Construct BuiltinSumWithList

Kay Hayen

2013-08-15 08:15

Performance Diagrams

Source Code with Construct

empty = ()

value = list(range(10))

def calledRepeatedly(iterable, empty):
    # Force frame
    value

    # We measure making a list iterator step or not.

# construct_begin
    y = sum(iterable)
# construct_alternative



    return x, y

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

print("OK.")

Source Code without Construct

empty = ()

value = list(range(10))

def calledRepeatedly(iterable, empty):
    # Force frame
    value

    # We measure making a list iterator step or not.

# construct_begin

# construct_alternative
    y = sum(empty)
# construct_end

    return x, y

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

print("OK.")

Context Diff of Source Code

	Construct			Baseline
	27	value		27	value
	28			28
	29	# We measure making a list iterator step or not.		29	# We measure making a list iterator step or not.
	30			30
	31	# construct_begin		31	# construct_begin
n	32	y = sum(iterable)	n	32
	33	# construct_alternative		33	# construct_alternative
t	34		t	34	y = sum(empty)
	35			35	# construct_end
	36			36
	37	return x, y		37	return x, y
	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
	167	}		167	}
	168	}		168	}
	169	{		169	{
	170	PyObject *tmp_assign_source_1;		170	PyObject *tmp_assign_source_1;
	171	PyObject *tmp_sum_sequence_1;		171	PyObject *tmp_sum_sequence_1;
n	172	CHECK_OBJECT(par_iterable);	n	172	CHECK_OBJECT(par_empty);
	173	tmp_sum_sequence_1 = par_iterable;		173	tmp_sum_sequence_1 = par_empty;
	174	tmp_assign_source_1 = BUILTIN_SUM1(tmp_sum_sequence_1);		174	tmp_assign_source_1 = BUILTIN_SUM1(tmp_sum_sequence_1);
	175	if (tmp_assign_source_1 == NULL) {		175	if (tmp_assign_source_1 == NULL) {
	176	assert(ERROR_OCCURRED());		176	assert(ERROR_OCCURRED());
	177			177
	178	FETCH_ERROR_OCCURRED(&exception_type, &exception_value, &exception_tb);		178	FETCH_ERROR_OCCURRED(&exception_type, &exception_value, &exception_tb);
	179			179
	180			180
t	181	exception_lineno = 32;	t	181	exception_lineno = 34;
	182	type_description_1 = "ooo";		182	type_description_1 = "ooo";
	183	goto frame_exception_exit_1;		183	goto frame_exception_exit_1;
	184	}		184	}
	185	assert(var_y == NULL);		185	assert(var_y == NULL);
	186	var_y = tmp_assign_source_1;		186	var_y = tmp_assign_source_1;