Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.python > #34296
| Date | 2012-12-05 18:19 +0100 |
|---|---|
| From | Bruno Dupuis <python.ml.bruno.dupuis@lisael.org> |
| Subject | Re: why does dead code costs time? |
| References | <mailman.496.1354722393.29569.python-list@python.org> <ai9a9vFaup4U2@mid.individual.net> <20121205164051.GF10865@hud> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.503.1354727963.29569.python-list@python.org> (permalink) |
On Wed, Dec 05, 2012 at 05:40:51PM +0100, Bruno Dupuis wrote: > On Wed, Dec 05, 2012 at 04:15:59PM +0000, Neil Cerutti wrote: > > Maybe it's the difference between LOAD_CONST and LOAD_GLOBAL. We > > can wonder why g uses the latter. > > Good point! I didn't even noticed that. It's weird... Maybe the > difference comes from a peehole optim on f which is not possible on g as > g is to complex. > Neil, you were right, thanks. I patched peehole.c to remove this optim, and now the figures are the same. I investigate to find out why the latter function is not optimized the same way (and if it can be, I'll propose a patch for that) -- Bruno Dupuis
Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
why does dead code costs time? Bruno Dupuis <python.ml.bruno.dupuis@lisael.org> - 2012-12-05 16:46 +0100
Re: why does dead code costs time? Neil Cerutti <neilc@norwich.edu> - 2012-12-05 16:15 +0000
Re: why does dead code costs time? Bruno Dupuis <python.ml.bruno.dupuis@lisael.org> - 2012-12-05 17:40 +0100
Re: why does dead code costs time? Ramchandra Apte <maniandram01@gmail.com> - 2012-12-09 06:11 -0800
Re: why does dead code costs time? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-12-09 16:47 +0000
Re: why does dead code costs time? Ramchandra Apte <maniandram01@gmail.com> - 2012-12-12 21:23 -0800
Re: why does dead code costs time? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-12-13 06:01 +0000
Re: why does dead code costs time? rusi <rustompmody@gmail.com> - 2012-12-12 22:27 -0800
Re: why does dead code costs time? Cameron Simpson <cs@zip.com.au> - 2012-12-13 17:51 +1100
Re: why does dead code costs time? rusi <rustompmody@gmail.com> - 2012-12-12 22:59 -0800
Re: why does dead code costs time? Chris Angelico <rosuav@gmail.com> - 2012-12-13 18:03 +1100
Re: why does dead code costs time? Ramchandra Apte <maniandram01@gmail.com> - 2012-12-12 21:23 -0800
Re: why does dead code costs time? Bruno Dupuis <python.ml.bruno.dupuis@lisael.org> - 2012-12-05 18:19 +0100
Re: why does dead code costs time? Tim Roberts <timr@probo.com> - 2012-12-05 21:20 -0800
Re: why does dead code costs time? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-12-05 17:34 +0000
Re: why does dead code costs time? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-12-05 17:39 +0000
Re: why does dead code costs time? Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-05 10:59 -0700
Re: why does dead code costs time? Bruno Dupuis <python.ml.bruno.dupuis@lisael.org> - 2012-12-05 19:24 +0100
Re: why does dead code costs time? Terry Reedy <tjreedy@udel.edu> - 2012-12-05 15:41 -0500
Re: why does dead code costs time? Chris Kaynor <ckaynor@zindagigames.com> - 2012-12-05 12:49 -0800
Re: why does dead code costs time? Bruno Dupuis <python.ml.bruno.dupuis@lisael.org> - 2012-12-05 21:50 +0100
Re: why does dead code costs time? Bruno Dupuis <python.ml.bruno.dupuis@lisael.org> - 2012-12-05 22:58 +0100
csiph-web