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bpo-39156: Break up COMPARE_OP into four logically distinct opcodes. (GH-17754)

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Break up COMPARE_OP into four logically distinct opcodes:
* COMPARE_OP for rich comparisons
* IS_OP for 'is' and 'is not' tests
* CONTAINS_OP for 'in' and 'is not' tests
* JUMP_IF_NOT_EXC_MATCH for checking exceptions in 'try-except' statements.
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Mark Shannon 2020-01-14 10:12:45 +00:00 • committed by GitHub
parent 62e3973395
commit 9af0e47b17
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17 changed files with 4909 additions and 4855 deletions
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Lib/importlib/_bootstrap_external.py
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@ -274,6 +274,7 @@ _code_type = type(_write_atomic.__code__)
# Python 3.9a0 3420 (add LOAD_ASSERTION_ERROR #34880)
# Python 3.9a0 3421 (simplified bytecode for with blocks #32949)
# Python 3.9a0 3422 (remove BEGIN_FINALLY, END_FINALLY, CALL_FINALLY, POP_FINALLY bytecodes #33387)
# Python 3.9a2 3423 (add IS_OP, CONTAINS_OP and JUMP_IF_NOT_EXC_MATCH bytecodes #39156)
#
# MAGIC must change whenever the bytecode emitted by the compiler may no
# longer be understood by older implementations of the eval loop (usually
@ -282,7 +283,7 @@ _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 = (3422).to_bytes(2, 'little') + b'\r\n'
MAGIC_NUMBER = (3423).to_bytes(2, 'little') + b'\r\n'
_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c
_PYCACHE = '__pycache__'