tree 7cc0b6c758e9b9f631ba23bd7c7b36431dd42c80
parent c35491ee3a0f3999791de83e65ef94994058ac5e
author Guido van Rossum <guido@python.org> 1028859274 +0000
committer Guido van Rossum <guido@python.org> 1028859274 +0000
HG:extra convert_revision:svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/python/branches/legacy-trunk%4028090

Major speedup for new-style class creation.  Turns out there was some
trampolining going on with the tp_new descriptor, where the inherited
PyType_GenericNew was overwritten with the much slower slot_tp_new
which would end up calling tp_new_wrapper which would eventually call
PyType_GenericNew.  Add a special case for this to update_one_slot().

XXX Hope there isn't a loophole in this.  I'll buy the first person to
point out a bug in the reasoning a beer.

Backport candidate (but I won't do it).