Antoine Pitrou <[EMAIL PROTECTED]> added the comment: Armin, your patch gives a speed-up for "for" loops and comprehensions, although a bit less. Also, it doesn't speed up "while" loops and "if" statements at all. For some reasons it also appears to make pystone a bit slower. Here are some micro-benchmarks:
./python -m timeit "for x in xrange(10000): pass" Before: 1000 loops, best of 3: 758 usec per loop After: 1000 loops, best of 3: 483 usec per loop ./python -m timeit "x=100" "while x: x -= 1" Before: 10000 loops, best of 3: 21.8 usec per loop After: 10000 loops, best of 3: 21.6 usec per loop ./python -m timeit -s "l = range(100)" "[x for x in l]" Before: 100000 loops, best of 3: 14.9 usec per loop After: 100000 loops, best of 3: 13.3 usec per loop ./python -m timeit -s "l = range(100)" "[x for x in l if x]" Before: 10000 loops, best of 3: 23.9 usec per loop After: 10000 loops, best of 3: 22.3 usec per loop ./python -m timeit -s "l = range(100)" "[x for x in l if not x]" Before: 100000 loops, best of 3: 15.8 usec per loop After: 100000 loops, best of 3: 13.9 usec per loop ./python Tools/pybench/pybench.py -t IfThenElse Before: 164ms per round After: 166ms per round __________________________________ Tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue2459> __________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
