[Bug target/77728] [5/6/7/8 Regression] Miscompilation multiple vector iteration on ARM

[rearnsha at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728

--- Comment #40 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #39)
> It is an ABI change, so I think it is highly undesirable to backport.  It is
> enough that people will have to rebuild many packages built by GCC 7
> prereleases, if it is backported, they would have to rebuild also anything
> built by GCC 5 or 6.

On the other hand, the initial bug report showed that the old compilers weren't
even self-consistent.