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bpo-37207: Use PEP 590 vectorcall to speed up set() constructor (GH-19019)

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Dong-hee Na 2020-03-17 02:17:38 +09:00 committed by GitHub
parent 5f104d56fa
commit 6ff79f6582
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2
Misc/NEWS.d/next/Core and Builtins/2020-03-15-23-16-00.bpo-37207.6XbnQA.rst Normal file
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@ -0,0 +1,2 @@
Speed up calls to ``set()`` by using the :pep:`590` ``vectorcall`` calling
convention. Patch by Dong-hee Na.

23
Objects/setobject.c
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@ -2014,6 +2014,28 @@ set_init(PySetObject *self, PyObject *args, PyObject *kwds)
return set_update_internal(self, iterable);
}
static PyObject*
set_vectorcall(PyObject *type, PyObject * const*args,
size_t nargsf, PyObject *kwnames)
{
assert(PyType_Check(type));
if (!_PyArg_NoKwnames("set", kwnames)) {
return NULL;
}
Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
if (!_PyArg_CheckPositional("set", nargs, 0, 1)) {
return NULL;
}
if (nargs) {
return make_new_set((PyTypeObject *)type, args[0]);
}
return make_new_set((PyTypeObject *)type, NULL);
}
static PySequenceMethods set_as_sequence = {
set_len, /* sq_length */
0, /* sq_concat */
@ -2162,6 +2184,7 @@ PyTypeObject PySet_Type = {
PyType_GenericAlloc, /* tp_alloc */
set_new, /* tp_new */
PyObject_GC_Del, /* tp_free */
.tp_vectorcall = set_vectorcall,
};
/* frozenset object ********************************************************/