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Minor tweek. Counting down rather than up reduces register pressure.

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This commit is contained in:
Raymond Hettinger 2015-12-15 00:42:30 -08:00
parent f4f67e52b4
commit e4495877dd
1 changed files with 1 additions and 1 deletions
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2
Objects/setobject.c
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@ -678,7 +678,7 @@ set_merge(PySetObject *so, PyObject *otherset)
size_t newmask = (size_t)so->mask;
so->fill = other->used;
so->used = other->used;
for (i = 0; i <= other->mask; i++, other_entry++) {
for (i = other->mask + 1; i > 0 ; i--, other_entry++) {
key = other_entry->key;
if (key != NULL && key != dummy) {
Py_INCREF(key);