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gh-134584: Eliminate redundant refcounting from _CALL_TYPE_1 #135818

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Merged
Fidget-Spinner merged 13 commits into from
Dec 23, 2025
Merged

gh-134584: Eliminate redundant refcounting from _CALL_TYPE_1 #135818

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85ab405
Eliminate redundant refcounting from _CALL_TYPE_1
tomasr8 Jun 23, 2025
f927209
Add a new uop
tomasr8 Jun 23, 2025
bbf1c9d
Add news entry
tomasr8 Jun 23, 2025
81f9b44
Do not close callable stackref
tomasr8 Jun 23, 2025
6934f63
Update remove_unneeded_uops with new uops
tomasr8 Jun 23, 2025
e86897a
Do not close arg
tomasr8 Dec 22, 2025
bd62d15
Merge remote-tracking branch 'upstream/main' into jit-refcount-call-type
tomasr8 Dec 22, 2025
ca15e78
Update test
tomasr8 Dec 22, 2025
bcb805d
Rename _SWAP_.. to _SHUFFLE_2_..
tomasr8 Dec 22, 2025
56fa30f
Merge remote-tracking branch 'upstream/main' into jit-refcount-call-type
tomasr8 Dec 23, 2025
225d6db
Regenerate files
tomasr8 Dec 23, 2025
bba9435
address review
Fidget-Spinner Dec 23, 2025
6ffffa6
Merge remote-tracking branch 'upstream/main' into pr/135818
Fidget-Spinner Dec 23, 2025
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Do not close callable stackref
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@tomasr8
tomasr8 committed Jun 23, 2025
commit 81f9b443c833845fbf3c31f6a4bef413b8163a18
4 changes: 3 additions & 1 deletion Python/bytecodes.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5361,8 +5361,10 @@ dummy_func(
tier2 op(_SWAP_CALL_ONE_LOAD_CONST_INLINE_BORROW, (ptr/4, callable, null, arg -- value, a)) {
PyStackRef_CLOSE(arg);
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@brandtbucher brandtbucher Jul 1, 2025

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This shouldn't be here, right? Because we're leaving arg on the stack in a?

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@tomasr8 tomasr8 Dec 22, 2025

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Veery late response 😅 but I changed and renamed this op to _SHUFFLE_2_LOAD_CONST_INLINE_BORROW since it's analogous to the recently added _SHUFFLE_3_LOAD_CONST_INLINE_BORROW. This also resolves the issue with closing the ref! :)

(void)null; // Silence compiler warnings about unused variables
(void)callable;
DEAD(null);
PyStackRef_CLOSE(callable);
DEAD(callable);
assert(_Py_IsImmortal(PyStackRef_AsPyObjectBorrow(callable)));
value = PyStackRef_FromPyObjectBorrow(ptr);
a = arg;
}
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13 changes: 4 additions & 9 deletions Python/executor_cases.c.h
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