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GH-96793: Change FOR_ITER to not pop the iterator on exhaustion. (GH-96801)

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Change FOR_ITER to have the same stack effect regardless of whether it branches or not.
Performance is unchanged as FOR_ITER (and specialized forms jump over the cleanup code).
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Mark Shannon 2022-10-27 03:55:03 -07:00 • committed by GitHub
parent e60892f9db
commit 22863df7ca
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14 changed files with 277 additions and 247 deletions
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Lib/opcode.py
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@ -78,6 +78,8 @@ def_op('CACHE', 0)
def_op('POP_TOP', 1)
def_op('PUSH_NULL', 2)
def_op('END_FOR', 4)
def_op('NOP', 9)
def_op('UNARY_POSITIVE', 10)
def_op('UNARY_NEGATIVE', 11)