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Re: [RFC] noipa attribute (was Re: How to avoid constant propagation into functions?)
On Thu, 15 Dec 2016, Florian Weimer wrote:
> * Jakub Jelinek:
> > + if (lookup_attribute ("used", attributes) == NULL)
> > + attributes = tree_cons (get_identifier ("used"), NULL, attributes);
> Attribute “used” seems different to me from the rest. Based on the
> documentation, I wouldn't expect it to have any action-at-a-distance
> effect, just that an out-of-line copy is always emitted. It will
> disable unused-function warnings, too, I think.
Yes, technically cloning on "known" callgraph paths is still possible
with 'used' functions.