diff options
| -rw-r--r-- | Misc/NEWS.d/next/Core and Builtins/2020-10-04-01-02-58.bpo-41922.kHGT8I.rst | 2 | ||||
| -rw-r--r-- | Objects/enumobject.c | 19 |
2 files changed, 21 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-10-04-01-02-58.bpo-41922.kHGT8I.rst b/Misc/NEWS.d/next/Core and Builtins/2020-10-04-01-02-58.bpo-41922.kHGT8I.rst new file mode 100644 index 0000000..3c4de2c --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2020-10-04-01-02-58.bpo-41922.kHGT8I.rst @@ -0,0 +1,2 @@ +Speed up calls to ``reversed()`` by using the :pep:`590` ``vectorcall`` +calling convention. Patch by Dong-hee Na. diff --git a/Objects/enumobject.c b/Objects/enumobject.c index 4a83bb4..9d8449b 100644 --- a/Objects/enumobject.c +++ b/Objects/enumobject.c @@ -314,6 +314,24 @@ reversed_new_impl(PyTypeObject *type, PyObject *seq) return (PyObject *)ro; } +static PyObject * +reversed_vectorcall(PyObject *type, PyObject * const*args, + size_t nargsf, PyObject *kwnames) +{ + assert(PyType_Check(type)); + + if (!_PyArg_NoKwnames("reversed", kwnames)) { + return NULL; + } + + Py_ssize_t nargs = PyVectorcall_NARGS(nargsf); + if (!_PyArg_CheckPositional("reversed", nargs, 1, 1)) { + return NULL; + } + + return reversed_new_impl((PyTypeObject *)type, args[0]); +} + static void reversed_dealloc(reversedobject *ro) { @@ -445,4 +463,5 @@ PyTypeObject PyReversed_Type = { PyType_GenericAlloc, /* tp_alloc */ reversed_new, /* tp_new */ PyObject_GC_Del, /* tp_free */ + .tp_vectorcall = (vectorcallfunc)reversed_vectorcall, }; |