Re: While we're at it

2010/4/1 Dean Anderson <[email protected]>:
> Clue: How many bytes fit in a word?  The start of the array is probably
> word-aligned.  A really good compiler might even figure out that it can
> load the word in a register and test all at once.

Sadly, not. As I said in my reply, I can find no evidence of this in
my analysis of machine code. Note that alignment is a tricky problem,
it would have to scroll until the tests were word-aligned. See method
4 in the cited post;

http://www.stdlib.net/~colmmacc/2009/03/01/optimising-strlen/

for such an example implementation (from glibc). This is quite far
beyond the capabilities of static compile optimization, I doubt it
would even be all that useful.

-- 
Colm