Replace PyObject_CallFunctionObjArgs() with fastcall

* PyObject_CallFunctionObjArgs(func, NULL) => _PyObject_CallNoArg(func)
* PyObject_CallFunctionObjArgs(func, arg, NULL) => _PyObject_CallArg1(func, arg)

PyObject_CallFunctionObjArgs() allocates 40 bytes on the C stack and requires
extra work to "parse" C arguments to build a C array of PyObject*.

_PyObject_CallNoArg() and _PyObject_CallArg1() are simpler and don't allocate
memory on the C stack.

This change is part of the fastcall project. The change on listsort() is
related to the issue #23507.

1 files changed, 2 insertions, 4 deletions

diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 16b4fd7..853156e 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -98,8 +98,7 @@ _canresize(PyByteArrayObject *self)
 PyObject *
 PyByteArray_FromObject(PyObject *input)
 {
-    return PyObject_CallFunctionObjArgs((PyObject *)&PyByteArray_Type,
-                                        input, NULL);
+    return _PyObject_CallArg1((PyObject *)&PyByteArray_Type, input);
 }
 
 PyObject *
@@ -1985,8 +1984,7 @@ bytearray_fromhex_impl(PyTypeObject *type, PyObject *string)
 {
     PyObject *result = _PyBytes_FromHex(string, type == &PyByteArray_Type);
     if (type != &PyByteArray_Type && result != NULL) {
-        Py_SETREF(result, PyObject_CallFunctionObjArgs((PyObject *)type,
-                                                       result, NULL));
+        Py_SETREF(result, _PyObject_CallArg1((PyObject *)type, result));
     }
     return result;
 }