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bpo-42161: Hoist the _PyLong_GetOne() call out of the inner loop. (GH-30656)

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Raymond Hettinger 2022-01-18 02:02:35 -06:00 • committed by GitHub
parent a287b31bcb
commit 243c31667c
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2 changed files with 5 additions and 3 deletions
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6
Objects/enumobject.c
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@ -16,9 +16,10 @@ class reversed "reversedobject *" "&PyReversed_Type"
typedef struct {
PyObject_HEAD
Py_ssize_t en_index; /* current index of enumeration */
PyObject* en_sit; /* secondary iterator of enumeration */
PyObject* en_sit; /* secondary iterator of enumeration */
PyObject* en_result; /* result tuple */
PyObject* en_longindex; /* index for sequences >= PY_SSIZE_T_MAX */
PyObject* one; /* borrowed reference */
} enumobject;
@ -78,6 +79,7 @@ enum_new_impl(PyTypeObject *type, PyObject *iterable, PyObject *start)
Py_DECREF(en);
return NULL;
}
en->one = _PyLong_GetOne(); /* borrowed reference */
return (PyObject *)en;
}
@ -157,7 +159,7 @@ enum_next_long(enumobject *en, PyObject* next_item)
}
next_index = en->en_longindex;
assert(next_index != NULL);
stepped_up = PyNumber_Add(next_index, _PyLong_GetOne());
stepped_up = PyNumber_Add(next_index, en->one);
if (stepped_up == NULL) {
Py_DECREF(next_item);
return NULL;