> Le 16 déc. 2019 à 06:05, Saagar Jha <saa...@saagarjha.com> a écrit : > > It’s been a while, but I just thought you both might be interested in some > follow-up I did for this idea. I implemented it for fun in clang > <https://github.com/saagarjha/expresscall> and it turns out that it’s a > pretty decent performance win > <https://saagarjha.com/blog/2019/12/15/bypassing-objc-msgsend/> over > objc_msgSend, both because it dispatches faster and because the compiler can > do a full inline through it.
Yes, but you don't preserve the objc_msgSend semantic. If I understand you code correctly, all you do is checking if it is the same ISA, which does not guarantee in anyway that the selector did not change since the previous call. As classes are fully dynamic and methods can be swizzle, you must perform a full IMP lookup for every calls, which complexly defeat the purpose of inline caching. _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
