Richard Saunders added the comment:
Some more information:
Bob Arendt and I have been playing with the Fedora Core .spec file
for python on Fedora Core 15:
the compile options we found seem to automatically (as we did non invoke
this option) invoke '-fno-builtin-memcmp' so
Richard Saunders added the comment:
Added branches for specializing for UCS2 and UCS4 types
--
Added file:
http://bugs.python.org/file23574/unicode_with_memcmp_and_ucs_specialization.patch
___
Python tracker
<http://bugs.python.org/issue13
Richard Saunders added the comment:
Here's a test demonstrating the memcmp optimization effect:
---
more ~/PickTest5/Python/string_test3.py
a = []
b = []
c = []
d = []
for x in range(0,1000) :
a.append("the quick brown
Richard Saunders added the comment:
This is a potential patch:
I believe it follows the C-style of PEP 7
There is a test as well, testing 1 and 2 byte kinds.
I have run it through the python tests and have added no new breakages
(there were some tests that failed, but they failed with and
New submission from Richard Saunders :
In discussions of memcmp performance, (http://www.picklingtools.com/study.pdf)
it was noted how well Python 2.7 can take advantage of faster memcmps (indeed,
the rich comparisons are all memcmp calls).
There have been some discussion on python
