Construct LocalVariableAccess

Performance Diagrams

Source Code with Construct

module_value1 = 1000
module_value2 = None
module_value3 = None

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

    local_value = module_value1

    # Use writing to global variable as access method.
    global module_value2, module_value3

# construct_begin
    module_value2 = local_value
# construct_end

    module_value3 = local_value

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

print("OK.")

Source Code without Construct

module_value1 = 1000
module_value2 = None
module_value3 = None

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

    local_value = module_value1

    # Use writing to global variable as access method.
    global module_value2, module_value3

# construct_begin



    module_value3 = local_value

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

print("OK.")

Context Diff of Source Code

	Construct			Baseline
	29			29
	30	# Use writing to global variable as access method.		30	# Use writing to global variable as access method.
	31	global module_value2, module_value3		31	global module_value2, module_value3
	32			32
	33	# construct_begin		33	# construct_begin
t	34	module_value2 = local_value	t	34
	35	# construct_end		35
	36			36
	37	module_value3 = local_value		37	module_value3 = local_value
	38			38
	39	import itertools		39	import itertools
	40	for x in itertools.repeat(None, 50000):		40	for x in itertools.repeat(None, 50000):

Context Diff of Generated Code

	Construct			Baseline
	248	frame_no_exception_1:;		248	frame_no_exception_1:;
	249	{		249	{
	250	PyObject *tmp_assign_source_2;		250	PyObject *tmp_assign_source_2;
	251	CHECK_OBJECT(var_local_value);		251	CHECK_OBJECT(var_local_value);
	252	tmp_assign_source_2 = var_local_value;		252	tmp_assign_source_2 = var_local_value;
t	253	UPDATE_STRING_DICT0(moduledict___main__, (Nuitka_StringObject *)const_str_plain_module_value2, tmp_assign_source_2);	t	253	UPDATE_STRING_DICT0(moduledict___main__, (Nuitka_StringObject *)const_str_plain_module_value3, tmp_assign_source_2);
	254	}
	255	{
	256	PyObject *tmp_assign_source_3;
	257	CHECK_OBJECT(var_local_value);
	258	tmp_assign_source_3 = var_local_value;
	259	UPDATE_STRING_DICT0(moduledict___main__, (Nuitka_StringObject *)const_str_plain_module_value3, tmp_assign_source_3);
	260	}		254	}
	261	tmp_return_value = Py_None;		255	tmp_return_value = Py_None;
	262	Py_INCREF(tmp_return_value);		256	Py_INCREF(tmp_return_value);
	263	goto try_return_handler_1;		257	goto try_return_handler_1;
	264	// tried codes exits in all cases		258	// tried codes exits in all cases