Talk About Network

Google


Register and Login
Nick
Password
Register create new account Sign up is FREE and you can post replies, new topics, bookmark posts and more!
Recover lost password


Programming > Assembly x86 > Re: Population ...
Latest [ Topics | Posts ] Archive Post A New Topic Post a Reply
<< Topic < Post Post 3 of 33 Topic 4614 of 4729
 Post > Topic >>

Re: Population count in SSE2, again

by Terje Mathisen <spamtrap@[EMAIL PROTECTED] > Apr 13, 2008 at 03:08 PM

James Van Buskirk wrote:
> But the big difference lies in implementation of the Carry-Save
> Adder (CSA) compression scheme.  You will recall that the
> fundamental sequence of operations, starting with inputs A, B,
> and C is:

[snipped bitslice adder logic using negated input bits]

Nice!!

OTOH, POPCNT is turning up as a regular x86 opcode these days, and I do 
assume this will be _very_ hard to beat?

Terje
-- 
- <Terje.Mathisen@[EMAIL PROTECTED]
>
"almost all programming can be viewed as an exercise in caching"




 33 Posts in Topic:
Population count in SSE2, again
 "James Van Buskirk&q  2008-04-12 03:14:45 
Re: Population count in SSE2, again
 Terence <spamtrap@[EM  2008-04-12 16:55:40 
Re: Population count in SSE2, again
 Terje Mathisen <spamt  2008-04-13 15:08:36 
Re: Population count in SSE2, again
 "James Van Buskirk&q  2008-04-13 09:20:49 
Re: Population count in SSE2, again
 "Maarten Kronenburg&  2008-04-13 21:48:40 
Re: Population count in SSE2, again
 Jake Waskett <spamtra  2008-04-13 21:43:32 
Re: Population count in SSE2, again
 "Maarten Kronenburg&  2008-04-14 01:55:14 
Re: Population count in SSE2, again
 Jake Waskett <spamtra  2008-04-14 11:19:35 
Re: Population count in SSE2, again
 "James Van Buskirk&q  2008-04-14 02:38:07 
Re: Population count in SSE2, again
 "Maarten Kronenburg&  2008-04-14 20:53:32 
Re: Population count in SSE2, again
 "Maarten Kronenburg&  2008-04-15 17:13:38 
Re: Population count in SSE2, again
 "Maarten Kronenburg&  2008-04-15 21:58:21 
Re: Population count in SSE2, again
 Terence <spamtrap@[EM  2008-04-13 17:14:55 
Re: Population count in SSE2, again
 "Wolfgang Kern"  2008-04-14 12:42:35 
Re: Population count in SSE2, again
 "James Van Buskirk&q  2008-04-14 13:53:21 
Re: Population count in SSE2, again
 "Wolfgang Kern"  2008-04-16 15:34:09 
Re: Population count in SSE2, again
 "James Van Buskirk&q  2008-04-16 10:05:48 
Re: Population count in SSE2, again
 Robert Redelmeier <red  2008-04-14 14:21:05 
Re: Population count in SSE2, again
 "James Van Buskirk&q  2008-04-14 02:58:34 
Re: Population count in SSE2, again
 "Maarten Kronenburg&  2008-04-14 18:09:21 
Re: Population count in SSE2, again
 Terje Mathisen <spamt  2008-04-15 07:28:26 
Re: Population count in SSE2, again
 Terence <spamtrap@[EM  2008-04-14 05:00:42 
Re: Population count in SSE2, again
 Terence <spamtrap@[EM  2008-04-14 15:09:35 
Re: Population count in SSE2, again
 Terence <spamtrap@[EM  2008-04-15 02:29:34 
Re: Population count in SSE2, again
 Gerd Isenberg <spamtr  2008-04-15 02:56:39 
Re: Population count in SSE2, again
 "James Van Buskirk&q  2008-04-16 00:33:16 
Re: Population count in SSE2, again
 "Maarten Kronenburg&  2008-04-16 14:42:37 
Re: Population count in SSE2, again
 "Maarten Kronenburg&  2008-04-16 19:38:21 
Re: Population count in SSE2, again
 "James Van Buskirk&q  2008-04-16 12:41:36 
Re: Population count in SSE2, again
 "Maarten Kronenburg&  2008-04-16 21:39:47 
Re: Population count in SSE2, again
 "Maarten Kronenburg&  2008-04-17 16:43:31 
Re: Population count in SSE2, again
 Gerd Isenberg <spamtr  2008-04-16 09:58:11 
Re: Population count in SSE2, again
 "James Van Buskirk&q  2008-04-16 12:59:38 

Post A Reply:
  Go here to Signup

AddThis Feed Button


About - Advertising - Contact - Frequently Asked Questions - Privacy Policy - Terms of Use - Signup
Contact
tan12V112 Fri Jul 25 15:20:15 CDT 2008.