[Bug target/88954] __attribute__((noplt)) doesn't work with function pointers

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88954

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
For indirect calls the attributes on the function type pointed to a relevant. 
Unioning attributes from the actually called function (if the compiler can
figure that out) can be appropriate depending on the actual attribute.