On Mon, Aug 4, 2008 at 9:16 AM, Trygve Inda <[EMAIL PROTECTED]> wrote:
>> IMHO, this is just premature optimisation. >> >> That said, there is no cost to access an ivar using the 32 bits >> runtime, and I don't think the cost on 64 bits runtime is important >> enough to bother with it. >> > > This is what I was trying to determine. Thanks. It's not strictly true- the compiler can do more on a local variable than it can on an ivar. That said, this is *definitely* premature optimization; the difference won't be noticed except for extremely tight loops, and it's simple enough to make local copies of an ivar *after* Shark has shown that it's a problem. I have gotten performance wins from that in a few isolated cases, however. -- - David T. Wilson [EMAIL PROTECTED] _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
