[Bug fortran/65819] overzealous checking in gfc_check_dependency for identical=true

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65819

--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #5)
> Fixing the dependency for identical=true is a Good Thing(TM), but
> will not be enough to fix the test case:

Hm, another thought.

For this special case (calling the matmul library function) we could
be passing a non-contiguous lhs to the library, leading to far less
efficient code.

So, the choice of what to fix exactly is probably a bit more complicated.