RE: memory alignment vs passing by value

> I measured the time of computing 100 million bilinear interpolation using
> dot products, and changing the dprod operation to accept a const reference
> instead of the const value makes the test run an order of magnitude
slower!!

Is this Evil Aliasing, Part II ? You could find out by disassembling
both versions and comparing. If it's re-loading through the reference
pointer all the time, then it's probably aliasing related. References
are really pointers, so they can introduce (false) aliasing hazards.

Cheers,

			/ h+



-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now. 
http://productguide.itmanagersjournal.com/
_______________________________________________
Gamedevlists-windows mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
Archives:
http://sourceforge.net/mailarchive/forum.php?forum_id=555