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
	257	frame_no_exception_1:;		257	frame_no_exception_1:;
	258	{		258	{
	259	PyObject *tmp_assign_source_2;		259	PyObject *tmp_assign_source_2;
	260	CHECK_OBJECT( var_local_value );		260	CHECK_OBJECT( var_local_value );
	261	tmp_assign_source_2 = var_local_value;		261	tmp_assign_source_2 = var_local_value;
t	262	UPDATE_STRING_DICT0( moduledict___main__, (Nuitka_StringObject *)const_str_plain_module_value2, tmp_assign_source_2 );	t	262	UPDATE_STRING_DICT0( moduledict___main__, (Nuitka_StringObject *)const_str_plain_module_value3, tmp_assign_source_2 );
	263	}
	264	{
	265	PyObject *tmp_assign_source_3;
	266	CHECK_OBJECT( var_local_value );
	267	tmp_assign_source_3 = var_local_value;
	268	UPDATE_STRING_DICT0( moduledict___main__, (Nuitka_StringObject *)const_str_plain_module_value3, tmp_assign_source_3 );
	269	}		263	}
	270	tmp_return_value = Py_None;		264	tmp_return_value = Py_None;
	271	Py_INCREF( tmp_return_value );		265	Py_INCREF( tmp_return_value );
	272	goto try_return_handler_1;		266	goto try_return_handler_1;
	273	// tried codes exits in all cases		267	// tried codes exits in all cases