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gh-144005: Eliminate redundant refcounting in the JIT for BINARY_OP_EXTEND (#144006)

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AN Long 2026-01-24 02:19:01 +09:00 • committed by GitHub
parent 70e67f579e
commit 2f42f83344
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11 changed files with 109 additions and 53 deletions
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13
Python/bytecodes.c
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@ -829,7 +829,7 @@ dummy_func(
DEOPT_IF(!res);
}
op(_BINARY_OP_EXTEND, (descr/4, left, right -- res)) {
op(_BINARY_OP_EXTEND, (descr/4, left, right -- res, l, r)) {
PyObject *left_o = PyStackRef_AsPyObjectBorrow(left);
PyObject *right_o = PyStackRef_AsPyObjectBorrow(right);
assert(INLINE_CACHE_ENTRIES_BINARY_OP == 5);
@ -838,13 +838,18 @@ dummy_func(
STAT_INC(BINARY_OP, hit);
PyObject *res_o = d->action(left_o, right_o);
DECREF_INPUTS();
ERROR_IF(res_o == NULL);
if (res_o == NULL) {
ERROR_NO_POP();
}
res = PyStackRef_FromPyObjectSteal(res_o);
l = left;
r = right;
DEAD(left);
DEAD(right);
}
macro(BINARY_OP_EXTEND) =
unused/1 + _GUARD_BINARY_OP_EXTEND + rewind/-4 + _BINARY_OP_EXTEND;
unused/1 + _GUARD_BINARY_OP_EXTEND + rewind/-4 + _BINARY_OP_EXTEND + POP_TOP + POP_TOP;
macro(BINARY_OP_INPLACE_ADD_UNICODE) =
_GUARD_TOS_UNICODE + _GUARD_NOS_UNICODE + unused/5 + _BINARY_OP_INPLACE_ADD_UNICODE;