[issue26200] SETREF adds unnecessary work in some cases

[Roundup Robot]

Roundup Robot added the comment:

New changeset 9cf8572abe58 by Serhiy Storchaka in branch '2.7':
Issue #26200: Added Py_SETREF and replaced Py_XSETREF with Py_SETREF
https://hg.python.org/cpython/rev/9cf8572abe58

New changeset 66fafa13a711 by Serhiy Storchaka in branch '3.5':
Issue #26200: Added Py_SETREF and replaced Py_XSETREF with Py_SETREF
https://hg.python.org/cpython/rev/66fafa13a711

New changeset d758c5965199 by Serhiy Storchaka in branch 'default':
Issue #26200: Added Py_SETREF and replaced Py_XSETREF with Py_SETREF
https://hg.python.org/cpython/rev/d758c5965199

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<http://bugs.python.org/issue26200>
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