Construct FunctionCreationLocal

Kay Hayen

2024-05-07 11:23

Performance Diagrams

Source Code with Constructfor x in itertools.repeat(None, 50000):
    calledRepeatedly()

print("OK.")

#     Python test originally created or extracted from other peoples work. The
#     parts from me are licensed as below. It is at least Free Software where
#     it's copied from other people. In these cases, that will normally be
#     indicated.
#
#     Licensed under the Apache License, Version 2.0 (the "License");
#     you may not use this file except in compliance with the License.
#     You may obtain a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#     Unless required by applicable law or agreed to in writing, software
#     distributed under the License is distributed on an "AS IS" BASIS,
#     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#     See the License for the specific language governing permissions and
#     limitations under the License.

Source Code without Constructfor x in itertools.repeat(None, 50000):
    calledRepeatedly()

print("OK.")

#     Python test originally created or extracted from other peoples work. The
#     parts from me are licensed as below. It is at least Free Software where
#     it's copied from other people. In these cases, that will normally be
#     indicated.
#
#     Licensed under the Apache License, Version 2.0 (the "License");
#     you may not use this file except in compliance with the License.
#     You may obtain a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#     Unless required by applicable law or agreed to in writing, software
#     distributed under the License is distributed on an "AS IS" BASIS,
#     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#     See the License for the specific language governing permissions and
#     limitations under the License.

Context Diff of Source Code

	Construct			Baseline
	5			5
	6			6
	7	def calledRepeatedly():		7	def calledRepeatedly():
	8	# We measure making a local function that will remain unused.		8	# We measure making a local function that will remain unused.
	9	# construct_begin		9	# construct_begin
n	10	def empty():	n	10
	11	pass		11
	12			12
	13	# construct_alternative		13	# construct_alternative
t	14		t	14	empty = 1
	15			15	# construct_end
	16			16
	17	return empty		17	return empty
	18			18
	19			19
	20	for x in itertools.repeat(None, 50000):		20	for x in itertools.repeat(None, 50000):

Context Diff of Generated Code

	Construct			Baseline
	31			31
	32	PyObject *module___main__;		32	PyObject *module___main__;
	33	PyDictObject *moduledict___main__;		33	PyDictObject *moduledict___main__;
	34			34
	35	/* The declarations of module constants used, if any. */		35	/* The declarations of module constants used, if any. */
n	36	static PyObject *mod_consts[13];	n	36	static PyObject *mod_consts[12];
	37	#ifndef __NUITKA_NO_ASSERT__		37	#ifndef __NUITKA_NO_ASSERT__
n	38	static Py_hash_t mod_consts_hash[13];	n	38	static Py_hash_t mod_consts_hash[12];
	39	#endif		39	#endif
	40			40
	41	static PyObject *module_filename_obj = NULL;		41	static PyObject *module_filename_obj = NULL;
	42			42
	43	/* Indicator if this modules private constants were created yet. */		43	/* Indicator if this modules private constants were created yet. */
	48	if (constants_created == false) {		48	if (constants_created == false) {
	49	loadConstantsBlob(tstate, &mod_consts[0], UNTRANSLATE("__main__"));		49	loadConstantsBlob(tstate, &mod_consts[0], UNTRANSLATE("__main__"));
	50	constants_created = true;		50	constants_created = true;
	51			51
	52	#ifndef __NUITKA_NO_ASSERT__		52	#ifndef __NUITKA_NO_ASSERT__
n	53	for (int i = 0; i < 13; i++) {	n	53	for (int i = 0; i < 12; i++) {
	54	mod_consts_hash[i] = DEEP_HASH(tstate, mod_consts[i]);		54	mod_consts_hash[i] = DEEP_HASH(tstate, mod_consts[i]);
	55	}		55	}
	56	#endif		56	#endif
	57	}		57	}
	58	}		58	}
	68	#ifndef __NUITKA_NO_ASSERT__		68	#ifndef __NUITKA_NO_ASSERT__
	69	void checkModuleConstants___main__(PyThreadState *tstate) {		69	void checkModuleConstants___main__(PyThreadState *tstate) {
	70	// The module may not have been used at all, then ignore this.		70	// The module may not have been used at all, then ignore this.
	71	if (constants_created == false) return;		71	if (constants_created == false) return;
	72			72
n	73	for (int i = 0; i < 13; i++) {	n	73	for (int i = 0; i < 12; i++) {
	74	assert(mod_consts_hash[i] == DEEP_HASH(tstate, mod_consts[i]));		74	assert(mod_consts_hash[i] == DEEP_HASH(tstate, mod_consts[i]));
	75	CHECK_OBJECT_DEEP(mod_consts[i]);		75	CHECK_OBJECT_DEEP(mod_consts[i]);
	76	}		76	}
	77	}		77	}
	78	#endif		78	#endif
	79			79
	80	// The module code objects.		80	// The module code objects.
	81	static PyCodeObject *codeobj_fbda7d4859dc54d62dbd591de9f74869;		81	static PyCodeObject *codeobj_fbda7d4859dc54d62dbd591de9f74869;
	82	static PyCodeObject *codeobj_1dacf538eab0697bba9a9f3c00a98988;		82	static PyCodeObject *codeobj_1dacf538eab0697bba9a9f3c00a98988;
n	83	static PyCodeObject *codeobj_ca7e960635b32d4a8911e2a222626622;	n
	84	/* For use in "MainProgram.c". */		83	/* For use in "MainProgram.c". */
	85	PyCodeObject *codeobj_main = NULL;		84	PyCodeObject *codeobj_main = NULL;
	86			85
	87	static void createModuleCodeObjects(void) {		86	static void createModuleCodeObjects(void) {
n	88	module_filename_obj = mod_consts[2]; CHECK_OBJECT(module_filename_obj);	n	87	module_filename_obj = mod_consts[1]; CHECK_OBJECT(module_filename_obj);
	89	codeobj_fbda7d4859dc54d62dbd591de9f74869 = MAKE_CODE_OBJECT(module_filename_obj, 1, CO_NOFREE, mod_consts[10], mod_consts[10], NULL, NULL, 0, 0, 0);		88	codeobj_fbda7d4859dc54d62dbd591de9f74869 = MAKE_CODE_OBJECT(module_filename_obj, 1, CO_NOFREE, mod_consts[10], mod_consts[10], NULL, NULL, 0, 0, 0);
	90	codeobj_main = codeobj_fbda7d4859dc54d62dbd591de9f74869;		89	codeobj_main = codeobj_fbda7d4859dc54d62dbd591de9f74869;
	91	codeobj_1dacf538eab0697bba9a9f3c00a98988 = MAKE_CODE_OBJECT(module_filename_obj, 7, CO_OPTIMIZED \| CO_NEWLOCALS \| CO_NOFREE, mod_consts[5], mod_consts[5], mod_consts[11], NULL, 0, 0, 0);		90	codeobj_1dacf538eab0697bba9a9f3c00a98988 = MAKE_CODE_OBJECT(module_filename_obj, 7, CO_OPTIMIZED \| CO_NEWLOCALS \| CO_NOFREE, mod_consts[5], mod_consts[5], mod_consts[11], NULL, 0, 0, 0);
n	92	codeobj_ca7e960635b32d4a8911e2a222626622 = MAKE_CODE_OBJECT(module_filename_obj, 10, CO_NOFREE, mod_consts[0], mod_consts[12], NULL, NULL, 0, 0, 0);	n
	93	}		91	}
	94			92
	95	// The module function declarations.		93	// The module function declarations.
	96	static PyObject *MAKE_FUNCTION___main__$$$function__1_calledRepeatedly();		94	static PyObject *MAKE_FUNCTION___main__$$$function__1_calledRepeatedly();
	97			95
	98			96
n	99	static PyObject *MAKE_FUNCTION___main__$$$function__1_calledRepeatedly$$$function__1_empty();	n
	100
	101
	102	// The module function definitions.		97	// The module function definitions.
n	103	static PyObject impl___main__$$$function__1_calledRepeatedly(PyThreadState tstate, struct Nuitka_FunctionObject const self, PyObject *python_pars) {	n
	104	// Preserve error status for checks
	105	#ifndef __NUITKA_NO_ASSERT__
	106	NUITKA_MAY_BE_UNUSED bool had_error = HAS_ERROR_OCCURRED(tstate);
	107	#endif
	108
	109	// Local variable declarations.
	110	PyObject *var_empty = NULL;
	111	PyObject *tmp_return_value = NULL;
	112
	113	// Actual function body.
	114	{
	115	PyObject *tmp_assign_source_1;
	116
	117
	118	tmp_assign_source_1 = MAKE_FUNCTION___main__$$$function__1_calledRepeatedly$$$function__1_empty();
	119
	120	assert(var_empty == NULL);
	121	var_empty = tmp_assign_source_1;
	122	}
	123	// Tried code:
	124	CHECK_OBJECT(var_empty);
	125	tmp_return_value = var_empty;
	126	Py_INCREF(tmp_return_value);
	127	goto try_return_handler_1;
	128	NUITKA_CANNOT_GET_HERE("tried codes exits in all cases");
	129	return NULL;
	130	// Return handler code:
	131	try_return_handler_1:;
	132	CHECK_OBJECT(var_empty);
	133	Py_DECREF(var_empty);
	134	var_empty = NULL;
	135	goto function_return_exit;
	136	// End of try:
	137
	138	NUITKA_CANNOT_GET_HERE("Return statement must have exited already.");
	139	return NULL;
	140
	141
	142	function_return_exit:
	143	// Function cleanup code if any.
	144
	145
	146	// Actual function exit with return value, making sure we did not make
	147	// the error status worse despite non-NULL return.
	148	CHECK_OBJECT(tmp_return_value);
	149	assert(had_error \|\| !HAS_ERROR_OCCURRED(tstate));
	150	return tmp_return_value;
	151	}
	152
	153
	154			98
	155	static PyObject *MAKE_FUNCTION___main__$$$function__1_calledRepeatedly() {		99	static PyObject *MAKE_FUNCTION___main__$$$function__1_calledRepeatedly() {
	156	struct Nuitka_FunctionObject *result = Nuitka_Function_New(		100	struct Nuitka_FunctionObject *result = Nuitka_Function_New(
n	157	impl___main__$$$function__1_calledRepeatedly,	n	101	NULL,
	158	mod_consts[5],		102	mod_consts[5],
	159	#if PYTHON_VERSION >= 0x300		103	#if PYTHON_VERSION >= 0x300
	160	NULL,		104	NULL,
	161	#endif		105	#endif
	162	codeobj_1dacf538eab0697bba9a9f3c00a98988,		106	codeobj_1dacf538eab0697bba9a9f3c00a98988,
	168	module___main__,		112	module___main__,
	169	NULL,		113	NULL,
	170	NULL,		114	NULL,
	171	0		115	0
	172	);		116	);
n	173		n	117	Nuitka_Function_EnableConstReturnGeneric(result, mod_consts[4]);
	174
	175	return (PyObject *)result;
	176	}
	177
	178
	179
	180	static PyObject *MAKE_FUNCTION___main__$$$function__1_calledRepeatedly$$$function__1_empty() {
	181	struct Nuitka_FunctionObject *result = Nuitka_Function_New(
	182	NULL,
	183	mod_consts[0],
	184	#if PYTHON_VERSION >= 0x300
	185	NULL,
	186	#endif
	187	codeobj_ca7e960635b32d4a8911e2a222626622,
	188	NULL,
	189	#if PYTHON_VERSION >= 0x300
	190	NULL,
	191	NULL,
	192	#endif
	193	module___main__,
	194	NULL,
	195	NULL,
	196	0
	197	);
	198
	199			118
	200	return (PyObject *)result;		119	return (PyObject *)result;
	201	}		120	}
	202			121
	203			122
	213	// Provide a way to create find a function via its C code and create it back		132	// Provide a way to create find a function via its C code and create it back
	214	// in another process, useful for multiprocessing extensions like dill		133	// in another process, useful for multiprocessing extensions like dill
	215	extern void registerDillPluginTables(PyThreadState tstate, char const module_name, PyMethodDef reduce_compiled_function, PyMethodDef create_compiled_function);		134	extern void registerDillPluginTables(PyThreadState tstate, char const module_name, PyMethodDef reduce_compiled_function, PyMethodDef create_compiled_function);
	216			135
	217	static function_impl_code const function_table___main__[] = {		136	static function_impl_code const function_table___main__[] = {
n	218	impl___main__$$$function__1_calledRepeatedly,	n	137
	219	NULL		138	NULL
	220	};		139	};
	221			140
	222	static PyObject _reduce_compiled_function(PyObject self, PyObject args, PyObject kwds) {		141	static PyObject _reduce_compiled_function(PyObject self, PyObject args, PyObject kwds) {
	223	PyObject *func;		142	PyObject *func;
	570			489
	571	// Module code.		490	// Module code.
	572	{		491	{
	573	PyObject *tmp_assign_source_1;		492	PyObject *tmp_assign_source_1;
	574	tmp_assign_source_1 = Py_None;		493	tmp_assign_source_1 = Py_None;
n	575	UPDATE_STRING_DICT0(moduledict___main__, (Nuitka_StringObject *)mod_consts[1], tmp_assign_source_1);	n	494	UPDATE_STRING_DICT0(moduledict___main__, (Nuitka_StringObject *)mod_consts[0], tmp_assign_source_1);
	576	}		495	}
	577	{		496	{
	578	PyObject *tmp_assign_source_2;		497	PyObject *tmp_assign_source_2;
n	579	tmp_assign_source_2 = mod_consts[2];	n	498	tmp_assign_source_2 = mod_consts[1];
	580	UPDATE_STRING_DICT0(moduledict___main__, (Nuitka_StringObject *)mod_consts[3], tmp_assign_source_2);		499	UPDATE_STRING_DICT0(moduledict___main__, (Nuitka_StringObject *)mod_consts[2], tmp_assign_source_2);
	581	}		500	}
	582	frame_fbda7d4859dc54d62dbd591de9f74869 = MAKE_MODULE_FRAME(codeobj_fbda7d4859dc54d62dbd591de9f74869, module___main__);		501	frame_fbda7d4859dc54d62dbd591de9f74869 = MAKE_MODULE_FRAME(codeobj_fbda7d4859dc54d62dbd591de9f74869, module___main__);
	583			502
	584	// Push the new frame as the currently active one, and we should be exclusively		503	// Push the new frame as the currently active one, and we should be exclusively
	585	// owning it.		504	// owning it.
	591	PyObject *tmp_assign_source_3;		510	PyObject *tmp_assign_source_3;
	592	PyObject *tmp_name_value_1;		511	PyObject *tmp_name_value_1;
	593	PyObject *tmp_globals_arg_value_1;		512	PyObject *tmp_globals_arg_value_1;
	594	PyObject *tmp_locals_arg_value_1;		513	PyObject *tmp_locals_arg_value_1;
	595	PyObject *tmp_fromlist_value_1;		514	PyObject *tmp_fromlist_value_1;
n	596	tmp_name_value_1 = mod_consts[4];	n	515	tmp_name_value_1 = mod_consts[3];
	597	tmp_globals_arg_value_1 = (PyObject *)moduledict___main__;		516	tmp_globals_arg_value_1 = (PyObject *)moduledict___main__;
	598	tmp_locals_arg_value_1 = Py_None;		517	tmp_locals_arg_value_1 = Py_None;
	599	tmp_fromlist_value_1 = Py_None;		518	tmp_fromlist_value_1 = Py_None;
	600	frame_fbda7d4859dc54d62dbd591de9f74869->m_frame.f_lineno = 4;		519	frame_fbda7d4859dc54d62dbd591de9f74869->m_frame.f_lineno = 4;
	601	tmp_assign_source_3 = IMPORT_MODULE4(tstate, tmp_name_value_1, tmp_globals_arg_value_1, tmp_locals_arg_value_1, tmp_fromlist_value_1);		520	tmp_assign_source_3 = IMPORT_MODULE4(tstate, tmp_name_value_1, tmp_globals_arg_value_1, tmp_locals_arg_value_1, tmp_fromlist_value_1);
	607			526
	608	exception_lineno = 4;		527	exception_lineno = 4;
	609			528
	610	goto frame_exception_exit_1;		529	goto frame_exception_exit_1;
	611	}		530	}
n	612	UPDATE_STRING_DICT1(moduledict___main__, (Nuitka_StringObject *)mod_consts[4], tmp_assign_source_3);	n	531	UPDATE_STRING_DICT1(moduledict___main__, (Nuitka_StringObject *)mod_consts[3], tmp_assign_source_3);
	613	}		532	}
	614	{		533	{
	615	PyObject *tmp_assign_source_4;		534	PyObject *tmp_assign_source_4;
	616			535
	617			536
	621	}		540	}
	622	{		541	{
	623	PyObject *tmp_assign_source_5;		542	PyObject *tmp_assign_source_5;
	624	PyObject *tmp_iter_arg_1;		543	PyObject *tmp_iter_arg_1;
	625	PyObject *tmp_called_instance_1;		544	PyObject *tmp_called_instance_1;
n	626	tmp_called_instance_1 = GET_STRING_DICT_VALUE(moduledict___main__, (Nuitka_StringObject *)mod_consts[4]);	n	545	tmp_called_instance_1 = GET_STRING_DICT_VALUE(moduledict___main__, (Nuitka_StringObject *)mod_consts[3]);
	627			546
	628	if (unlikely(tmp_called_instance_1 == NULL)) {		547	if (unlikely(tmp_called_instance_1 == NULL)) {
t	629	tmp_called_instance_1 = GET_MODULE_VARIABLE_VALUE_FALLBACK(tstate, mod_consts[4]);	t	548	tmp_called_instance_1 = GET_MODULE_VARIABLE_VALUE_FALLBACK(tstate, mod_consts[3]);
	630	}		549	}
	631			550
	632	assert(!(tmp_called_instance_1 == NULL));		551	assert(!(tmp_called_instance_1 == NULL));
	633	frame_fbda7d4859dc54d62dbd591de9f74869->m_frame.f_lineno = 20;		552	frame_fbda7d4859dc54d62dbd591de9f74869->m_frame.f_lineno = 20;
	634	tmp_iter_arg_1 = CALL_METHOD_WITH_ARGS2(		553	tmp_iter_arg_1 = CALL_METHOD_WITH_ARGS2(