_bytes(2, 'little') + b'\r\n'
_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c
_PYCACHE = '__pycache__'