Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.python > #90702
| From | Gregory Ewing <greg.ewing@canterbury.ac.nz> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: Building CPython |
| Date | 2015-05-16 12:55 +1200 |
| Message-ID | <crnisnF2efoU1@mid.individual.net> (permalink) |
| References | (3 earlier) <874mnfunpn.fsf@elektro.pacujo.net> <zR85x.441429$Zf4.246168@fx22.am4> <xpb5x.597872$X95.548374@fx10.am4> <crlglfFgf05U1@mid.individual.net> <Z2j5x.640864$ms.43141@fx30.am4> |
BartC wrote: > For example, there is a /specific/ byte-code called BINARY_ADD, which > then proceeds to call a /generic/ binary-op handler! This throws away > the advantage of knowing at byte-code generation time exactly which > operation is needed. While inlining the binary-op handling might give you a slightly shorter code path, it wouldn't necessarily speed anything up. It's possible, for example, that the shared binary-op handler fits in the instruction cache, but the various inlined copies of it don't, leading to a slowdown. The only way to be sure about things like that is to try them and measure. The days when you could predict the speed of a program just by counting the number of instructions executed are long gone. -- Greg
Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Building CPython BartC <bc@freeuk.com> - 2015-05-13 20:36 +0100
Re: Building CPython Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-05-13 20:58 +0100
Re: Building CPython Terry Reedy <tjreedy@udel.edu> - 2015-05-13 18:34 -0400
Re: Building CPython BartC <bc@freeuk.com> - 2015-05-14 16:51 +0100
Re: Building CPython Chris Angelico <rosuav@gmail.com> - 2015-05-15 02:09 +1000
Re: Building CPython BartC <bc@freeuk.com> - 2015-05-14 18:02 +0100
Re: Building CPython Dave Angel <davea@davea.name> - 2015-05-14 13:10 -0400
Re: Building CPython Chris Angelico <rosuav@gmail.com> - 2015-05-15 03:11 +1000
Re: Building CPython BartC <bc@freeuk.com> - 2015-05-14 18:32 +0100
Re: Building CPython Chris Angelico <rosuav@gmail.com> - 2015-05-15 03:45 +1000
Re: Building CPython Terry Reedy <tjreedy@udel.edu> - 2015-05-14 14:50 -0400
Re: Building CPython Christian Gollwitzer <auriocus@gmx.de> - 2015-05-15 12:51 +0200
Re: Building CPython Terry Reedy <tjreedy@udel.edu> - 2015-05-15 17:19 -0400
Re: Building CPython Marko Rauhamaa <marko@pacujo.net> - 2015-05-14 19:29 +0300
Re: Building CPython BartC <bc@freeuk.com> - 2015-05-14 22:55 +0100
Re: Building CPython MRAB <python@mrabarnett.plus.com> - 2015-05-14 23:19 +0100
Re: Building CPython BartC <bc@freeuk.com> - 2015-05-15 01:50 +0100
Re: Building CPython Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-05-15 18:05 +1200
Re: Building CPython Marko Rauhamaa <marko@pacujo.net> - 2015-05-15 11:59 +0300
Re: Building CPython wxjmfauth@gmail.com - 2015-05-15 02:07 -0700
Re: Building CPython Marko Rauhamaa <marko@pacujo.net> - 2015-05-15 12:20 +0300
Re: Building CPython wxjmfauth@gmail.com - 2015-05-15 02:51 -0700
Re: Building CPython Marko Rauhamaa <marko@pacujo.net> - 2015-05-15 13:52 +0300
Re: Building CPython Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-05-15 22:10 +1000
Re: Building CPython Chris Angelico <rosuav@gmail.com> - 2015-05-15 22:34 +1000
Re: Building CPython wxjmfauth@gmail.com - 2015-05-15 07:11 -0700
Re: Building CPython Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-05-15 13:41 +0100
Re: Building CPython Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-05-15 13:38 +0100
Re: Building CPython Chris Angelico <rosuav@gmail.com> - 2015-05-15 19:43 +1000
Re: Building CPython Marko Rauhamaa <marko@pacujo.net> - 2015-05-15 13:50 +0300
Re: Building CPython Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-05-15 22:43 +1000
Re: Building CPython Ian Kelly <ian.g.kelly@gmail.com> - 2015-05-15 09:00 -0600
Re: Building CPython Ian Kelly <ian.g.kelly@gmail.com> - 2015-05-15 09:04 -0600
Re: Building CPython Chris Angelico <rosuav@gmail.com> - 2015-05-16 01:06 +1000
Re: Building CPython Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-05-15 20:14 +1000
Re: Building CPython Chris Angelico <rosuav@gmail.com> - 2015-05-15 20:25 +1000
Re: Building CPython Terry Reedy <tjreedy@udel.edu> - 2015-05-15 17:05 -0400
Re: Building CPython BartC <bc@freeuk.com> - 2015-05-15 22:54 +0100
Re: Building CPython Marko Rauhamaa <marko@pacujo.net> - 2015-05-16 01:44 +0300
Re: Building CPython Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-05-16 00:27 +0100
Re: Building CPython Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-05-16 11:55 +1000
Re: Building CPython Chris Angelico <rosuav@gmail.com> - 2015-05-16 12:15 +1000
Re: Building CPython Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-05-16 03:17 +0100
Re: Building CPython BartC <bc@freeuk.com> - 2015-05-16 01:43 +0100
Re: Building CPython MRAB <python@mrabarnett.plus.com> - 2015-05-16 02:16 +0100
Re: Building CPython Marko Rauhamaa <marko@pacujo.net> - 2015-05-16 11:08 +0300
Re: Building CPython Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-05-16 19:40 +1000
Re: Building CPython Marko Rauhamaa <marko@pacujo.net> - 2015-05-16 16:59 +0300
Re: Building CPython Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-05-17 04:18 +1000
Re: Building CPython Marko Rauhamaa <marko@pacujo.net> - 2015-05-16 21:55 +0300
Re: Building CPython Marko Rauhamaa <marko@pacujo.net> - 2015-05-17 01:51 +0300
Re: Building CPython Marko Rauhamaa <marko@pacujo.net> - 2015-05-17 23:49 +0300
Re: Building CPython Terry Reedy <tjreedy@udel.edu> - 2015-05-15 19:54 -0400
Re: Building CPython BartC <bc@freeuk.com> - 2015-05-15 10:32 +0100
Re: Building CPython Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-05-16 12:55 +1200
Re: Building CPython Jonas Wielicki <jonas@wielicki.name> - 2015-05-17 14:25 +0200
Re: Building CPython BartC <bc@freeuk.com> - 2015-05-17 14:41 +0100
csiph-web