On 14/03/2024 11:02 am, Florian Weimer wrote: > * Andrew Cooper via Gcc: > >> Anyway - is there a way of doing this that I've managed to overlook? > Use __builtin_ffs? > > I think there's some concern for GCC that some of the alternative x86-64 > implementations do not follow the AMD and Intel behavior.
This is why I'm not asking "please improve the code gen of __builtin_ffs()". Its a can of worms I don't expect anyone wants to open. But in the case that I can do better owing to a narrower scope, I'd like to do so. ~Andrew
