Construct OperationIntegerPower

Kay Hayen

2013-08-15 08:15

Performance Diagrams

Source Code with Construct

module_value1 = -1
module_value2 = 17

def calledRepeatedly():
    # Force frame and eliminate forward propagation (currently).
    module_value1

    local_value = module_value1

    s = module_value1
    t = module_value2
# construct_begin
    t = s ** t
# construct_end

    return s, t, local_value

import itertools
for x in itertools.repeat(None, 50000):
    calledRepeatedly()

print("OK.")

Source Code without Construct

module_value1 = -1
module_value2 = 17

def calledRepeatedly():
    # Force frame and eliminate forward propagation (currently).
    module_value1

    local_value = module_value1

    s = module_value1
    t = module_value2
# construct_begin



    return s, t, local_value

import itertools
for x in itertools.repeat(None, 50000):
    calledRepeatedly()

print("OK.")

Context Diff of Source Code

	Construct			Baseline
	28	local_value = module_value1		28	local_value = module_value1
	29			29
	30	s = module_value1		30	s = module_value1
	31	t = module_value2		31	t = module_value2
	32	# construct_begin		32	# construct_begin
t	33	t = s ** t	t	33
	34	# construct_end		34
	35			35
	36	return s, t, local_value		36	return s, t, local_value
	37			37
	38	import itertools		38	import itertools
	39	for x in itertools.repeat(None, 50000):		39	for x in itertools.repeat(None, 50000):

Context Diff of Generated Code

	Construct			Baseline
	229	goto frame_exception_exit_1;		229	goto frame_exception_exit_1;
	230	}		230	}
	231	assert(var_t == NULL);		231	assert(var_t == NULL);
	232	Py_INCREF(tmp_assign_source_3);		232	Py_INCREF(tmp_assign_source_3);
	233	var_t = tmp_assign_source_3;		233	var_t = tmp_assign_source_3;
n	234	}	n
	235	{
	236	PyObject *tmp_assign_source_4;
	237	PyObject *tmp_left_value_1;
	238	PyObject *tmp_right_value_1;
	239	CHECK_OBJECT(var_s);
	240	tmp_left_value_1 = var_s;
	241	CHECK_OBJECT(var_t);
	242	tmp_right_value_1 = var_t;
	243	tmp_assign_source_4 = BINARY_OPERATION_POW_OBJECT_OBJECT_OBJECT(tmp_left_value_1, tmp_right_value_1);
	244	if (tmp_assign_source_4 == NULL) {
	245	assert(ERROR_OCCURRED());
	246
	247	FETCH_ERROR_OCCURRED(&exception_type, &exception_value, &exception_tb);
	248
	249
	250	exception_lineno = 33;
	251	type_description_1 = "ooo";
	252	goto frame_exception_exit_1;
	253	}
	254	{
	255	PyObject *old = var_t;
	256	assert(old != NULL);
	257	var_t = tmp_assign_source_4;
	258	Py_DECREF(old);
	259	}
	260
	261	}		234	}
	262			235
	263	#if 0		236	#if 0
	264	RESTORE_FRAME_EXCEPTION(frame_3918e20b0aa2149507166a8265f66345);		237	RESTORE_FRAME_EXCEPTION(frame_3918e20b0aa2149507166a8265f66345);
	265	#endif		238	#endif
	352			325
	353	Py_XDECREF(var_local_value);		326	Py_XDECREF(var_local_value);
	354	var_local_value = NULL;		327	var_local_value = NULL;
	355	Py_XDECREF(var_s);		328	Py_XDECREF(var_s);
	356	var_s = NULL;		329	var_s = NULL;
t	357	Py_XDECREF(var_t);	t
	358	var_t = NULL;
	359	// Re-raise.		330	// Re-raise.
	360	exception_type = exception_keeper_type_1;		331	exception_type = exception_keeper_type_1;
	361	exception_value = exception_keeper_value_1;		332	exception_value = exception_keeper_value_1;
	362	exception_tb = exception_keeper_tb_1;		333	exception_tb = exception_keeper_tb_1;
	363	exception_lineno = exception_keeper_lineno_1;		334	exception_lineno = exception_keeper_lineno_1;