8000 bpo-37207: Use PEP 590 vectorcall to speed up frozenset() by corona10 · Pull Request #19053 · python/cpython · GitHub
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bpo-37207: Use PEP 590 vectorcall to speed up frozenset() #19053

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Merged
merged 7 commits into from
Mar 18, 2020
Merged

bpo-37207: Use PEP 590 vectorcall to speed up frozenset() #19053

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d467294
bpo-37207: Use PEP 590 vectorcall to speed up frozenset()
corona10 Mar 17, 2020
b3748fb
bpo-37207: Apply Victor's review
corona10 Mar 18, 2020
27db91d
bpo-37207: Use PEP 590 vectorcall to speed up frozenset()
corona10 Mar 17, 2020
b2f823a
bpo-37207: git fix
corona10 Mar 18, 2020
f13f82d
bpo-37207: Apply Victor's codereview
corona10 Mar 18, 2020
68a0b8c
bpo-37207: Add comment
corona10 Mar 18, 2020
b99ee8a
bpo-37207: Apply Victor's codereview
corona10 Mar 18, 2020
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bpo-37207: Apply Victor's review
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@corona10
corona10 committed Mar 18, 2020
commit b3748fb9c4021ad57a11d597e20fb640bc4c581d
68 changes: 35 additions & 33 deletions Objects/setobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1063,36 +1063,51 @@ make_new_set_basetype(PyTypeObject *type, PyObject *iterable)
/* The empty frozenset is a singleton */
static PyObject *emptyfrozenset = NULL;

static PyObject *
make_new_frozenset(PyTypeObject *type, PyObject *iterable)
{
if (iterable != NULL) {
/* frozenset(f) is idempotent */
if (PyFrozenSet_CheckExact(iterable)) {
Py_INCREF(iterable);
return iterable;
}
PyObject *res = make_new_set((PyTypeObject *)type, iterable);
if (res == NULL || PySet_GET_SIZE(res)) {
return res;
}
Py_DECREF(res);
}

// The empty frozenset is a singleton
if (emptyfrozenset == NULL) {
emptyfrozenset = make_new_set((PyTypeObject *)type, NULL);
}
Py_XINCREF(emptyfrozenset);
return emptyfrozenset;
}

static PyObject *
frozenset_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
PyObject *iterable = NULL, *result;
PyObject *iterable = NULL;

if (type == &PyFrozenSet_Type && !_PyArg_NoKeywords("frozenset", kwds))
if (type == &PyFrozenSet_Type && !_PyArg_NoKeywords("frozenset", kwds)) {
return NULL;
}

if (!PyArg_UnpackTuple(args, type->tp_name, 0, 1, &iterable))
if (!PyArg_UnpackTuple(args, type->tp_name, 0, 1, &iterable)) {
return NULL;
}

if (type != &PyFrozenSet_Type)
if (type != &PyFrozenSet_Type) {
return make_new_set(type, iterable);
}

if (iterable != NULL) {
/* frozenset(f) is idempotent */
if (PyFrozenSet_CheckExact(iterable)) {
Py_INCREF(iterable);
return iterable;
}
result = make_new_set(type, iterable);
if (result == NULL || PySet_GET_SIZE(result))
return result;
Py_DECREF(result);
return make_new_frozenset(type, iterable);
}
/* The empty frozenset is a singleton */
if (emptyfrozenset == NULL)
emptyfrozenset = make_new_set(type, NULL);
Py_XINCREF(emptyfrozenset);
return emptyfrozenset;
return make_new_frozenset(type, NULL);
}

static PyObject *
Expand All @@ -1111,23 +1126,10 @@ frozenset_vectorcall(PyObject *type, PyObject * const*args,
}

if (nargs) {
if (PyFrozenSet_CheckExact(args[0])) {
Py_INCREF(args[0]);
return args[0];
}
PyObject *res = make_new_set((PyTypeObject *)type, args[0]);
if (res == NULL || PySet_GET_SIZE(res)) {
return res;
}
Py_DECREF(res);
return make_new_frozenset((PyTypeObject *)type, args[0]);
}

// The empty frozenset is a singleton
if (emptyfrozenset == NULL) {
emptyfrozenset = make_new_set((PyTypeObject *)type, NULL);
}
Py_XINCREF(emptyfrozenset);
return emptyfrozenset;
return make_new_frozenset((PyTypeObject *)type, NULL);
}

static PyObject *
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