[Bug c++/95726] ICE with aarch64 __Float32x4_t as template argument

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95726

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to rsandifo@gcc.gnu.org from comment #2)
> They mangle differently, and e.g.:
> 
> void f(float32x4_t);
> void f(V);
> 
> aren't ODR equivalent.  But a lot of code relies on the GNU vector
> extensions being available for float32x4_t as well as V, and on V
> and float32x4_t being mutually and implicitly interconvertible.

But if they mangle differently, then structural_comptypes shouldn't treat them
as same types.