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Hoist constant expression out of an inner loop

This commit is contained in:
Raymond Hettinger 2015-09-19 00:21:33 -06:00
parent 6631b550d6
commit 0e14e6610b
1 changed files with 6 additions and 2 deletions
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8
Modules/_collectionsmodule.c
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@ -371,6 +371,7 @@ static PyObject *
deque_extend(dequeobject *deque, PyObject *iterable)
{
PyObject *it, *item;
int trim = (deque->maxlen != -1);
/* Handle case where id(deque) == id(iterable) */
if ((PyObject *)deque == iterable) {
@ -417,7 +418,8 @@ deque_extend(dequeobject *deque, PyObject *iterable)
Py_SIZE(deque)++;
deque->rightindex++;
deque->rightblock->data[deque->rightindex] = item;
deque_trim_left(deque);
if (trim)
deque_trim_left(deque);
}
if (PyErr_Occurred()) {
Py_DECREF(it);
@ -434,6 +436,7 @@ static PyObject *
deque_extendleft(dequeobject *deque, PyObject *iterable)
{
PyObject *it, *item;
int trim = (deque->maxlen != -1);
/* Handle case where id(deque) == id(iterable) */
if ((PyObject *)deque == iterable) {
@ -480,7 +483,8 @@ deque_extendleft(dequeobject *deque, PyObject *iterable)
Py_SIZE(deque)++;
deque->leftindex--;
deque->leftblock->data[deque->leftindex] = item;
deque_trim_right(deque);
if (trim)
deque_trim_right(deque);
}
if (PyErr_Occurred()) {
Py_DECREF(it);