News for hackers. Stuff that matters.

A comment on eieio. Parent comment

Re:eieio by duskwuff on Friday May 29, 2009 @01:43AM (#631603)
Sadly, there is no population-count instruction on PowerPC. The closest thing you get is cntlzw (Count Leading Zeroes Word).
[ Parent | on HN ]
Re:eieio by asciilifeform on Friday May 29, 2009 @09:38AM (#632007)
> Sadly, there is no population-count instruction on PowerPC

Here is one man's theory as to why:

http://www.moyogo.com/blog/2005/09/secret-opcodes.html

[ Parent | on HN ]